/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread/triangular-longest-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-aa1e80b [2020-12-17 14:31:09,174 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-17 14:31:09,177 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-17 14:31:09,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-17 14:31:09,248 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-17 14:31:09,252 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-17 14:31:09,257 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-17 14:31:09,266 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-17 14:31:09,269 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-17 14:31:09,276 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-17 14:31:09,277 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-17 14:31:09,279 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-17 14:31:09,279 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-17 14:31:09,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-17 14:31:09,286 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-17 14:31:09,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-17 14:31:09,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-17 14:31:09,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-17 14:31:09,295 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-17 14:31:09,301 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-17 14:31:09,306 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-17 14:31:09,310 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-17 14:31:09,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-17 14:31:09,316 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-17 14:31:09,326 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-17 14:31:09,333 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-17 14:31:09,334 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-17 14:31:09,337 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-17 14:31:09,338 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-17 14:31:09,339 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-17 14:31:09,340 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-17 14:31:09,340 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-17 14:31:09,341 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-17 14:31:09,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-17 14:31:09,342 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-17 14:31:09,343 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-17 14:31:09,344 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2020-12-17 14:31:09,408 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-17 14:31:09,408 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-17 14:31:09,414 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-17 14:31:09,415 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-17 14:31:09,415 INFO L138 SettingsManager]: * Use SBE=true [2020-12-17 14:31:09,415 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-17 14:31:09,415 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-17 14:31:09,416 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-17 14:31:09,416 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-17 14:31:09,416 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-17 14:31:09,418 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-17 14:31:09,418 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-17 14:31:09,418 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-17 14:31:09,418 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-17 14:31:09,418 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-17 14:31:09,419 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-17 14:31:09,419 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-17 14:31:09,419 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-17 14:31:09,419 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-17 14:31:09,419 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-17 14:31:09,420 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-17 14:31:09,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-17 14:31:09,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-17 14:31:09,421 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-17 14:31:09,421 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-17 14:31:09,422 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-17 14:31:09,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-17 14:31:09,422 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-12-17 14:31:09,422 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-17 14:31:09,422 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2020-12-17 14:31:09,423 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-17 14:31:09,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-17 14:31:09,944 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-17 14:31:09,947 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-17 14:31:09,948 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-17 14:31:09,949 INFO L275 PluginConnector]: CDTParser initialized [2020-12-17 14:31:09,950 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longest-1.i [2020-12-17 14:31:10,066 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0af1ead8f/688866c2ebea4e368f389962d0f1ce77/FLAG75973d2ed [2020-12-17 14:31:10,914 INFO L306 CDTParser]: Found 1 translation units. [2020-12-17 14:31:10,915 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-1.i [2020-12-17 14:31:10,931 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0af1ead8f/688866c2ebea4e368f389962d0f1ce77/FLAG75973d2ed [2020-12-17 14:31:11,189 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0af1ead8f/688866c2ebea4e368f389962d0f1ce77 [2020-12-17 14:31:11,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-17 14:31:11,206 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-12-17 14:31:11,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-17 14:31:11,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-17 14:31:11,216 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-17 14:31:11,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 02:31:11" (1/1) ... [2020-12-17 14:31:11,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58705551 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:31:11, skipping insertion in model container [2020-12-17 14:31:11,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 02:31:11" (1/1) ... [2020-12-17 14:31:11,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-17 14:31:11,319 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-17 14:31:11,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-17 14:31:11,804 INFO L203 MainTranslator]: Completed pre-run [2020-12-17 14:31:11,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-17 14:31:12,088 INFO L208 MainTranslator]: Completed translation [2020-12-17 14:31:12,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:31:12 WrapperNode [2020-12-17 14:31:12,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-17 14:31:12,090 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-17 14:31:12,090 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-17 14:31:12,090 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-17 14:31:12,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:31:12" (1/1) ... [2020-12-17 14:31:12,119 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:31:12" (1/1) ... [2020-12-17 14:31:12,146 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-17 14:31:12,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-17 14:31:12,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-17 14:31:12,148 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-17 14:31:12,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:31:12" (1/1) ... [2020-12-17 14:31:12,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:31:12" (1/1) ... [2020-12-17 14:31:12,162 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:31:12" (1/1) ... [2020-12-17 14:31:12,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:31:12" (1/1) ... [2020-12-17 14:31:12,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:31:12" (1/1) ... [2020-12-17 14:31:12,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:31:12" (1/1) ... [2020-12-17 14:31:12,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:31:12" (1/1) ... [2020-12-17 14:31:12,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-17 14:31:12,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-17 14:31:12,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-17 14:31:12,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-17 14:31:12,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:31:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-17 14:31:12,295 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-12-17 14:31:12,297 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-12-17 14:31:12,297 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-12-17 14:31:12,298 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-12-17 14:31:12,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-17 14:31:12,301 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-17 14:31:12,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-17 14:31:12,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-17 14:31:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-17 14:31:12,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-17 14:31:12,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-17 14:31:12,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-17 14:31:12,307 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-17 14:31:12,757 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-17 14:31:12,758 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-17 14:31:12,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 02:31:12 BoogieIcfgContainer [2020-12-17 14:31:12,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-17 14:31:12,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-17 14:31:12,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-17 14:31:12,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-17 14:31:12,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 02:31:11" (1/3) ... [2020-12-17 14:31:12,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a94eb28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 02:31:12, skipping insertion in model container [2020-12-17 14:31:12,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:31:12" (2/3) ... [2020-12-17 14:31:12,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a94eb28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 02:31:12, skipping insertion in model container [2020-12-17 14:31:12,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 02:31:12" (3/3) ... [2020-12-17 14:31:12,772 INFO L111 eAbstractionObserver]: Analyzing ICFG triangular-longest-1.i [2020-12-17 14:31:12,793 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-17 14:31:12,794 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-17 14:31:12,798 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-17 14:31:12,799 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-17 14:31:12,840 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,840 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,841 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,841 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,841 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,841 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,842 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,842 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,842 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,842 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,843 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,843 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,843 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,844 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,844 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,844 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,845 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,845 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,845 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,845 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,846 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,846 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,846 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,846 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,847 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,847 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,847 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,847 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,848 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,848 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,848 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,848 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,849 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,849 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,849 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,849 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,849 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,850 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,850 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,850 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,850 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,851 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,851 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,851 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,851 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,851 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,852 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,852 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,852 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,852 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,853 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,853 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,853 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,853 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,854 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,854 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,856 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,857 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,857 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,857 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,857 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,857 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,866 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,866 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,866 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,867 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,867 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,867 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 14:31:12,870 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-17 14:31:12,885 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-17 14:31:12,912 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-17 14:31:12,913 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-17 14:31:12,913 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-17 14:31:12,913 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-17 14:31:12,913 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-17 14:31:12,913 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-17 14:31:12,913 INFO L383 AbstractCegarLoop]: Minimize is NONE [2020-12-17 14:31:12,914 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-17 14:31:12,927 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 65 places, 64 transitions, 138 flow [2020-12-17 14:31:13,068 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1848 states, 1846 states have (on average 3.2183098591549295) internal successors, (5941), 1847 states have internal predecessors, (5941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:13,079 INFO L276 IsEmpty]: Start isEmpty. Operand has 1848 states, 1846 states have (on average 3.2183098591549295) internal successors, (5941), 1847 states have internal predecessors, (5941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:13,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-17 14:31:13,098 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:31:13,099 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:31:13,100 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:31:13,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:31:13,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1900887756, now seen corresponding path program 1 times [2020-12-17 14:31:13,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:31:13,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962466911] [2020-12-17 14:31:13,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:31:13,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:13,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:31:13,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962466911] [2020-12-17 14:31:13,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 14:31:13,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-17 14:31:13,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737796184] [2020-12-17 14:31:13,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-17 14:31:13,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:31:13,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-17 14:31:13,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-17 14:31:13,762 INFO L87 Difference]: Start difference. First operand has 1848 states, 1846 states have (on average 3.2183098591549295) internal successors, (5941), 1847 states have internal predecessors, (5941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:14,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:31:14,084 INFO L93 Difference]: Finished difference Result 3336 states and 9728 transitions. [2020-12-17 14:31:14,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-17 14:31:14,087 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2020-12-17 14:31:14,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:31:14,120 INFO L225 Difference]: With dead ends: 3336 [2020-12-17 14:31:14,120 INFO L226 Difference]: Without dead ends: 1320 [2020-12-17 14:31:14,122 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-17 14:31:14,122 INFO L78 Accepts]: Start accepts. Automaton has 1320 states. Word has length 28 [2020-12-17 14:31:14,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:31:14,124 INFO L481 AbstractCegarLoop]: Abstraction has 1320 states. [2020-12-17 14:31:14,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:14,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states. [2020-12-17 14:31:14,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-17 14:31:14,134 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:31:14,134 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:31:14,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-17 14:31:14,135 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:31:14,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:31:14,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1199752031, now seen corresponding path program 1 times [2020-12-17 14:31:14,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:31:14,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593823294] [2020-12-17 14:31:14,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:31:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:14,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:31:14,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593823294] [2020-12-17 14:31:14,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 14:31:14,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-17 14:31:14,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127317196] [2020-12-17 14:31:14,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-17 14:31:14,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:31:14,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-17 14:31:14,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-17 14:31:14,441 INFO L87 Difference]: Start difference. First operand 1320 states. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:14,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:31:14,609 INFO L93 Difference]: Finished difference Result 2619 states and 7228 transitions. [2020-12-17 14:31:14,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-17 14:31:14,610 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2020-12-17 14:31:14,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:31:14,631 INFO L225 Difference]: With dead ends: 2619 [2020-12-17 14:31:14,631 INFO L226 Difference]: Without dead ends: 2363 [2020-12-17 14:31:14,632 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-17 14:31:14,632 INFO L78 Accepts]: Start accepts. Automaton has 2363 states. Word has length 32 [2020-12-17 14:31:14,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:31:14,633 INFO L481 AbstractCegarLoop]: Abstraction has 2363 states. [2020-12-17 14:31:14,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:14,633 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states. [2020-12-17 14:31:14,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-17 14:31:14,637 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:31:14,637 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:31:14,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-17 14:31:14,637 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:31:14,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:31:14,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1202725261, now seen corresponding path program 2 times [2020-12-17 14:31:14,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:31:14,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158787295] [2020-12-17 14:31:14,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:31:14,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:14,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:31:14,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158787295] [2020-12-17 14:31:14,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 14:31:14,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-17 14:31:14,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953481947] [2020-12-17 14:31:14,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-17 14:31:14,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:31:14,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-17 14:31:14,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-17 14:31:14,903 INFO L87 Difference]: Start difference. First operand 2363 states. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:15,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:31:15,117 INFO L93 Difference]: Finished difference Result 1883 states and 4981 transitions. [2020-12-17 14:31:15,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-17 14:31:15,118 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2020-12-17 14:31:15,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:31:15,133 INFO L225 Difference]: With dead ends: 1883 [2020-12-17 14:31:15,133 INFO L226 Difference]: Without dead ends: 1438 [2020-12-17 14:31:15,135 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-12-17 14:31:15,135 INFO L78 Accepts]: Start accepts. Automaton has 1438 states. Word has length 32 [2020-12-17 14:31:15,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:31:15,136 INFO L481 AbstractCegarLoop]: Abstraction has 1438 states. [2020-12-17 14:31:15,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:15,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states. [2020-12-17 14:31:15,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-17 14:31:15,142 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:31:15,143 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:31:15,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-17 14:31:15,143 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:31:15,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:31:15,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1299742308, now seen corresponding path program 1 times [2020-12-17 14:31:15,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:31:15,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736617669] [2020-12-17 14:31:15,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:31:15,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:15,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:31:15,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736617669] [2020-12-17 14:31:15,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 14:31:15,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-17 14:31:15,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648153947] [2020-12-17 14:31:15,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-17 14:31:15,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:31:15,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-17 14:31:15,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-17 14:31:15,384 INFO L87 Difference]: Start difference. First operand 1438 states. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:15,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:31:15,558 INFO L93 Difference]: Finished difference Result 2398 states and 6462 transitions. [2020-12-17 14:31:15,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-17 14:31:15,558 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2020-12-17 14:31:15,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:31:15,574 INFO L225 Difference]: With dead ends: 2398 [2020-12-17 14:31:15,574 INFO L226 Difference]: Without dead ends: 2119 [2020-12-17 14:31:15,575 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-12-17 14:31:15,575 INFO L78 Accepts]: Start accepts. Automaton has 2119 states. Word has length 36 [2020-12-17 14:31:15,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:31:15,575 INFO L481 AbstractCegarLoop]: Abstraction has 2119 states. [2020-12-17 14:31:15,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:15,576 INFO L276 IsEmpty]: Start isEmpty. Operand 2119 states. [2020-12-17 14:31:15,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-17 14:31:15,578 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:31:15,579 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:31:15,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-17 14:31:15,579 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:31:15,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:31:15,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1296769078, now seen corresponding path program 2 times [2020-12-17 14:31:15,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:31:15,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584305570] [2020-12-17 14:31:15,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:31:15,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:15,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:31:15,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584305570] [2020-12-17 14:31:15,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 14:31:15,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-17 14:31:15,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269972691] [2020-12-17 14:31:15,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-17 14:31:15,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:31:15,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-17 14:31:15,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-17 14:31:15,754 INFO L87 Difference]: Start difference. First operand 2119 states. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:15,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:31:15,994 INFO L93 Difference]: Finished difference Result 1543 states and 3905 transitions. [2020-12-17 14:31:15,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-17 14:31:15,995 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2020-12-17 14:31:15,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:31:16,004 INFO L225 Difference]: With dead ends: 1543 [2020-12-17 14:31:16,004 INFO L226 Difference]: Without dead ends: 1079 [2020-12-17 14:31:16,005 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-12-17 14:31:16,005 INFO L78 Accepts]: Start accepts. Automaton has 1079 states. Word has length 36 [2020-12-17 14:31:16,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:31:16,006 INFO L481 AbstractCegarLoop]: Abstraction has 1079 states. [2020-12-17 14:31:16,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:16,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states. [2020-12-17 14:31:16,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-17 14:31:16,009 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:31:16,009 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:31:16,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-17 14:31:16,009 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:31:16,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:31:16,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1841087432, now seen corresponding path program 3 times [2020-12-17 14:31:16,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:31:16,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829192866] [2020-12-17 14:31:16,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:31:16,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:16,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:31:16,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829192866] [2020-12-17 14:31:16,151 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 14:31:16,151 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-17 14:31:16,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464637461] [2020-12-17 14:31:16,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-17 14:31:16,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:31:16,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-17 14:31:16,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-17 14:31:16,153 INFO L87 Difference]: Start difference. First operand 1079 states. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:16,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:31:16,410 INFO L93 Difference]: Finished difference Result 1399 states and 3609 transitions. [2020-12-17 14:31:16,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-17 14:31:16,411 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2020-12-17 14:31:16,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:31:16,420 INFO L225 Difference]: With dead ends: 1399 [2020-12-17 14:31:16,420 INFO L226 Difference]: Without dead ends: 1175 [2020-12-17 14:31:16,421 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-12-17 14:31:16,421 INFO L78 Accepts]: Start accepts. Automaton has 1175 states. Word has length 36 [2020-12-17 14:31:16,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:31:16,421 INFO L481 AbstractCegarLoop]: Abstraction has 1175 states. [2020-12-17 14:31:16,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:16,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states. [2020-12-17 14:31:16,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-17 14:31:16,425 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:31:16,425 INFO L504 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:31:16,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-17 14:31:16,425 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:31:16,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:31:16,426 INFO L82 PathProgramCache]: Analyzing trace with hash -940103400, now seen corresponding path program 1 times [2020-12-17 14:31:16,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:31:16,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254577375] [2020-12-17 14:31:16,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:31:16,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:16,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:31:16,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254577375] [2020-12-17 14:31:16,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742128501] [2020-12-17 14:31:16,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:16,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:16,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-17 14:31:16,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:31:16,863 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:31:16,908 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:31:16,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:31:16,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:31:16,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2020-12-17 14:31:16,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430071467] [2020-12-17 14:31:16,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-17 14:31:16,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:31:16,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-17 14:31:16,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-12-17 14:31:16,930 INFO L87 Difference]: Start difference. First operand 1175 states. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:17,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:31:17,229 INFO L93 Difference]: Finished difference Result 1879 states and 4893 transitions. [2020-12-17 14:31:17,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-17 14:31:17,230 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2020-12-17 14:31:17,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:31:17,241 INFO L225 Difference]: With dead ends: 1879 [2020-12-17 14:31:17,241 INFO L226 Difference]: Without dead ends: 1455 [2020-12-17 14:31:17,242 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2020-12-17 14:31:17,242 INFO L78 Accepts]: Start accepts. Automaton has 1455 states. Word has length 41 [2020-12-17 14:31:17,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:31:17,243 INFO L481 AbstractCegarLoop]: Abstraction has 1455 states. [2020-12-17 14:31:17,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:17,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states. [2020-12-17 14:31:17,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-17 14:31:17,250 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:31:17,251 INFO L504 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:31:17,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-17 14:31:17,465 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:31:17,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:31:17,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1546743908, now seen corresponding path program 1 times [2020-12-17 14:31:17,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:31:17,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679548086] [2020-12-17 14:31:17,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:31:17,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:17,626 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:17,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679548086] [2020-12-17 14:31:17,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044261059] [2020-12-17 14:31:17,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:17,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:17,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-17 14:31:17,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:31:17,755 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:31:17,771 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:17,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:31:17,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-12-17 14:31:17,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86392450] [2020-12-17 14:31:17,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-17 14:31:17,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:31:17,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-17 14:31:17,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-17 14:31:17,778 INFO L87 Difference]: Start difference. First operand 1455 states. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:17,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:31:17,957 INFO L93 Difference]: Finished difference Result 1855 states and 4685 transitions. [2020-12-17 14:31:17,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-17 14:31:17,958 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2020-12-17 14:31:17,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:31:17,972 INFO L225 Difference]: With dead ends: 1855 [2020-12-17 14:31:17,973 INFO L226 Difference]: Without dead ends: 1570 [2020-12-17 14:31:17,980 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-12-17 14:31:17,983 INFO L78 Accepts]: Start accepts. Automaton has 1570 states. Word has length 46 [2020-12-17 14:31:17,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:31:17,984 INFO L481 AbstractCegarLoop]: Abstraction has 1570 states. [2020-12-17 14:31:17,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:17,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states. [2020-12-17 14:31:17,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-17 14:31:17,992 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:31:17,992 INFO L504 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:31:18,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:18,208 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:31:18,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:31:18,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1378232494, now seen corresponding path program 2 times [2020-12-17 14:31:18,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:31:18,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370898045] [2020-12-17 14:31:18,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:31:18,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:18,403 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:18,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370898045] [2020-12-17 14:31:18,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999505868] [2020-12-17 14:31:18,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:18,489 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 14:31:18,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:31:18,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-17 14:31:18,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:31:18,528 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:31:18,550 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:31:18,558 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:18,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:31:18,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-12-17 14:31:18,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940517609] [2020-12-17 14:31:18,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-17 14:31:18,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:31:18,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-17 14:31:18,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-17 14:31:18,561 INFO L87 Difference]: Start difference. First operand 1570 states. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:18,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:31:18,799 INFO L93 Difference]: Finished difference Result 2010 states and 4995 transitions. [2020-12-17 14:31:18,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-17 14:31:18,800 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2020-12-17 14:31:18,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:31:18,842 INFO L225 Difference]: With dead ends: 2010 [2020-12-17 14:31:18,842 INFO L226 Difference]: Without dead ends: 1710 [2020-12-17 14:31:18,843 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-12-17 14:31:18,843 INFO L78 Accepts]: Start accepts. Automaton has 1710 states. Word has length 46 [2020-12-17 14:31:18,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:31:18,843 INFO L481 AbstractCegarLoop]: Abstraction has 1710 states. [2020-12-17 14:31:18,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 9 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:18,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1710 states. [2020-12-17 14:31:18,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-17 14:31:18,848 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:31:18,848 INFO L504 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:31:19,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:19,059 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:31:19,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:31:19,060 INFO L82 PathProgramCache]: Analyzing trace with hash -443954361, now seen corresponding path program 1 times [2020-12-17 14:31:19,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:31:19,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945285071] [2020-12-17 14:31:19,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:31:19,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:19,234 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:31:19,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945285071] [2020-12-17 14:31:19,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092857909] [2020-12-17 14:31:19,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:19,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:19,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-17 14:31:19,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:31:19,362 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:31:19,394 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:31:19,403 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:31:19,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:31:19,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-12-17 14:31:19,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046158824] [2020-12-17 14:31:19,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-17 14:31:19,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:31:19,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-17 14:31:19,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-12-17 14:31:19,407 INFO L87 Difference]: Start difference. First operand 1710 states. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:19,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:31:19,896 INFO L93 Difference]: Finished difference Result 3040 states and 7712 transitions. [2020-12-17 14:31:19,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-17 14:31:19,896 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2020-12-17 14:31:19,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:31:19,915 INFO L225 Difference]: With dead ends: 3040 [2020-12-17 14:31:19,916 INFO L226 Difference]: Without dead ends: 2345 [2020-12-17 14:31:19,916 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=167, Invalid=433, Unknown=0, NotChecked=0, Total=600 [2020-12-17 14:31:19,916 INFO L78 Accepts]: Start accepts. Automaton has 2345 states. Word has length 46 [2020-12-17 14:31:19,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:31:19,918 INFO L481 AbstractCegarLoop]: Abstraction has 2345 states. [2020-12-17 14:31:19,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:19,919 INFO L276 IsEmpty]: Start isEmpty. Operand 2345 states. [2020-12-17 14:31:19,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-17 14:31:19,926 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:31:19,926 INFO L504 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:31:20,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:20,142 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:31:20,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:31:20,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1795867972, now seen corresponding path program 2 times [2020-12-17 14:31:20,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:31:20,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901545068] [2020-12-17 14:31:20,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:31:20,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:20,291 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:20,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901545068] [2020-12-17 14:31:20,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744886546] [2020-12-17 14:31:20,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:20,370 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 14:31:20,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:31:20,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-17 14:31:20,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:31:20,404 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:31:20,414 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:20,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:31:20,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2020-12-17 14:31:20,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678344610] [2020-12-17 14:31:20,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-17 14:31:20,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:31:20,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-17 14:31:20,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-17 14:31:20,417 INFO L87 Difference]: Start difference. First operand 2345 states. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:20,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:31:20,648 INFO L93 Difference]: Finished difference Result 2745 states and 6760 transitions. [2020-12-17 14:31:20,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-17 14:31:20,649 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2020-12-17 14:31:20,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:31:20,660 INFO L225 Difference]: With dead ends: 2745 [2020-12-17 14:31:20,660 INFO L226 Difference]: Without dead ends: 2445 [2020-12-17 14:31:20,660 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-12-17 14:31:20,661 INFO L78 Accepts]: Start accepts. Automaton has 2445 states. Word has length 51 [2020-12-17 14:31:20,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:31:20,661 INFO L481 AbstractCegarLoop]: Abstraction has 2445 states. [2020-12-17 14:31:20,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:20,662 INFO L276 IsEmpty]: Start isEmpty. Operand 2445 states. [2020-12-17 14:31:20,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-17 14:31:20,667 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:31:20,668 INFO L504 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:31:20,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-17 14:31:20,880 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:31:20,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:31:20,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1129108430, now seen corresponding path program 3 times [2020-12-17 14:31:20,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:31:20,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100874932] [2020-12-17 14:31:20,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:31:20,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:21,030 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:21,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100874932] [2020-12-17 14:31:21,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963800730] [2020-12-17 14:31:21,034 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:21,128 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-17 14:31:21,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:31:21,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-17 14:31:21,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:31:21,241 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:31:21,271 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:31:21,283 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:21,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:31:21,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-12-17 14:31:21,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27177398] [2020-12-17 14:31:21,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-17 14:31:21,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:31:21,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-17 14:31:21,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-17 14:31:21,286 INFO L87 Difference]: Start difference. First operand 2445 states. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:21,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:31:21,614 INFO L93 Difference]: Finished difference Result 2885 states and 7040 transitions. [2020-12-17 14:31:21,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-17 14:31:21,614 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2020-12-17 14:31:21,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:31:21,628 INFO L225 Difference]: With dead ends: 2885 [2020-12-17 14:31:21,628 INFO L226 Difference]: Without dead ends: 2570 [2020-12-17 14:31:21,629 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2020-12-17 14:31:21,629 INFO L78 Accepts]: Start accepts. Automaton has 2570 states. Word has length 51 [2020-12-17 14:31:21,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:31:21,629 INFO L481 AbstractCegarLoop]: Abstraction has 2570 states. [2020-12-17 14:31:21,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:21,630 INFO L276 IsEmpty]: Start isEmpty. Operand 2570 states. [2020-12-17 14:31:21,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-17 14:31:21,636 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:31:21,636 INFO L504 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:31:21,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:21,851 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:31:21,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:31:21,852 INFO L82 PathProgramCache]: Analyzing trace with hash -194830297, now seen corresponding path program 4 times [2020-12-17 14:31:21,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:31:21,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151519656] [2020-12-17 14:31:21,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:31:21,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:22,004 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:31:22,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151519656] [2020-12-17 14:31:22,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498484134] [2020-12-17 14:31:22,005 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:22,086 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 14:31:22,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:31:22,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-17 14:31:22,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:31:22,124 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:31:22,167 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:31:22,185 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:31:22,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:31:22,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2020-12-17 14:31:22,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167567889] [2020-12-17 14:31:22,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-17 14:31:22,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:31:22,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-17 14:31:22,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-12-17 14:31:22,191 INFO L87 Difference]: Start difference. First operand 2570 states. Second operand has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:22,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:31:22,697 INFO L93 Difference]: Finished difference Result 3530 states and 8842 transitions. [2020-12-17 14:31:22,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-17 14:31:22,698 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2020-12-17 14:31:22,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:31:22,708 INFO L225 Difference]: With dead ends: 3530 [2020-12-17 14:31:22,708 INFO L226 Difference]: Without dead ends: 2835 [2020-12-17 14:31:22,709 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2020-12-17 14:31:22,709 INFO L78 Accepts]: Start accepts. Automaton has 2835 states. Word has length 51 [2020-12-17 14:31:22,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:31:22,710 INFO L481 AbstractCegarLoop]: Abstraction has 2835 states. [2020-12-17 14:31:22,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:22,710 INFO L276 IsEmpty]: Start isEmpty. Operand 2835 states. [2020-12-17 14:31:22,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-17 14:31:22,718 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:31:22,718 INFO L504 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:31:22,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:22,931 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:31:22,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:31:22,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1043229613, now seen corresponding path program 5 times [2020-12-17 14:31:22,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:31:22,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438167815] [2020-12-17 14:31:22,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:31:22,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:23,133 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:23,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438167815] [2020-12-17 14:31:23,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103258507] [2020-12-17 14:31:23,135 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:23,206 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-12-17 14:31:23,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:31:23,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-17 14:31:23,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:31:23,288 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:31:23,338 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:23,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:31:23,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-12-17 14:31:23,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026352545] [2020-12-17 14:31:23,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-17 14:31:23,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:31:23,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-17 14:31:23,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-12-17 14:31:23,342 INFO L87 Difference]: Start difference. First operand 2835 states. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:23,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:31:23,561 INFO L93 Difference]: Finished difference Result 3235 states and 7890 transitions. [2020-12-17 14:31:23,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-17 14:31:23,562 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2020-12-17 14:31:23,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:31:23,571 INFO L225 Difference]: With dead ends: 3235 [2020-12-17 14:31:23,571 INFO L226 Difference]: Without dead ends: 2935 [2020-12-17 14:31:23,572 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2020-12-17 14:31:23,572 INFO L78 Accepts]: Start accepts. Automaton has 2935 states. Word has length 56 [2020-12-17 14:31:23,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:31:23,574 INFO L481 AbstractCegarLoop]: Abstraction has 2935 states. [2020-12-17 14:31:23,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:23,574 INFO L276 IsEmpty]: Start isEmpty. Operand 2935 states. [2020-12-17 14:31:23,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-17 14:31:23,581 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:31:23,581 INFO L504 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:31:23,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-17 14:31:23,796 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:31:23,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:31:23,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1387222591, now seen corresponding path program 6 times [2020-12-17 14:31:23,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:31:23,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497752777] [2020-12-17 14:31:23,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:31:23,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:23,989 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:23,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497752777] [2020-12-17 14:31:23,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098907188] [2020-12-17 14:31:23,990 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:24,095 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-12-17 14:31:24,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:31:24,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-17 14:31:24,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:31:24,133 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:31:24,194 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:31:24,208 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:24,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:31:24,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2020-12-17 14:31:24,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453558371] [2020-12-17 14:31:24,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-17 14:31:24,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:31:24,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-17 14:31:24,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-12-17 14:31:24,213 INFO L87 Difference]: Start difference. First operand 2935 states. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:24,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:31:24,575 INFO L93 Difference]: Finished difference Result 3335 states and 8090 transitions. [2020-12-17 14:31:24,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-17 14:31:24,575 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2020-12-17 14:31:24,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:31:24,585 INFO L225 Difference]: With dead ends: 3335 [2020-12-17 14:31:24,586 INFO L226 Difference]: Without dead ends: 3035 [2020-12-17 14:31:24,591 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2020-12-17 14:31:24,591 INFO L78 Accepts]: Start accepts. Automaton has 3035 states. Word has length 56 [2020-12-17 14:31:24,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:31:24,592 INFO L481 AbstractCegarLoop]: Abstraction has 3035 states. [2020-12-17 14:31:24,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:24,592 INFO L276 IsEmpty]: Start isEmpty. Operand 3035 states. [2020-12-17 14:31:24,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-17 14:31:24,599 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:31:24,600 INFO L504 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:31:24,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-17 14:31:24,813 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:31:24,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:31:24,814 INFO L82 PathProgramCache]: Analyzing trace with hash -23367961, now seen corresponding path program 7 times [2020-12-17 14:31:24,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:31:24,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347349682] [2020-12-17 14:31:24,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:31:24,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:24,980 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:24,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347349682] [2020-12-17 14:31:24,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255124190] [2020-12-17 14:31:24,981 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:25,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-17 14:31:25,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:31:25,117 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:31:25,128 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:25,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:31:25,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-12-17 14:31:25,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949304895] [2020-12-17 14:31:25,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-17 14:31:25,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:31:25,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-17 14:31:25,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-12-17 14:31:25,131 INFO L87 Difference]: Start difference. First operand 3035 states. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:25,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:31:25,490 INFO L93 Difference]: Finished difference Result 3565 states and 8550 transitions. [2020-12-17 14:31:25,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-17 14:31:25,491 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2020-12-17 14:31:25,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:31:25,502 INFO L225 Difference]: With dead ends: 3565 [2020-12-17 14:31:25,502 INFO L226 Difference]: Without dead ends: 3265 [2020-12-17 14:31:25,503 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2020-12-17 14:31:25,503 INFO L78 Accepts]: Start accepts. Automaton has 3265 states. Word has length 56 [2020-12-17 14:31:25,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:31:25,503 INFO L481 AbstractCegarLoop]: Abstraction has 3265 states. [2020-12-17 14:31:25,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:25,504 INFO L276 IsEmpty]: Start isEmpty. Operand 3265 states. [2020-12-17 14:31:25,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-17 14:31:25,519 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:31:25,520 INFO L504 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:31:25,732 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-17 14:31:25,733 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:31:25,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:31:25,735 INFO L82 PathProgramCache]: Analyzing trace with hash 701442583, now seen corresponding path program 8 times [2020-12-17 14:31:25,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:31:25,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484401379] [2020-12-17 14:31:25,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:31:25,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:25,905 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:25,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484401379] [2020-12-17 14:31:25,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553589801] [2020-12-17 14:31:25,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:25,993 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 14:31:25,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:31:25,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-17 14:31:25,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:31:26,038 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:31:26,081 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:31:26,095 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:26,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:31:26,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2020-12-17 14:31:26,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775174070] [2020-12-17 14:31:26,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-17 14:31:26,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:31:26,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-17 14:31:26,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-12-17 14:31:26,099 INFO L87 Difference]: Start difference. First operand 3265 states. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:26,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:31:26,580 INFO L93 Difference]: Finished difference Result 3825 states and 9070 transitions. [2020-12-17 14:31:26,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-17 14:31:26,581 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2020-12-17 14:31:26,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:31:26,593 INFO L225 Difference]: With dead ends: 3825 [2020-12-17 14:31:26,593 INFO L226 Difference]: Without dead ends: 3525 [2020-12-17 14:31:26,594 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2020-12-17 14:31:26,595 INFO L78 Accepts]: Start accepts. Automaton has 3525 states. Word has length 56 [2020-12-17 14:31:26,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:31:26,595 INFO L481 AbstractCegarLoop]: Abstraction has 3525 states. [2020-12-17 14:31:26,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:26,596 INFO L276 IsEmpty]: Start isEmpty. Operand 3525 states. [2020-12-17 14:31:26,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-17 14:31:26,603 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:31:26,604 INFO L504 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:31:26,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-17 14:31:26,818 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:31:26,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:31:26,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1901571208, now seen corresponding path program 9 times [2020-12-17 14:31:26,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:31:26,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564277806] [2020-12-17 14:31:26,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:31:26,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:27,001 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:31:27,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564277806] [2020-12-17 14:31:27,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942987997] [2020-12-17 14:31:27,002 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:27,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-17 14:31:27,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:31:27,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-17 14:31:27,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:31:27,131 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:31:27,164 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:31:27,184 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:31:27,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:31:27,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2020-12-17 14:31:27,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776350374] [2020-12-17 14:31:27,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-17 14:31:27,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:31:27,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-17 14:31:27,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-12-17 14:31:27,189 INFO L87 Difference]: Start difference. First operand 3525 states. Second operand has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:27,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:31:27,817 INFO L93 Difference]: Finished difference Result 4485 states and 10902 transitions. [2020-12-17 14:31:27,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-17 14:31:27,818 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2020-12-17 14:31:27,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:31:27,829 INFO L225 Difference]: With dead ends: 4485 [2020-12-17 14:31:27,830 INFO L226 Difference]: Without dead ends: 3790 [2020-12-17 14:31:27,830 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=254, Invalid=676, Unknown=0, NotChecked=0, Total=930 [2020-12-17 14:31:27,830 INFO L78 Accepts]: Start accepts. Automaton has 3790 states. Word has length 56 [2020-12-17 14:31:27,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:31:27,831 INFO L481 AbstractCegarLoop]: Abstraction has 3790 states. [2020-12-17 14:31:27,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:27,831 INFO L276 IsEmpty]: Start isEmpty. Operand 3790 states. [2020-12-17 14:31:27,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-17 14:31:27,840 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:31:27,840 INFO L504 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:31:28,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-17 14:31:28,056 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:31:28,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:31:28,056 INFO L82 PathProgramCache]: Analyzing trace with hash 674124083, now seen corresponding path program 10 times [2020-12-17 14:31:28,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:31:28,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961499537] [2020-12-17 14:31:28,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:31:28,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:28,302 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:28,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961499537] [2020-12-17 14:31:28,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791303533] [2020-12-17 14:31:28,306 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:28,407 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 14:31:28,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:31:28,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-17 14:31:28,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:31:28,449 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:31:28,463 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:28,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:31:28,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2020-12-17 14:31:28,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634354908] [2020-12-17 14:31:28,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-17 14:31:28,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:31:28,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-17 14:31:28,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-12-17 14:31:28,468 INFO L87 Difference]: Start difference. First operand 3790 states. Second operand has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:28,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:31:28,769 INFO L93 Difference]: Finished difference Result 4190 states and 9950 transitions. [2020-12-17 14:31:28,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-17 14:31:28,770 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2020-12-17 14:31:28,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:31:28,778 INFO L225 Difference]: With dead ends: 4190 [2020-12-17 14:31:28,779 INFO L226 Difference]: Without dead ends: 3890 [2020-12-17 14:31:28,779 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2020-12-17 14:31:28,780 INFO L78 Accepts]: Start accepts. Automaton has 3890 states. Word has length 61 [2020-12-17 14:31:28,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:31:28,780 INFO L481 AbstractCegarLoop]: Abstraction has 3890 states. [2020-12-17 14:31:28,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:28,780 INFO L276 IsEmpty]: Start isEmpty. Operand 3890 states. [2020-12-17 14:31:28,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-17 14:31:28,789 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:31:28,789 INFO L504 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:31:29,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:29,003 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:31:29,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:31:29,004 INFO L82 PathProgramCache]: Analyzing trace with hash 330131105, now seen corresponding path program 11 times [2020-12-17 14:31:29,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:31:29,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309339928] [2020-12-17 14:31:29,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:31:29,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:29,174 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:29,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309339928] [2020-12-17 14:31:29,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936726056] [2020-12-17 14:31:29,175 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:29,261 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-12-17 14:31:29,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:31:29,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-17 14:31:29,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:31:29,285 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:31:29,303 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:31:29,314 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:29,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:31:29,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-12-17 14:31:29,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127505937] [2020-12-17 14:31:29,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-17 14:31:29,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:31:29,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-17 14:31:29,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-12-17 14:31:29,317 INFO L87 Difference]: Start difference. First operand 3890 states. Second operand has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:29,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:31:29,714 INFO L93 Difference]: Finished difference Result 4290 states and 10150 transitions. [2020-12-17 14:31:29,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-17 14:31:29,715 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2020-12-17 14:31:29,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:31:29,721 INFO L225 Difference]: With dead ends: 4290 [2020-12-17 14:31:29,721 INFO L226 Difference]: Without dead ends: 3990 [2020-12-17 14:31:29,723 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2020-12-17 14:31:29,723 INFO L78 Accepts]: Start accepts. Automaton has 3990 states. Word has length 61 [2020-12-17 14:31:29,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:31:29,723 INFO L481 AbstractCegarLoop]: Abstraction has 3990 states. [2020-12-17 14:31:29,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:29,724 INFO L276 IsEmpty]: Start isEmpty. Operand 3990 states. [2020-12-17 14:31:29,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-17 14:31:29,731 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:31:29,732 INFO L504 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:31:29,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:29,945 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:31:29,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:31:29,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1693985735, now seen corresponding path program 12 times [2020-12-17 14:31:29,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:31:29,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327176349] [2020-12-17 14:31:29,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:31:29,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:30,085 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:30,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327176349] [2020-12-17 14:31:30,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321505604] [2020-12-17 14:31:30,085 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:30,163 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-12-17 14:31:30,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:31:30,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-17 14:31:30,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:31:30,186 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:31:30,194 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:30,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:31:30,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2020-12-17 14:31:30,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696388441] [2020-12-17 14:31:30,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-17 14:31:30,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:31:30,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-17 14:31:30,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-12-17 14:31:30,196 INFO L87 Difference]: Start difference. First operand 3990 states. Second operand has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:30,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:31:30,595 INFO L93 Difference]: Finished difference Result 4520 states and 10610 transitions. [2020-12-17 14:31:30,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-17 14:31:30,596 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2020-12-17 14:31:30,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:31:30,606 INFO L225 Difference]: With dead ends: 4520 [2020-12-17 14:31:30,606 INFO L226 Difference]: Without dead ends: 4220 [2020-12-17 14:31:30,607 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2020-12-17 14:31:30,607 INFO L78 Accepts]: Start accepts. Automaton has 4220 states. Word has length 61 [2020-12-17 14:31:30,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:31:30,608 INFO L481 AbstractCegarLoop]: Abstraction has 4220 states. [2020-12-17 14:31:30,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:30,608 INFO L276 IsEmpty]: Start isEmpty. Operand 4220 states. [2020-12-17 14:31:30,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-17 14:31:30,617 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:31:30,618 INFO L504 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:31:30,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-17 14:31:30,821 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:31:30,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:31:30,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1876171017, now seen corresponding path program 13 times [2020-12-17 14:31:30,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:31:30,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162860675] [2020-12-17 14:31:30,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:31:30,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:31,004 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:31,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162860675] [2020-12-17 14:31:31,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749696345] [2020-12-17 14:31:31,005 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:31,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-17 14:31:31,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:31:31,180 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:31:31,201 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:31:31,213 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:31,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:31:31,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-12-17 14:31:31,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343110951] [2020-12-17 14:31:31,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-17 14:31:31,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:31:31,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-17 14:31:31,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-12-17 14:31:31,216 INFO L87 Difference]: Start difference. First operand 4220 states. Second operand has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:31,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:31:31,737 INFO L93 Difference]: Finished difference Result 4660 states and 10890 transitions. [2020-12-17 14:31:31,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-17 14:31:31,738 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2020-12-17 14:31:31,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:31:31,744 INFO L225 Difference]: With dead ends: 4660 [2020-12-17 14:31:31,744 INFO L226 Difference]: Without dead ends: 4360 [2020-12-17 14:31:31,745 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650 [2020-12-17 14:31:31,745 INFO L78 Accepts]: Start accepts. Automaton has 4360 states. Word has length 61 [2020-12-17 14:31:31,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:31:31,745 INFO L481 AbstractCegarLoop]: Abstraction has 4360 states. [2020-12-17 14:31:31,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:31,746 INFO L276 IsEmpty]: Start isEmpty. Operand 4360 states. [2020-12-17 14:31:31,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-17 14:31:31,753 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:31:31,753 INFO L504 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:31:31,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:31,955 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:31:31,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:31:31,956 INFO L82 PathProgramCache]: Analyzing trace with hash -184217512, now seen corresponding path program 14 times [2020-12-17 14:31:31,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:31:31,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970493210] [2020-12-17 14:31:31,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:31:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:32,115 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:31:32,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970493210] [2020-12-17 14:31:32,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867406695] [2020-12-17 14:31:32,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:32,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 14:31:32,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:31:32,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-17 14:31:32,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:31:32,231 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:31:32,262 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:31:32,271 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:31:32,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:31:32,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2020-12-17 14:31:32,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927795617] [2020-12-17 14:31:32,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-17 14:31:32,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:31:32,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-17 14:31:32,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-12-17 14:31:32,273 INFO L87 Difference]: Start difference. First operand 4360 states. Second operand has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:32,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:31:32,952 INFO L93 Difference]: Finished difference Result 5320 states and 12722 transitions. [2020-12-17 14:31:32,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-17 14:31:32,953 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2020-12-17 14:31:32,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:31:32,958 INFO L225 Difference]: With dead ends: 5320 [2020-12-17 14:31:32,959 INFO L226 Difference]: Without dead ends: 4625 [2020-12-17 14:31:32,959 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=266, Invalid=726, Unknown=0, NotChecked=0, Total=992 [2020-12-17 14:31:32,959 INFO L78 Accepts]: Start accepts. Automaton has 4625 states. Word has length 61 [2020-12-17 14:31:32,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:31:32,960 INFO L481 AbstractCegarLoop]: Abstraction has 4625 states. [2020-12-17 14:31:32,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:32,960 INFO L276 IsEmpty]: Start isEmpty. Operand 4625 states. [2020-12-17 14:31:32,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-17 14:31:32,967 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:31:32,967 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:31:33,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-17 14:31:33,168 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:31:33,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:31:33,169 INFO L82 PathProgramCache]: Analyzing trace with hash -446375550, now seen corresponding path program 15 times [2020-12-17 14:31:33,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:31:33,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069513919] [2020-12-17 14:31:33,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:31:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:33,352 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:33,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069513919] [2020-12-17 14:31:33,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195283351] [2020-12-17 14:31:33,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:33,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-17 14:31:33,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:31:33,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-17 14:31:33,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:31:33,492 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:31:33,504 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:33,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:31:33,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-12-17 14:31:33,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646297017] [2020-12-17 14:31:33,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-17 14:31:33,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:31:33,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-17 14:31:33,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-12-17 14:31:33,507 INFO L87 Difference]: Start difference. First operand 4625 states. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:33,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:31:33,808 INFO L93 Difference]: Finished difference Result 5025 states and 11770 transitions. [2020-12-17 14:31:33,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-17 14:31:33,809 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2020-12-17 14:31:33,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:31:33,817 INFO L225 Difference]: With dead ends: 5025 [2020-12-17 14:31:33,817 INFO L226 Difference]: Without dead ends: 4725 [2020-12-17 14:31:33,818 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2020-12-17 14:31:33,818 INFO L78 Accepts]: Start accepts. Automaton has 4725 states. Word has length 66 [2020-12-17 14:31:33,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:31:33,819 INFO L481 AbstractCegarLoop]: Abstraction has 4725 states. [2020-12-17 14:31:33,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:33,819 INFO L276 IsEmpty]: Start isEmpty. Operand 4725 states. [2020-12-17 14:31:33,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-17 14:31:33,826 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:31:33,826 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:31:34,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-12-17 14:31:34,028 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:31:34,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:31:34,029 INFO L82 PathProgramCache]: Analyzing trace with hash 2064809328, now seen corresponding path program 16 times [2020-12-17 14:31:34,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:31:34,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968352789] [2020-12-17 14:31:34,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:31:34,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:34,239 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:34,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968352789] [2020-12-17 14:31:34,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626123073] [2020-12-17 14:31:34,239 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:34,322 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 14:31:34,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:31:34,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-17 14:31:34,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:31:34,349 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:31:34,401 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:31:34,414 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:34,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:31:34,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2020-12-17 14:31:34,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659777077] [2020-12-17 14:31:34,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-17 14:31:34,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:31:34,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-17 14:31:34,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-12-17 14:31:34,417 INFO L87 Difference]: Start difference. First operand 4725 states. Second operand has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:34,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:31:34,886 INFO L93 Difference]: Finished difference Result 5125 states and 11970 transitions. [2020-12-17 14:31:34,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-17 14:31:34,887 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2020-12-17 14:31:34,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:31:34,896 INFO L225 Difference]: With dead ends: 5125 [2020-12-17 14:31:34,993 INFO L226 Difference]: Without dead ends: 4825 [2020-12-17 14:31:34,993 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=150, Invalid=450, Unknown=0, NotChecked=0, Total=600 [2020-12-17 14:31:34,994 INFO L78 Accepts]: Start accepts. Automaton has 4825 states. Word has length 66 [2020-12-17 14:31:34,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:31:34,995 INFO L481 AbstractCegarLoop]: Abstraction has 4825 states. [2020-12-17 14:31:34,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:34,995 INFO L276 IsEmpty]: Start isEmpty. Operand 4825 states. [2020-12-17 14:31:35,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-17 14:31:35,006 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:31:35,006 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:31:35,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-17 14:31:35,207 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:31:35,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:31:35,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1331530518, now seen corresponding path program 17 times [2020-12-17 14:31:35,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:31:35,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315782428] [2020-12-17 14:31:35,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:31:35,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:35,403 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:35,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315782428] [2020-12-17 14:31:35,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963897716] [2020-12-17 14:31:35,403 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:35,485 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-12-17 14:31:35,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:31:35,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-17 14:31:35,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:31:35,537 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:31:35,557 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:35,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:31:35,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-12-17 14:31:35,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118631270] [2020-12-17 14:31:35,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-17 14:31:35,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:31:35,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-17 14:31:35,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-12-17 14:31:35,560 INFO L87 Difference]: Start difference. First operand 4825 states. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:36,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:31:36,006 INFO L93 Difference]: Finished difference Result 5225 states and 12170 transitions. [2020-12-17 14:31:36,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-17 14:31:36,006 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2020-12-17 14:31:36,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:31:36,013 INFO L225 Difference]: With dead ends: 5225 [2020-12-17 14:31:36,014 INFO L226 Difference]: Without dead ends: 4925 [2020-12-17 14:31:36,014 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2020-12-17 14:31:36,014 INFO L78 Accepts]: Start accepts. Automaton has 4925 states. Word has length 66 [2020-12-17 14:31:36,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:31:36,015 INFO L481 AbstractCegarLoop]: Abstraction has 4925 states. [2020-12-17 14:31:36,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:36,015 INFO L276 IsEmpty]: Start isEmpty. Operand 4925 states. [2020-12-17 14:31:36,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-17 14:31:36,022 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:31:36,022 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:31:36,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-12-17 14:31:36,223 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:31:36,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:31:36,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1346701894, now seen corresponding path program 18 times [2020-12-17 14:31:36,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:31:36,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059768115] [2020-12-17 14:31:36,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:31:36,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:36,429 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:36,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059768115] [2020-12-17 14:31:36,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505528575] [2020-12-17 14:31:36,430 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:36,518 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-12-17 14:31:36,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:31:36,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-17 14:31:36,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:31:36,553 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:31:36,614 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:31:36,628 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:36,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:31:36,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2020-12-17 14:31:36,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235834403] [2020-12-17 14:31:36,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-17 14:31:36,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:31:36,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-17 14:31:36,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-12-17 14:31:36,630 INFO L87 Difference]: Start difference. First operand 4925 states. Second operand has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:37,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:31:37,306 INFO L93 Difference]: Finished difference Result 5425 states and 12570 transitions. [2020-12-17 14:31:37,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-17 14:31:37,307 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2020-12-17 14:31:37,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:31:37,315 INFO L225 Difference]: With dead ends: 5425 [2020-12-17 14:31:37,315 INFO L226 Difference]: Without dead ends: 5125 [2020-12-17 14:31:37,316 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2020-12-17 14:31:37,316 INFO L78 Accepts]: Start accepts. Automaton has 5125 states. Word has length 66 [2020-12-17 14:31:37,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:31:37,317 INFO L481 AbstractCegarLoop]: Abstraction has 5125 states. [2020-12-17 14:31:37,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:37,317 INFO L276 IsEmpty]: Start isEmpty. Operand 5125 states. [2020-12-17 14:31:37,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-17 14:31:37,334 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:31:37,334 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:31:37,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-17 14:31:37,547 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:31:37,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:31:37,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1492528600, now seen corresponding path program 19 times [2020-12-17 14:31:37,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:31:37,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497062782] [2020-12-17 14:31:37,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:31:37,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:37,726 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:37,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497062782] [2020-12-17 14:31:37,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616671450] [2020-12-17 14:31:37,727 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:37,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:37,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-17 14:31:37,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:31:37,854 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:31:37,867 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:37,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:31:37,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-12-17 14:31:37,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560341492] [2020-12-17 14:31:37,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-17 14:31:37,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:31:37,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-17 14:31:37,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-12-17 14:31:37,869 INFO L87 Difference]: Start difference. First operand 5125 states. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:38,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:31:38,417 INFO L93 Difference]: Finished difference Result 5655 states and 13030 transitions. [2020-12-17 14:31:38,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-17 14:31:38,418 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2020-12-17 14:31:38,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:31:38,430 INFO L225 Difference]: With dead ends: 5655 [2020-12-17 14:31:38,430 INFO L226 Difference]: Without dead ends: 5355 [2020-12-17 14:31:38,431 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=195, Invalid=561, Unknown=0, NotChecked=0, Total=756 [2020-12-17 14:31:38,431 INFO L78 Accepts]: Start accepts. Automaton has 5355 states. Word has length 66 [2020-12-17 14:31:38,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:31:38,432 INFO L481 AbstractCegarLoop]: Abstraction has 5355 states. [2020-12-17 14:31:38,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:38,432 INFO L276 IsEmpty]: Start isEmpty. Operand 5355 states. [2020-12-17 14:31:38,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-17 14:31:38,440 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:31:38,440 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:31:38,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:38,656 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:31:38,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:31:38,656 INFO L82 PathProgramCache]: Analyzing trace with hash -2077628152, now seen corresponding path program 20 times [2020-12-17 14:31:38,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:31:38,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935806929] [2020-12-17 14:31:38,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:31:38,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:38,844 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:38,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935806929] [2020-12-17 14:31:38,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002150910] [2020-12-17 14:31:38,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:38,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 14:31:38,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:31:38,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-17 14:31:38,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:31:38,972 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:31:39,012 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:31:39,022 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:39,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:31:39,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2020-12-17 14:31:39,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912728906] [2020-12-17 14:31:39,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-17 14:31:39,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:31:39,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-17 14:31:39,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-12-17 14:31:39,024 INFO L87 Difference]: Start difference. First operand 5355 states. Second operand has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:39,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:31:39,601 INFO L93 Difference]: Finished difference Result 5795 states and 13310 transitions. [2020-12-17 14:31:39,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-17 14:31:39,602 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2020-12-17 14:31:39,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:31:39,610 INFO L225 Difference]: With dead ends: 5795 [2020-12-17 14:31:39,610 INFO L226 Difference]: Without dead ends: 5495 [2020-12-17 14:31:39,611 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=218, Invalid=652, Unknown=0, NotChecked=0, Total=870 [2020-12-17 14:31:39,611 INFO L78 Accepts]: Start accepts. Automaton has 5495 states. Word has length 66 [2020-12-17 14:31:39,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:31:39,612 INFO L481 AbstractCegarLoop]: Abstraction has 5495 states. [2020-12-17 14:31:39,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:39,612 INFO L276 IsEmpty]: Start isEmpty. Operand 5495 states. [2020-12-17 14:31:39,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-17 14:31:39,619 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:31:39,620 INFO L504 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:31:39,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-12-17 14:31:39,834 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:31:39,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:31:39,834 INFO L82 PathProgramCache]: Analyzing trace with hash -385674647, now seen corresponding path program 21 times [2020-12-17 14:31:39,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:31:39,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945263722] [2020-12-17 14:31:39,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:31:39,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:40,008 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:31:40,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945263722] [2020-12-17 14:31:40,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294072035] [2020-12-17 14:31:40,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:40,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-12-17 14:31:40,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:31:40,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-17 14:31:40,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:31:40,137 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:31:40,170 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:31:40,184 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:31:40,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:31:40,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2020-12-17 14:31:40,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478175937] [2020-12-17 14:31:40,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-17 14:31:40,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:31:40,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-17 14:31:40,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-12-17 14:31:40,187 INFO L87 Difference]: Start difference. First operand 5495 states. Second operand has 15 states, 15 states have (on average 4.6) internal successors, (69), 15 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:41,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:31:41,079 INFO L93 Difference]: Finished difference Result 6455 states and 15142 transitions. [2020-12-17 14:31:41,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-12-17 14:31:41,081 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.6) internal successors, (69), 15 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2020-12-17 14:31:41,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:31:41,090 INFO L225 Difference]: With dead ends: 6455 [2020-12-17 14:31:41,091 INFO L226 Difference]: Without dead ends: 5760 [2020-12-17 14:31:41,092 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=363, Invalid=969, Unknown=0, NotChecked=0, Total=1332 [2020-12-17 14:31:41,092 INFO L78 Accepts]: Start accepts. Automaton has 5760 states. Word has length 66 [2020-12-17 14:31:41,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:31:41,093 INFO L481 AbstractCegarLoop]: Abstraction has 5760 states. [2020-12-17 14:31:41,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.6) internal successors, (69), 15 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:41,093 INFO L276 IsEmpty]: Start isEmpty. Operand 5760 states. [2020-12-17 14:31:41,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-17 14:31:41,101 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:31:41,102 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:31:41,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:41,307 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:31:41,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:31:41,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1143144034, now seen corresponding path program 22 times [2020-12-17 14:31:41,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:31:41,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965832159] [2020-12-17 14:31:41,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:31:41,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:41,546 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:41,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965832159] [2020-12-17 14:31:41,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567384040] [2020-12-17 14:31:41,546 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:41,628 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 14:31:41,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:31:41,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-17 14:31:41,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:31:41,663 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:31:41,676 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:41,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:31:41,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2020-12-17 14:31:41,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905842206] [2020-12-17 14:31:41,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-17 14:31:41,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:31:41,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-17 14:31:41,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-12-17 14:31:41,683 INFO L87 Difference]: Start difference. First operand 5760 states. Second operand has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:42,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:31:42,047 INFO L93 Difference]: Finished difference Result 6160 states and 14190 transitions. [2020-12-17 14:31:42,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-17 14:31:42,047 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2020-12-17 14:31:42,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:31:42,056 INFO L225 Difference]: With dead ends: 6160 [2020-12-17 14:31:42,056 INFO L226 Difference]: Without dead ends: 5860 [2020-12-17 14:31:42,056 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=410, Unknown=0, NotChecked=0, Total=552 [2020-12-17 14:31:42,056 INFO L78 Accepts]: Start accepts. Automaton has 5860 states. Word has length 71 [2020-12-17 14:31:42,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:31:42,057 INFO L481 AbstractCegarLoop]: Abstraction has 5860 states. [2020-12-17 14:31:42,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:42,057 INFO L276 IsEmpty]: Start isEmpty. Operand 5860 states. [2020-12-17 14:31:42,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-17 14:31:42,064 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:31:42,064 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:31:42,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-12-17 14:31:42,266 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:31:42,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:31:42,266 INFO L82 PathProgramCache]: Analyzing trace with hash -640638384, now seen corresponding path program 23 times [2020-12-17 14:31:42,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:31:42,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929667791] [2020-12-17 14:31:42,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:31:42,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:42,490 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:42,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929667791] [2020-12-17 14:31:42,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62679300] [2020-12-17 14:31:42,490 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:42,568 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-12-17 14:31:42,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:31:42,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-17 14:31:42,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:31:42,592 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:31:42,614 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:31:42,626 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:42,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:31:42,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2020-12-17 14:31:42,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767139027] [2020-12-17 14:31:42,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-17 14:31:42,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:31:42,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-17 14:31:42,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-12-17 14:31:42,629 INFO L87 Difference]: Start difference. First operand 5860 states. Second operand has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:43,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:31:43,131 INFO L93 Difference]: Finished difference Result 6260 states and 14390 transitions. [2020-12-17 14:31:43,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-17 14:31:43,132 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2020-12-17 14:31:43,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:31:43,142 INFO L225 Difference]: With dead ends: 6260 [2020-12-17 14:31:43,142 INFO L226 Difference]: Without dead ends: 5960 [2020-12-17 14:31:43,143 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2020-12-17 14:31:43,143 INFO L78 Accepts]: Start accepts. Automaton has 5960 states. Word has length 71 [2020-12-17 14:31:43,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:31:43,143 INFO L481 AbstractCegarLoop]: Abstraction has 5960 states. [2020-12-17 14:31:43,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:43,144 INFO L276 IsEmpty]: Start isEmpty. Operand 5960 states. [2020-12-17 14:31:43,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-17 14:31:43,154 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:31:43,154 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:31:43,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:43,367 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:31:43,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:31:43,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1373917194, now seen corresponding path program 24 times [2020-12-17 14:31:43,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:31:43,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97734488] [2020-12-17 14:31:43,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:31:43,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:43,701 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:43,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97734488] [2020-12-17 14:31:43,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369030498] [2020-12-17 14:31:43,702 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:43,799 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-12-17 14:31:43,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:31:43,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-17 14:31:43,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:31:43,842 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:31:43,858 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:43,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:31:43,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2020-12-17 14:31:43,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881104137] [2020-12-17 14:31:43,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-17 14:31:43,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:31:43,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-17 14:31:43,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-12-17 14:31:43,860 INFO L87 Difference]: Start difference. First operand 5960 states. Second operand has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:44,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:31:44,333 INFO L93 Difference]: Finished difference Result 6360 states and 14590 transitions. [2020-12-17 14:31:44,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-17 14:31:44,335 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2020-12-17 14:31:44,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:31:44,346 INFO L225 Difference]: With dead ends: 6360 [2020-12-17 14:31:44,346 INFO L226 Difference]: Without dead ends: 6060 [2020-12-17 14:31:44,347 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2020-12-17 14:31:44,347 INFO L78 Accepts]: Start accepts. Automaton has 6060 states. Word has length 71 [2020-12-17 14:31:44,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:31:44,348 INFO L481 AbstractCegarLoop]: Abstraction has 6060 states. [2020-12-17 14:31:44,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:44,348 INFO L276 IsEmpty]: Start isEmpty. Operand 6060 states. [2020-12-17 14:31:44,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-17 14:31:44,356 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:31:44,356 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:31:44,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-12-17 14:31:44,557 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:31:44,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:31:44,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1358745818, now seen corresponding path program 25 times [2020-12-17 14:31:44,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:31:44,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358295170] [2020-12-17 14:31:44,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:31:44,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:44,775 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:44,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358295170] [2020-12-17 14:31:44,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155694554] [2020-12-17 14:31:44,776 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:44,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:44,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-17 14:31:44,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:31:44,879 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:31:44,901 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:31:44,911 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:44,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:31:44,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2020-12-17 14:31:44,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136804235] [2020-12-17 14:31:44,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-17 14:31:44,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:31:44,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-17 14:31:44,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-12-17 14:31:44,913 INFO L87 Difference]: Start difference. First operand 6060 states. Second operand has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:45,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:31:45,529 INFO L93 Difference]: Finished difference Result 6460 states and 14790 transitions. [2020-12-17 14:31:45,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-17 14:31:45,529 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2020-12-17 14:31:45,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:31:45,541 INFO L225 Difference]: With dead ends: 6460 [2020-12-17 14:31:45,541 INFO L226 Difference]: Without dead ends: 6160 [2020-12-17 14:31:45,541 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=210, Invalid=660, Unknown=0, NotChecked=0, Total=870 [2020-12-17 14:31:45,542 INFO L78 Accepts]: Start accepts. Automaton has 6160 states. Word has length 71 [2020-12-17 14:31:45,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:31:45,542 INFO L481 AbstractCegarLoop]: Abstraction has 6160 states. [2020-12-17 14:31:45,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:45,542 INFO L276 IsEmpty]: Start isEmpty. Operand 6160 states. [2020-12-17 14:31:45,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-17 14:31:45,550 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:31:45,550 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:31:45,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:45,751 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:31:45,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:31:45,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1212919112, now seen corresponding path program 26 times [2020-12-17 14:31:45,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:31:45,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123056621] [2020-12-17 14:31:45,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:31:45,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:45,933 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:45,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123056621] [2020-12-17 14:31:45,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226901552] [2020-12-17 14:31:45,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:46,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 14:31:46,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:31:46,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-17 14:31:46,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:31:46,044 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:31:46,054 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:46,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:31:46,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2020-12-17 14:31:46,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766602949] [2020-12-17 14:31:46,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-17 14:31:46,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:31:46,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-17 14:31:46,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-12-17 14:31:46,059 INFO L87 Difference]: Start difference. First operand 6160 states. Second operand has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:46,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:31:46,638 INFO L93 Difference]: Finished difference Result 6690 states and 15250 transitions. [2020-12-17 14:31:46,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-17 14:31:46,639 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2020-12-17 14:31:46,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:31:46,652 INFO L225 Difference]: With dead ends: 6690 [2020-12-17 14:31:46,653 INFO L226 Difference]: Without dead ends: 6390 [2020-12-17 14:31:46,653 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=192, Invalid=564, Unknown=0, NotChecked=0, Total=756 [2020-12-17 14:31:46,654 INFO L78 Accepts]: Start accepts. Automaton has 6390 states. Word has length 71 [2020-12-17 14:31:46,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:31:46,654 INFO L481 AbstractCegarLoop]: Abstraction has 6390 states. [2020-12-17 14:31:46,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:46,654 INFO L276 IsEmpty]: Start isEmpty. Operand 6390 states. [2020-12-17 14:31:46,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-17 14:31:46,664 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:31:46,664 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:31:46,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-12-17 14:31:46,880 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:31:46,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:31:46,882 INFO L82 PathProgramCache]: Analyzing trace with hash -488108568, now seen corresponding path program 27 times [2020-12-17 14:31:46,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:31:46,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820586545] [2020-12-17 14:31:46,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:31:46,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:47,125 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:47,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820586545] [2020-12-17 14:31:47,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013404275] [2020-12-17 14:31:47,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:47,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-12-17 14:31:47,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:31:47,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-17 14:31:47,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:31:47,271 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:31:47,293 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:31:47,310 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-17 14:31:47,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:31:47,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2020-12-17 14:31:47,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739085198] [2020-12-17 14:31:47,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-17 14:31:47,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:31:47,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-17 14:31:47,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-12-17 14:31:47,315 INFO L87 Difference]: Start difference. First operand 6390 states. Second operand has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:48,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:31:48,108 INFO L93 Difference]: Finished difference Result 6830 states and 15530 transitions. [2020-12-17 14:31:48,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-17 14:31:48,109 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2020-12-17 14:31:48,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:31:48,120 INFO L225 Difference]: With dead ends: 6830 [2020-12-17 14:31:48,121 INFO L226 Difference]: Without dead ends: 6530 [2020-12-17 14:31:48,121 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=251, Invalid=741, Unknown=0, NotChecked=0, Total=992 [2020-12-17 14:31:48,121 INFO L78 Accepts]: Start accepts. Automaton has 6530 states. Word has length 71 [2020-12-17 14:31:48,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:31:48,122 INFO L481 AbstractCegarLoop]: Abstraction has 6530 states. [2020-12-17 14:31:48,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:48,122 INFO L276 IsEmpty]: Start isEmpty. Operand 6530 states. [2020-12-17 14:31:48,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-17 14:31:48,131 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:31:48,131 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:31:48,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:48,336 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:31:48,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:31:48,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1203844937, now seen corresponding path program 28 times [2020-12-17 14:31:48,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:31:48,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106467032] [2020-12-17 14:31:48,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:31:48,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:48,630 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:31:48,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106467032] [2020-12-17 14:31:48,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806349085] [2020-12-17 14:31:48,631 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:48,729 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 14:31:48,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:31:48,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-17 14:31:48,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:31:48,781 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:31:48,813 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:31:48,825 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:31:48,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:31:48,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2020-12-17 14:31:48,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2453289] [2020-12-17 14:31:48,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-17 14:31:48,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:31:48,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-17 14:31:48,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-12-17 14:31:48,829 INFO L87 Difference]: Start difference. First operand 6530 states. Second operand has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:49,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:31:49,565 INFO L93 Difference]: Finished difference Result 7106 states and 16338 transitions. [2020-12-17 14:31:49,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-17 14:31:49,565 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2020-12-17 14:31:49,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:31:49,574 INFO L225 Difference]: With dead ends: 7106 [2020-12-17 14:31:49,574 INFO L226 Difference]: Without dead ends: 6605 [2020-12-17 14:31:49,575 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=333, Invalid=789, Unknown=0, NotChecked=0, Total=1122 [2020-12-17 14:31:49,575 INFO L78 Accepts]: Start accepts. Automaton has 6605 states. Word has length 71 [2020-12-17 14:31:49,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:31:49,575 INFO L481 AbstractCegarLoop]: Abstraction has 6605 states. [2020-12-17 14:31:49,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:49,576 INFO L276 IsEmpty]: Start isEmpty. Operand 6605 states. [2020-12-17 14:31:49,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-17 14:31:49,586 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:31:49,586 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:31:49,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-12-17 14:31:49,800 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:31:49,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:31:49,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1682215820, now seen corresponding path program 29 times [2020-12-17 14:31:49,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:31:49,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070739591] [2020-12-17 14:31:49,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:31:49,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:50,134 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:31:50,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070739591] [2020-12-17 14:31:50,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851950190] [2020-12-17 14:31:50,135 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:50,214 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-12-17 14:31:50,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:31:50,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-17 14:31:50,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:31:50,271 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:31:50,285 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:31:50,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:31:50,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2020-12-17 14:31:50,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713058865] [2020-12-17 14:31:50,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-17 14:31:50,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:31:50,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-17 14:31:50,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-12-17 14:31:50,292 INFO L87 Difference]: Start difference. First operand 6605 states. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:50,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:31:50,703 INFO L93 Difference]: Finished difference Result 7005 states and 15935 transitions. [2020-12-17 14:31:50,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-17 14:31:50,704 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2020-12-17 14:31:50,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:31:50,715 INFO L225 Difference]: With dead ends: 7005 [2020-12-17 14:31:50,715 INFO L226 Difference]: Without dead ends: 6675 [2020-12-17 14:31:50,716 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=215, Invalid=597, Unknown=0, NotChecked=0, Total=812 [2020-12-17 14:31:50,716 INFO L78 Accepts]: Start accepts. Automaton has 6675 states. Word has length 76 [2020-12-17 14:31:50,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:31:50,717 INFO L481 AbstractCegarLoop]: Abstraction has 6675 states. [2020-12-17 14:31:50,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:50,717 INFO L276 IsEmpty]: Start isEmpty. Operand 6675 states. [2020-12-17 14:31:50,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-17 14:31:50,726 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:31:50,726 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:31:50,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-12-17 14:31:50,927 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:31:50,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:31:50,928 INFO L82 PathProgramCache]: Analyzing trace with hash 247870558, now seen corresponding path program 30 times [2020-12-17 14:31:50,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:31:50,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842445977] [2020-12-17 14:31:50,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:31:50,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:51,230 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:31:51,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842445977] [2020-12-17 14:31:51,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621682958] [2020-12-17 14:31:51,231 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:51,320 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-12-17 14:31:51,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:31:51,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-17 14:31:51,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:31:51,349 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:31:51,399 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:31:51,413 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:31:51,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:31:51,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2020-12-17 14:31:51,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664917366] [2020-12-17 14:31:51,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-17 14:31:51,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:31:51,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-17 14:31:51,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2020-12-17 14:31:51,415 INFO L87 Difference]: Start difference. First operand 6675 states. Second operand has 17 states, 17 states have (on average 4.705882352941177) internal successors, (80), 17 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:51,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:31:51,995 INFO L93 Difference]: Finished difference Result 7075 states and 16075 transitions. [2020-12-17 14:31:51,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-17 14:31:51,996 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.705882352941177) internal successors, (80), 17 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2020-12-17 14:31:51,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:31:52,005 INFO L225 Difference]: With dead ends: 7075 [2020-12-17 14:31:52,005 INFO L226 Difference]: Without dead ends: 6745 [2020-12-17 14:31:52,006 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=792, Unknown=0, NotChecked=0, Total=1056 [2020-12-17 14:31:52,006 INFO L78 Accepts]: Start accepts. Automaton has 6745 states. Word has length 76 [2020-12-17 14:31:52,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:31:52,007 INFO L481 AbstractCegarLoop]: Abstraction has 6745 states. [2020-12-17 14:31:52,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.705882352941177) internal successors, (80), 17 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:52,007 INFO L276 IsEmpty]: Start isEmpty. Operand 6745 states. [2020-12-17 14:31:52,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-17 14:31:52,015 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:31:52,015 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:31:52,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-12-17 14:31:52,216 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:31:52,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:31:52,216 INFO L82 PathProgramCache]: Analyzing trace with hash 2074066552, now seen corresponding path program 31 times [2020-12-17 14:31:52,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:31:52,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545563740] [2020-12-17 14:31:52,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:31:52,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:52,452 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:31:52,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545563740] [2020-12-17 14:31:52,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639135401] [2020-12-17 14:31:52,452 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:52,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:52,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-17 14:31:52,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:31:52,604 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:31:52,616 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:31:52,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:31:52,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2020-12-17 14:31:52,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640067941] [2020-12-17 14:31:52,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-17 14:31:52,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:31:52,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-17 14:31:52,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-12-17 14:31:52,618 INFO L87 Difference]: Start difference. First operand 6745 states. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:53,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:31:53,152 INFO L93 Difference]: Finished difference Result 7145 states and 16215 transitions. [2020-12-17 14:31:53,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-17 14:31:53,153 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2020-12-17 14:31:53,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:31:53,162 INFO L225 Difference]: With dead ends: 7145 [2020-12-17 14:31:53,162 INFO L226 Difference]: Without dead ends: 6815 [2020-12-17 14:31:53,163 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=229, Invalid=701, Unknown=0, NotChecked=0, Total=930 [2020-12-17 14:31:53,163 INFO L78 Accepts]: Start accepts. Automaton has 6815 states. Word has length 76 [2020-12-17 14:31:53,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:31:53,163 INFO L481 AbstractCegarLoop]: Abstraction has 6815 states. [2020-12-17 14:31:53,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:53,164 INFO L276 IsEmpty]: Start isEmpty. Operand 6815 states. [2020-12-17 14:31:53,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-17 14:31:53,172 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:31:53,172 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:31:53,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-12-17 14:31:53,374 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:31:53,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:31:53,375 INFO L82 PathProgramCache]: Analyzing trace with hash -59228856, now seen corresponding path program 32 times [2020-12-17 14:31:53,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:31:53,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328227641] [2020-12-17 14:31:53,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:31:53,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:53,747 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:31:53,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328227641] [2020-12-17 14:31:53,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519516900] [2020-12-17 14:31:53,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:53,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 14:31:53,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:31:53,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-17 14:31:53,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:31:53,867 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:31:53,909 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:31:53,923 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:31:53,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:31:53,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2020-12-17 14:31:53,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786214191] [2020-12-17 14:31:53,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-17 14:31:53,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:31:53,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-17 14:31:53,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2020-12-17 14:31:53,925 INFO L87 Difference]: Start difference. First operand 6815 states. Second operand has 17 states, 17 states have (on average 4.705882352941177) internal successors, (80), 17 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:54,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:31:54,633 INFO L93 Difference]: Finished difference Result 7215 states and 16355 transitions. [2020-12-17 14:31:54,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-17 14:31:54,633 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.705882352941177) internal successors, (80), 17 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2020-12-17 14:31:54,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:31:54,642 INFO L225 Difference]: With dead ends: 7215 [2020-12-17 14:31:54,643 INFO L226 Difference]: Without dead ends: 6885 [2020-12-17 14:31:54,644 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=286, Invalid=904, Unknown=0, NotChecked=0, Total=1190 [2020-12-17 14:31:54,644 INFO L78 Accepts]: Start accepts. Automaton has 6885 states. Word has length 76 [2020-12-17 14:31:54,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:31:54,645 INFO L481 AbstractCegarLoop]: Abstraction has 6885 states. [2020-12-17 14:31:54,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.705882352941177) internal successors, (80), 17 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:54,646 INFO L276 IsEmpty]: Start isEmpty. Operand 6885 states. [2020-12-17 14:31:54,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-17 14:31:54,656 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:31:54,657 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:31:54,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:54,872 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:31:54,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:31:54,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1831372022, now seen corresponding path program 33 times [2020-12-17 14:31:54,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:31:54,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182836450] [2020-12-17 14:31:54,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:31:54,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:55,090 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:31:55,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182836450] [2020-12-17 14:31:55,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046382528] [2020-12-17 14:31:55,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:55,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-12-17 14:31:55,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:31:55,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-17 14:31:55,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:31:55,243 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:31:55,255 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:31:55,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:31:55,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2020-12-17 14:31:55,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112268209] [2020-12-17 14:31:55,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-17 14:31:55,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:31:55,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-17 14:31:55,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-12-17 14:31:55,258 INFO L87 Difference]: Start difference. First operand 6885 states. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:55,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:31:55,829 INFO L93 Difference]: Finished difference Result 7285 states and 16495 transitions. [2020-12-17 14:31:55,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-17 14:31:55,830 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2020-12-17 14:31:55,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:31:55,838 INFO L225 Difference]: With dead ends: 7285 [2020-12-17 14:31:55,839 INFO L226 Difference]: Without dead ends: 6955 [2020-12-17 14:31:55,839 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=259, Invalid=797, Unknown=0, NotChecked=0, Total=1056 [2020-12-17 14:31:55,839 INFO L78 Accepts]: Start accepts. Automaton has 6955 states. Word has length 76 [2020-12-17 14:31:55,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:31:55,839 INFO L481 AbstractCegarLoop]: Abstraction has 6955 states. [2020-12-17 14:31:55,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:55,840 INFO L276 IsEmpty]: Start isEmpty. Operand 6955 states. [2020-12-17 14:31:55,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-17 14:31:55,846 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:31:55,847 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:31:56,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2020-12-17 14:31:56,048 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:31:56,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:31:56,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1241888826, now seen corresponding path program 34 times [2020-12-17 14:31:56,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:31:56,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563052268] [2020-12-17 14:31:56,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:31:56,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:56,276 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:31:56,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563052268] [2020-12-17 14:31:56,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179314821] [2020-12-17 14:31:56,276 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:56,359 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 14:31:56,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:31:56,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-17 14:31:56,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:31:56,408 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:31:56,448 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:31:56,457 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:31:56,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:31:56,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2020-12-17 14:31:56,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574184563] [2020-12-17 14:31:56,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-17 14:31:56,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:31:56,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-17 14:31:56,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2020-12-17 14:31:56,460 INFO L87 Difference]: Start difference. First operand 6955 states. Second operand has 17 states, 17 states have (on average 4.705882352941177) internal successors, (80), 17 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:56,862 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 13 [2020-12-17 14:31:57,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:31:57,418 INFO L93 Difference]: Finished difference Result 7355 states and 16635 transitions. [2020-12-17 14:31:57,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-17 14:31:57,419 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.705882352941177) internal successors, (80), 17 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2020-12-17 14:31:57,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:31:57,433 INFO L225 Difference]: With dead ends: 7355 [2020-12-17 14:31:57,434 INFO L226 Difference]: Without dead ends: 7025 [2020-12-17 14:31:57,435 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=324, Invalid=1008, Unknown=0, NotChecked=0, Total=1332 [2020-12-17 14:31:57,435 INFO L78 Accepts]: Start accepts. Automaton has 7025 states. Word has length 76 [2020-12-17 14:31:57,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:31:57,435 INFO L481 AbstractCegarLoop]: Abstraction has 7025 states. [2020-12-17 14:31:57,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.705882352941177) internal successors, (80), 17 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:57,436 INFO L276 IsEmpty]: Start isEmpty. Operand 7025 states. [2020-12-17 14:31:57,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-17 14:31:57,444 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:31:57,444 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:31:57,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2020-12-17 14:31:57,645 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:31:57,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:31:57,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1963045108, now seen corresponding path program 35 times [2020-12-17 14:31:57,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:31:57,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5478546] [2020-12-17 14:31:57,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:31:57,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:57,921 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:31:57,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5478546] [2020-12-17 14:31:57,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490672129] [2020-12-17 14:31:57,922 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:58,041 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-12-17 14:31:58,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:31:58,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-17 14:31:58,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:31:58,107 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:31:58,128 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:31:58,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:31:58,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2020-12-17 14:31:58,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866365678] [2020-12-17 14:31:58,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-17 14:31:58,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:31:58,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-17 14:31:58,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2020-12-17 14:31:58,132 INFO L87 Difference]: Start difference. First operand 7025 states. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:58,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:31:58,829 INFO L93 Difference]: Finished difference Result 7685 states and 17295 transitions. [2020-12-17 14:31:58,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-17 14:31:58,830 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2020-12-17 14:31:58,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:31:58,839 INFO L225 Difference]: With dead ends: 7685 [2020-12-17 14:31:58,839 INFO L226 Difference]: Without dead ends: 7355 [2020-12-17 14:31:58,840 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=305, Invalid=885, Unknown=0, NotChecked=0, Total=1190 [2020-12-17 14:31:58,840 INFO L78 Accepts]: Start accepts. Automaton has 7355 states. Word has length 76 [2020-12-17 14:31:58,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:31:58,840 INFO L481 AbstractCegarLoop]: Abstraction has 7355 states. [2020-12-17 14:31:58,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:31:58,840 INFO L276 IsEmpty]: Start isEmpty. Operand 7355 states. [2020-12-17 14:31:58,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-17 14:31:58,848 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:31:58,849 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:31:59,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:59,063 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:31:59,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:31:59,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1412319292, now seen corresponding path program 36 times [2020-12-17 14:31:59,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:31:59,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614527747] [2020-12-17 14:31:59,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:31:59,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:31:59,306 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:31:59,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614527747] [2020-12-17 14:31:59,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871073200] [2020-12-17 14:31:59,308 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:31:59,408 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-12-17 14:31:59,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:31:59,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-17 14:31:59,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:31:59,454 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:31:59,494 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:31:59,503 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:31:59,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:31:59,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2020-12-17 14:31:59,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593880967] [2020-12-17 14:31:59,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-17 14:31:59,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:31:59,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-17 14:31:59,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2020-12-17 14:31:59,505 INFO L87 Difference]: Start difference. First operand 7355 states. Second operand has 17 states, 17 states have (on average 4.705882352941177) internal successors, (80), 17 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:00,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:32:00,409 INFO L93 Difference]: Finished difference Result 7835 states and 17595 transitions. [2020-12-17 14:32:00,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-12-17 14:32:00,410 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.705882352941177) internal successors, (80), 17 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2020-12-17 14:32:00,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:32:00,420 INFO L225 Difference]: With dead ends: 7835 [2020-12-17 14:32:00,420 INFO L226 Difference]: Without dead ends: 7505 [2020-12-17 14:32:00,421 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=378, Invalid=1104, Unknown=0, NotChecked=0, Total=1482 [2020-12-17 14:32:00,421 INFO L78 Accepts]: Start accepts. Automaton has 7505 states. Word has length 76 [2020-12-17 14:32:00,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:32:00,421 INFO L481 AbstractCegarLoop]: Abstraction has 7505 states. [2020-12-17 14:32:00,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.705882352941177) internal successors, (80), 17 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:00,421 INFO L276 IsEmpty]: Start isEmpty. Operand 7505 states. [2020-12-17 14:32:00,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-17 14:32:00,429 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:32:00,429 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:32:00,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2020-12-17 14:32:00,630 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:32:00,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:32:00,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1060243374, now seen corresponding path program 37 times [2020-12-17 14:32:00,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:32:00,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082560473] [2020-12-17 14:32:00,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:32:00,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:32:00,920 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:00,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082560473] [2020-12-17 14:32:00,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060318778] [2020-12-17 14:32:00,921 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:01,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:32:01,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-17 14:32:01,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:32:01,065 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:32:01,080 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:01,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:32:01,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2020-12-17 14:32:01,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605319988] [2020-12-17 14:32:01,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-17 14:32:01,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:32:01,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-17 14:32:01,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-12-17 14:32:01,082 INFO L87 Difference]: Start difference. First operand 7505 states. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:01,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:32:01,858 INFO L93 Difference]: Finished difference Result 9057 states and 20999 transitions. [2020-12-17 14:32:01,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-12-17 14:32:01,859 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2020-12-17 14:32:01,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:32:01,873 INFO L225 Difference]: With dead ends: 9057 [2020-12-17 14:32:01,873 INFO L226 Difference]: Without dead ends: 8742 [2020-12-17 14:32:01,873 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=368, Invalid=964, Unknown=0, NotChecked=0, Total=1332 [2020-12-17 14:32:01,874 INFO L78 Accepts]: Start accepts. Automaton has 8742 states. Word has length 76 [2020-12-17 14:32:01,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:32:01,874 INFO L481 AbstractCegarLoop]: Abstraction has 8742 states. [2020-12-17 14:32:01,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:01,874 INFO L276 IsEmpty]: Start isEmpty. Operand 8742 states. [2020-12-17 14:32:01,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-12-17 14:32:01,884 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:32:01,884 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:32:02,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:02,086 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:32:02,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:32:02,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1063216604, now seen corresponding path program 38 times [2020-12-17 14:32:02,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:32:02,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013844042] [2020-12-17 14:32:02,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:32:02,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:32:02,334 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:02,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013844042] [2020-12-17 14:32:02,334 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323894590] [2020-12-17 14:32:02,334 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:02,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 14:32:02,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:32:02,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-17 14:32:02,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:32:02,456 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:32:02,490 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:32:02,501 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:02,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:32:02,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2020-12-17 14:32:02,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958113665] [2020-12-17 14:32:02,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-17 14:32:02,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:32:02,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-17 14:32:02,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2020-12-17 14:32:02,503 INFO L87 Difference]: Start difference. First operand 8742 states. Second operand has 17 states, 17 states have (on average 4.647058823529412) internal successors, (79), 17 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:03,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:32:03,601 INFO L93 Difference]: Finished difference Result 8550 states and 19361 transitions. [2020-12-17 14:32:03,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-17 14:32:03,601 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.647058823529412) internal successors, (79), 17 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2020-12-17 14:32:03,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:32:03,611 INFO L225 Difference]: With dead ends: 8550 [2020-12-17 14:32:03,611 INFO L226 Difference]: Without dead ends: 7835 [2020-12-17 14:32:03,612 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=484, Invalid=1408, Unknown=0, NotChecked=0, Total=1892 [2020-12-17 14:32:03,612 INFO L78 Accepts]: Start accepts. Automaton has 7835 states. Word has length 76 [2020-12-17 14:32:03,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:32:03,612 INFO L481 AbstractCegarLoop]: Abstraction has 7835 states. [2020-12-17 14:32:03,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.647058823529412) internal successors, (79), 17 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:03,613 INFO L276 IsEmpty]: Start isEmpty. Operand 7835 states. [2020-12-17 14:32:03,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-17 14:32:03,621 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:32:03,621 INFO L504 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:32:03,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-12-17 14:32:03,822 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:32:03,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:32:03,823 INFO L82 PathProgramCache]: Analyzing trace with hash -298810531, now seen corresponding path program 39 times [2020-12-17 14:32:03,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:32:03,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480447015] [2020-12-17 14:32:03,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:32:03,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:32:04,117 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:04,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480447015] [2020-12-17 14:32:04,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640381047] [2020-12-17 14:32:04,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:04,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-12-17 14:32:04,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:32:04,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-17 14:32:04,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:32:04,240 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:32:04,251 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:04,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:32:04,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2020-12-17 14:32:04,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010100976] [2020-12-17 14:32:04,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-17 14:32:04,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:32:04,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-17 14:32:04,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-12-17 14:32:04,253 INFO L87 Difference]: Start difference. First operand 7835 states. Second operand has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:04,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:32:04,790 INFO L93 Difference]: Finished difference Result 8220 states and 18435 transitions. [2020-12-17 14:32:04,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-17 14:32:04,790 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2020-12-17 14:32:04,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:32:04,800 INFO L225 Difference]: With dead ends: 8220 [2020-12-17 14:32:04,800 INFO L226 Difference]: Without dead ends: 7935 [2020-12-17 14:32:04,801 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=247, Invalid=623, Unknown=0, NotChecked=0, Total=870 [2020-12-17 14:32:04,801 INFO L78 Accepts]: Start accepts. Automaton has 7935 states. Word has length 81 [2020-12-17 14:32:04,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:32:04,801 INFO L481 AbstractCegarLoop]: Abstraction has 7935 states. [2020-12-17 14:32:04,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:04,802 INFO L276 IsEmpty]: Start isEmpty. Operand 7935 states. [2020-12-17 14:32:04,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-17 14:32:04,811 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:32:04,811 INFO L504 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:32:05,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:05,012 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:32:05,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:32:05,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1053083055, now seen corresponding path program 40 times [2020-12-17 14:32:05,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:32:05,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642323351] [2020-12-17 14:32:05,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:32:05,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:32:05,296 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:05,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642323351] [2020-12-17 14:32:05,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888814613] [2020-12-17 14:32:05,297 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:05,381 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 14:32:05,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:32:05,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-17 14:32:05,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:32:05,408 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:32:05,462 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:32:05,479 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:05,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:32:05,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2020-12-17 14:32:05,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754278234] [2020-12-17 14:32:05,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-17 14:32:05,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:32:05,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-17 14:32:05,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2020-12-17 14:32:05,482 INFO L87 Difference]: Start difference. First operand 7935 states. Second operand has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:06,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:32:06,056 INFO L93 Difference]: Finished difference Result 8320 states and 18635 transitions. [2020-12-17 14:32:06,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-17 14:32:06,056 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2020-12-17 14:32:06,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:32:06,072 INFO L225 Difference]: With dead ends: 8320 [2020-12-17 14:32:06,072 INFO L226 Difference]: Without dead ends: 8035 [2020-12-17 14:32:06,073 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=268, Invalid=788, Unknown=0, NotChecked=0, Total=1056 [2020-12-17 14:32:06,073 INFO L78 Accepts]: Start accepts. Automaton has 8035 states. Word has length 81 [2020-12-17 14:32:06,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:32:06,074 INFO L481 AbstractCegarLoop]: Abstraction has 8035 states. [2020-12-17 14:32:06,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:06,074 INFO L276 IsEmpty]: Start isEmpty. Operand 8035 states. [2020-12-17 14:32:06,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-17 14:32:06,090 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:32:06,090 INFO L504 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:32:06,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2020-12-17 14:32:06,304 INFO L429 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:32:06,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:32:06,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1745619127, now seen corresponding path program 41 times [2020-12-17 14:32:06,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:32:06,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820256862] [2020-12-17 14:32:06,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:32:06,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:32:06,597 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:06,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820256862] [2020-12-17 14:32:06,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417322458] [2020-12-17 14:32:06,598 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:06,684 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-12-17 14:32:06,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:32:06,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-17 14:32:06,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:32:06,737 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:32:06,756 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:06,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:32:06,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2020-12-17 14:32:06,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598479520] [2020-12-17 14:32:06,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-17 14:32:06,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:32:06,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-17 14:32:06,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-12-17 14:32:06,759 INFO L87 Difference]: Start difference. First operand 8035 states. Second operand has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:07,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:32:07,300 INFO L93 Difference]: Finished difference Result 8420 states and 18835 transitions. [2020-12-17 14:32:07,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-17 14:32:07,301 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2020-12-17 14:32:07,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:32:07,311 INFO L225 Difference]: With dead ends: 8420 [2020-12-17 14:32:07,312 INFO L226 Difference]: Without dead ends: 8135 [2020-12-17 14:32:07,312 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=262, Invalid=794, Unknown=0, NotChecked=0, Total=1056 [2020-12-17 14:32:07,312 INFO L78 Accepts]: Start accepts. Automaton has 8135 states. Word has length 81 [2020-12-17 14:32:07,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:32:07,313 INFO L481 AbstractCegarLoop]: Abstraction has 8135 states. [2020-12-17 14:32:07,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:07,313 INFO L276 IsEmpty]: Start isEmpty. Operand 8135 states. [2020-12-17 14:32:07,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-17 14:32:07,321 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:32:07,322 INFO L504 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:32:07,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-12-17 14:32:07,522 INFO L429 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:32:07,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:32:07,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1956131353, now seen corresponding path program 42 times [2020-12-17 14:32:07,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:32:07,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270366935] [2020-12-17 14:32:07,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:32:07,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:32:07,821 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:07,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270366935] [2020-12-17 14:32:07,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777560612] [2020-12-17 14:32:07,821 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:07,924 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-12-17 14:32:07,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:32:07,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-17 14:32:07,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:32:07,973 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:32:08,031 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:32:08,050 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:08,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:32:08,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2020-12-17 14:32:08,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974544548] [2020-12-17 14:32:08,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-17 14:32:08,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:32:08,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-17 14:32:08,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2020-12-17 14:32:08,053 INFO L87 Difference]: Start difference. First operand 8135 states. Second operand has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:08,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:32:08,780 INFO L93 Difference]: Finished difference Result 8720 states and 19435 transitions. [2020-12-17 14:32:08,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-17 14:32:08,781 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2020-12-17 14:32:08,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:32:08,795 INFO L225 Difference]: With dead ends: 8720 [2020-12-17 14:32:08,795 INFO L226 Difference]: Without dead ends: 8435 [2020-12-17 14:32:08,795 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=305, Invalid=955, Unknown=0, NotChecked=0, Total=1260 [2020-12-17 14:32:08,795 INFO L78 Accepts]: Start accepts. Automaton has 8435 states. Word has length 81 [2020-12-17 14:32:08,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:32:08,796 INFO L481 AbstractCegarLoop]: Abstraction has 8435 states. [2020-12-17 14:32:08,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:08,796 INFO L276 IsEmpty]: Start isEmpty. Operand 8435 states. [2020-12-17 14:32:08,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-17 14:32:08,936 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:32:08,937 INFO L504 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:32:09,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,46 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:09,138 INFO L429 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:32:09,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:32:09,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1783445575, now seen corresponding path program 43 times [2020-12-17 14:32:09,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:32:09,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105609379] [2020-12-17 14:32:09,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:32:09,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:32:09,434 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:09,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105609379] [2020-12-17 14:32:09,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386388507] [2020-12-17 14:32:09,435 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:09,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:32:09,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-17 14:32:09,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:32:09,582 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:32:09,596 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:09,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:32:09,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2020-12-17 14:32:09,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815085722] [2020-12-17 14:32:09,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-17 14:32:09,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:32:09,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-17 14:32:09,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-12-17 14:32:09,600 INFO L87 Difference]: Start difference. First operand 8435 states. Second operand has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:10,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:32:10,240 INFO L93 Difference]: Finished difference Result 8820 states and 19635 transitions. [2020-12-17 14:32:10,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-17 14:32:10,240 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2020-12-17 14:32:10,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:32:10,251 INFO L225 Difference]: With dead ends: 8820 [2020-12-17 14:32:10,251 INFO L226 Difference]: Without dead ends: 8535 [2020-12-17 14:32:10,252 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=311, Invalid=949, Unknown=0, NotChecked=0, Total=1260 [2020-12-17 14:32:10,252 INFO L78 Accepts]: Start accepts. Automaton has 8535 states. Word has length 81 [2020-12-17 14:32:10,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:32:10,252 INFO L481 AbstractCegarLoop]: Abstraction has 8535 states. [2020-12-17 14:32:10,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:10,252 INFO L276 IsEmpty]: Start isEmpty. Operand 8535 states. [2020-12-17 14:32:10,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-17 14:32:10,261 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:32:10,261 INFO L504 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:32:10,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2020-12-17 14:32:10,462 INFO L429 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:32:10,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:32:10,463 INFO L82 PathProgramCache]: Analyzing trace with hash -349849833, now seen corresponding path program 44 times [2020-12-17 14:32:10,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:32:10,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245203165] [2020-12-17 14:32:10,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:32:10,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:32:10,775 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:10,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245203165] [2020-12-17 14:32:10,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006980141] [2020-12-17 14:32:10,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:10,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 14:32:10,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:32:10,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-17 14:32:10,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:32:10,917 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:32:10,972 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:32:10,992 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:10,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:32:10,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2020-12-17 14:32:10,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054706666] [2020-12-17 14:32:10,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-17 14:32:10,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:32:10,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-17 14:32:10,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2020-12-17 14:32:10,996 INFO L87 Difference]: Start difference. First operand 8535 states. Second operand has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:11,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:32:11,932 INFO L93 Difference]: Finished difference Result 8920 states and 19835 transitions. [2020-12-17 14:32:11,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-17 14:32:11,933 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2020-12-17 14:32:11,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:32:11,952 INFO L225 Difference]: With dead ends: 8920 [2020-12-17 14:32:11,953 INFO L226 Difference]: Without dead ends: 8635 [2020-12-17 14:32:11,954 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=334, Invalid=1072, Unknown=0, NotChecked=0, Total=1406 [2020-12-17 14:32:11,954 INFO L78 Accepts]: Start accepts. Automaton has 8635 states. Word has length 81 [2020-12-17 14:32:11,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:32:11,955 INFO L481 AbstractCegarLoop]: Abstraction has 8635 states. [2020-12-17 14:32:11,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:11,955 INFO L276 IsEmpty]: Start isEmpty. Operand 8635 states. [2020-12-17 14:32:11,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-17 14:32:11,970 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:32:11,970 INFO L504 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:32:12,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:12,178 INFO L429 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:32:12,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:32:12,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1540751045, now seen corresponding path program 45 times [2020-12-17 14:32:12,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:32:12,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103023477] [2020-12-17 14:32:12,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:32:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:32:12,453 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:12,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103023477] [2020-12-17 14:32:12,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475677332] [2020-12-17 14:32:12,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:12,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-12-17 14:32:12,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:32:12,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-17 14:32:12,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:32:12,616 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:32:12,632 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:12,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:32:12,633 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2020-12-17 14:32:12,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786322355] [2020-12-17 14:32:12,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-17 14:32:12,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:32:12,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-17 14:32:12,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-12-17 14:32:12,637 INFO L87 Difference]: Start difference. First operand 8635 states. Second operand has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:13,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:32:13,382 INFO L93 Difference]: Finished difference Result 9020 states and 20035 transitions. [2020-12-17 14:32:13,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-12-17 14:32:13,383 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2020-12-17 14:32:13,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:32:13,395 INFO L225 Difference]: With dead ends: 9020 [2020-12-17 14:32:13,395 INFO L226 Difference]: Without dead ends: 8735 [2020-12-17 14:32:13,395 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=354, Invalid=1052, Unknown=0, NotChecked=0, Total=1406 [2020-12-17 14:32:13,396 INFO L78 Accepts]: Start accepts. Automaton has 8735 states. Word has length 81 [2020-12-17 14:32:13,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:32:13,396 INFO L481 AbstractCegarLoop]: Abstraction has 8735 states. [2020-12-17 14:32:13,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:13,396 INFO L276 IsEmpty]: Start isEmpty. Operand 8735 states. [2020-12-17 14:32:13,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-17 14:32:13,405 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:32:13,405 INFO L504 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:32:13,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:13,606 INFO L429 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:32:13,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:32:13,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1532509803, now seen corresponding path program 46 times [2020-12-17 14:32:13,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:32:13,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248962283] [2020-12-17 14:32:13,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:32:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:32:13,968 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:13,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248962283] [2020-12-17 14:32:13,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887550769] [2020-12-17 14:32:13,968 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:14,052 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 14:32:14,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:32:14,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-17 14:32:14,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:32:14,088 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:32:14,131 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:32:14,140 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:14,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:32:14,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2020-12-17 14:32:14,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868035027] [2020-12-17 14:32:14,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-17 14:32:14,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:32:14,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-17 14:32:14,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2020-12-17 14:32:14,143 INFO L87 Difference]: Start difference. First operand 8735 states. Second operand has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:15,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:32:15,014 INFO L93 Difference]: Finished difference Result 9120 states and 20235 transitions. [2020-12-17 14:32:15,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-12-17 14:32:15,014 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2020-12-17 14:32:15,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:32:15,025 INFO L225 Difference]: With dead ends: 9120 [2020-12-17 14:32:15,025 INFO L226 Difference]: Without dead ends: 8835 [2020-12-17 14:32:15,026 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=379, Invalid=1181, Unknown=0, NotChecked=0, Total=1560 [2020-12-17 14:32:15,026 INFO L78 Accepts]: Start accepts. Automaton has 8835 states. Word has length 81 [2020-12-17 14:32:15,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:32:15,026 INFO L481 AbstractCegarLoop]: Abstraction has 8835 states. [2020-12-17 14:32:15,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:15,027 INFO L276 IsEmpty]: Start isEmpty. Operand 8835 states. [2020-12-17 14:32:15,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-17 14:32:15,035 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:32:15,035 INFO L504 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:32:15,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2020-12-17 14:32:15,237 INFO L429 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:32:15,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:32:15,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1672424131, now seen corresponding path program 47 times [2020-12-17 14:32:15,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:32:15,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820871708] [2020-12-17 14:32:15,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:32:15,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:32:15,465 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:15,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820871708] [2020-12-17 14:32:15,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733814032] [2020-12-17 14:32:15,466 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:15,556 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-12-17 14:32:15,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:32:15,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-17 14:32:15,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:32:15,601 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:32:15,612 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:15,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:32:15,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2020-12-17 14:32:15,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780265341] [2020-12-17 14:32:15,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-17 14:32:15,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:32:15,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-17 14:32:15,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-12-17 14:32:15,614 INFO L87 Difference]: Start difference. First operand 8835 states. Second operand has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:16,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:32:16,361 INFO L93 Difference]: Finished difference Result 9325 states and 20710 transitions. [2020-12-17 14:32:16,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-12-17 14:32:16,361 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2020-12-17 14:32:16,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:32:16,373 INFO L225 Difference]: With dead ends: 9325 [2020-12-17 14:32:16,373 INFO L226 Difference]: Without dead ends: 9040 [2020-12-17 14:32:16,373 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=413, Invalid=1147, Unknown=0, NotChecked=0, Total=1560 [2020-12-17 14:32:16,373 INFO L78 Accepts]: Start accepts. Automaton has 9040 states. Word has length 81 [2020-12-17 14:32:16,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:32:16,374 INFO L481 AbstractCegarLoop]: Abstraction has 9040 states. [2020-12-17 14:32:16,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:16,374 INFO L276 IsEmpty]: Start isEmpty. Operand 9040 states. [2020-12-17 14:32:16,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-17 14:32:16,382 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:32:16,383 INFO L504 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:32:16,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:16,583 INFO L429 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:32:16,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:32:16,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1702940269, now seen corresponding path program 48 times [2020-12-17 14:32:16,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:32:16,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291732002] [2020-12-17 14:32:16,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:32:16,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:32:16,816 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:16,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291732002] [2020-12-17 14:32:16,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772675042] [2020-12-17 14:32:16,817 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:16,904 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-12-17 14:32:16,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:32:16,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-17 14:32:16,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:32:16,936 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:32:16,972 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:32:16,981 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:16,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:32:16,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2020-12-17 14:32:16,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893324783] [2020-12-17 14:32:16,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-17 14:32:16,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:32:16,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-17 14:32:16,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2020-12-17 14:32:16,983 INFO L87 Difference]: Start difference. First operand 9040 states. Second operand has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:18,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:32:18,140 INFO L93 Difference]: Finished difference Result 9974 states and 22359 transitions. [2020-12-17 14:32:18,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-12-17 14:32:18,141 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2020-12-17 14:32:18,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:32:18,155 INFO L225 Difference]: With dead ends: 9974 [2020-12-17 14:32:18,155 INFO L226 Difference]: Without dead ends: 9345 [2020-12-17 14:32:18,155 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=463, Invalid=1429, Unknown=0, NotChecked=0, Total=1892 [2020-12-17 14:32:18,155 INFO L78 Accepts]: Start accepts. Automaton has 9345 states. Word has length 81 [2020-12-17 14:32:18,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:32:18,156 INFO L481 AbstractCegarLoop]: Abstraction has 9345 states. [2020-12-17 14:32:18,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:18,156 INFO L276 IsEmpty]: Start isEmpty. Operand 9345 states. [2020-12-17 14:32:18,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-17 14:32:18,165 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:32:18,165 INFO L504 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:32:18,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-12-17 14:32:18,366 INFO L429 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:32:18,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:32:18,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1350864351, now seen corresponding path program 49 times [2020-12-17 14:32:18,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:32:18,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523811478] [2020-12-17 14:32:18,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:32:18,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:32:18,649 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 7 [2020-12-17 14:32:18,726 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:18,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523811478] [2020-12-17 14:32:18,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522279080] [2020-12-17 14:32:18,727 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:32:18,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-17 14:32:18,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:32:18,870 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:32:18,887 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:18,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:32:18,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2020-12-17 14:32:18,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792804039] [2020-12-17 14:32:18,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-17 14:32:18,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:32:18,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-17 14:32:18,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-12-17 14:32:18,890 INFO L87 Difference]: Start difference. First operand 9345 states. Second operand has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:19,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:32:19,781 INFO L93 Difference]: Finished difference Result 10817 states and 24784 transitions. [2020-12-17 14:32:19,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-17 14:32:19,782 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2020-12-17 14:32:19,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:32:19,796 INFO L225 Difference]: With dead ends: 10817 [2020-12-17 14:32:19,796 INFO L226 Difference]: Without dead ends: 10532 [2020-12-17 14:32:19,797 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=489, Invalid=1233, Unknown=0, NotChecked=0, Total=1722 [2020-12-17 14:32:19,797 INFO L78 Accepts]: Start accepts. Automaton has 10532 states. Word has length 81 [2020-12-17 14:32:19,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:32:19,797 INFO L481 AbstractCegarLoop]: Abstraction has 10532 states. [2020-12-17 14:32:19,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:19,798 INFO L276 IsEmpty]: Start isEmpty. Operand 10532 states. [2020-12-17 14:32:19,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-17 14:32:19,815 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:32:19,815 INFO L504 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:32:20,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-12-17 14:32:20,029 INFO L429 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:32:20,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:32:20,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1353837581, now seen corresponding path program 50 times [2020-12-17 14:32:20,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:32:20,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430896838] [2020-12-17 14:32:20,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:32:20,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:32:20,290 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:20,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430896838] [2020-12-17 14:32:20,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547602737] [2020-12-17 14:32:20,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:20,384 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 14:32:20,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:32:20,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-17 14:32:20,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:32:20,421 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:32:20,451 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:32:20,466 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:20,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:32:20,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 18 [2020-12-17 14:32:20,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723010147] [2020-12-17 14:32:20,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-17 14:32:20,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:32:20,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-17 14:32:20,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-12-17 14:32:20,468 INFO L87 Difference]: Start difference. First operand 10532 states. Second operand has 18 states, 18 states have (on average 4.666666666666667) internal successors, (84), 18 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:21,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:32:21,651 INFO L93 Difference]: Finished difference Result 10465 states and 23521 transitions. [2020-12-17 14:32:21,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-12-17 14:32:21,652 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.666666666666667) internal successors, (84), 18 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2020-12-17 14:32:21,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:32:21,666 INFO L225 Difference]: With dead ends: 10465 [2020-12-17 14:32:21,666 INFO L226 Difference]: Without dead ends: 9780 [2020-12-17 14:32:21,667 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=554, Invalid=1608, Unknown=0, NotChecked=0, Total=2162 [2020-12-17 14:32:21,667 INFO L78 Accepts]: Start accepts. Automaton has 9780 states. Word has length 81 [2020-12-17 14:32:21,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:32:21,667 INFO L481 AbstractCegarLoop]: Abstraction has 9780 states. [2020-12-17 14:32:21,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.666666666666667) internal successors, (84), 18 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:21,668 INFO L276 IsEmpty]: Start isEmpty. Operand 9780 states. [2020-12-17 14:32:21,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-17 14:32:21,679 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:32:21,679 INFO L504 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:32:21,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2020-12-17 14:32:21,880 INFO L429 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:32:21,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:32:21,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1585971837, now seen corresponding path program 51 times [2020-12-17 14:32:21,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:32:21,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454167945] [2020-12-17 14:32:21,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:32:21,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:32:22,194 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:22,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454167945] [2020-12-17 14:32:22,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396685807] [2020-12-17 14:32:22,195 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:22,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-12-17 14:32:22,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:32:22,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-17 14:32:22,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:32:22,351 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:32:22,369 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:22,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:32:22,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2020-12-17 14:32:22,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122469165] [2020-12-17 14:32:22,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-17 14:32:22,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:32:22,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-17 14:32:22,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2020-12-17 14:32:22,371 INFO L87 Difference]: Start difference. First operand 9780 states. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:22,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:32:22,903 INFO L93 Difference]: Finished difference Result 10100 states and 22540 transitions. [2020-12-17 14:32:22,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-17 14:32:22,904 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2020-12-17 14:32:22,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:32:22,918 INFO L225 Difference]: With dead ends: 10100 [2020-12-17 14:32:22,918 INFO L226 Difference]: Without dead ends: 9830 [2020-12-17 14:32:22,918 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=282, Invalid=774, Unknown=0, NotChecked=0, Total=1056 [2020-12-17 14:32:22,918 INFO L78 Accepts]: Start accepts. Automaton has 9830 states. Word has length 86 [2020-12-17 14:32:22,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:32:22,919 INFO L481 AbstractCegarLoop]: Abstraction has 9830 states. [2020-12-17 14:32:22,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:22,919 INFO L276 IsEmpty]: Start isEmpty. Operand 9830 states. [2020-12-17 14:32:22,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-17 14:32:22,930 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:32:22,930 INFO L504 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:32:23,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-12-17 14:32:23,131 INFO L429 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:32:23,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:32:23,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1357101873, now seen corresponding path program 52 times [2020-12-17 14:32:23,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:32:23,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416315865] [2020-12-17 14:32:23,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:32:23,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:32:23,454 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:23,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416315865] [2020-12-17 14:32:23,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606053632] [2020-12-17 14:32:23,455 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:23,541 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 14:32:23,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:32:23,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-17 14:32:23,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:32:23,571 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:32:23,625 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:32:23,648 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:23,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:32:23,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-12-17 14:32:23,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345633769] [2020-12-17 14:32:23,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-17 14:32:23,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:32:23,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-17 14:32:23,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2020-12-17 14:32:23,651 INFO L87 Difference]: Start difference. First operand 9830 states. Second operand has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:24,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:32:24,550 INFO L93 Difference]: Finished difference Result 10150 states and 22640 transitions. [2020-12-17 14:32:24,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-17 14:32:24,550 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2020-12-17 14:32:24,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:32:24,560 INFO L225 Difference]: With dead ends: 10150 [2020-12-17 14:32:24,561 INFO L226 Difference]: Without dead ends: 9880 [2020-12-17 14:32:24,561 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=335, Invalid=997, Unknown=0, NotChecked=0, Total=1332 [2020-12-17 14:32:24,561 INFO L78 Accepts]: Start accepts. Automaton has 9880 states. Word has length 86 [2020-12-17 14:32:24,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:32:24,561 INFO L481 AbstractCegarLoop]: Abstraction has 9880 states. [2020-12-17 14:32:24,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:24,562 INFO L276 IsEmpty]: Start isEmpty. Operand 9880 states. [2020-12-17 14:32:24,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-17 14:32:24,570 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:32:24,570 INFO L504 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:32:24,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:24,772 INFO L429 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:32:24,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:32:24,772 INFO L82 PathProgramCache]: Analyzing trace with hash 139163241, now seen corresponding path program 53 times [2020-12-17 14:32:24,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:32:24,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245789547] [2020-12-17 14:32:24,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:32:24,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:32:25,058 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:25,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245789547] [2020-12-17 14:32:25,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195743814] [2020-12-17 14:32:25,059 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:25,147 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2020-12-17 14:32:25,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:32:25,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-17 14:32:25,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:32:25,215 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:32:25,233 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:25,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:32:25,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2020-12-17 14:32:25,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963869085] [2020-12-17 14:32:25,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-17 14:32:25,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:32:25,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-17 14:32:25,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-12-17 14:32:25,235 INFO L87 Difference]: Start difference. First operand 9880 states. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:25,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:32:25,874 INFO L93 Difference]: Finished difference Result 10200 states and 22740 transitions. [2020-12-17 14:32:25,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-17 14:32:25,875 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2020-12-17 14:32:25,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:32:25,889 INFO L225 Difference]: With dead ends: 10200 [2020-12-17 14:32:25,890 INFO L226 Difference]: Without dead ends: 9930 [2020-12-17 14:32:25,890 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=294, Invalid=896, Unknown=0, NotChecked=0, Total=1190 [2020-12-17 14:32:25,890 INFO L78 Accepts]: Start accepts. Automaton has 9930 states. Word has length 86 [2020-12-17 14:32:25,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:32:25,890 INFO L481 AbstractCegarLoop]: Abstraction has 9930 states. [2020-12-17 14:32:25,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:25,890 INFO L276 IsEmpty]: Start isEmpty. Operand 9930 states. [2020-12-17 14:32:25,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-17 14:32:25,901 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:32:25,901 INFO L504 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:32:26,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:26,102 INFO L429 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:32:26,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:32:26,103 INFO L82 PathProgramCache]: Analyzing trace with hash -454053575, now seen corresponding path program 54 times [2020-12-17 14:32:26,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:32:26,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457918873] [2020-12-17 14:32:26,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:32:26,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:32:26,437 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:26,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457918873] [2020-12-17 14:32:26,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89326167] [2020-12-17 14:32:26,438 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:26,545 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-12-17 14:32:26,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:32:26,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-17 14:32:26,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:32:26,593 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:32:26,636 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:32:26,649 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:26,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:32:26,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-12-17 14:32:26,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560052873] [2020-12-17 14:32:26,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-17 14:32:26,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:32:26,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-17 14:32:26,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2020-12-17 14:32:26,650 INFO L87 Difference]: Start difference. First operand 9930 states. Second operand has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:27,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:32:27,428 INFO L93 Difference]: Finished difference Result 10250 states and 22840 transitions. [2020-12-17 14:32:27,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-17 14:32:27,429 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2020-12-17 14:32:27,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:32:27,445 INFO L225 Difference]: With dead ends: 10250 [2020-12-17 14:32:27,445 INFO L226 Difference]: Without dead ends: 9980 [2020-12-17 14:32:27,445 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=355, Invalid=1127, Unknown=0, NotChecked=0, Total=1482 [2020-12-17 14:32:27,445 INFO L78 Accepts]: Start accepts. Automaton has 9980 states. Word has length 86 [2020-12-17 14:32:27,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:32:27,446 INFO L481 AbstractCegarLoop]: Abstraction has 9980 states. [2020-12-17 14:32:27,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:27,446 INFO L276 IsEmpty]: Start isEmpty. Operand 9980 states. [2020-12-17 14:32:27,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-17 14:32:27,459 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:32:27,459 INFO L504 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:32:27,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:27,674 INFO L429 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:32:27,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:32:27,674 INFO L82 PathProgramCache]: Analyzing trace with hash -626739353, now seen corresponding path program 55 times [2020-12-17 14:32:27,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:32:27,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72663825] [2020-12-17 14:32:27,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:32:27,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:32:27,970 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:27,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72663825] [2020-12-17 14:32:27,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159635510] [2020-12-17 14:32:27,971 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:28,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:32:28,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-17 14:32:28,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:32:28,120 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:32:28,137 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:28,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:32:28,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2020-12-17 14:32:28,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407396141] [2020-12-17 14:32:28,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-17 14:32:28,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:32:28,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-17 14:32:28,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2020-12-17 14:32:28,140 INFO L87 Difference]: Start difference. First operand 9980 states. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:28,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:32:28,866 INFO L93 Difference]: Finished difference Result 10300 states and 22940 transitions. [2020-12-17 14:32:28,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-17 14:32:28,867 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2020-12-17 14:32:28,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:32:28,880 INFO L225 Difference]: With dead ends: 10300 [2020-12-17 14:32:28,881 INFO L226 Difference]: Without dead ends: 10030 [2020-12-17 14:32:28,881 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=322, Invalid=1010, Unknown=0, NotChecked=0, Total=1332 [2020-12-17 14:32:28,881 INFO L78 Accepts]: Start accepts. Automaton has 10030 states. Word has length 86 [2020-12-17 14:32:28,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:32:28,881 INFO L481 AbstractCegarLoop]: Abstraction has 10030 states. [2020-12-17 14:32:28,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:28,882 INFO L276 IsEmpty]: Start isEmpty. Operand 10030 states. [2020-12-17 14:32:28,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-17 14:32:28,893 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:32:28,893 INFO L504 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:32:29,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2020-12-17 14:32:29,100 INFO L429 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:32:29,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:32:29,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1534932535, now seen corresponding path program 56 times [2020-12-17 14:32:29,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:32:29,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037399765] [2020-12-17 14:32:29,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:32:29,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:32:29,365 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:29,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037399765] [2020-12-17 14:32:29,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804450622] [2020-12-17 14:32:29,366 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:29,451 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 14:32:29,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:32:29,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-17 14:32:29,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:32:29,480 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:32:29,530 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:32:29,546 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:29,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:32:29,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-12-17 14:32:29,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756760172] [2020-12-17 14:32:29,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-17 14:32:29,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:32:29,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-17 14:32:29,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2020-12-17 14:32:29,549 INFO L87 Difference]: Start difference. First operand 10030 states. Second operand has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:30,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:32:30,696 INFO L93 Difference]: Finished difference Result 10350 states and 23040 transitions. [2020-12-17 14:32:30,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-12-17 14:32:30,696 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2020-12-17 14:32:30,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:32:30,712 INFO L225 Difference]: With dead ends: 10350 [2020-12-17 14:32:30,712 INFO L226 Difference]: Without dead ends: 10080 [2020-12-17 14:32:30,713 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=391, Invalid=1249, Unknown=0, NotChecked=0, Total=1640 [2020-12-17 14:32:30,713 INFO L78 Accepts]: Start accepts. Automaton has 10080 states. Word has length 86 [2020-12-17 14:32:30,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:32:30,713 INFO L481 AbstractCegarLoop]: Abstraction has 10080 states. [2020-12-17 14:32:30,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:30,713 INFO L276 IsEmpty]: Start isEmpty. Operand 10080 states. [2020-12-17 14:32:30,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-17 14:32:30,728 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:32:30,728 INFO L504 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:32:30,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:30,943 INFO L429 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:32:30,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:32:30,943 INFO L82 PathProgramCache]: Analyzing trace with hash -869433883, now seen corresponding path program 57 times [2020-12-17 14:32:30,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:32:30,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823908576] [2020-12-17 14:32:30,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:32:30,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:32:31,200 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:31,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823908576] [2020-12-17 14:32:31,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237585752] [2020-12-17 14:32:31,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:31,286 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-12-17 14:32:31,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:32:31,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-17 14:32:31,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:32:31,343 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:32:31,353 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:31,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:32:31,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2020-12-17 14:32:31,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976721664] [2020-12-17 14:32:31,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-17 14:32:31,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:32:31,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-17 14:32:31,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2020-12-17 14:32:31,356 INFO L87 Difference]: Start difference. First operand 10080 states. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:32,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:32:32,118 INFO L93 Difference]: Finished difference Result 10400 states and 23140 transitions. [2020-12-17 14:32:32,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-12-17 14:32:32,118 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2020-12-17 14:32:32,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:32:32,131 INFO L225 Difference]: With dead ends: 10400 [2020-12-17 14:32:32,132 INFO L226 Difference]: Without dead ends: 10130 [2020-12-17 14:32:32,132 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=366, Invalid=1116, Unknown=0, NotChecked=0, Total=1482 [2020-12-17 14:32:32,132 INFO L78 Accepts]: Start accepts. Automaton has 10130 states. Word has length 86 [2020-12-17 14:32:32,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:32:32,133 INFO L481 AbstractCegarLoop]: Abstraction has 10130 states. [2020-12-17 14:32:32,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:32,133 INFO L276 IsEmpty]: Start isEmpty. Operand 10130 states. [2020-12-17 14:32:32,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-17 14:32:32,142 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:32:32,142 INFO L504 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:32:32,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2020-12-17 14:32:32,344 INFO L429 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:32:32,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:32:32,344 INFO L82 PathProgramCache]: Analyzing trace with hash 352272565, now seen corresponding path program 58 times [2020-12-17 14:32:32,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:32:32,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608777406] [2020-12-17 14:32:32,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:32:32,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:32:32,616 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:32,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608777406] [2020-12-17 14:32:32,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659643992] [2020-12-17 14:32:32,616 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:32,700 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 14:32:32,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:32:32,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-17 14:32:32,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:32:32,732 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:32:32,776 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:32:32,790 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:32,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:32:32,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-12-17 14:32:32,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109546268] [2020-12-17 14:32:32,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-17 14:32:32,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:32:32,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-17 14:32:32,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2020-12-17 14:32:32,794 INFO L87 Difference]: Start difference. First operand 10130 states. Second operand has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:33,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:32:33,836 INFO L93 Difference]: Finished difference Result 10450 states and 23240 transitions. [2020-12-17 14:32:33,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-12-17 14:32:33,837 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2020-12-17 14:32:33,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:32:33,856 INFO L225 Difference]: With dead ends: 10450 [2020-12-17 14:32:33,857 INFO L226 Difference]: Without dead ends: 10180 [2020-12-17 14:32:33,857 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=443, Invalid=1363, Unknown=0, NotChecked=0, Total=1806 [2020-12-17 14:32:33,858 INFO L78 Accepts]: Start accepts. Automaton has 10180 states. Word has length 86 [2020-12-17 14:32:33,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:32:33,858 INFO L481 AbstractCegarLoop]: Abstraction has 10180 states. [2020-12-17 14:32:33,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:33,858 INFO L276 IsEmpty]: Start isEmpty. Operand 10180 states. [2020-12-17 14:32:33,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-17 14:32:33,876 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:32:33,876 INFO L504 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:32:34,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:34,084 INFO L429 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:32:34,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:32:34,084 INFO L82 PathProgramCache]: Analyzing trace with hash -737760797, now seen corresponding path program 59 times [2020-12-17 14:32:34,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:32:34,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239681886] [2020-12-17 14:32:34,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:32:34,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:32:34,351 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:34,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239681886] [2020-12-17 14:32:34,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223352357] [2020-12-17 14:32:34,352 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:34,443 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2020-12-17 14:32:34,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:32:34,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-17 14:32:34,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:32:34,495 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:32:34,508 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:34,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:32:34,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2020-12-17 14:32:34,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434634762] [2020-12-17 14:32:34,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-17 14:32:34,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:32:34,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-17 14:32:34,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-12-17 14:32:34,510 INFO L87 Difference]: Start difference. First operand 10180 states. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:35,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:32:35,342 INFO L93 Difference]: Finished difference Result 10500 states and 23340 transitions. [2020-12-17 14:32:35,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-12-17 14:32:35,342 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2020-12-17 14:32:35,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:32:35,354 INFO L225 Difference]: With dead ends: 10500 [2020-12-17 14:32:35,354 INFO L226 Difference]: Without dead ends: 10230 [2020-12-17 14:32:35,355 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=426, Invalid=1214, Unknown=0, NotChecked=0, Total=1640 [2020-12-17 14:32:35,355 INFO L78 Accepts]: Start accepts. Automaton has 10230 states. Word has length 86 [2020-12-17 14:32:35,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:32:35,355 INFO L481 AbstractCegarLoop]: Abstraction has 10230 states. [2020-12-17 14:32:35,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:35,355 INFO L276 IsEmpty]: Start isEmpty. Operand 10230 states. [2020-12-17 14:32:35,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-17 14:32:35,365 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:32:35,365 INFO L504 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:32:35,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2020-12-17 14:32:35,581 INFO L429 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:32:35,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:32:35,581 INFO L82 PathProgramCache]: Analyzing trace with hash 181842099, now seen corresponding path program 60 times [2020-12-17 14:32:35,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:32:35,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667983978] [2020-12-17 14:32:35,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:32:35,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:32:35,851 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:35,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667983978] [2020-12-17 14:32:35,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601358748] [2020-12-17 14:32:35,852 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:36,123 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-12-17 14:32:36,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:32:36,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-17 14:32:36,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:32:36,166 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:32:36,211 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:32:36,228 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:36,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:32:36,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-12-17 14:32:36,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086079188] [2020-12-17 14:32:36,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-17 14:32:36,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:32:36,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-17 14:32:36,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2020-12-17 14:32:36,231 INFO L87 Difference]: Start difference. First operand 10230 states. Second operand has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:37,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:32:37,564 INFO L93 Difference]: Finished difference Result 10934 states and 24464 transitions. [2020-12-17 14:32:37,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-12-17 14:32:37,565 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2020-12-17 14:32:37,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:32:37,580 INFO L225 Difference]: With dead ends: 10934 [2020-12-17 14:32:37,580 INFO L226 Difference]: Without dead ends: 10350 [2020-12-17 14:32:37,580 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=534, Invalid=1628, Unknown=0, NotChecked=0, Total=2162 [2020-12-17 14:32:37,580 INFO L78 Accepts]: Start accepts. Automaton has 10350 states. Word has length 86 [2020-12-17 14:32:37,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:32:37,580 INFO L481 AbstractCegarLoop]: Abstraction has 10350 states. [2020-12-17 14:32:37,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:37,581 INFO L276 IsEmpty]: Start isEmpty. Operand 10350 states. [2020-12-17 14:32:37,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-17 14:32:37,592 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:32:37,592 INFO L504 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:32:37,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:37,793 INFO L429 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:32:37,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:32:37,794 INFO L82 PathProgramCache]: Analyzing trace with hash 533918017, now seen corresponding path program 61 times [2020-12-17 14:32:37,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:32:37,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988146795] [2020-12-17 14:32:37,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:32:37,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:32:38,036 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:38,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988146795] [2020-12-17 14:32:38,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404111020] [2020-12-17 14:32:38,037 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:38,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:32:38,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-17 14:32:38,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:32:38,176 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:32:38,188 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:38,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:32:38,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2020-12-17 14:32:38,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551627093] [2020-12-17 14:32:38,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-17 14:32:38,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:32:38,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-17 14:32:38,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2020-12-17 14:32:38,190 INFO L87 Difference]: Start difference. First operand 10350 states. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:39,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:32:39,197 INFO L93 Difference]: Finished difference Result 11822 states and 26994 transitions. [2020-12-17 14:32:39,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-17 14:32:39,198 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2020-12-17 14:32:39,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:32:39,214 INFO L225 Difference]: With dead ends: 11822 [2020-12-17 14:32:39,214 INFO L226 Difference]: Without dead ends: 11537 [2020-12-17 14:32:39,215 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=503, Invalid=1303, Unknown=0, NotChecked=0, Total=1806 [2020-12-17 14:32:39,215 INFO L78 Accepts]: Start accepts. Automaton has 11537 states. Word has length 86 [2020-12-17 14:32:39,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:32:39,215 INFO L481 AbstractCegarLoop]: Abstraction has 11537 states. [2020-12-17 14:32:39,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:39,216 INFO L276 IsEmpty]: Start isEmpty. Operand 11537 states. [2020-12-17 14:32:39,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-17 14:32:39,227 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:32:39,227 INFO L504 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:32:39,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2020-12-17 14:32:39,428 INFO L429 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:32:39,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:32:39,429 INFO L82 PathProgramCache]: Analyzing trace with hash 530944787, now seen corresponding path program 62 times [2020-12-17 14:32:39,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:32:39,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780391776] [2020-12-17 14:32:39,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:32:39,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:32:39,695 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:39,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780391776] [2020-12-17 14:32:39,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044236756] [2020-12-17 14:32:39,696 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:39,781 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 14:32:39,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:32:39,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-17 14:32:39,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:32:39,816 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:32:39,853 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:32:39,866 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:39,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:32:39,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-12-17 14:32:39,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705669478] [2020-12-17 14:32:39,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-17 14:32:39,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:32:39,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-17 14:32:39,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2020-12-17 14:32:39,868 INFO L87 Difference]: Start difference. First operand 11537 states. Second operand has 19 states, 19 states have (on average 4.684210526315789) internal successors, (89), 19 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:41,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:32:41,239 INFO L93 Difference]: Finished difference Result 11345 states and 25431 transitions. [2020-12-17 14:32:41,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-12-17 14:32:41,240 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.684210526315789) internal successors, (89), 19 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2020-12-17 14:32:41,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:32:41,255 INFO L225 Difference]: With dead ends: 11345 [2020-12-17 14:32:41,255 INFO L226 Difference]: Without dead ends: 10660 [2020-12-17 14:32:41,255 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=633, Invalid=1817, Unknown=0, NotChecked=0, Total=2450 [2020-12-17 14:32:41,255 INFO L78 Accepts]: Start accepts. Automaton has 10660 states. Word has length 86 [2020-12-17 14:32:41,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:32:41,256 INFO L481 AbstractCegarLoop]: Abstraction has 10660 states. [2020-12-17 14:32:41,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.684210526315789) internal successors, (89), 19 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:41,257 INFO L276 IsEmpty]: Start isEmpty. Operand 10660 states. [2020-12-17 14:32:41,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-17 14:32:41,268 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:32:41,269 INFO L504 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:32:41,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable70 [2020-12-17 14:32:41,469 INFO L429 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:32:41,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:32:41,470 INFO L82 PathProgramCache]: Analyzing trace with hash -800382706, now seen corresponding path program 63 times [2020-12-17 14:32:41,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:32:41,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337570675] [2020-12-17 14:32:41,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:32:41,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:32:41,785 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:41,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337570675] [2020-12-17 14:32:41,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938581498] [2020-12-17 14:32:41,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:42,030 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-12-17 14:32:42,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:32:42,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-17 14:32:42,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:32:42,089 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:32:42,110 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:42,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:32:42,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2020-12-17 14:32:42,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826957516] [2020-12-17 14:32:42,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-17 14:32:42,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:32:42,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-17 14:32:42,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2020-12-17 14:32:42,112 INFO L87 Difference]: Start difference. First operand 10660 states. Second operand has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:42,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:32:42,664 INFO L93 Difference]: Finished difference Result 10980 states and 24450 transitions. [2020-12-17 14:32:42,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-17 14:32:42,671 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2020-12-17 14:32:42,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:32:42,684 INFO L225 Difference]: With dead ends: 10980 [2020-12-17 14:32:42,684 INFO L226 Difference]: Without dead ends: 10710 [2020-12-17 14:32:42,684 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=320, Invalid=802, Unknown=0, NotChecked=0, Total=1122 [2020-12-17 14:32:42,684 INFO L78 Accepts]: Start accepts. Automaton has 10710 states. Word has length 91 [2020-12-17 14:32:42,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:32:42,685 INFO L481 AbstractCegarLoop]: Abstraction has 10710 states. [2020-12-17 14:32:42,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:42,685 INFO L276 IsEmpty]: Start isEmpty. Operand 10710 states. [2020-12-17 14:32:42,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-17 14:32:42,703 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:32:42,703 INFO L504 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:32:42,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:42,909 INFO L429 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:32:42,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:32:42,910 INFO L82 PathProgramCache]: Analyzing trace with hash 523642080, now seen corresponding path program 64 times [2020-12-17 14:32:42,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:32:42,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263791442] [2020-12-17 14:32:42,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:32:42,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:32:43,340 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:43,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263791442] [2020-12-17 14:32:43,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42843958] [2020-12-17 14:32:43,341 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:43,439 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 14:32:43,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:32:43,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-17 14:32:43,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:32:43,472 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:32:43,525 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:32:43,546 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:43,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:32:43,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2020-12-17 14:32:43,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890647515] [2020-12-17 14:32:43,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-17 14:32:43,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:32:43,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-17 14:32:43,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2020-12-17 14:32:43,549 INFO L87 Difference]: Start difference. First operand 10710 states. Second operand has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:44,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:32:44,287 INFO L93 Difference]: Finished difference Result 11030 states and 24550 transitions. [2020-12-17 14:32:44,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-17 14:32:44,287 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2020-12-17 14:32:44,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:32:44,303 INFO L225 Difference]: With dead ends: 11030 [2020-12-17 14:32:44,303 INFO L226 Difference]: Without dead ends: 10760 [2020-12-17 14:32:44,304 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=342, Invalid=990, Unknown=0, NotChecked=0, Total=1332 [2020-12-17 14:32:44,304 INFO L78 Accepts]: Start accepts. Automaton has 10760 states. Word has length 91 [2020-12-17 14:32:44,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:32:44,304 INFO L481 AbstractCegarLoop]: Abstraction has 10760 states. [2020-12-17 14:32:44,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:44,304 INFO L276 IsEmpty]: Start isEmpty. Operand 10760 states. [2020-12-17 14:32:44,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-17 14:32:44,319 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:32:44,319 INFO L504 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:32:44,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:44,520 INFO L429 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:32:44,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:32:44,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1634704890, now seen corresponding path program 65 times [2020-12-17 14:32:44,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:32:44,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313136506] [2020-12-17 14:32:44,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:32:44,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:32:44,880 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:44,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313136506] [2020-12-17 14:32:44,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020501532] [2020-12-17 14:32:44,880 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:44,971 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2020-12-17 14:32:44,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:32:44,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-17 14:32:44,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:32:45,018 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:32:45,032 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:45,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:32:45,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2020-12-17 14:32:45,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223818403] [2020-12-17 14:32:45,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-17 14:32:45,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:32:45,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-17 14:32:45,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2020-12-17 14:32:45,033 INFO L87 Difference]: Start difference. First operand 10760 states. Second operand has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:45,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:32:45,701 INFO L93 Difference]: Finished difference Result 11080 states and 24650 transitions. [2020-12-17 14:32:45,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-17 14:32:45,702 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2020-12-17 14:32:45,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:32:45,715 INFO L225 Difference]: With dead ends: 11080 [2020-12-17 14:32:45,715 INFO L226 Difference]: Without dead ends: 10810 [2020-12-17 14:32:45,715 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=334, Invalid=998, Unknown=0, NotChecked=0, Total=1332 [2020-12-17 14:32:45,716 INFO L78 Accepts]: Start accepts. Automaton has 10810 states. Word has length 91 [2020-12-17 14:32:45,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:32:45,716 INFO L481 AbstractCegarLoop]: Abstraction has 10810 states. [2020-12-17 14:32:45,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:45,716 INFO L276 IsEmpty]: Start isEmpty. Operand 10810 states. [2020-12-17 14:32:45,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-17 14:32:45,727 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:32:45,727 INFO L504 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:32:45,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2020-12-17 14:32:45,928 INFO L429 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:32:45,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:32:45,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1956342582, now seen corresponding path program 66 times [2020-12-17 14:32:45,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:32:45,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495513672] [2020-12-17 14:32:45,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:32:45,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:32:46,266 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:46,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495513672] [2020-12-17 14:32:46,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866537556] [2020-12-17 14:32:46,267 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:46,358 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-12-17 14:32:46,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:32:46,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-17 14:32:46,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:32:46,391 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:32:46,438 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:32:46,453 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:46,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:32:46,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2020-12-17 14:32:46,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854160671] [2020-12-17 14:32:46,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-17 14:32:46,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:32:46,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-17 14:32:46,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2020-12-17 14:32:46,455 INFO L87 Difference]: Start difference. First operand 10810 states. Second operand has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:47,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:32:47,247 INFO L93 Difference]: Finished difference Result 11180 states and 24850 transitions. [2020-12-17 14:32:47,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-17 14:32:47,248 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2020-12-17 14:32:47,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:32:47,262 INFO L225 Difference]: With dead ends: 11180 [2020-12-17 14:32:47,263 INFO L226 Difference]: Without dead ends: 10910 [2020-12-17 14:32:47,263 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=380, Invalid=1180, Unknown=0, NotChecked=0, Total=1560 [2020-12-17 14:32:47,263 INFO L78 Accepts]: Start accepts. Automaton has 10910 states. Word has length 91 [2020-12-17 14:32:47,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:32:47,263 INFO L481 AbstractCegarLoop]: Abstraction has 10910 states. [2020-12-17 14:32:47,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:47,264 INFO L276 IsEmpty]: Start isEmpty. Operand 10910 states. [2020-12-17 14:32:47,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-17 14:32:47,274 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:32:47,274 INFO L504 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:32:47,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:47,475 INFO L429 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:32:47,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:32:47,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1071498888, now seen corresponding path program 67 times [2020-12-17 14:32:47,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:32:47,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543485088] [2020-12-17 14:32:47,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:32:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:32:47,936 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:47,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543485088] [2020-12-17 14:32:47,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122356700] [2020-12-17 14:32:47,937 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:48,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:32:48,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-17 14:32:48,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:32:48,082 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:32:48,101 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:48,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:32:48,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2020-12-17 14:32:48,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404325716] [2020-12-17 14:32:48,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-17 14:32:48,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:32:48,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-17 14:32:48,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2020-12-17 14:32:48,103 INFO L87 Difference]: Start difference. First operand 10910 states. Second operand has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:48,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:32:48,853 INFO L93 Difference]: Finished difference Result 11230 states and 24950 transitions. [2020-12-17 14:32:48,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-12-17 14:32:48,854 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2020-12-17 14:32:48,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:32:48,868 INFO L225 Difference]: With dead ends: 11230 [2020-12-17 14:32:48,868 INFO L226 Difference]: Without dead ends: 10960 [2020-12-17 14:32:48,868 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=384, Invalid=1176, Unknown=0, NotChecked=0, Total=1560 [2020-12-17 14:32:48,868 INFO L78 Accepts]: Start accepts. Automaton has 10960 states. Word has length 91 [2020-12-17 14:32:48,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:32:48,869 INFO L481 AbstractCegarLoop]: Abstraction has 10960 states. [2020-12-17 14:32:48,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:48,869 INFO L276 IsEmpty]: Start isEmpty. Operand 10960 states. [2020-12-17 14:32:48,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-17 14:32:48,879 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:32:48,880 INFO L504 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:32:49,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2020-12-17 14:32:49,080 INFO L429 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:32:49,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:32:49,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1664715704, now seen corresponding path program 68 times [2020-12-17 14:32:49,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:32:49,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946816322] [2020-12-17 14:32:49,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:32:49,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:32:49,413 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:49,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946816322] [2020-12-17 14:32:49,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328053249] [2020-12-17 14:32:49,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:49,500 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 14:32:49,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:32:49,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-17 14:32:49,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:32:49,533 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:32:49,586 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:32:49,598 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:49,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:32:49,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2020-12-17 14:32:49,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124078939] [2020-12-17 14:32:49,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-17 14:32:49,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:32:49,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-17 14:32:49,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2020-12-17 14:32:49,601 INFO L87 Difference]: Start difference. First operand 10960 states. Second operand has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:50,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:32:50,535 INFO L93 Difference]: Finished difference Result 11280 states and 25050 transitions. [2020-12-17 14:32:50,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-12-17 14:32:50,536 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2020-12-17 14:32:50,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:32:50,548 INFO L225 Difference]: With dead ends: 11280 [2020-12-17 14:32:50,548 INFO L226 Difference]: Without dead ends: 11010 [2020-12-17 14:32:50,548 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=407, Invalid=1315, Unknown=0, NotChecked=0, Total=1722 [2020-12-17 14:32:50,548 INFO L78 Accepts]: Start accepts. Automaton has 11010 states. Word has length 91 [2020-12-17 14:32:50,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:32:50,549 INFO L481 AbstractCegarLoop]: Abstraction has 11010 states. [2020-12-17 14:32:50,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:50,549 INFO L276 IsEmpty]: Start isEmpty. Operand 11010 states. [2020-12-17 14:32:50,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-17 14:32:50,559 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:32:50,559 INFO L504 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:32:50,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:50,760 INFO L429 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:32:50,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:32:50,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1837401482, now seen corresponding path program 69 times [2020-12-17 14:32:50,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:32:50,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924566050] [2020-12-17 14:32:50,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:32:50,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:32:51,050 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:51,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924566050] [2020-12-17 14:32:51,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696198961] [2020-12-17 14:32:51,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:51,140 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-12-17 14:32:51,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:32:51,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-17 14:32:51,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:32:51,192 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:32:51,208 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:51,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:32:51,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2020-12-17 14:32:51,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983140320] [2020-12-17 14:32:51,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-17 14:32:51,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:32:51,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-17 14:32:51,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-12-17 14:32:51,211 INFO L87 Difference]: Start difference. First operand 11010 states. Second operand has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:52,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:32:52,119 INFO L93 Difference]: Finished difference Result 11330 states and 25150 transitions. [2020-12-17 14:32:52,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-12-17 14:32:52,120 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2020-12-17 14:32:52,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:32:52,136 INFO L225 Difference]: With dead ends: 11330 [2020-12-17 14:32:52,136 INFO L226 Difference]: Without dead ends: 11060 [2020-12-17 14:32:52,137 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=425, Invalid=1297, Unknown=0, NotChecked=0, Total=1722 [2020-12-17 14:32:52,137 INFO L78 Accepts]: Start accepts. Automaton has 11060 states. Word has length 91 [2020-12-17 14:32:52,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:32:52,138 INFO L481 AbstractCegarLoop]: Abstraction has 11060 states. [2020-12-17 14:32:52,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:52,138 INFO L276 IsEmpty]: Start isEmpty. Operand 11060 states. [2020-12-17 14:32:52,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-17 14:32:52,150 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:32:52,150 INFO L504 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:32:52,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2020-12-17 14:32:52,351 INFO L429 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:32:52,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:32:52,352 INFO L82 PathProgramCache]: Analyzing trace with hash 324270406, now seen corresponding path program 70 times [2020-12-17 14:32:52,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:32:52,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185527997] [2020-12-17 14:32:52,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:32:52,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:32:52,663 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:52,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185527997] [2020-12-17 14:32:52,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078700971] [2020-12-17 14:32:52,663 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:52,756 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 14:32:52,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:32:52,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-17 14:32:52,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:32:52,800 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:32:52,847 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:32:53,004 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:53,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:32:53,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2020-12-17 14:32:53,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118111208] [2020-12-17 14:32:53,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-17 14:32:53,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:32:53,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-17 14:32:53,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2020-12-17 14:32:53,006 INFO L87 Difference]: Start difference. First operand 11060 states. Second operand has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:53,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:32:53,997 INFO L93 Difference]: Finished difference Result 11380 states and 25250 transitions. [2020-12-17 14:32:53,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-12-17 14:32:53,998 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2020-12-17 14:32:53,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:32:54,012 INFO L225 Difference]: With dead ends: 11380 [2020-12-17 14:32:54,013 INFO L226 Difference]: Without dead ends: 11110 [2020-12-17 14:32:54,013 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=450, Invalid=1442, Unknown=0, NotChecked=0, Total=1892 [2020-12-17 14:32:54,013 INFO L78 Accepts]: Start accepts. Automaton has 11110 states. Word has length 91 [2020-12-17 14:32:54,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:32:54,013 INFO L481 AbstractCegarLoop]: Abstraction has 11110 states. [2020-12-17 14:32:54,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:54,013 INFO L276 IsEmpty]: Start isEmpty. Operand 11110 states. [2020-12-17 14:32:54,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-17 14:32:54,024 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:32:54,024 INFO L504 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:32:54,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:54,225 INFO L429 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:32:54,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:32:54,225 INFO L82 PathProgramCache]: Analyzing trace with hash -2080096012, now seen corresponding path program 71 times [2020-12-17 14:32:54,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:32:54,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490361015] [2020-12-17 14:32:54,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:32:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:32:54,536 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:54,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490361015] [2020-12-17 14:32:54,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934389787] [2020-12-17 14:32:54,537 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:54,626 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2020-12-17 14:32:54,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:32:54,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-17 14:32:54,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:32:54,686 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:32:54,697 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:54,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:32:54,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2020-12-17 14:32:54,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090185175] [2020-12-17 14:32:54,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-17 14:32:54,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:32:54,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-17 14:32:54,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-12-17 14:32:54,699 INFO L87 Difference]: Start difference. First operand 11110 states. Second operand has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:55,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:32:55,634 INFO L93 Difference]: Finished difference Result 11430 states and 25350 transitions. [2020-12-17 14:32:55,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-17 14:32:55,635 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2020-12-17 14:32:55,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:32:55,650 INFO L225 Difference]: With dead ends: 11430 [2020-12-17 14:32:55,650 INFO L226 Difference]: Without dead ends: 11160 [2020-12-17 14:32:55,650 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=482, Invalid=1410, Unknown=0, NotChecked=0, Total=1892 [2020-12-17 14:32:55,651 INFO L78 Accepts]: Start accepts. Automaton has 11160 states. Word has length 91 [2020-12-17 14:32:55,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:32:55,651 INFO L481 AbstractCegarLoop]: Abstraction has 11160 states. [2020-12-17 14:32:55,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:55,651 INFO L276 IsEmpty]: Start isEmpty. Operand 11160 states. [2020-12-17 14:32:55,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-17 14:32:55,664 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:32:55,664 INFO L504 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:32:55,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2020-12-17 14:32:55,865 INFO L429 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:32:55,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:32:55,866 INFO L82 PathProgramCache]: Analyzing trace with hash -858389564, now seen corresponding path program 72 times [2020-12-17 14:32:55,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:32:55,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087218561] [2020-12-17 14:32:55,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:32:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:32:56,156 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:56,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087218561] [2020-12-17 14:32:56,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876659629] [2020-12-17 14:32:56,157 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:56,247 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-12-17 14:32:56,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:32:56,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-17 14:32:56,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:32:56,283 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:32:56,342 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:32:56,361 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:56,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:32:56,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2020-12-17 14:32:56,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509188309] [2020-12-17 14:32:56,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-17 14:32:56,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:32:56,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-17 14:32:56,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2020-12-17 14:32:56,363 INFO L87 Difference]: Start difference. First operand 11160 states. Second operand has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:57,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:32:57,639 INFO L93 Difference]: Finished difference Result 11480 states and 25450 transitions. [2020-12-17 14:32:57,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-12-17 14:32:57,640 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2020-12-17 14:32:57,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:32:57,656 INFO L225 Difference]: With dead ends: 11480 [2020-12-17 14:32:57,657 INFO L226 Difference]: Without dead ends: 11210 [2020-12-17 14:32:57,657 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=509, Invalid=1561, Unknown=0, NotChecked=0, Total=2070 [2020-12-17 14:32:57,657 INFO L78 Accepts]: Start accepts. Automaton has 11210 states. Word has length 91 [2020-12-17 14:32:57,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:32:57,657 INFO L481 AbstractCegarLoop]: Abstraction has 11210 states. [2020-12-17 14:32:57,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:57,658 INFO L276 IsEmpty]: Start isEmpty. Operand 11210 states. [2020-12-17 14:32:57,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-17 14:32:57,673 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:32:57,673 INFO L504 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:32:57,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:57,884 INFO L429 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:32:57,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:32:57,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1948422926, now seen corresponding path program 73 times [2020-12-17 14:32:57,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:32:57,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589718328] [2020-12-17 14:32:57,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:32:57,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:32:58,168 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:58,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589718328] [2020-12-17 14:32:58,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319001729] [2020-12-17 14:32:58,169 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:58,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:32:58,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-17 14:32:58,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:32:58,324 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:32:58,339 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:32:58,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:32:58,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2020-12-17 14:32:58,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108323188] [2020-12-17 14:32:58,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-17 14:32:58,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:32:58,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-17 14:32:58,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2020-12-17 14:32:58,341 INFO L87 Difference]: Start difference. First operand 11210 states. Second operand has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:59,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:32:59,575 INFO L93 Difference]: Finished difference Result 11530 states and 25550 transitions. [2020-12-17 14:32:59,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-17 14:32:59,576 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2020-12-17 14:32:59,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:32:59,592 INFO L225 Difference]: With dead ends: 11530 [2020-12-17 14:32:59,592 INFO L226 Difference]: Without dead ends: 11260 [2020-12-17 14:32:59,592 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=555, Invalid=1515, Unknown=0, NotChecked=0, Total=2070 [2020-12-17 14:32:59,592 INFO L78 Accepts]: Start accepts. Automaton has 11260 states. Word has length 91 [2020-12-17 14:32:59,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:32:59,593 INFO L481 AbstractCegarLoop]: Abstraction has 11260 states. [2020-12-17 14:32:59,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:32:59,593 INFO L276 IsEmpty]: Start isEmpty. Operand 11260 states. [2020-12-17 14:32:59,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-17 14:32:59,603 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:32:59,603 INFO L504 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:32:59,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:32:59,806 INFO L429 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:32:59,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:32:59,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1028820030, now seen corresponding path program 74 times [2020-12-17 14:32:59,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:32:59,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481392585] [2020-12-17 14:32:59,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:32:59,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:33:00,094 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:00,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481392585] [2020-12-17 14:33:00,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933082086] [2020-12-17 14:33:00,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:00,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 14:33:00,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:33:00,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-17 14:33:00,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:33:00,216 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:33:00,262 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:33:00,272 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:00,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:33:00,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 20 [2020-12-17 14:33:00,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044469506] [2020-12-17 14:33:00,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-17 14:33:00,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:33:00,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-17 14:33:00,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2020-12-17 14:33:00,274 INFO L87 Difference]: Start difference. First operand 11260 states. Second operand has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:01,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:33:01,709 INFO L93 Difference]: Finished difference Result 11964 states and 26674 transitions. [2020-12-17 14:33:01,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-12-17 14:33:01,710 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2020-12-17 14:33:01,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:33:01,724 INFO L225 Difference]: With dead ends: 11964 [2020-12-17 14:33:01,724 INFO L226 Difference]: Without dead ends: 11380 [2020-12-17 14:33:01,724 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=607, Invalid=1843, Unknown=0, NotChecked=0, Total=2450 [2020-12-17 14:33:01,724 INFO L78 Accepts]: Start accepts. Automaton has 11380 states. Word has length 91 [2020-12-17 14:33:01,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:33:01,724 INFO L481 AbstractCegarLoop]: Abstraction has 11380 states. [2020-12-17 14:33:01,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:01,725 INFO L276 IsEmpty]: Start isEmpty. Operand 11380 states. [2020-12-17 14:33:01,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-17 14:33:01,735 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:33:01,735 INFO L504 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:33:01,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,78 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:01,936 INFO L429 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:33:01,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:33:01,937 INFO L82 PathProgramCache]: Analyzing trace with hash -676744112, now seen corresponding path program 75 times [2020-12-17 14:33:01,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:33:01,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529889344] [2020-12-17 14:33:01,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:33:01,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:33:02,207 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:02,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529889344] [2020-12-17 14:33:02,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055112616] [2020-12-17 14:33:02,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:02,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-12-17 14:33:02,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:33:02,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-17 14:33:02,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:33:02,351 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:33:02,360 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:02,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:33:02,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2020-12-17 14:33:02,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200379527] [2020-12-17 14:33:02,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-17 14:33:02,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:33:02,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-17 14:33:02,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2020-12-17 14:33:02,362 INFO L87 Difference]: Start difference. First operand 11380 states. Second operand has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:03,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:33:03,462 INFO L93 Difference]: Finished difference Result 12852 states and 29204 transitions. [2020-12-17 14:33:03,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-12-17 14:33:03,463 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2020-12-17 14:33:03,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:33:03,481 INFO L225 Difference]: With dead ends: 12852 [2020-12-17 14:33:03,481 INFO L226 Difference]: Without dead ends: 12567 [2020-12-17 14:33:03,482 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=645, Invalid=1611, Unknown=0, NotChecked=0, Total=2256 [2020-12-17 14:33:03,482 INFO L78 Accepts]: Start accepts. Automaton has 12567 states. Word has length 91 [2020-12-17 14:33:03,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:33:03,482 INFO L481 AbstractCegarLoop]: Abstraction has 12567 states. [2020-12-17 14:33:03,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:03,482 INFO L276 IsEmpty]: Start isEmpty. Operand 12567 states. [2020-12-17 14:33:03,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-17 14:33:03,495 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:33:03,495 INFO L504 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:33:03,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:03,696 INFO L429 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:33:03,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:33:03,697 INFO L82 PathProgramCache]: Analyzing trace with hash -679717342, now seen corresponding path program 76 times [2020-12-17 14:33:03,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:33:03,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658520108] [2020-12-17 14:33:03,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:33:03,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:33:03,986 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:03,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658520108] [2020-12-17 14:33:03,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521705303] [2020-12-17 14:33:03,987 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:04,077 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 14:33:04,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:33:04,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-17 14:33:04,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:33:04,113 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:33:04,134 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:33:04,147 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:04,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:33:04,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2020-12-17 14:33:04,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003882026] [2020-12-17 14:33:04,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-17 14:33:04,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:33:04,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-17 14:33:04,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2020-12-17 14:33:04,149 INFO L87 Difference]: Start difference. First operand 12567 states. Second operand has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:05,103 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2020-12-17 14:33:05,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:33:05,723 INFO L93 Difference]: Finished difference Result 12119 states and 27001 transitions. [2020-12-17 14:33:05,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-12-17 14:33:05,724 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2020-12-17 14:33:05,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:33:05,742 INFO L225 Difference]: With dead ends: 12119 [2020-12-17 14:33:05,742 INFO L226 Difference]: Without dead ends: 11550 [2020-12-17 14:33:05,743 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 604 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=658, Invalid=1694, Unknown=0, NotChecked=0, Total=2352 [2020-12-17 14:33:05,743 INFO L78 Accepts]: Start accepts. Automaton has 11550 states. Word has length 91 [2020-12-17 14:33:05,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:33:05,743 INFO L481 AbstractCegarLoop]: Abstraction has 11550 states. [2020-12-17 14:33:05,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:05,744 INFO L276 IsEmpty]: Start isEmpty. Operand 11550 states. [2020-12-17 14:33:05,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-17 14:33:05,761 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:33:05,761 INFO L504 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:33:05,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:05,962 INFO L429 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:33:05,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:33:05,963 INFO L82 PathProgramCache]: Analyzing trace with hash 287717422, now seen corresponding path program 77 times [2020-12-17 14:33:05,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:33:05,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123161559] [2020-12-17 14:33:05,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:33:05,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:33:06,410 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:06,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123161559] [2020-12-17 14:33:06,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886169451] [2020-12-17 14:33:06,411 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:06,534 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2020-12-17 14:33:06,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:33:06,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-17 14:33:06,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:33:06,572 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:33:06,608 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:06,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:33:06,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-12-17 14:33:06,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622711025] [2020-12-17 14:33:06,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-17 14:33:06,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:33:06,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-17 14:33:06,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2020-12-17 14:33:06,613 INFO L87 Difference]: Start difference. First operand 11550 states. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:07,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:33:07,352 INFO L93 Difference]: Finished difference Result 11870 states and 26350 transitions. [2020-12-17 14:33:07,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-17 14:33:07,353 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-12-17 14:33:07,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:33:07,371 INFO L225 Difference]: With dead ends: 11870 [2020-12-17 14:33:07,371 INFO L226 Difference]: Without dead ends: 11600 [2020-12-17 14:33:07,372 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=334, Invalid=926, Unknown=0, NotChecked=0, Total=1260 [2020-12-17 14:33:07,372 INFO L78 Accepts]: Start accepts. Automaton has 11600 states. Word has length 96 [2020-12-17 14:33:07,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:33:07,372 INFO L481 AbstractCegarLoop]: Abstraction has 11600 states. [2020-12-17 14:33:07,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:07,372 INFO L276 IsEmpty]: Start isEmpty. Operand 11600 states. [2020-12-17 14:33:07,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-17 14:33:07,390 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:33:07,390 INFO L504 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:33:07,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:07,591 INFO L429 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:33:07,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:33:07,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1611742208, now seen corresponding path program 78 times [2020-12-17 14:33:07,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:33:07,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926248854] [2020-12-17 14:33:07,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:33:07,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:33:08,030 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:08,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926248854] [2020-12-17 14:33:08,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23302542] [2020-12-17 14:33:08,031 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:08,126 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2020-12-17 14:33:08,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:33:08,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-17 14:33:08,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:33:08,160 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:33:08,178 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:33:08,193 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:08,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:33:08,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2020-12-17 14:33:08,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349154341] [2020-12-17 14:33:08,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-17 14:33:08,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:33:08,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-17 14:33:08,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2020-12-17 14:33:08,195 INFO L87 Difference]: Start difference. First operand 11600 states. Second operand has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:09,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:33:09,017 INFO L93 Difference]: Finished difference Result 11920 states and 26450 transitions. [2020-12-17 14:33:09,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-17 14:33:09,022 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-12-17 14:33:09,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:33:09,041 INFO L225 Difference]: With dead ends: 11920 [2020-12-17 14:33:09,042 INFO L226 Difference]: Without dead ends: 11650 [2020-12-17 14:33:09,042 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=389, Invalid=1171, Unknown=0, NotChecked=0, Total=1560 [2020-12-17 14:33:09,042 INFO L78 Accepts]: Start accepts. Automaton has 11650 states. Word has length 96 [2020-12-17 14:33:09,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:33:09,043 INFO L481 AbstractCegarLoop]: Abstraction has 11650 states. [2020-12-17 14:33:09,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:09,043 INFO L276 IsEmpty]: Start isEmpty. Operand 11650 states. [2020-12-17 14:33:09,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-17 14:33:09,057 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:33:09,057 INFO L504 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:33:09,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:09,258 INFO L429 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:33:09,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:33:09,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1572162278, now seen corresponding path program 79 times [2020-12-17 14:33:09,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:33:09,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752145270] [2020-12-17 14:33:09,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:33:09,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:33:09,622 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:09,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752145270] [2020-12-17 14:33:09,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374185157] [2020-12-17 14:33:09,623 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:09,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:33:09,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-17 14:33:09,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:33:09,740 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:33:09,765 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:09,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:33:09,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-12-17 14:33:09,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525016549] [2020-12-17 14:33:09,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-17 14:33:09,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:33:09,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-17 14:33:09,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2020-12-17 14:33:09,769 INFO L87 Difference]: Start difference. First operand 11650 states. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:10,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:33:10,522 INFO L93 Difference]: Finished difference Result 11970 states and 26550 transitions. [2020-12-17 14:33:10,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-17 14:33:10,524 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-12-17 14:33:10,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:33:10,538 INFO L225 Difference]: With dead ends: 11970 [2020-12-17 14:33:10,539 INFO L226 Difference]: Without dead ends: 11700 [2020-12-17 14:33:10,539 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=345, Invalid=1061, Unknown=0, NotChecked=0, Total=1406 [2020-12-17 14:33:10,539 INFO L78 Accepts]: Start accepts. Automaton has 11700 states. Word has length 96 [2020-12-17 14:33:10,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:33:10,540 INFO L481 AbstractCegarLoop]: Abstraction has 11700 states. [2020-12-17 14:33:10,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:10,540 INFO L276 IsEmpty]: Start isEmpty. Operand 11700 states. [2020-12-17 14:33:10,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-17 14:33:10,551 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:33:10,551 INFO L504 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:33:10,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2020-12-17 14:33:10,752 INFO L429 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:33:10,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:33:10,753 INFO L82 PathProgramCache]: Analyzing trace with hash -868242454, now seen corresponding path program 80 times [2020-12-17 14:33:10,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:33:10,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60389145] [2020-12-17 14:33:10,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:33:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:33:11,312 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:11,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60389145] [2020-12-17 14:33:11,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143649900] [2020-12-17 14:33:11,312 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:11,400 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 14:33:11,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:33:11,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-17 14:33:11,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:33:11,438 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:33:11,457 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:33:11,472 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:11,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:33:11,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2020-12-17 14:33:11,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609942852] [2020-12-17 14:33:11,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-17 14:33:11,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:33:11,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-17 14:33:11,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2020-12-17 14:33:11,474 INFO L87 Difference]: Start difference. First operand 11700 states. Second operand has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:12,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:33:12,412 INFO L93 Difference]: Finished difference Result 12020 states and 26650 transitions. [2020-12-17 14:33:12,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-12-17 14:33:12,413 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-12-17 14:33:12,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:33:12,427 INFO L225 Difference]: With dead ends: 12020 [2020-12-17 14:33:12,427 INFO L226 Difference]: Without dead ends: 11750 [2020-12-17 14:33:12,428 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=408, Invalid=1314, Unknown=0, NotChecked=0, Total=1722 [2020-12-17 14:33:12,428 INFO L78 Accepts]: Start accepts. Automaton has 11750 states. Word has length 96 [2020-12-17 14:33:12,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:33:12,428 INFO L481 AbstractCegarLoop]: Abstraction has 11750 states. [2020-12-17 14:33:12,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:12,428 INFO L276 IsEmpty]: Start isEmpty. Operand 11750 states. [2020-12-17 14:33:12,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-17 14:33:12,440 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:33:12,440 INFO L504 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:33:12,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:12,641 INFO L429 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:33:12,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:33:12,642 INFO L82 PathProgramCache]: Analyzing trace with hash 16601240, now seen corresponding path program 81 times [2020-12-17 14:33:12,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:33:12,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501220974] [2020-12-17 14:33:12,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:33:12,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:33:12,986 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:12,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501220974] [2020-12-17 14:33:12,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759397969] [2020-12-17 14:33:12,987 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:13,104 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2020-12-17 14:33:13,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:33:13,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-17 14:33:13,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:33:13,144 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:33:13,169 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:13,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:33:13,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-12-17 14:33:13,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363191271] [2020-12-17 14:33:13,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-17 14:33:13,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:33:13,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-17 14:33:13,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2020-12-17 14:33:13,172 INFO L87 Difference]: Start difference. First operand 11750 states. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:14,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:33:14,022 INFO L93 Difference]: Finished difference Result 12070 states and 26750 transitions. [2020-12-17 14:33:14,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-12-17 14:33:14,023 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-12-17 14:33:14,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:33:14,037 INFO L225 Difference]: With dead ends: 12070 [2020-12-17 14:33:14,037 INFO L226 Difference]: Without dead ends: 11800 [2020-12-17 14:33:14,037 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=372, Invalid=1188, Unknown=0, NotChecked=0, Total=1560 [2020-12-17 14:33:14,038 INFO L78 Accepts]: Start accepts. Automaton has 11800 states. Word has length 96 [2020-12-17 14:33:14,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:33:14,038 INFO L481 AbstractCegarLoop]: Abstraction has 11800 states. [2020-12-17 14:33:14,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:14,038 INFO L276 IsEmpty]: Start isEmpty. Operand 11800 states. [2020-12-17 14:33:14,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-17 14:33:14,049 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:33:14,049 INFO L504 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:33:14,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2020-12-17 14:33:14,250 INFO L429 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:33:14,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:33:14,250 INFO L82 PathProgramCache]: Analyzing trace with hash -576615576, now seen corresponding path program 82 times [2020-12-17 14:33:14,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:33:14,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11962809] [2020-12-17 14:33:14,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:33:14,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:33:14,594 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:14,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11962809] [2020-12-17 14:33:14,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17521184] [2020-12-17 14:33:14,594 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:14,682 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 14:33:14,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:33:14,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-17 14:33:14,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:33:14,712 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:33:14,732 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:33:14,756 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:14,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:33:14,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2020-12-17 14:33:14,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536211795] [2020-12-17 14:33:14,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-17 14:33:14,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:33:14,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-17 14:33:14,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2020-12-17 14:33:14,758 INFO L87 Difference]: Start difference. First operand 11800 states. Second operand has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:15,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:33:15,861 INFO L93 Difference]: Finished difference Result 12120 states and 26850 transitions. [2020-12-17 14:33:15,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-12-17 14:33:15,862 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-12-17 14:33:15,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:33:15,877 INFO L225 Difference]: With dead ends: 12120 [2020-12-17 14:33:15,877 INFO L226 Difference]: Without dead ends: 11850 [2020-12-17 14:33:15,878 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=443, Invalid=1449, Unknown=0, NotChecked=0, Total=1892 [2020-12-17 14:33:15,878 INFO L78 Accepts]: Start accepts. Automaton has 11850 states. Word has length 96 [2020-12-17 14:33:15,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:33:15,878 INFO L481 AbstractCegarLoop]: Abstraction has 11850 states. [2020-12-17 14:33:15,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:15,878 INFO L276 IsEmpty]: Start isEmpty. Operand 11850 states. [2020-12-17 14:33:15,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-17 14:33:15,889 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:33:15,889 INFO L504 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:33:16,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:16,090 INFO L429 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:33:16,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:33:16,091 INFO L82 PathProgramCache]: Analyzing trace with hash -749301354, now seen corresponding path program 83 times [2020-12-17 14:33:16,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:33:16,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833339022] [2020-12-17 14:33:16,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:33:16,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:33:16,575 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:16,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833339022] [2020-12-17 14:33:16,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828165689] [2020-12-17 14:33:16,576 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:16,666 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2020-12-17 14:33:16,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:33:16,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-17 14:33:16,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:33:16,699 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:33:16,720 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:16,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:33:16,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-12-17 14:33:16,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774344661] [2020-12-17 14:33:16,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-17 14:33:16,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:33:16,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-17 14:33:16,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2020-12-17 14:33:16,722 INFO L87 Difference]: Start difference. First operand 11850 states. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:17,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:33:17,703 INFO L93 Difference]: Finished difference Result 12170 states and 26950 transitions. [2020-12-17 14:33:17,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-12-17 14:33:17,705 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-12-17 14:33:17,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:33:17,722 INFO L225 Difference]: With dead ends: 12170 [2020-12-17 14:33:17,722 INFO L226 Difference]: Without dead ends: 11900 [2020-12-17 14:33:17,723 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=415, Invalid=1307, Unknown=0, NotChecked=0, Total=1722 [2020-12-17 14:33:17,723 INFO L78 Accepts]: Start accepts. Automaton has 11900 states. Word has length 96 [2020-12-17 14:33:17,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:33:17,723 INFO L481 AbstractCegarLoop]: Abstraction has 11900 states. [2020-12-17 14:33:17,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:17,724 INFO L276 IsEmpty]: Start isEmpty. Operand 11900 states. [2020-12-17 14:33:17,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-17 14:33:17,736 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:33:17,736 INFO L504 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:33:17,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,87 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:17,938 INFO L429 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:33:17,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:33:17,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1412370534, now seen corresponding path program 84 times [2020-12-17 14:33:17,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:33:17,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95428187] [2020-12-17 14:33:17,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:33:17,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:33:18,272 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:18,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95428187] [2020-12-17 14:33:18,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271272265] [2020-12-17 14:33:18,273 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:18,367 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2020-12-17 14:33:18,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:33:18,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-17 14:33:18,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:33:18,403 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:33:18,423 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:33:18,436 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:18,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:33:18,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2020-12-17 14:33:18,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100526410] [2020-12-17 14:33:18,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-17 14:33:18,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:33:18,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-17 14:33:18,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2020-12-17 14:33:18,438 INFO L87 Difference]: Start difference. First operand 11900 states. Second operand has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:19,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:33:19,615 INFO L93 Difference]: Finished difference Result 12220 states and 27050 transitions. [2020-12-17 14:33:19,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-12-17 14:33:19,616 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-12-17 14:33:19,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:33:19,630 INFO L225 Difference]: With dead ends: 12220 [2020-12-17 14:33:19,631 INFO L226 Difference]: Without dead ends: 11950 [2020-12-17 14:33:19,631 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=494, Invalid=1576, Unknown=0, NotChecked=0, Total=2070 [2020-12-17 14:33:19,631 INFO L78 Accepts]: Start accepts. Automaton has 11950 states. Word has length 96 [2020-12-17 14:33:19,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:33:19,631 INFO L481 AbstractCegarLoop]: Abstraction has 11950 states. [2020-12-17 14:33:19,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:19,632 INFO L276 IsEmpty]: Start isEmpty. Operand 11950 states. [2020-12-17 14:33:19,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-17 14:33:19,642 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:33:19,643 INFO L504 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:33:19,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,88 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:19,843 INFO L429 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:33:19,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:33:19,844 INFO L82 PathProgramCache]: Analyzing trace with hash -991995884, now seen corresponding path program 85 times [2020-12-17 14:33:19,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:33:19,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638222978] [2020-12-17 14:33:19,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:33:19,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:33:20,179 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:20,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638222978] [2020-12-17 14:33:20,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019497327] [2020-12-17 14:33:20,180 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:20,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:33:20,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-17 14:33:20,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:33:20,296 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:33:20,308 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:20,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:33:20,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-12-17 14:33:20,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383180981] [2020-12-17 14:33:20,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-17 14:33:20,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:33:20,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-17 14:33:20,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2020-12-17 14:33:20,310 INFO L87 Difference]: Start difference. First operand 11950 states. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:21,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:33:21,318 INFO L93 Difference]: Finished difference Result 12270 states and 27150 transitions. [2020-12-17 14:33:21,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-17 14:33:21,319 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-12-17 14:33:21,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:33:21,334 INFO L225 Difference]: With dead ends: 12270 [2020-12-17 14:33:21,334 INFO L226 Difference]: Without dead ends: 12000 [2020-12-17 14:33:21,334 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=474, Invalid=1418, Unknown=0, NotChecked=0, Total=1892 [2020-12-17 14:33:21,335 INFO L78 Accepts]: Start accepts. Automaton has 12000 states. Word has length 96 [2020-12-17 14:33:21,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:33:21,335 INFO L481 AbstractCegarLoop]: Abstraction has 12000 states. [2020-12-17 14:33:21,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:21,335 INFO L276 IsEmpty]: Start isEmpty. Operand 12000 states. [2020-12-17 14:33:21,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-17 14:33:21,347 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:33:21,347 INFO L504 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:33:21,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:21,548 INFO L429 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:33:21,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:33:21,549 INFO L82 PathProgramCache]: Analyzing trace with hash 229710564, now seen corresponding path program 86 times [2020-12-17 14:33:21,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:33:21,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429702741] [2020-12-17 14:33:21,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:33:21,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:33:21,872 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:21,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429702741] [2020-12-17 14:33:21,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002579676] [2020-12-17 14:33:21,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:22,163 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 14:33:22,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:33:22,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-17 14:33:22,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:33:22,204 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:33:22,225 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:33:22,238 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:22,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:33:22,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2020-12-17 14:33:22,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667099404] [2020-12-17 14:33:22,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-17 14:33:22,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:33:22,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-17 14:33:22,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2020-12-17 14:33:22,240 INFO L87 Difference]: Start difference. First operand 12000 states. Second operand has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:23,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:33:23,637 INFO L93 Difference]: Finished difference Result 12320 states and 27250 transitions. [2020-12-17 14:33:23,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-12-17 14:33:23,638 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-12-17 14:33:23,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:33:23,651 INFO L225 Difference]: With dead ends: 12320 [2020-12-17 14:33:23,652 INFO L226 Difference]: Without dead ends: 12050 [2020-12-17 14:33:23,652 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=561, Invalid=1695, Unknown=0, NotChecked=0, Total=2256 [2020-12-17 14:33:23,653 INFO L78 Accepts]: Start accepts. Automaton has 12050 states. Word has length 96 [2020-12-17 14:33:23,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:33:23,653 INFO L481 AbstractCegarLoop]: Abstraction has 12050 states. [2020-12-17 14:33:23,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:23,653 INFO L276 IsEmpty]: Start isEmpty. Operand 12050 states. [2020-12-17 14:33:23,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-17 14:33:23,664 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:33:23,664 INFO L504 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:33:23,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:23,865 INFO L429 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:33:23,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:33:23,866 INFO L82 PathProgramCache]: Analyzing trace with hash -860322798, now seen corresponding path program 87 times [2020-12-17 14:33:23,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:33:23,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441374186] [2020-12-17 14:33:23,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:33:23,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:33:24,167 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:24,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441374186] [2020-12-17 14:33:24,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394534280] [2020-12-17 14:33:24,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:24,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2020-12-17 14:33:24,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:33:24,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-17 14:33:24,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:33:24,294 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:33:24,309 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:24,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:33:24,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-12-17 14:33:24,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47454604] [2020-12-17 14:33:24,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-17 14:33:24,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:33:24,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-17 14:33:24,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2020-12-17 14:33:24,312 INFO L87 Difference]: Start difference. First operand 12050 states. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:25,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:33:25,456 INFO L93 Difference]: Finished difference Result 12370 states and 27350 transitions. [2020-12-17 14:33:25,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-17 14:33:25,457 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-12-17 14:33:25,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:33:25,472 INFO L225 Difference]: With dead ends: 12370 [2020-12-17 14:33:25,472 INFO L226 Difference]: Without dead ends: 12100 [2020-12-17 14:33:25,472 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=549, Invalid=1521, Unknown=0, NotChecked=0, Total=2070 [2020-12-17 14:33:25,475 INFO L78 Accepts]: Start accepts. Automaton has 12100 states. Word has length 96 [2020-12-17 14:33:25,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:33:25,475 INFO L481 AbstractCegarLoop]: Abstraction has 12100 states. [2020-12-17 14:33:25,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:25,476 INFO L276 IsEmpty]: Start isEmpty. Operand 12100 states. [2020-12-17 14:33:25,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-17 14:33:25,489 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:33:25,489 INFO L504 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:33:25,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:25,703 INFO L429 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:33:25,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:33:25,703 INFO L82 PathProgramCache]: Analyzing trace with hash 59280098, now seen corresponding path program 88 times [2020-12-17 14:33:25,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:33:25,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754163359] [2020-12-17 14:33:25,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:33:25,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:33:26,005 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:26,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754163359] [2020-12-17 14:33:26,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164012002] [2020-12-17 14:33:26,006 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:26,097 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 14:33:26,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:33:26,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-17 14:33:26,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:33:26,137 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:33:26,157 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:33:26,168 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:26,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:33:26,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2020-12-17 14:33:26,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171998601] [2020-12-17 14:33:26,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-17 14:33:26,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:33:26,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-17 14:33:26,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2020-12-17 14:33:26,170 INFO L87 Difference]: Start difference. First operand 12100 states. Second operand has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:27,582 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 10 [2020-12-17 14:33:27,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:33:27,907 INFO L93 Difference]: Finished difference Result 12804 states and 28474 transitions. [2020-12-17 14:33:27,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-12-17 14:33:27,907 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-12-17 14:33:27,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:33:27,920 INFO L225 Difference]: With dead ends: 12804 [2020-12-17 14:33:27,920 INFO L226 Difference]: Without dead ends: 12220 [2020-12-17 14:33:27,921 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=665, Invalid=1987, Unknown=0, NotChecked=0, Total=2652 [2020-12-17 14:33:27,921 INFO L78 Accepts]: Start accepts. Automaton has 12220 states. Word has length 96 [2020-12-17 14:33:27,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:33:27,921 INFO L481 AbstractCegarLoop]: Abstraction has 12220 states. [2020-12-17 14:33:27,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:27,921 INFO L276 IsEmpty]: Start isEmpty. Operand 12220 states. [2020-12-17 14:33:27,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-17 14:33:27,934 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:33:27,934 INFO L504 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:33:28,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2020-12-17 14:33:28,135 INFO L429 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:33:28,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:33:28,136 INFO L82 PathProgramCache]: Analyzing trace with hash 411356016, now seen corresponding path program 89 times [2020-12-17 14:33:28,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:33:28,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460905776] [2020-12-17 14:33:28,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:33:28,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:33:28,458 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:28,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460905776] [2020-12-17 14:33:28,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214780212] [2020-12-17 14:33:28,458 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:28,558 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2020-12-17 14:33:28,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:33:28,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-17 14:33:28,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:33:28,618 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:33:28,643 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:28,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:33:28,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-12-17 14:33:28,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116127633] [2020-12-17 14:33:28,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-17 14:33:28,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:33:28,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-17 14:33:28,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2020-12-17 14:33:28,647 INFO L87 Difference]: Start difference. First operand 12220 states. Second operand has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:30,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:33:30,029 INFO L93 Difference]: Finished difference Result 13692 states and 31004 transitions. [2020-12-17 14:33:30,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-12-17 14:33:30,030 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-12-17 14:33:30,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:33:30,048 INFO L225 Difference]: With dead ends: 13692 [2020-12-17 14:33:30,048 INFO L226 Difference]: Without dead ends: 13407 [2020-12-17 14:33:30,049 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=641, Invalid=1615, Unknown=0, NotChecked=0, Total=2256 [2020-12-17 14:33:30,049 INFO L78 Accepts]: Start accepts. Automaton has 13407 states. Word has length 96 [2020-12-17 14:33:30,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:33:30,049 INFO L481 AbstractCegarLoop]: Abstraction has 13407 states. [2020-12-17 14:33:30,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:30,049 INFO L276 IsEmpty]: Start isEmpty. Operand 13407 states. [2020-12-17 14:33:30,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-12-17 14:33:30,064 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:33:30,064 INFO L504 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:33:30,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:30,265 INFO L429 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:33:30,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:33:30,266 INFO L82 PathProgramCache]: Analyzing trace with hash 408382786, now seen corresponding path program 90 times [2020-12-17 14:33:30,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:33:30,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073588514] [2020-12-17 14:33:30,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:33:30,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:33:30,604 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:30,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073588514] [2020-12-17 14:33:30,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191637328] [2020-12-17 14:33:30,604 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:30,708 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2020-12-17 14:33:30,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:33:30,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-17 14:33:30,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:33:30,750 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:33:30,771 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:33:30,792 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:30,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:33:30,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2020-12-17 14:33:30,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828527509] [2020-12-17 14:33:30,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-17 14:33:30,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:33:30,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-17 14:33:30,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2020-12-17 14:33:30,794 INFO L87 Difference]: Start difference. First operand 13407 states. Second operand has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:32,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:33:32,414 INFO L93 Difference]: Finished difference Result 12959 states and 28801 transitions. [2020-12-17 14:33:32,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-12-17 14:33:32,415 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2020-12-17 14:33:32,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:33:32,430 INFO L225 Difference]: With dead ends: 12959 [2020-12-17 14:33:32,430 INFO L226 Difference]: Without dead ends: 12390 [2020-12-17 14:33:32,431 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=746, Invalid=1906, Unknown=0, NotChecked=0, Total=2652 [2020-12-17 14:33:32,431 INFO L78 Accepts]: Start accepts. Automaton has 12390 states. Word has length 96 [2020-12-17 14:33:32,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:33:32,431 INFO L481 AbstractCegarLoop]: Abstraction has 12390 states. [2020-12-17 14:33:32,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:32,431 INFO L276 IsEmpty]: Start isEmpty. Operand 12390 states. [2020-12-17 14:33:32,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-17 14:33:32,446 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:33:32,446 INFO L504 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:33:32,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2020-12-17 14:33:32,651 INFO L429 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:33:32,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:33:32,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1918560897, now seen corresponding path program 91 times [2020-12-17 14:33:32,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:33:32,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938217001] [2020-12-17 14:33:32,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:33:32,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:33:33,091 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:33,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938217001] [2020-12-17 14:33:33,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698232436] [2020-12-17 14:33:33,092 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:33:33,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-17 14:33:33,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:33:33,264 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:33:33,290 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:33,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:33:33,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2020-12-17 14:33:33,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505943048] [2020-12-17 14:33:33,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-12-17 14:33:33,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:33:33,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-12-17 14:33:33,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2020-12-17 14:33:33,292 INFO L87 Difference]: Start difference. First operand 12390 states. Second operand has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:33,856 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-12-17 14:33:34,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:33:34,281 INFO L93 Difference]: Finished difference Result 12710 states and 28150 transitions. [2020-12-17 14:33:34,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-17 14:33:34,283 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-12-17 14:33:34,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:33:34,303 INFO L225 Difference]: With dead ends: 12710 [2020-12-17 14:33:34,303 INFO L226 Difference]: Without dead ends: 12440 [2020-12-17 14:33:34,303 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=403, Invalid=1003, Unknown=0, NotChecked=0, Total=1406 [2020-12-17 14:33:34,303 INFO L78 Accepts]: Start accepts. Automaton has 12440 states. Word has length 101 [2020-12-17 14:33:34,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:33:34,304 INFO L481 AbstractCegarLoop]: Abstraction has 12440 states. [2020-12-17 14:33:34,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:34,304 INFO L276 IsEmpty]: Start isEmpty. Operand 12440 states. [2020-12-17 14:33:34,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-17 14:33:34,318 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:33:34,319 INFO L504 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:33:34,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:34,520 INFO L429 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:33:34,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:33:34,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1149434577, now seen corresponding path program 92 times [2020-12-17 14:33:34,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:33:34,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082330084] [2020-12-17 14:33:34,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:33:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:33:35,033 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:35,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082330084] [2020-12-17 14:33:35,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887795544] [2020-12-17 14:33:35,034 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:35,127 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 14:33:35,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:33:35,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-17 14:33:35,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:33:35,164 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:33:35,218 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:33:35,237 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:35,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:33:35,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2020-12-17 14:33:35,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946159818] [2020-12-17 14:33:35,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-17 14:33:35,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:33:35,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-17 14:33:35,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2020-12-17 14:33:35,239 INFO L87 Difference]: Start difference. First operand 12440 states. Second operand has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:36,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:33:36,167 INFO L93 Difference]: Finished difference Result 12760 states and 28250 transitions. [2020-12-17 14:33:36,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-17 14:33:36,168 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-12-17 14:33:36,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:33:36,189 INFO L225 Difference]: With dead ends: 12760 [2020-12-17 14:33:36,189 INFO L226 Difference]: Without dead ends: 12490 [2020-12-17 14:33:36,190 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=426, Invalid=1214, Unknown=0, NotChecked=0, Total=1640 [2020-12-17 14:33:36,190 INFO L78 Accepts]: Start accepts. Automaton has 12490 states. Word has length 101 [2020-12-17 14:33:36,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:33:36,190 INFO L481 AbstractCegarLoop]: Abstraction has 12490 states. [2020-12-17 14:33:36,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:36,190 INFO L276 IsEmpty]: Start isEmpty. Operand 12490 states. [2020-12-17 14:33:36,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-17 14:33:36,203 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:33:36,203 INFO L504 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:33:36,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2020-12-17 14:33:36,404 INFO L429 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:33:36,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:33:36,405 INFO L82 PathProgramCache]: Analyzing trace with hash 187915115, now seen corresponding path program 93 times [2020-12-17 14:33:36,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:33:36,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806874830] [2020-12-17 14:33:36,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:33:36,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:33:36,877 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:36,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806874830] [2020-12-17 14:33:36,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048100621] [2020-12-17 14:33:36,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:36,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2020-12-17 14:33:36,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:33:36,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-17 14:33:36,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:33:37,045 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:33:37,063 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:37,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:33:37,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2020-12-17 14:33:37,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211585108] [2020-12-17 14:33:37,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-12-17 14:33:37,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:33:37,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-12-17 14:33:37,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2020-12-17 14:33:37,065 INFO L87 Difference]: Start difference. First operand 12490 states. Second operand has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:37,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:33:37,986 INFO L93 Difference]: Finished difference Result 12810 states and 28350 transitions. [2020-12-17 14:33:37,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-17 14:33:37,988 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-12-17 14:33:37,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:33:38,009 INFO L225 Difference]: With dead ends: 12810 [2020-12-17 14:33:38,010 INFO L226 Difference]: Without dead ends: 12540 [2020-12-17 14:33:38,010 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=416, Invalid=1224, Unknown=0, NotChecked=0, Total=1640 [2020-12-17 14:33:38,011 INFO L78 Accepts]: Start accepts. Automaton has 12540 states. Word has length 101 [2020-12-17 14:33:38,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:33:38,011 INFO L481 AbstractCegarLoop]: Abstraction has 12540 states. [2020-12-17 14:33:38,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:38,011 INFO L276 IsEmpty]: Start isEmpty. Operand 12540 states. [2020-12-17 14:33:38,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-17 14:33:38,029 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:33:38,029 INFO L504 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:33:38,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2020-12-17 14:33:38,230 INFO L429 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:33:38,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:33:38,231 INFO L82 PathProgramCache]: Analyzing trace with hash 297668155, now seen corresponding path program 94 times [2020-12-17 14:33:38,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:33:38,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408152176] [2020-12-17 14:33:38,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:33:38,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:33:38,882 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2020-12-17 14:33:38,897 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:38,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408152176] [2020-12-17 14:33:38,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758183610] [2020-12-17 14:33:38,898 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:38,989 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 14:33:38,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:33:38,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-17 14:33:38,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:33:39,041 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:33:39,103 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:33:39,120 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:39,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:33:39,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2020-12-17 14:33:39,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222145011] [2020-12-17 14:33:39,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-17 14:33:39,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:33:39,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-17 14:33:39,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2020-12-17 14:33:39,123 INFO L87 Difference]: Start difference. First operand 12540 states. Second operand has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:40,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:33:40,186 INFO L93 Difference]: Finished difference Result 12910 states and 28550 transitions. [2020-12-17 14:33:40,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-12-17 14:33:40,187 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-12-17 14:33:40,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:33:40,207 INFO L225 Difference]: With dead ends: 12910 [2020-12-17 14:33:40,207 INFO L226 Difference]: Without dead ends: 12640 [2020-12-17 14:33:40,207 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=465, Invalid=1427, Unknown=0, NotChecked=0, Total=1892 [2020-12-17 14:33:40,208 INFO L78 Accepts]: Start accepts. Automaton has 12640 states. Word has length 101 [2020-12-17 14:33:40,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:33:40,208 INFO L481 AbstractCegarLoop]: Abstraction has 12640 states. [2020-12-17 14:33:40,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:40,208 INFO L276 IsEmpty]: Start isEmpty. Operand 12640 states. [2020-12-17 14:33:40,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-17 14:33:40,224 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:33:40,224 INFO L504 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:33:40,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2020-12-17 14:33:40,427 INFO L429 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:33:40,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:33:40,427 INFO L82 PathProgramCache]: Analyzing trace with hash -198168215, now seen corresponding path program 95 times [2020-12-17 14:33:40,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:33:40,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720954879] [2020-12-17 14:33:40,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:33:40,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:33:40,864 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:40,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720954879] [2020-12-17 14:33:40,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593701623] [2020-12-17 14:33:40,865 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:40,959 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2020-12-17 14:33:40,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:33:40,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-17 14:33:40,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:33:41,007 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:33:41,023 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:41,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:33:41,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2020-12-17 14:33:41,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844909602] [2020-12-17 14:33:41,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-12-17 14:33:41,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:33:41,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-12-17 14:33:41,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2020-12-17 14:33:41,025 INFO L87 Difference]: Start difference. First operand 12640 states. Second operand has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:42,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:33:42,056 INFO L93 Difference]: Finished difference Result 12960 states and 28650 transitions. [2020-12-17 14:33:42,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-12-17 14:33:42,057 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-12-17 14:33:42,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:33:42,080 INFO L225 Difference]: With dead ends: 12960 [2020-12-17 14:33:42,080 INFO L226 Difference]: Without dead ends: 12690 [2020-12-17 14:33:42,081 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=467, Invalid=1425, Unknown=0, NotChecked=0, Total=1892 [2020-12-17 14:33:42,081 INFO L78 Accepts]: Start accepts. Automaton has 12690 states. Word has length 101 [2020-12-17 14:33:42,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:33:42,082 INFO L481 AbstractCegarLoop]: Abstraction has 12690 states. [2020-12-17 14:33:42,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:42,082 INFO L276 IsEmpty]: Start isEmpty. Operand 12690 states. [2020-12-17 14:33:42,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-17 14:33:42,098 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:33:42,098 INFO L504 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:33:42,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:42,299 INFO L429 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:33:42,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:33:42,299 INFO L82 PathProgramCache]: Analyzing trace with hash 505751609, now seen corresponding path program 96 times [2020-12-17 14:33:42,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:33:42,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85522927] [2020-12-17 14:33:42,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:33:42,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:33:42,766 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:42,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85522927] [2020-12-17 14:33:42,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154483926] [2020-12-17 14:33:42,766 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:42,868 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2020-12-17 14:33:42,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:33:42,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-17 14:33:42,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:33:42,903 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:33:42,959 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:33:42,977 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:42,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:33:42,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2020-12-17 14:33:42,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706383053] [2020-12-17 14:33:42,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-17 14:33:42,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:33:42,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-17 14:33:42,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2020-12-17 14:33:42,979 INFO L87 Difference]: Start difference. First operand 12690 states. Second operand has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:44,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:33:44,357 INFO L93 Difference]: Finished difference Result 13010 states and 28750 transitions. [2020-12-17 14:33:44,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-12-17 14:33:44,359 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-12-17 14:33:44,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:33:44,380 INFO L225 Difference]: With dead ends: 13010 [2020-12-17 14:33:44,381 INFO L226 Difference]: Without dead ends: 12740 [2020-12-17 14:33:44,381 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=490, Invalid=1580, Unknown=0, NotChecked=0, Total=2070 [2020-12-17 14:33:44,381 INFO L78 Accepts]: Start accepts. Automaton has 12740 states. Word has length 101 [2020-12-17 14:33:44,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:33:44,382 INFO L481 AbstractCegarLoop]: Abstraction has 12740 states. [2020-12-17 14:33:44,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:44,382 INFO L276 IsEmpty]: Start isEmpty. Operand 12740 states. [2020-12-17 14:33:44,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-17 14:33:44,398 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:33:44,398 INFO L504 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:33:44,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2020-12-17 14:33:44,599 INFO L429 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:33:44,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:33:44,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1390595303, now seen corresponding path program 97 times [2020-12-17 14:33:44,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:33:44,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178907823] [2020-12-17 14:33:44,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:33:44,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:33:45,017 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:45,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178907823] [2020-12-17 14:33:45,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767092891] [2020-12-17 14:33:45,017 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:33:45,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-17 14:33:45,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:33:45,192 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:33:45,222 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:45,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:33:45,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2020-12-17 14:33:45,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588935690] [2020-12-17 14:33:45,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-12-17 14:33:45,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:33:45,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-12-17 14:33:45,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2020-12-17 14:33:45,226 INFO L87 Difference]: Start difference. First operand 12740 states. Second operand has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:46,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:33:46,374 INFO L93 Difference]: Finished difference Result 13060 states and 28850 transitions. [2020-12-17 14:33:46,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-17 14:33:46,376 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-12-17 14:33:46,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:33:46,396 INFO L225 Difference]: With dead ends: 13060 [2020-12-17 14:33:46,396 INFO L226 Difference]: Without dead ends: 12790 [2020-12-17 14:33:46,397 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=506, Invalid=1564, Unknown=0, NotChecked=0, Total=2070 [2020-12-17 14:33:46,397 INFO L78 Accepts]: Start accepts. Automaton has 12790 states. Word has length 101 [2020-12-17 14:33:46,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:33:46,397 INFO L481 AbstractCegarLoop]: Abstraction has 12790 states. [2020-12-17 14:33:46,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:46,398 INFO L276 IsEmpty]: Start isEmpty. Operand 12790 states. [2020-12-17 14:33:46,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-17 14:33:46,410 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:33:46,411 INFO L504 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:33:46,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,101 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:46,623 INFO L429 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:33:46,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:33:46,624 INFO L82 PathProgramCache]: Analyzing trace with hash 797378487, now seen corresponding path program 98 times [2020-12-17 14:33:46,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:33:46,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868782269] [2020-12-17 14:33:46,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:33:46,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:33:47,114 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:47,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868782269] [2020-12-17 14:33:47,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540594640] [2020-12-17 14:33:47,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:47,208 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 14:33:47,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:33:47,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-17 14:33:47,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:33:47,249 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:33:47,310 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:33:47,325 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:47,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:33:47,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2020-12-17 14:33:47,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035313851] [2020-12-17 14:33:47,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-17 14:33:47,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:33:47,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-17 14:33:47,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2020-12-17 14:33:47,327 INFO L87 Difference]: Start difference. First operand 12790 states. Second operand has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:48,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:33:48,700 INFO L93 Difference]: Finished difference Result 13110 states and 28950 transitions. [2020-12-17 14:33:48,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-12-17 14:33:48,701 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-12-17 14:33:48,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:33:48,721 INFO L225 Difference]: With dead ends: 13110 [2020-12-17 14:33:48,721 INFO L226 Difference]: Without dead ends: 12840 [2020-12-17 14:33:48,721 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=531, Invalid=1725, Unknown=0, NotChecked=0, Total=2256 [2020-12-17 14:33:48,721 INFO L78 Accepts]: Start accepts. Automaton has 12840 states. Word has length 101 [2020-12-17 14:33:48,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:33:48,722 INFO L481 AbstractCegarLoop]: Abstraction has 12840 states. [2020-12-17 14:33:48,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:48,722 INFO L276 IsEmpty]: Start isEmpty. Operand 12840 states. [2020-12-17 14:33:48,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-17 14:33:48,738 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:33:48,738 INFO L504 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:33:48,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2020-12-17 14:33:48,939 INFO L429 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:33:48,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:33:48,940 INFO L82 PathProgramCache]: Analyzing trace with hash 624692709, now seen corresponding path program 99 times [2020-12-17 14:33:48,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:33:48,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143057285] [2020-12-17 14:33:48,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:33:48,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:33:49,496 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:49,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143057285] [2020-12-17 14:33:49,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730879751] [2020-12-17 14:33:49,497 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:49,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2020-12-17 14:33:49,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:33:49,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-17 14:33:49,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:33:49,668 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:33:49,684 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:49,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:33:49,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2020-12-17 14:33:49,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557400832] [2020-12-17 14:33:49,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-12-17 14:33:49,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:33:49,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-12-17 14:33:49,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2020-12-17 14:33:49,686 INFO L87 Difference]: Start difference. First operand 12840 states. Second operand has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:50,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:33:50,938 INFO L93 Difference]: Finished difference Result 13160 states and 29050 transitions. [2020-12-17 14:33:50,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-17 14:33:50,940 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-12-17 14:33:50,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:33:50,961 INFO L225 Difference]: With dead ends: 13160 [2020-12-17 14:33:50,961 INFO L226 Difference]: Without dead ends: 12890 [2020-12-17 14:33:50,962 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=561, Invalid=1695, Unknown=0, NotChecked=0, Total=2256 [2020-12-17 14:33:50,962 INFO L78 Accepts]: Start accepts. Automaton has 12890 states. Word has length 101 [2020-12-17 14:33:50,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:33:50,962 INFO L481 AbstractCegarLoop]: Abstraction has 12890 states. [2020-12-17 14:33:50,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:50,962 INFO L276 IsEmpty]: Start isEmpty. Operand 12890 states. [2020-12-17 14:33:50,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-17 14:33:50,976 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:33:50,976 INFO L504 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:33:51,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:51,177 INFO L429 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:33:51,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:33:51,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1508602699, now seen corresponding path program 100 times [2020-12-17 14:33:51,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:33:51,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852355673] [2020-12-17 14:33:51,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:33:51,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:33:51,606 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:51,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852355673] [2020-12-17 14:33:51,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195377093] [2020-12-17 14:33:51,607 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:51,698 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 14:33:51,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:33:51,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-17 14:33:51,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:33:51,743 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:33:51,800 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:33:51,815 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:51,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:33:51,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2020-12-17 14:33:51,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491492914] [2020-12-17 14:33:51,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-17 14:33:51,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:33:51,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-17 14:33:51,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2020-12-17 14:33:51,818 INFO L87 Difference]: Start difference. First operand 12890 states. Second operand has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:53,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:33:53,394 INFO L93 Difference]: Finished difference Result 13210 states and 29150 transitions. [2020-12-17 14:33:53,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-12-17 14:33:53,395 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-12-17 14:33:53,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:33:53,418 INFO L225 Difference]: With dead ends: 13210 [2020-12-17 14:33:53,418 INFO L226 Difference]: Without dead ends: 12940 [2020-12-17 14:33:53,419 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=588, Invalid=1862, Unknown=0, NotChecked=0, Total=2450 [2020-12-17 14:33:53,419 INFO L78 Accepts]: Start accepts. Automaton has 12940 states. Word has length 101 [2020-12-17 14:33:53,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:33:53,419 INFO L481 AbstractCegarLoop]: Abstraction has 12940 states. [2020-12-17 14:33:53,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:53,419 INFO L276 IsEmpty]: Start isEmpty. Operand 12940 states. [2020-12-17 14:33:53,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-17 14:33:53,434 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:33:53,434 INFO L504 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:33:53,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,104 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:53,635 INFO L429 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:33:53,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:33:53,636 INFO L82 PathProgramCache]: Analyzing trace with hash 381998179, now seen corresponding path program 101 times [2020-12-17 14:33:53,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:33:53,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854314697] [2020-12-17 14:33:53,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:33:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:33:54,027 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:54,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854314697] [2020-12-17 14:33:54,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670914104] [2020-12-17 14:33:54,027 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:54,124 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2020-12-17 14:33:54,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:33:54,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-17 14:33:54,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:33:54,190 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:33:54,380 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:54,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:33:54,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2020-12-17 14:33:54,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194287205] [2020-12-17 14:33:54,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-12-17 14:33:54,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:33:54,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-12-17 14:33:54,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2020-12-17 14:33:54,383 INFO L87 Difference]: Start difference. First operand 12940 states. Second operand has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:55,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:33:55,826 INFO L93 Difference]: Finished difference Result 13260 states and 29250 transitions. [2020-12-17 14:33:55,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-12-17 14:33:55,828 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-12-17 14:33:55,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:33:55,849 INFO L225 Difference]: With dead ends: 13260 [2020-12-17 14:33:55,850 INFO L226 Difference]: Without dead ends: 12990 [2020-12-17 14:33:55,850 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 615 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=632, Invalid=1818, Unknown=0, NotChecked=0, Total=2450 [2020-12-17 14:33:55,850 INFO L78 Accepts]: Start accepts. Automaton has 12990 states. Word has length 101 [2020-12-17 14:33:55,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:33:55,851 INFO L481 AbstractCegarLoop]: Abstraction has 12990 states. [2020-12-17 14:33:55,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:55,851 INFO L276 IsEmpty]: Start isEmpty. Operand 12990 states. [2020-12-17 14:33:55,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-17 14:33:55,869 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:33:55,869 INFO L504 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:33:56,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable109 [2020-12-17 14:33:56,070 INFO L429 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:33:56,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:33:56,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1603704627, now seen corresponding path program 102 times [2020-12-17 14:33:56,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:33:56,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140415922] [2020-12-17 14:33:56,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:33:56,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:33:56,512 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:56,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140415922] [2020-12-17 14:33:56,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274865659] [2020-12-17 14:33:56,513 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:56,619 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2020-12-17 14:33:56,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:33:56,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-17 14:33:56,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:33:56,665 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:33:56,732 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:33:56,753 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:56,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:33:56,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2020-12-17 14:33:56,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266885904] [2020-12-17 14:33:56,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-17 14:33:56,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:33:56,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-17 14:33:56,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2020-12-17 14:33:56,755 INFO L87 Difference]: Start difference. First operand 12990 states. Second operand has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:58,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:33:58,573 INFO L93 Difference]: Finished difference Result 13310 states and 29350 transitions. [2020-12-17 14:33:58,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-12-17 14:33:58,575 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-12-17 14:33:58,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:33:58,597 INFO L225 Difference]: With dead ends: 13310 [2020-12-17 14:33:58,597 INFO L226 Difference]: Without dead ends: 13040 [2020-12-17 14:33:58,598 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=661, Invalid=1991, Unknown=0, NotChecked=0, Total=2652 [2020-12-17 14:33:58,598 INFO L78 Accepts]: Start accepts. Automaton has 13040 states. Word has length 101 [2020-12-17 14:33:58,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:33:58,599 INFO L481 AbstractCegarLoop]: Abstraction has 13040 states. [2020-12-17 14:33:58,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:33:58,599 INFO L276 IsEmpty]: Start isEmpty. Operand 13040 states. [2020-12-17 14:33:58,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-17 14:33:58,618 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:33:58,618 INFO L504 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:33:58,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,106 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:58,819 INFO L429 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:33:58,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:33:58,820 INFO L82 PathProgramCache]: Analyzing trace with hash 513671265, now seen corresponding path program 103 times [2020-12-17 14:33:58,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:33:58,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912096418] [2020-12-17 14:33:58,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:33:58,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:33:59,236 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:59,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912096418] [2020-12-17 14:33:59,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205697793] [2020-12-17 14:33:59,237 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:33:59,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:33:59,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-17 14:33:59,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:33:59,402 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:33:59,415 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:33:59,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:33:59,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2020-12-17 14:33:59,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91946491] [2020-12-17 14:33:59,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-12-17 14:33:59,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:33:59,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-12-17 14:33:59,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2020-12-17 14:33:59,417 INFO L87 Difference]: Start difference. First operand 13040 states. Second operand has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:00,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:34:00,978 INFO L93 Difference]: Finished difference Result 13360 states and 29450 transitions. [2020-12-17 14:34:00,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-12-17 14:34:00,979 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-12-17 14:34:00,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:34:01,001 INFO L225 Difference]: With dead ends: 13360 [2020-12-17 14:34:01,001 INFO L226 Difference]: Without dead ends: 13090 [2020-12-17 14:34:01,001 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 698 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=719, Invalid=1933, Unknown=0, NotChecked=0, Total=2652 [2020-12-17 14:34:01,001 INFO L78 Accepts]: Start accepts. Automaton has 13090 states. Word has length 101 [2020-12-17 14:34:01,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:34:01,002 INFO L481 AbstractCegarLoop]: Abstraction has 13090 states. [2020-12-17 14:34:01,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:01,002 INFO L276 IsEmpty]: Start isEmpty. Operand 13090 states. [2020-12-17 14:34:01,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-17 14:34:01,016 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:34:01,017 INFO L504 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:34:01,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:34:01,218 INFO L429 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:34:01,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:34:01,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1433274161, now seen corresponding path program 104 times [2020-12-17 14:34:01,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:34:01,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526216988] [2020-12-17 14:34:01,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:34:01,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:34:01,634 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:01,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526216988] [2020-12-17 14:34:01,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940158386] [2020-12-17 14:34:01,635 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:34:01,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 14:34:01,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:34:01,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-17 14:34:01,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:34:01,774 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:34:01,835 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:34:01,848 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:01,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:34:01,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2020-12-17 14:34:01,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006195796] [2020-12-17 14:34:01,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-17 14:34:01,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:34:01,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-17 14:34:01,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2020-12-17 14:34:01,850 INFO L87 Difference]: Start difference. First operand 13090 states. Second operand has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:03,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:34:03,732 INFO L93 Difference]: Finished difference Result 13450 states and 29630 transitions. [2020-12-17 14:34:03,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-12-17 14:34:03,733 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-12-17 14:34:03,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:34:03,755 INFO L225 Difference]: With dead ends: 13450 [2020-12-17 14:34:03,755 INFO L226 Difference]: Without dead ends: 13180 [2020-12-17 14:34:03,756 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 725 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=750, Invalid=2112, Unknown=0, NotChecked=0, Total=2862 [2020-12-17 14:34:03,756 INFO L78 Accepts]: Start accepts. Automaton has 13180 states. Word has length 101 [2020-12-17 14:34:03,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:34:03,756 INFO L481 AbstractCegarLoop]: Abstraction has 13180 states. [2020-12-17 14:34:03,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:03,756 INFO L276 IsEmpty]: Start isEmpty. Operand 13180 states. [2020-12-17 14:34:03,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-17 14:34:03,772 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:34:03,773 INFO L504 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:34:03,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2020-12-17 14:34:03,974 INFO L429 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:34:03,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:34:03,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1785350079, now seen corresponding path program 105 times [2020-12-17 14:34:03,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:34:03,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420655112] [2020-12-17 14:34:03,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:34:03,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:34:04,357 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:04,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420655112] [2020-12-17 14:34:04,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311130425] [2020-12-17 14:34:04,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:34:04,461 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2020-12-17 14:34:04,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:34:04,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-17 14:34:04,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:34:04,539 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:34:04,551 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:04,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:34:04,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2020-12-17 14:34:04,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672747531] [2020-12-17 14:34:04,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-12-17 14:34:04,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:34:04,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-12-17 14:34:04,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2020-12-17 14:34:04,553 INFO L87 Difference]: Start difference. First operand 13180 states. Second operand has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:06,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:34:06,134 INFO L93 Difference]: Finished difference Result 14652 states and 32994 transitions. [2020-12-17 14:34:06,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-12-17 14:34:06,136 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-12-17 14:34:06,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:34:06,159 INFO L225 Difference]: With dead ends: 14652 [2020-12-17 14:34:06,159 INFO L226 Difference]: Without dead ends: 14382 [2020-12-17 14:34:06,160 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=823, Invalid=2039, Unknown=0, NotChecked=0, Total=2862 [2020-12-17 14:34:06,160 INFO L78 Accepts]: Start accepts. Automaton has 14382 states. Word has length 101 [2020-12-17 14:34:06,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:34:06,160 INFO L481 AbstractCegarLoop]: Abstraction has 14382 states. [2020-12-17 14:34:06,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:06,161 INFO L276 IsEmpty]: Start isEmpty. Operand 14382 states. [2020-12-17 14:34:06,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-12-17 14:34:06,177 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:34:06,177 INFO L504 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:34:06,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 109 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2020-12-17 14:34:06,378 INFO L429 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:34:06,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:34:06,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1782376849, now seen corresponding path program 106 times [2020-12-17 14:34:06,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:34:06,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704413554] [2020-12-17 14:34:06,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:34:06,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:34:06,956 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:06,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704413554] [2020-12-17 14:34:06,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045925699] [2020-12-17 14:34:06,957 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:34:07,047 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 14:34:07,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:34:07,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-17 14:34:07,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:34:07,091 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:34:07,136 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:34:07,149 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 206 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:07,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:34:07,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 22 [2020-12-17 14:34:07,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171935743] [2020-12-17 14:34:07,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-17 14:34:07,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:34:07,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-17 14:34:07,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2020-12-17 14:34:07,152 INFO L87 Difference]: Start difference. First operand 14382 states. Second operand has 22 states, 22 states have (on average 4.7272727272727275) internal successors, (104), 22 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:09,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:34:09,279 INFO L93 Difference]: Finished difference Result 14190 states and 31476 transitions. [2020-12-17 14:34:09,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-12-17 14:34:09,280 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.7272727272727275) internal successors, (104), 22 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2020-12-17 14:34:09,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:34:09,302 INFO L225 Difference]: With dead ends: 14190 [2020-12-17 14:34:09,302 INFO L226 Difference]: Without dead ends: 13535 [2020-12-17 14:34:09,303 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 912 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=896, Invalid=2526, Unknown=0, NotChecked=0, Total=3422 [2020-12-17 14:34:09,303 INFO L78 Accepts]: Start accepts. Automaton has 13535 states. Word has length 101 [2020-12-17 14:34:09,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:34:09,304 INFO L481 AbstractCegarLoop]: Abstraction has 13535 states. [2020-12-17 14:34:09,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.7272727272727275) internal successors, (104), 22 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:09,304 INFO L276 IsEmpty]: Start isEmpty. Operand 13535 states. [2020-12-17 14:34:09,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-17 14:34:09,323 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:34:09,323 INFO L504 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:34:09,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2020-12-17 14:34:09,524 INFO L429 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:34:09,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:34:09,525 INFO L82 PathProgramCache]: Analyzing trace with hash -513424225, now seen corresponding path program 107 times [2020-12-17 14:34:09,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:34:09,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478732394] [2020-12-17 14:34:09,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:34:09,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:34:10,069 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:10,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478732394] [2020-12-17 14:34:10,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860083013] [2020-12-17 14:34:10,070 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:34:10,173 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-12-17 14:34:10,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:34:10,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-17 14:34:10,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:34:10,233 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:34:10,254 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:10,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:34:10,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2020-12-17 14:34:10,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236362011] [2020-12-17 14:34:10,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-17 14:34:10,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:34:10,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-17 14:34:10,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2020-12-17 14:34:10,256 INFO L87 Difference]: Start difference. First operand 13535 states. Second operand has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:11,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:34:11,213 INFO L93 Difference]: Finished difference Result 13855 states and 30570 transitions. [2020-12-17 14:34:11,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-17 14:34:11,213 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-12-17 14:34:11,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:34:11,228 INFO L225 Difference]: With dead ends: 13855 [2020-12-17 14:34:11,228 INFO L226 Difference]: Without dead ends: 13585 [2020-12-17 14:34:11,229 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=446, Invalid=1194, Unknown=0, NotChecked=0, Total=1640 [2020-12-17 14:34:11,229 INFO L78 Accepts]: Start accepts. Automaton has 13585 states. Word has length 106 [2020-12-17 14:34:11,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:34:11,229 INFO L481 AbstractCegarLoop]: Abstraction has 13585 states. [2020-12-17 14:34:11,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:11,229 INFO L276 IsEmpty]: Start isEmpty. Operand 13585 states. [2020-12-17 14:34:11,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-17 14:34:11,242 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:34:11,242 INFO L504 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:34:11,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,111 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:34:11,443 INFO L429 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:34:11,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:34:11,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1740396047, now seen corresponding path program 108 times [2020-12-17 14:34:11,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:34:11,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465488124] [2020-12-17 14:34:11,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:34:11,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:34:12,012 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:12,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465488124] [2020-12-17 14:34:12,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282704567] [2020-12-17 14:34:12,013 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:34:12,263 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-12-17 14:34:12,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:34:12,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-17 14:34:12,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:34:12,321 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:34:12,410 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:34:12,441 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:12,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:34:12,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2020-12-17 14:34:12,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028110453] [2020-12-17 14:34:12,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-17 14:34:12,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:34:12,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-17 14:34:12,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2020-12-17 14:34:12,443 INFO L87 Difference]: Start difference. First operand 13585 states. Second operand has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:13,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:34:13,742 INFO L93 Difference]: Finished difference Result 13905 states and 30670 transitions. [2020-12-17 14:34:13,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-12-17 14:34:13,743 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-12-17 14:34:13,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:34:13,764 INFO L225 Difference]: With dead ends: 13905 [2020-12-17 14:34:13,765 INFO L226 Difference]: Without dead ends: 13635 [2020-12-17 14:34:13,765 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=507, Invalid=1473, Unknown=0, NotChecked=0, Total=1980 [2020-12-17 14:34:13,765 INFO L78 Accepts]: Start accepts. Automaton has 13635 states. Word has length 106 [2020-12-17 14:34:13,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:34:13,766 INFO L481 AbstractCegarLoop]: Abstraction has 13635 states. [2020-12-17 14:34:13,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:13,766 INFO L276 IsEmpty]: Start isEmpty. Operand 13635 states. [2020-12-17 14:34:13,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-17 14:34:13,785 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:34:13,785 INFO L504 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:34:13,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2020-12-17 14:34:13,986 INFO L429 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:34:13,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:34:13,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1593051787, now seen corresponding path program 109 times [2020-12-17 14:34:13,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:34:13,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568124807] [2020-12-17 14:34:13,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:34:13,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:34:14,509 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:14,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568124807] [2020-12-17 14:34:14,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44433820] [2020-12-17 14:34:14,510 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:34:14,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:34:14,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-17 14:34:14,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:34:14,667 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:34:14,697 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:14,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:34:14,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2020-12-17 14:34:14,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179557244] [2020-12-17 14:34:14,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-17 14:34:14,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:34:14,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-17 14:34:14,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2020-12-17 14:34:14,700 INFO L87 Difference]: Start difference. First operand 13635 states. Second operand has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:15,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:34:15,718 INFO L93 Difference]: Finished difference Result 13955 states and 30770 transitions. [2020-12-17 14:34:15,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-12-17 14:34:15,719 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-12-17 14:34:15,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:34:15,740 INFO L225 Difference]: With dead ends: 13955 [2020-12-17 14:34:15,740 INFO L226 Difference]: Without dead ends: 13685 [2020-12-17 14:34:15,741 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=454, Invalid=1352, Unknown=0, NotChecked=0, Total=1806 [2020-12-17 14:34:15,741 INFO L78 Accepts]: Start accepts. Automaton has 13685 states. Word has length 106 [2020-12-17 14:34:15,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:34:15,741 INFO L481 AbstractCegarLoop]: Abstraction has 13685 states. [2020-12-17 14:34:15,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:15,741 INFO L276 IsEmpty]: Start isEmpty. Operand 13685 states. [2020-12-17 14:34:15,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-17 14:34:15,760 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:34:15,760 INFO L504 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:34:15,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2020-12-17 14:34:15,961 INFO L429 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:34:15,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:34:15,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1702804827, now seen corresponding path program 110 times [2020-12-17 14:34:15,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:34:15,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735775253] [2020-12-17 14:34:15,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:34:15,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:34:16,478 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:16,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735775253] [2020-12-17 14:34:16,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060493034] [2020-12-17 14:34:16,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:34:16,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 14:34:16,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:34:16,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-17 14:34:16,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:34:16,622 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:34:16,685 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:34:16,704 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:16,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:34:16,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2020-12-17 14:34:16,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184693538] [2020-12-17 14:34:16,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-17 14:34:16,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:34:16,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-17 14:34:16,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2020-12-17 14:34:16,706 INFO L87 Difference]: Start difference. First operand 13685 states. Second operand has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:18,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:34:18,269 INFO L93 Difference]: Finished difference Result 14005 states and 30870 transitions. [2020-12-17 14:34:18,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-12-17 14:34:18,271 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-12-17 14:34:18,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:34:18,289 INFO L225 Difference]: With dead ends: 14005 [2020-12-17 14:34:18,289 INFO L226 Difference]: Without dead ends: 13735 [2020-12-17 14:34:18,290 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=523, Invalid=1639, Unknown=0, NotChecked=0, Total=2162 [2020-12-17 14:34:18,290 INFO L78 Accepts]: Start accepts. Automaton has 13735 states. Word has length 106 [2020-12-17 14:34:18,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:34:18,290 INFO L481 AbstractCegarLoop]: Abstraction has 13735 states. [2020-12-17 14:34:18,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:18,290 INFO L276 IsEmpty]: Start isEmpty. Operand 13735 states. [2020-12-17 14:34:18,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-17 14:34:18,305 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:34:18,305 INFO L504 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:34:18,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2020-12-17 14:34:18,506 INFO L429 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:34:18,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:34:18,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1206968457, now seen corresponding path program 111 times [2020-12-17 14:34:18,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:34:18,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413012584] [2020-12-17 14:34:18,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:34:18,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:34:19,005 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:19,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413012584] [2020-12-17 14:34:19,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153313039] [2020-12-17 14:34:19,006 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:34:19,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2020-12-17 14:34:19,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:34:19,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-17 14:34:19,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:34:19,188 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:34:19,206 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:19,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:34:19,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2020-12-17 14:34:19,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809170495] [2020-12-17 14:34:19,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-17 14:34:19,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:34:19,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-17 14:34:19,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2020-12-17 14:34:19,208 INFO L87 Difference]: Start difference. First operand 13735 states. Second operand has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:20,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:34:20,370 INFO L93 Difference]: Finished difference Result 14055 states and 30970 transitions. [2020-12-17 14:34:20,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-12-17 14:34:20,371 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-12-17 14:34:20,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:34:20,397 INFO L225 Difference]: With dead ends: 14055 [2020-12-17 14:34:20,397 INFO L226 Difference]: Without dead ends: 13785 [2020-12-17 14:34:20,398 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=478, Invalid=1502, Unknown=0, NotChecked=0, Total=1980 [2020-12-17 14:34:20,398 INFO L78 Accepts]: Start accepts. Automaton has 13785 states. Word has length 106 [2020-12-17 14:34:20,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:34:20,398 INFO L481 AbstractCegarLoop]: Abstraction has 13785 states. [2020-12-17 14:34:20,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:20,398 INFO L276 IsEmpty]: Start isEmpty. Operand 13785 states. [2020-12-17 14:34:20,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-17 14:34:20,418 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:34:20,418 INFO L504 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:34:20,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,115 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:34:20,619 INFO L429 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:34:20,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:34:20,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1910888281, now seen corresponding path program 112 times [2020-12-17 14:34:20,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:34:20,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736626119] [2020-12-17 14:34:20,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:34:20,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:34:21,132 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:21,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736626119] [2020-12-17 14:34:21,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401274977] [2020-12-17 14:34:21,133 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:34:21,226 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 14:34:21,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:34:21,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-17 14:34:21,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:34:21,270 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:34:21,333 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:34:21,351 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:21,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:34:21,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2020-12-17 14:34:21,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984878931] [2020-12-17 14:34:21,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-17 14:34:21,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:34:21,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-17 14:34:21,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2020-12-17 14:34:21,353 INFO L87 Difference]: Start difference. First operand 13785 states. Second operand has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:22,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:34:22,879 INFO L93 Difference]: Finished difference Result 14105 states and 31070 transitions. [2020-12-17 14:34:22,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-12-17 14:34:22,880 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-12-17 14:34:22,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:34:22,902 INFO L225 Difference]: With dead ends: 14105 [2020-12-17 14:34:22,902 INFO L226 Difference]: Without dead ends: 13835 [2020-12-17 14:34:22,903 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=555, Invalid=1797, Unknown=0, NotChecked=0, Total=2352 [2020-12-17 14:34:22,903 INFO L78 Accepts]: Start accepts. Automaton has 13835 states. Word has length 106 [2020-12-17 14:34:22,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:34:22,904 INFO L481 AbstractCegarLoop]: Abstraction has 13835 states. [2020-12-17 14:34:22,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:22,904 INFO L276 IsEmpty]: Start isEmpty. Operand 13835 states. [2020-12-17 14:34:22,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-17 14:34:22,924 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:34:22,924 INFO L504 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:34:23,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,116 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:34:23,125 INFO L429 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:34:23,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:34:23,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1499235321, now seen corresponding path program 113 times [2020-12-17 14:34:23,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:34:23,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089094308] [2020-12-17 14:34:23,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:34:23,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:34:23,611 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:23,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089094308] [2020-12-17 14:34:23,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843528948] [2020-12-17 14:34:23,612 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:34:23,712 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-12-17 14:34:23,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:34:23,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-17 14:34:23,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:34:23,923 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:34:23,942 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:23,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:34:23,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2020-12-17 14:34:23,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842085756] [2020-12-17 14:34:23,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-17 14:34:23,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:34:23,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-17 14:34:23,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2020-12-17 14:34:23,946 INFO L87 Difference]: Start difference. First operand 13835 states. Second operand has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:25,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:34:25,237 INFO L93 Difference]: Finished difference Result 14155 states and 31170 transitions. [2020-12-17 14:34:25,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-17 14:34:25,238 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-12-17 14:34:25,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:34:25,260 INFO L225 Difference]: With dead ends: 14155 [2020-12-17 14:34:25,260 INFO L226 Difference]: Without dead ends: 13885 [2020-12-17 14:34:25,261 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=518, Invalid=1644, Unknown=0, NotChecked=0, Total=2162 [2020-12-17 14:34:25,261 INFO L78 Accepts]: Start accepts. Automaton has 13885 states. Word has length 106 [2020-12-17 14:34:25,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:34:25,261 INFO L481 AbstractCegarLoop]: Abstraction has 13885 states. [2020-12-17 14:34:25,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:25,262 INFO L276 IsEmpty]: Start isEmpty. Operand 13885 states. [2020-12-17 14:34:25,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-17 14:34:25,280 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:34:25,280 INFO L504 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:34:25,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,117 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:34:25,481 INFO L429 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:34:25,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:34:25,482 INFO L82 PathProgramCache]: Analyzing trace with hash -2092452137, now seen corresponding path program 114 times [2020-12-17 14:34:25,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:34:25,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109914831] [2020-12-17 14:34:25,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:34:25,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:34:25,975 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:25,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109914831] [2020-12-17 14:34:25,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939342626] [2020-12-17 14:34:25,975 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:34:26,077 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-12-17 14:34:26,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:34:26,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-17 14:34:26,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:34:26,120 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:34:26,191 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:34:26,209 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:26,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:34:26,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2020-12-17 14:34:26,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742245731] [2020-12-17 14:34:26,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-17 14:34:26,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:34:26,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-17 14:34:26,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2020-12-17 14:34:26,211 INFO L87 Difference]: Start difference. First operand 13885 states. Second operand has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:27,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:34:27,906 INFO L93 Difference]: Finished difference Result 14205 states and 31270 transitions. [2020-12-17 14:34:27,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-12-17 14:34:27,906 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-12-17 14:34:27,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:34:27,932 INFO L225 Difference]: With dead ends: 14205 [2020-12-17 14:34:27,932 INFO L226 Difference]: Without dead ends: 13935 [2020-12-17 14:34:27,933 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=603, Invalid=1947, Unknown=0, NotChecked=0, Total=2550 [2020-12-17 14:34:27,933 INFO L78 Accepts]: Start accepts. Automaton has 13935 states. Word has length 106 [2020-12-17 14:34:27,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:34:27,933 INFO L481 AbstractCegarLoop]: Abstraction has 13935 states. [2020-12-17 14:34:27,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:27,933 INFO L276 IsEmpty]: Start isEmpty. Operand 13935 states. [2020-12-17 14:34:27,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-17 14:34:27,953 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:34:27,953 INFO L504 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:34:28,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2020-12-17 14:34:28,154 INFO L429 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:34:28,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:34:28,155 INFO L82 PathProgramCache]: Analyzing trace with hash 2029829381, now seen corresponding path program 115 times [2020-12-17 14:34:28,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:34:28,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877959276] [2020-12-17 14:34:28,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:34:28,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:34:28,579 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:28,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877959276] [2020-12-17 14:34:28,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491249871] [2020-12-17 14:34:28,580 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:34:28,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:34:28,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-17 14:34:28,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:34:28,745 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:34:28,760 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:28,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:34:28,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2020-12-17 14:34:28,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375057707] [2020-12-17 14:34:28,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-17 14:34:28,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:34:28,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-17 14:34:28,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2020-12-17 14:34:28,762 INFO L87 Difference]: Start difference. First operand 13935 states. Second operand has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:30,003 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-12-17 14:34:30,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:34:30,352 INFO L93 Difference]: Finished difference Result 14255 states and 31370 transitions. [2020-12-17 14:34:30,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-17 14:34:30,354 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-12-17 14:34:30,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:34:30,376 INFO L225 Difference]: With dead ends: 14255 [2020-12-17 14:34:30,376 INFO L226 Difference]: Without dead ends: 13985 [2020-12-17 14:34:30,377 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=574, Invalid=1778, Unknown=0, NotChecked=0, Total=2352 [2020-12-17 14:34:30,377 INFO L78 Accepts]: Start accepts. Automaton has 13985 states. Word has length 106 [2020-12-17 14:34:30,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:34:30,377 INFO L481 AbstractCegarLoop]: Abstraction has 13985 states. [2020-12-17 14:34:30,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:30,377 INFO L276 IsEmpty]: Start isEmpty. Operand 13985 states. [2020-12-17 14:34:30,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-17 14:34:30,395 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:34:30,395 INFO L504 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:34:30,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2020-12-17 14:34:30,597 INFO L429 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:34:30,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:34:30,597 INFO L82 PathProgramCache]: Analyzing trace with hash -103466027, now seen corresponding path program 116 times [2020-12-17 14:34:30,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:34:30,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023366562] [2020-12-17 14:34:30,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:34:30,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:34:31,048 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:31,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023366562] [2020-12-17 14:34:31,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262303610] [2020-12-17 14:34:31,049 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:34:31,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 14:34:31,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:34:31,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-17 14:34:31,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:34:31,190 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:34:31,259 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:34:31,274 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:31,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:34:31,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2020-12-17 14:34:31,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480027232] [2020-12-17 14:34:31,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-17 14:34:31,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:34:31,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-17 14:34:31,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2020-12-17 14:34:31,276 INFO L87 Difference]: Start difference. First operand 13985 states. Second operand has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:33,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:34:33,106 INFO L93 Difference]: Finished difference Result 14305 states and 31470 transitions. [2020-12-17 14:34:33,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-12-17 14:34:33,107 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-12-17 14:34:33,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:34:33,130 INFO L225 Difference]: With dead ends: 14305 [2020-12-17 14:34:33,131 INFO L226 Difference]: Without dead ends: 14035 [2020-12-17 14:34:33,131 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=667, Invalid=2089, Unknown=0, NotChecked=0, Total=2756 [2020-12-17 14:34:33,131 INFO L78 Accepts]: Start accepts. Automaton has 14035 states. Word has length 106 [2020-12-17 14:34:33,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:34:33,131 INFO L481 AbstractCegarLoop]: Abstraction has 14035 states. [2020-12-17 14:34:33,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:33,132 INFO L276 IsEmpty]: Start isEmpty. Operand 14035 states. [2020-12-17 14:34:33,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-17 14:34:33,151 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:34:33,151 INFO L504 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:34:33,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2020-12-17 14:34:33,352 INFO L429 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:34:33,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:34:33,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1787134851, now seen corresponding path program 117 times [2020-12-17 14:34:33,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:34:33,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271401345] [2020-12-17 14:34:33,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:34:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:34:33,800 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:33,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271401345] [2020-12-17 14:34:33,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129603828] [2020-12-17 14:34:33,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:34:33,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2020-12-17 14:34:33,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:34:33,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-17 14:34:33,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:34:33,976 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:34:33,992 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:33,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:34:33,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2020-12-17 14:34:33,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464398999] [2020-12-17 14:34:33,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-17 14:34:33,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:34:33,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-17 14:34:33,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2020-12-17 14:34:33,994 INFO L87 Difference]: Start difference. First operand 14035 states. Second operand has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:35,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:34:35,572 INFO L93 Difference]: Finished difference Result 14355 states and 31570 transitions. [2020-12-17 14:34:35,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-12-17 14:34:35,573 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-12-17 14:34:35,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:34:35,594 INFO L225 Difference]: With dead ends: 14355 [2020-12-17 14:34:35,595 INFO L226 Difference]: Without dead ends: 14085 [2020-12-17 14:34:35,596 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 600 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=646, Invalid=1904, Unknown=0, NotChecked=0, Total=2550 [2020-12-17 14:34:35,596 INFO L78 Accepts]: Start accepts. Automaton has 14085 states. Word has length 106 [2020-12-17 14:34:35,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:34:35,596 INFO L481 AbstractCegarLoop]: Abstraction has 14085 states. [2020-12-17 14:34:35,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:35,596 INFO L276 IsEmpty]: Start isEmpty. Operand 14085 states. [2020-12-17 14:34:35,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-17 14:34:35,615 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:34:35,615 INFO L504 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:34:35,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2020-12-17 14:34:35,816 INFO L429 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:34:35,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:34:35,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1286125997, now seen corresponding path program 118 times [2020-12-17 14:34:35,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:34:35,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475879246] [2020-12-17 14:34:35,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:34:35,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:34:36,438 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:36,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475879246] [2020-12-17 14:34:36,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776796615] [2020-12-17 14:34:36,438 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:34:36,534 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 14:34:36,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:34:36,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-17 14:34:36,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:34:36,585 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:34:36,667 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:34:36,690 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:36,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:34:36,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2020-12-17 14:34:36,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091305231] [2020-12-17 14:34:36,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-17 14:34:36,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:34:36,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-17 14:34:36,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2020-12-17 14:34:36,692 INFO L87 Difference]: Start difference. First operand 14085 states. Second operand has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:38,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:34:38,571 INFO L93 Difference]: Finished difference Result 14405 states and 31670 transitions. [2020-12-17 14:34:38,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-12-17 14:34:38,572 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-12-17 14:34:38,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:34:38,592 INFO L225 Difference]: With dead ends: 14405 [2020-12-17 14:34:38,593 INFO L226 Difference]: Without dead ends: 14135 [2020-12-17 14:34:38,593 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=747, Invalid=2223, Unknown=0, NotChecked=0, Total=2970 [2020-12-17 14:34:38,593 INFO L78 Accepts]: Start accepts. Automaton has 14135 states. Word has length 106 [2020-12-17 14:34:38,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:34:38,593 INFO L481 AbstractCegarLoop]: Abstraction has 14135 states. [2020-12-17 14:34:38,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:38,594 INFO L276 IsEmpty]: Start isEmpty. Operand 14135 states. [2020-12-17 14:34:38,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-17 14:34:38,610 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:34:38,610 INFO L504 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:34:38,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2020-12-17 14:34:38,812 INFO L429 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:34:38,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:34:38,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1918807937, now seen corresponding path program 119 times [2020-12-17 14:34:38,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:34:38,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21351074] [2020-12-17 14:34:38,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:34:38,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:34:39,205 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:39,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21351074] [2020-12-17 14:34:39,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385131061] [2020-12-17 14:34:39,206 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:34:39,302 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-12-17 14:34:39,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:34:39,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-17 14:34:39,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:34:39,363 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:34:39,376 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:39,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:34:39,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2020-12-17 14:34:39,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319395662] [2020-12-17 14:34:39,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-17 14:34:39,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:34:39,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-17 14:34:39,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2020-12-17 14:34:39,378 INFO L87 Difference]: Start difference. First operand 14135 states. Second operand has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:40,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:34:40,914 INFO L93 Difference]: Finished difference Result 14455 states and 31770 transitions. [2020-12-17 14:34:40,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-12-17 14:34:40,915 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-12-17 14:34:40,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:34:40,933 INFO L225 Difference]: With dead ends: 14455 [2020-12-17 14:34:40,934 INFO L226 Difference]: Without dead ends: 14185 [2020-12-17 14:34:40,934 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=734, Invalid=2022, Unknown=0, NotChecked=0, Total=2756 [2020-12-17 14:34:40,934 INFO L78 Accepts]: Start accepts. Automaton has 14185 states. Word has length 106 [2020-12-17 14:34:40,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:34:40,935 INFO L481 AbstractCegarLoop]: Abstraction has 14185 states. [2020-12-17 14:34:40,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:40,935 INFO L276 IsEmpty]: Start isEmpty. Operand 14185 states. [2020-12-17 14:34:40,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-17 14:34:40,950 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:34:40,950 INFO L504 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:34:41,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,123 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:34:41,152 INFO L429 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:34:41,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:34:41,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1456556463, now seen corresponding path program 120 times [2020-12-17 14:34:41,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:34:41,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948415511] [2020-12-17 14:34:41,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:34:41,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:34:41,574 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:41,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948415511] [2020-12-17 14:34:41,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279747646] [2020-12-17 14:34:41,575 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:34:41,681 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-12-17 14:34:41,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:34:41,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-17 14:34:41,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:34:41,730 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:34:41,800 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:34:41,830 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:41,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:34:41,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2020-12-17 14:34:41,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135560423] [2020-12-17 14:34:41,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-17 14:34:41,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:34:41,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-17 14:34:41,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2020-12-17 14:34:41,833 INFO L87 Difference]: Start difference. First operand 14185 states. Second operand has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:42,369 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 13 [2020-12-17 14:34:44,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:34:44,051 INFO L93 Difference]: Finished difference Result 14545 states and 31950 transitions. [2020-12-17 14:34:44,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-12-17 14:34:44,052 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-12-17 14:34:44,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:34:44,070 INFO L225 Difference]: With dead ends: 14545 [2020-12-17 14:34:44,070 INFO L226 Difference]: Without dead ends: 14275 [2020-12-17 14:34:44,070 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=843, Invalid=2349, Unknown=0, NotChecked=0, Total=3192 [2020-12-17 14:34:44,070 INFO L78 Accepts]: Start accepts. Automaton has 14275 states. Word has length 106 [2020-12-17 14:34:44,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:34:44,071 INFO L481 AbstractCegarLoop]: Abstraction has 14275 states. [2020-12-17 14:34:44,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 23 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:44,071 INFO L276 IsEmpty]: Start isEmpty. Operand 14275 states. [2020-12-17 14:34:44,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-17 14:34:44,086 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:34:44,086 INFO L504 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:34:44,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2020-12-17 14:34:44,286 INFO L429 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:34:44,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:34:44,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1104480545, now seen corresponding path program 121 times [2020-12-17 14:34:44,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:34:44,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34555393] [2020-12-17 14:34:44,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:34:44,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:34:44,674 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:44,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34555393] [2020-12-17 14:34:44,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463615940] [2020-12-17 14:34:44,674 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:34:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:34:44,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-17 14:34:44,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:34:44,840 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:34:44,853 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:44,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:34:44,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2020-12-17 14:34:44,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341111214] [2020-12-17 14:34:44,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-17 14:34:44,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:34:44,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-17 14:34:44,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2020-12-17 14:34:44,856 INFO L87 Difference]: Start difference. First operand 14275 states. Second operand has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:46,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:34:46,647 INFO L93 Difference]: Finished difference Result 15747 states and 35314 transitions. [2020-12-17 14:34:46,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-12-17 14:34:46,649 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-12-17 14:34:46,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:34:46,674 INFO L225 Difference]: With dead ends: 15747 [2020-12-17 14:34:46,674 INFO L226 Difference]: Without dead ends: 15477 [2020-12-17 14:34:46,675 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 755 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=839, Invalid=2131, Unknown=0, NotChecked=0, Total=2970 [2020-12-17 14:34:46,675 INFO L78 Accepts]: Start accepts. Automaton has 15477 states. Word has length 106 [2020-12-17 14:34:46,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:34:46,675 INFO L481 AbstractCegarLoop]: Abstraction has 15477 states. [2020-12-17 14:34:46,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:46,675 INFO L276 IsEmpty]: Start isEmpty. Operand 15477 states. [2020-12-17 14:34:46,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-12-17 14:34:46,695 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:34:46,695 INFO L504 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:34:46,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2020-12-17 14:34:46,896 INFO L429 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:34:46,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:34:46,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1107453775, now seen corresponding path program 122 times [2020-12-17 14:34:46,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:34:46,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873521371] [2020-12-17 14:34:46,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:34:46,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:34:47,353 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:47,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873521371] [2020-12-17 14:34:47,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334235105] [2020-12-17 14:34:47,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:34:47,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 14:34:47,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:34:47,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-17 14:34:47,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:34:47,503 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:34:47,530 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:34:47,542 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:47,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:34:47,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2020-12-17 14:34:47,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686062166] [2020-12-17 14:34:47,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-17 14:34:47,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:34:47,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-17 14:34:47,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2020-12-17 14:34:47,545 INFO L87 Difference]: Start difference. First operand 15477 states. Second operand has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:49,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:34:49,794 INFO L93 Difference]: Finished difference Result 15029 states and 33156 transitions. [2020-12-17 14:34:49,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-12-17 14:34:49,794 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2020-12-17 14:34:49,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:34:49,810 INFO L225 Difference]: With dead ends: 15029 [2020-12-17 14:34:49,810 INFO L226 Difference]: Without dead ends: 14430 [2020-12-17 14:34:49,810 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=935, Invalid=2371, Unknown=0, NotChecked=0, Total=3306 [2020-12-17 14:34:49,810 INFO L78 Accepts]: Start accepts. Automaton has 14430 states. Word has length 106 [2020-12-17 14:34:49,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:34:49,810 INFO L481 AbstractCegarLoop]: Abstraction has 14430 states. [2020-12-17 14:34:49,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 4.909090909090909) internal successors, (108), 22 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:49,811 INFO L276 IsEmpty]: Start isEmpty. Operand 14430 states. [2020-12-17 14:34:49,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-17 14:34:49,825 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:34:49,826 INFO L504 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:34:50,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,126 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:34:50,028 INFO L429 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:34:50,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:34:50,028 INFO L82 PathProgramCache]: Analyzing trace with hash -485429072, now seen corresponding path program 123 times [2020-12-17 14:34:50,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:34:50,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151404879] [2020-12-17 14:34:50,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:34:50,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:34:50,579 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:50,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151404879] [2020-12-17 14:34:50,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674731896] [2020-12-17 14:34:50,579 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:34:50,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2020-12-17 14:34:50,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:34:50,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-17 14:34:50,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:34:50,707 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:34:50,729 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:50,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:34:50,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-12-17 14:34:50,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572539035] [2020-12-17 14:34:50,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-17 14:34:50,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:34:50,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-17 14:34:50,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-12-17 14:34:50,731 INFO L87 Difference]: Start difference. First operand 14430 states. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:51,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:34:51,626 INFO L93 Difference]: Finished difference Result 14750 states and 32430 transitions. [2020-12-17 14:34:51,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-17 14:34:51,626 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-12-17 14:34:51,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:34:51,645 INFO L225 Difference]: With dead ends: 14750 [2020-12-17 14:34:51,646 INFO L226 Difference]: Without dead ends: 14480 [2020-12-17 14:34:51,646 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=466, Invalid=1174, Unknown=0, NotChecked=0, Total=1640 [2020-12-17 14:34:51,646 INFO L78 Accepts]: Start accepts. Automaton has 14480 states. Word has length 111 [2020-12-17 14:34:51,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:34:51,646 INFO L481 AbstractCegarLoop]: Abstraction has 14480 states. [2020-12-17 14:34:51,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:51,646 INFO L276 IsEmpty]: Start isEmpty. Operand 14480 states. [2020-12-17 14:34:51,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-17 14:34:51,663 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:34:51,663 INFO L504 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:34:51,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,127 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:34:51,864 INFO L429 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:34:51,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:34:51,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1361717374, now seen corresponding path program 124 times [2020-12-17 14:34:51,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:34:51,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650880340] [2020-12-17 14:34:51,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:34:51,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:34:52,450 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:52,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650880340] [2020-12-17 14:34:52,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739752431] [2020-12-17 14:34:52,451 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:34:52,550 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 14:34:52,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:34:52,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-17 14:34:52,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:34:52,592 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:34:52,611 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:34:52,633 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:52,633 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:34:52,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-12-17 14:34:52,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028595610] [2020-12-17 14:34:52,634 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-17 14:34:52,634 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:34:52,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-17 14:34:52,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2020-12-17 14:34:52,635 INFO L87 Difference]: Start difference. First operand 14480 states. Second operand has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:53,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:34:53,642 INFO L93 Difference]: Finished difference Result 14800 states and 32530 transitions. [2020-12-17 14:34:53,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-12-17 14:34:53,643 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-12-17 14:34:53,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:34:53,662 INFO L225 Difference]: With dead ends: 14800 [2020-12-17 14:34:53,663 INFO L226 Difference]: Without dead ends: 14530 [2020-12-17 14:34:53,663 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=489, Invalid=1403, Unknown=0, NotChecked=0, Total=1892 [2020-12-17 14:34:53,663 INFO L78 Accepts]: Start accepts. Automaton has 14530 states. Word has length 111 [2020-12-17 14:34:53,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:34:53,664 INFO L481 AbstractCegarLoop]: Abstraction has 14530 states. [2020-12-17 14:34:53,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:53,664 INFO L276 IsEmpty]: Start isEmpty. Operand 14530 states. [2020-12-17 14:34:53,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-17 14:34:53,678 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:34:53,678 INFO L504 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:34:53,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,128 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:34:53,879 INFO L429 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:34:53,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:34:53,880 INFO L82 PathProgramCache]: Analyzing trace with hash 773963676, now seen corresponding path program 125 times [2020-12-17 14:34:53,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:34:53,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529555789] [2020-12-17 14:34:53,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:34:53,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:34:54,418 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:54,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529555789] [2020-12-17 14:34:54,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268379211] [2020-12-17 14:34:54,418 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:34:54,674 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-12-17 14:34:54,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:34:54,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-17 14:34:54,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:34:54,700 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:34:54,731 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:54,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:34:54,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-12-17 14:34:54,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653704364] [2020-12-17 14:34:54,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-17 14:34:54,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:34:54,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-17 14:34:54,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2020-12-17 14:34:54,735 INFO L87 Difference]: Start difference. First operand 14530 states. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:55,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:34:55,766 INFO L93 Difference]: Finished difference Result 14850 states and 32630 transitions. [2020-12-17 14:34:55,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-12-17 14:34:55,769 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-12-17 14:34:55,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:34:55,788 INFO L225 Difference]: With dead ends: 14850 [2020-12-17 14:34:55,788 INFO L226 Difference]: Without dead ends: 14580 [2020-12-17 14:34:55,788 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=479, Invalid=1413, Unknown=0, NotChecked=0, Total=1892 [2020-12-17 14:34:55,788 INFO L78 Accepts]: Start accepts. Automaton has 14580 states. Word has length 111 [2020-12-17 14:34:55,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:34:55,789 INFO L481 AbstractCegarLoop]: Abstraction has 14580 states. [2020-12-17 14:34:55,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:55,789 INFO L276 IsEmpty]: Start isEmpty. Operand 14580 states. [2020-12-17 14:34:55,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-17 14:34:55,804 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:34:55,805 INFO L504 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:34:56,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2020-12-17 14:34:56,005 INFO L429 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:34:56,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:34:56,006 INFO L82 PathProgramCache]: Analyzing trace with hash 239545964, now seen corresponding path program 126 times [2020-12-17 14:34:56,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:34:56,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292283194] [2020-12-17 14:34:56,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:34:56,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:34:56,595 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:56,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292283194] [2020-12-17 14:34:56,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406119754] [2020-12-17 14:34:56,596 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:34:56,697 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-12-17 14:34:56,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:34:56,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-17 14:34:56,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:34:56,739 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:34:56,761 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:34:56,798 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:56,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:34:56,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-12-17 14:34:56,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162140630] [2020-12-17 14:34:56,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-17 14:34:56,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:34:56,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-17 14:34:56,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2020-12-17 14:34:56,801 INFO L87 Difference]: Start difference. First operand 14580 states. Second operand has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:58,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:34:58,276 INFO L93 Difference]: Finished difference Result 14950 states and 32830 transitions. [2020-12-17 14:34:58,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-12-17 14:34:58,278 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-12-17 14:34:58,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:34:58,302 INFO L225 Difference]: With dead ends: 14950 [2020-12-17 14:34:58,303 INFO L226 Difference]: Without dead ends: 14680 [2020-12-17 14:34:58,303 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=529, Invalid=1633, Unknown=0, NotChecked=0, Total=2162 [2020-12-17 14:34:58,303 INFO L78 Accepts]: Start accepts. Automaton has 14680 states. Word has length 111 [2020-12-17 14:34:58,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:34:58,304 INFO L481 AbstractCegarLoop]: Abstraction has 14680 states. [2020-12-17 14:34:58,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:34:58,304 INFO L276 IsEmpty]: Start isEmpty. Operand 14680 states. [2020-12-17 14:34:58,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-17 14:34:58,323 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:34:58,323 INFO L504 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:34:58,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2020-12-17 14:34:58,524 INFO L429 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:34:58,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:34:58,525 INFO L82 PathProgramCache]: Analyzing trace with hash 264351770, now seen corresponding path program 127 times [2020-12-17 14:34:58,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:34:58,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361519560] [2020-12-17 14:34:58,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:34:58,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:34:59,070 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:59,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361519560] [2020-12-17 14:34:59,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599679629] [2020-12-17 14:34:59,071 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:34:59,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:34:59,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-17 14:34:59,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:34:59,194 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:34:59,215 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:34:59,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:34:59,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-12-17 14:34:59,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817019486] [2020-12-17 14:34:59,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-17 14:34:59,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:34:59,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-17 14:34:59,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2020-12-17 14:34:59,217 INFO L87 Difference]: Start difference. First operand 14680 states. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:35:00,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:35:00,506 INFO L93 Difference]: Finished difference Result 15000 states and 32930 transitions. [2020-12-17 14:35:00,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-17 14:35:00,508 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-12-17 14:35:00,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:35:00,531 INFO L225 Difference]: With dead ends: 15000 [2020-12-17 14:35:00,532 INFO L226 Difference]: Without dead ends: 14730 [2020-12-17 14:35:00,532 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=531, Invalid=1631, Unknown=0, NotChecked=0, Total=2162 [2020-12-17 14:35:00,533 INFO L78 Accepts]: Start accepts. Automaton has 14730 states. Word has length 111 [2020-12-17 14:35:00,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:35:00,533 INFO L481 AbstractCegarLoop]: Abstraction has 14730 states. [2020-12-17 14:35:00,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:35:00,533 INFO L276 IsEmpty]: Start isEmpty. Operand 14730 states. [2020-12-17 14:35:00,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-17 14:35:00,752 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:35:00,752 INFO L504 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:35:00,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135,131 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:35:00,956 INFO L429 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:35:00,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:35:00,957 INFO L82 PathProgramCache]: Analyzing trace with hash 374104810, now seen corresponding path program 128 times [2020-12-17 14:35:00,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:35:00,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305381579] [2020-12-17 14:35:00,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:35:00,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:35:01,554 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:35:01,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305381579] [2020-12-17 14:35:01,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324577046] [2020-12-17 14:35:01,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:35:01,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 14:35:01,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:35:01,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-17 14:35:01,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:35:01,699 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:35:01,724 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:35:01,745 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:35:01,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:35:01,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-12-17 14:35:01,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774926342] [2020-12-17 14:35:01,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-17 14:35:01,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:35:01,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-17 14:35:01,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2020-12-17 14:35:01,747 INFO L87 Difference]: Start difference. First operand 14730 states. Second operand has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:35:03,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:35:03,293 INFO L93 Difference]: Finished difference Result 15050 states and 33030 transitions. [2020-12-17 14:35:03,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-12-17 14:35:03,294 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-12-17 14:35:03,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:35:03,319 INFO L225 Difference]: With dead ends: 15050 [2020-12-17 14:35:03,320 INFO L226 Difference]: Without dead ends: 14780 [2020-12-17 14:35:03,320 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=553, Invalid=1799, Unknown=0, NotChecked=0, Total=2352 [2020-12-17 14:35:03,320 INFO L78 Accepts]: Start accepts. Automaton has 14780 states. Word has length 111 [2020-12-17 14:35:03,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:35:03,321 INFO L481 AbstractCegarLoop]: Abstraction has 14780 states. [2020-12-17 14:35:03,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:35:03,321 INFO L276 IsEmpty]: Start isEmpty. Operand 14780 states. [2020-12-17 14:35:03,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-17 14:35:03,341 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:35:03,341 INFO L504 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:35:03,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2020-12-17 14:35:03,543 INFO L429 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:35:03,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:35:03,544 INFO L82 PathProgramCache]: Analyzing trace with hash -121731560, now seen corresponding path program 129 times [2020-12-17 14:35:03,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:35:03,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582686206] [2020-12-17 14:35:03,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:35:03,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:35:04,110 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:35:04,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582686206] [2020-12-17 14:35:04,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775688963] [2020-12-17 14:35:04,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:35:04,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2020-12-17 14:35:04,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:35:04,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-17 14:35:04,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:35:04,250 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:35:04,268 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:35:04,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:35:04,269 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-12-17 14:35:04,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501500707] [2020-12-17 14:35:04,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-17 14:35:04,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:35:04,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-17 14:35:04,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2020-12-17 14:35:04,270 INFO L87 Difference]: Start difference. First operand 14780 states. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:35:05,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:35:05,696 INFO L93 Difference]: Finished difference Result 15100 states and 33130 transitions. [2020-12-17 14:35:05,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-17 14:35:05,698 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-12-17 14:35:05,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:35:05,724 INFO L225 Difference]: With dead ends: 15100 [2020-12-17 14:35:05,724 INFO L226 Difference]: Without dead ends: 14830 [2020-12-17 14:35:05,724 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=569, Invalid=1783, Unknown=0, NotChecked=0, Total=2352 [2020-12-17 14:35:05,724 INFO L78 Accepts]: Start accepts. Automaton has 14830 states. Word has length 111 [2020-12-17 14:35:05,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:35:05,724 INFO L481 AbstractCegarLoop]: Abstraction has 14830 states. [2020-12-17 14:35:05,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:35:05,725 INFO L276 IsEmpty]: Start isEmpty. Operand 14830 states. [2020-12-17 14:35:05,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-17 14:35:05,738 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:35:05,738 INFO L504 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:35:05,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable137 [2020-12-17 14:35:05,940 INFO L429 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:35:05,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:35:05,940 INFO L82 PathProgramCache]: Analyzing trace with hash 582188264, now seen corresponding path program 130 times [2020-12-17 14:35:05,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:35:05,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141269698] [2020-12-17 14:35:05,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:35:05,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:35:06,538 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:35:06,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141269698] [2020-12-17 14:35:06,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725809640] [2020-12-17 14:35:06,539 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:35:06,787 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 14:35:06,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:35:06,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-17 14:35:06,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:35:06,832 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:35:06,852 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:35:06,869 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:35:06,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:35:06,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-12-17 14:35:06,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211142793] [2020-12-17 14:35:06,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-17 14:35:06,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:35:06,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-17 14:35:06,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2020-12-17 14:35:06,871 INFO L87 Difference]: Start difference. First operand 14830 states. Second operand has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:35:08,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:35:08,599 INFO L93 Difference]: Finished difference Result 15150 states and 33230 transitions. [2020-12-17 14:35:08,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-12-17 14:35:08,601 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-12-17 14:35:08,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:35:08,625 INFO L225 Difference]: With dead ends: 15150 [2020-12-17 14:35:08,625 INFO L226 Difference]: Without dead ends: 14880 [2020-12-17 14:35:08,626 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=593, Invalid=1957, Unknown=0, NotChecked=0, Total=2550 [2020-12-17 14:35:08,626 INFO L78 Accepts]: Start accepts. Automaton has 14880 states. Word has length 111 [2020-12-17 14:35:08,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:35:08,626 INFO L481 AbstractCegarLoop]: Abstraction has 14880 states. [2020-12-17 14:35:08,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:35:08,627 INFO L276 IsEmpty]: Start isEmpty. Operand 14880 states. [2020-12-17 14:35:08,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-17 14:35:08,650 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:35:08,650 INFO L504 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:35:08,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2020-12-17 14:35:08,851 INFO L429 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:35:08,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:35:08,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1467031958, now seen corresponding path program 131 times [2020-12-17 14:35:08,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:35:08,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208577198] [2020-12-17 14:35:08,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:35:08,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:35:09,369 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:35:09,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208577198] [2020-12-17 14:35:09,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426575931] [2020-12-17 14:35:09,370 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:35:09,468 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-12-17 14:35:09,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:35:09,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-17 14:35:09,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:35:09,499 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:35:09,525 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:35:09,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:35:09,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-12-17 14:35:09,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251466230] [2020-12-17 14:35:09,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-17 14:35:09,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:35:09,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-17 14:35:09,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2020-12-17 14:35:09,526 INFO L87 Difference]: Start difference. First operand 14880 states. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:35:11,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:35:11,062 INFO L93 Difference]: Finished difference Result 15200 states and 33330 transitions. [2020-12-17 14:35:11,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-12-17 14:35:11,063 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-12-17 14:35:11,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:35:11,088 INFO L225 Difference]: With dead ends: 15200 [2020-12-17 14:35:11,088 INFO L226 Difference]: Without dead ends: 14930 [2020-12-17 14:35:11,089 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=623, Invalid=1927, Unknown=0, NotChecked=0, Total=2550 [2020-12-17 14:35:11,089 INFO L78 Accepts]: Start accepts. Automaton has 14930 states. Word has length 111 [2020-12-17 14:35:11,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:35:11,089 INFO L481 AbstractCegarLoop]: Abstraction has 14930 states. [2020-12-17 14:35:11,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:35:11,089 INFO L276 IsEmpty]: Start isEmpty. Operand 14930 states. [2020-12-17 14:35:11,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-17 14:35:11,109 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:35:11,109 INFO L504 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:35:11,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139,135 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:35:11,310 INFO L429 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:35:11,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:35:11,311 INFO L82 PathProgramCache]: Analyzing trace with hash 873815142, now seen corresponding path program 132 times [2020-12-17 14:35:11,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:35:11,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084516483] [2020-12-17 14:35:11,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:35:11,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:35:11,840 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:35:11,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084516483] [2020-12-17 14:35:11,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667631757] [2020-12-17 14:35:11,841 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:35:11,968 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-12-17 14:35:11,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:35:11,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-17 14:35:11,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:35:12,022 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:35:12,050 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:35:12,086 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:35:12,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:35:12,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-12-17 14:35:12,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357864714] [2020-12-17 14:35:12,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-17 14:35:12,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:35:12,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-17 14:35:12,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2020-12-17 14:35:12,089 INFO L87 Difference]: Start difference. First operand 14930 states. Second operand has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:35:14,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:35:14,117 INFO L93 Difference]: Finished difference Result 15250 states and 33430 transitions. [2020-12-17 14:35:14,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-12-17 14:35:14,119 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-12-17 14:35:14,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:35:14,144 INFO L225 Difference]: With dead ends: 15250 [2020-12-17 14:35:14,144 INFO L226 Difference]: Without dead ends: 14980 [2020-12-17 14:35:14,145 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 628 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=649, Invalid=2107, Unknown=0, NotChecked=0, Total=2756 [2020-12-17 14:35:14,145 INFO L78 Accepts]: Start accepts. Automaton has 14980 states. Word has length 111 [2020-12-17 14:35:14,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:35:14,145 INFO L481 AbstractCegarLoop]: Abstraction has 14980 states. [2020-12-17 14:35:14,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:35:14,146 INFO L276 IsEmpty]: Start isEmpty. Operand 14980 states. [2020-12-17 14:35:14,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-17 14:35:14,163 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:35:14,164 INFO L504 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:35:14,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,136 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:35:14,366 INFO L429 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:35:14,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:35:14,367 INFO L82 PathProgramCache]: Analyzing trace with hash 701129364, now seen corresponding path program 133 times [2020-12-17 14:35:14,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:35:14,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701913758] [2020-12-17 14:35:14,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:35:14,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:35:14,886 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:35:14,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701913758] [2020-12-17 14:35:14,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060177161] [2020-12-17 14:35:14,887 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:35:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:35:14,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-17 14:35:14,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:35:15,016 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:35:15,031 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:35:15,032 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:35:15,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-12-17 14:35:15,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78954407] [2020-12-17 14:35:15,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-17 14:35:15,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:35:15,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-17 14:35:15,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2020-12-17 14:35:15,033 INFO L87 Difference]: Start difference. First operand 14980 states. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:35:16,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:35:16,655 INFO L93 Difference]: Finished difference Result 15300 states and 33530 transitions. [2020-12-17 14:35:16,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-12-17 14:35:16,655 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-12-17 14:35:16,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:35:16,673 INFO L225 Difference]: With dead ends: 15300 [2020-12-17 14:35:16,673 INFO L226 Difference]: Without dead ends: 15030 [2020-12-17 14:35:16,674 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=693, Invalid=2063, Unknown=0, NotChecked=0, Total=2756 [2020-12-17 14:35:16,674 INFO L78 Accepts]: Start accepts. Automaton has 15030 states. Word has length 111 [2020-12-17 14:35:16,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:35:16,674 INFO L481 AbstractCegarLoop]: Abstraction has 15030 states. [2020-12-17 14:35:16,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:35:16,674 INFO L276 IsEmpty]: Start isEmpty. Operand 15030 states. [2020-12-17 14:35:16,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-17 14:35:16,690 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:35:16,690 INFO L504 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:35:16,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,137 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:35:16,891 INFO L429 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:35:16,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:35:16,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1432166044, now seen corresponding path program 134 times [2020-12-17 14:35:16,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:35:16,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621232234] [2020-12-17 14:35:16,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:35:16,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:35:17,436 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:35:17,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621232234] [2020-12-17 14:35:17,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332044131] [2020-12-17 14:35:17,437 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:35:17,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 14:35:17,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:35:17,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-17 14:35:17,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:35:17,582 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:35:17,607 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:35:17,625 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:35:17,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:35:17,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-12-17 14:35:17,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484823414] [2020-12-17 14:35:17,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-17 14:35:17,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:35:17,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-17 14:35:17,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2020-12-17 14:35:17,626 INFO L87 Difference]: Start difference. First operand 15030 states. Second operand has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:35:19,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:35:19,919 INFO L93 Difference]: Finished difference Result 15350 states and 33630 transitions. [2020-12-17 14:35:19,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-12-17 14:35:19,920 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-12-17 14:35:19,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:35:19,936 INFO L225 Difference]: With dead ends: 15350 [2020-12-17 14:35:19,937 INFO L226 Difference]: Without dead ends: 15080 [2020-12-17 14:35:19,937 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=721, Invalid=2249, Unknown=0, NotChecked=0, Total=2970 [2020-12-17 14:35:19,937 INFO L78 Accepts]: Start accepts. Automaton has 15080 states. Word has length 111 [2020-12-17 14:35:19,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:35:19,937 INFO L481 AbstractCegarLoop]: Abstraction has 15080 states. [2020-12-17 14:35:19,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:35:19,937 INFO L276 IsEmpty]: Start isEmpty. Operand 15080 states. [2020-12-17 14:35:19,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-17 14:35:19,951 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:35:19,951 INFO L504 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:35:20,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable142 [2020-12-17 14:35:20,152 INFO L429 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:35:20,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:35:20,153 INFO L82 PathProgramCache]: Analyzing trace with hash 458434834, now seen corresponding path program 135 times [2020-12-17 14:35:20,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:35:20,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916873492] [2020-12-17 14:35:20,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:35:20,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:35:20,625 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:35:20,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916873492] [2020-12-17 14:35:20,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624200313] [2020-12-17 14:35:20,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:35:20,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2020-12-17 14:35:20,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:35:20,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-17 14:35:20,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:35:20,768 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:35:20,784 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:35:20,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:35:20,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-12-17 14:35:20,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973381398] [2020-12-17 14:35:20,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-17 14:35:20,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:35:20,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-17 14:35:20,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2020-12-17 14:35:20,786 INFO L87 Difference]: Start difference. First operand 15080 states. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:35:22,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:35:22,422 INFO L93 Difference]: Finished difference Result 15400 states and 33730 transitions. [2020-12-17 14:35:22,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-12-17 14:35:22,424 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-12-17 14:35:22,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:35:22,453 INFO L225 Difference]: With dead ends: 15400 [2020-12-17 14:35:22,453 INFO L226 Difference]: Without dead ends: 15130 [2020-12-17 14:35:22,454 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 773 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=779, Invalid=2191, Unknown=0, NotChecked=0, Total=2970 [2020-12-17 14:35:22,454 INFO L78 Accepts]: Start accepts. Automaton has 15130 states. Word has length 111 [2020-12-17 14:35:22,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:35:22,454 INFO L481 AbstractCegarLoop]: Abstraction has 15130 states. [2020-12-17 14:35:22,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:35:22,455 INFO L276 IsEmpty]: Start isEmpty. Operand 15130 states. [2020-12-17 14:35:22,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-17 14:35:22,477 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:35:22,477 INFO L504 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:35:22,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,139 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:35:22,678 INFO L429 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:35:22,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:35:22,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1680141282, now seen corresponding path program 136 times [2020-12-17 14:35:22,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:35:22,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135510301] [2020-12-17 14:35:22,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:35:22,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:35:23,192 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:35:23,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135510301] [2020-12-17 14:35:23,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893533665] [2020-12-17 14:35:23,193 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:35:23,291 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 14:35:23,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:35:23,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-17 14:35:23,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:35:23,338 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:35:23,365 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:35:23,380 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:35:23,381 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:35:23,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-12-17 14:35:23,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656750270] [2020-12-17 14:35:23,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-17 14:35:23,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:35:23,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-17 14:35:23,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2020-12-17 14:35:23,383 INFO L87 Difference]: Start difference. First operand 15130 states. Second operand has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:35:25,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:35:25,466 INFO L93 Difference]: Finished difference Result 15450 states and 33830 transitions. [2020-12-17 14:35:25,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-12-17 14:35:25,467 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-12-17 14:35:25,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:35:25,490 INFO L225 Difference]: With dead ends: 15450 [2020-12-17 14:35:25,491 INFO L226 Difference]: Without dead ends: 15180 [2020-12-17 14:35:25,491 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 802 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=809, Invalid=2383, Unknown=0, NotChecked=0, Total=3192 [2020-12-17 14:35:25,492 INFO L78 Accepts]: Start accepts. Automaton has 15180 states. Word has length 111 [2020-12-17 14:35:25,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:35:25,492 INFO L481 AbstractCegarLoop]: Abstraction has 15180 states. [2020-12-17 14:35:25,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:35:25,492 INFO L276 IsEmpty]: Start isEmpty. Operand 15180 states. [2020-12-17 14:35:25,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-17 14:35:25,512 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:35:25,513 INFO L504 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:35:25,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2020-12-17 14:35:25,714 INFO L429 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:35:25,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:35:25,714 INFO L82 PathProgramCache]: Analyzing trace with hash 590107920, now seen corresponding path program 137 times [2020-12-17 14:35:25,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:35:25,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90886904] [2020-12-17 14:35:25,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:35:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:35:26,390 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:35:26,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90886904] [2020-12-17 14:35:26,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973816222] [2020-12-17 14:35:26,391 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:35:26,496 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2020-12-17 14:35:26,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:35:26,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-17 14:35:26,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:35:26,534 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:35:26,548 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:35:26,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:35:26,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-12-17 14:35:26,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594852825] [2020-12-17 14:35:26,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-17 14:35:26,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:35:26,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-17 14:35:26,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2020-12-17 14:35:26,550 INFO L87 Difference]: Start difference. First operand 15180 states. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:35:28,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:35:28,493 INFO L93 Difference]: Finished difference Result 15500 states and 33930 transitions. [2020-12-17 14:35:28,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-12-17 14:35:28,494 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-12-17 14:35:28,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:35:28,528 INFO L225 Difference]: With dead ends: 15500 [2020-12-17 14:35:28,529 INFO L226 Difference]: Without dead ends: 15230 [2020-12-17 14:35:28,529 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=881, Invalid=2311, Unknown=0, NotChecked=0, Total=3192 [2020-12-17 14:35:28,529 INFO L78 Accepts]: Start accepts. Automaton has 15230 states. Word has length 111 [2020-12-17 14:35:28,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:35:28,530 INFO L481 AbstractCegarLoop]: Abstraction has 15230 states. [2020-12-17 14:35:28,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:35:28,530 INFO L276 IsEmpty]: Start isEmpty. Operand 15230 states. [2020-12-17 14:35:28,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-17 14:35:28,559 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:35:28,559 INFO L504 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:35:28,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145,141 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:35:28,773 INFO L429 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:35:28,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:35:28,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1509710816, now seen corresponding path program 138 times [2020-12-17 14:35:28,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:35:28,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634664091] [2020-12-17 14:35:28,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:35:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:35:29,312 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:35:29,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634664091] [2020-12-17 14:35:29,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886445198] [2020-12-17 14:35:29,313 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:35:29,422 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-12-17 14:35:29,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:35:29,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-17 14:35:29,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:35:29,477 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:35:29,507 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:35:29,522 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:35:29,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:35:29,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-12-17 14:35:29,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715004928] [2020-12-17 14:35:29,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-17 14:35:29,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:35:29,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-17 14:35:29,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2020-12-17 14:35:29,525 INFO L87 Difference]: Start difference. First operand 15230 states. Second operand has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:35:31,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:35:31,904 INFO L93 Difference]: Finished difference Result 15710 states and 34430 transitions. [2020-12-17 14:35:31,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-12-17 14:35:31,906 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-12-17 14:35:31,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:35:31,935 INFO L225 Difference]: With dead ends: 15710 [2020-12-17 14:35:31,935 INFO L226 Difference]: Without dead ends: 15410 [2020-12-17 14:35:31,936 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 895 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=913, Invalid=2509, Unknown=0, NotChecked=0, Total=3422 [2020-12-17 14:35:31,936 INFO L78 Accepts]: Start accepts. Automaton has 15410 states. Word has length 111 [2020-12-17 14:35:31,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:35:31,936 INFO L481 AbstractCegarLoop]: Abstraction has 15410 states. [2020-12-17 14:35:31,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:35:31,937 INFO L276 IsEmpty]: Start isEmpty. Operand 15410 states. [2020-12-17 14:35:31,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-17 14:35:31,959 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:35:31,959 INFO L504 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:35:32,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2020-12-17 14:35:32,160 INFO L429 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:35:32,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:35:32,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1861786734, now seen corresponding path program 139 times [2020-12-17 14:35:32,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:35:32,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499113163] [2020-12-17 14:35:32,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:35:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:35:32,982 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:35:32,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499113163] [2020-12-17 14:35:32,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805892690] [2020-12-17 14:35:32,983 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:35:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:35:33,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-17 14:35:33,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:35:33,168 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:35:33,199 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:35:33,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:35:33,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-12-17 14:35:33,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430227307] [2020-12-17 14:35:33,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-17 14:35:33,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:35:33,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-17 14:35:33,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2020-12-17 14:35:33,201 INFO L87 Difference]: Start difference. First operand 15410 states. Second operand has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:35:35,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:35:35,099 INFO L93 Difference]: Finished difference Result 16882 states and 37734 transitions. [2020-12-17 14:35:35,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-12-17 14:35:35,100 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-12-17 14:35:35,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:35:35,121 INFO L225 Difference]: With dead ends: 16882 [2020-12-17 14:35:35,121 INFO L226 Difference]: Without dead ends: 16597 [2020-12-17 14:35:35,122 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 956 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1000, Invalid=2422, Unknown=0, NotChecked=0, Total=3422 [2020-12-17 14:35:35,122 INFO L78 Accepts]: Start accepts. Automaton has 16597 states. Word has length 111 [2020-12-17 14:35:35,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:35:35,122 INFO L481 AbstractCegarLoop]: Abstraction has 16597 states. [2020-12-17 14:35:35,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 5.045454545454546) internal successors, (111), 22 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:35:35,123 INFO L276 IsEmpty]: Start isEmpty. Operand 16597 states. [2020-12-17 14:35:35,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-17 14:35:35,139 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:35:35,139 INFO L504 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:35:35,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2020-12-17 14:35:35,339 INFO L429 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:35:35,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:35:35,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1858813504, now seen corresponding path program 140 times [2020-12-17 14:35:35,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:35:35,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357311444] [2020-12-17 14:35:35,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:35:35,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:35:35,815 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:35:35,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357311444] [2020-12-17 14:35:35,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010205325] [2020-12-17 14:35:35,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:35:35,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 14:35:35,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:35:35,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-17 14:35:35,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:35:35,969 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:35:35,999 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:35:36,014 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:35:36,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:35:36,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-12-17 14:35:36,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589686365] [2020-12-17 14:35:36,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-17 14:35:36,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:35:36,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-17 14:35:36,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2020-12-17 14:35:36,016 INFO L87 Difference]: Start difference. First operand 16597 states. Second operand has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:35:38,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:35:38,192 INFO L93 Difference]: Finished difference Result 16149 states and 35531 transitions. [2020-12-17 14:35:38,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-12-17 14:35:38,193 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2020-12-17 14:35:38,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:35:38,211 INFO L225 Difference]: With dead ends: 16149 [2020-12-17 14:35:38,211 INFO L226 Difference]: Without dead ends: 15580 [2020-12-17 14:35:38,211 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 992 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1036, Invalid=2624, Unknown=0, NotChecked=0, Total=3660 [2020-12-17 14:35:38,211 INFO L78 Accepts]: Start accepts. Automaton has 15580 states. Word has length 111 [2020-12-17 14:35:38,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:35:38,212 INFO L481 AbstractCegarLoop]: Abstraction has 15580 states. [2020-12-17 14:35:38,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.913043478260869) internal successors, (113), 23 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:35:38,212 INFO L276 IsEmpty]: Start isEmpty. Operand 15580 states. [2020-12-17 14:35:38,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-17 14:35:38,228 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:35:38,228 INFO L504 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:35:38,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148,144 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:35:38,429 INFO L429 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:35:38,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:35:38,430 INFO L82 PathProgramCache]: Analyzing trace with hash 2040084432, now seen corresponding path program 141 times [2020-12-17 14:35:38,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:35:38,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599117438] [2020-12-17 14:35:38,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:35:38,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:35:39,209 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2020-12-17 14:35:39,268 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:35:39,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599117438] [2020-12-17 14:35:39,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95321987] [2020-12-17 14:35:39,269 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:35:39,381 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-12-17 14:35:39,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:35:39,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-17 14:35:39,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:35:39,405 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:35:39,430 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:35:39,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:35:39,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2020-12-17 14:35:39,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585805150] [2020-12-17 14:35:39,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-17 14:35:39,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:35:39,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-17 14:35:39,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2020-12-17 14:35:39,432 INFO L87 Difference]: Start difference. First operand 15580 states. Second operand has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:35:40,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:35:40,671 INFO L93 Difference]: Finished difference Result 15900 states and 34880 transitions. [2020-12-17 14:35:40,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-17 14:35:40,673 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-12-17 14:35:40,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:35:40,699 INFO L225 Difference]: With dead ends: 15900 [2020-12-17 14:35:40,700 INFO L226 Difference]: Without dead ends: 15630 [2020-12-17 14:35:40,700 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=512, Invalid=1380, Unknown=0, NotChecked=0, Total=1892 [2020-12-17 14:35:40,700 INFO L78 Accepts]: Start accepts. Automaton has 15630 states. Word has length 116 [2020-12-17 14:35:40,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:35:40,700 INFO L481 AbstractCegarLoop]: Abstraction has 15630 states. [2020-12-17 14:35:40,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:35:40,700 INFO L276 IsEmpty]: Start isEmpty. Operand 15630 states. [2020-12-17 14:35:40,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-17 14:35:40,724 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:35:40,725 INFO L504 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:35:40,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable149 [2020-12-17 14:35:40,926 INFO L429 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:35:40,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:35:40,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1163796130, now seen corresponding path program 142 times [2020-12-17 14:35:40,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:35:40,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713023916] [2020-12-17 14:35:40,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:35:40,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:35:41,603 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:35:41,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713023916] [2020-12-17 14:35:41,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210324721] [2020-12-17 14:35:41,604 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:35:41,709 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 14:35:41,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:35:41,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-17 14:35:41,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:35:41,762 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:35:41,785 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:35:41,807 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:35:41,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:35:41,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-12-17 14:35:41,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735991126] [2020-12-17 14:35:41,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-17 14:35:41,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:35:41,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-17 14:35:41,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2020-12-17 14:35:41,809 INFO L87 Difference]: Start difference. First operand 15630 states. Second operand has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:35:43,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:35:43,673 INFO L93 Difference]: Finished difference Result 15950 states and 34980 transitions. [2020-12-17 14:35:43,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-12-17 14:35:43,674 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-12-17 14:35:43,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:35:43,697 INFO L225 Difference]: With dead ends: 15950 [2020-12-17 14:35:43,697 INFO L226 Difference]: Without dead ends: 15680 [2020-12-17 14:35:43,697 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=575, Invalid=1681, Unknown=0, NotChecked=0, Total=2256 [2020-12-17 14:35:43,697 INFO L78 Accepts]: Start accepts. Automaton has 15680 states. Word has length 116 [2020-12-17 14:35:43,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:35:43,698 INFO L481 AbstractCegarLoop]: Abstraction has 15680 states. [2020-12-17 14:35:43,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:35:43,698 INFO L276 IsEmpty]: Start isEmpty. Operand 15680 states. [2020-12-17 14:35:43,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-17 14:35:43,718 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:35:43,718 INFO L504 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:35:43,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,146 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:35:43,919 INFO L429 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:35:43,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:35:43,919 INFO L82 PathProgramCache]: Analyzing trace with hash -995490116, now seen corresponding path program 143 times [2020-12-17 14:35:43,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:35:43,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357471059] [2020-12-17 14:35:43,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:35:43,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:35:44,591 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:35:44,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357471059] [2020-12-17 14:35:44,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653619377] [2020-12-17 14:35:44,592 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:35:44,700 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2020-12-17 14:35:44,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:35:44,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-17 14:35:44,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:35:44,731 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:35:44,754 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:35:44,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:35:44,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2020-12-17 14:35:44,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519562587] [2020-12-17 14:35:44,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-17 14:35:44,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:35:44,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-17 14:35:44,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2020-12-17 14:35:44,756 INFO L87 Difference]: Start difference. First operand 15680 states. Second operand has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:35:45,355 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-12-17 14:35:46,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:35:46,130 INFO L93 Difference]: Finished difference Result 16000 states and 35080 transitions. [2020-12-17 14:35:46,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-12-17 14:35:46,132 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-12-17 14:35:46,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:35:46,163 INFO L225 Difference]: With dead ends: 16000 [2020-12-17 14:35:46,163 INFO L226 Difference]: Without dead ends: 15730 [2020-12-17 14:35:46,164 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=519, Invalid=1551, Unknown=0, NotChecked=0, Total=2070 [2020-12-17 14:35:46,164 INFO L78 Accepts]: Start accepts. Automaton has 15730 states. Word has length 116 [2020-12-17 14:35:46,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:35:46,164 INFO L481 AbstractCegarLoop]: Abstraction has 15730 states. [2020-12-17 14:35:46,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:35:46,165 INFO L276 IsEmpty]: Start isEmpty. Operand 15730 states. [2020-12-17 14:35:46,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-17 14:35:46,187 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:35:46,187 INFO L504 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:35:46,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,147 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:35:46,390 INFO L429 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:35:46,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:35:46,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1529907828, now seen corresponding path program 144 times [2020-12-17 14:35:46,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:35:46,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088072755] [2020-12-17 14:35:46,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:35:46,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:35:47,075 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:35:47,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088072755] [2020-12-17 14:35:47,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579278182] [2020-12-17 14:35:47,076 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:35:47,189 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-12-17 14:35:47,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:35:47,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-17 14:35:47,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:35:47,241 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:35:47,270 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:35:47,292 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:35:47,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:35:47,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-12-17 14:35:47,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982643541] [2020-12-17 14:35:47,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-17 14:35:47,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:35:47,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-17 14:35:47,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2020-12-17 14:35:47,294 INFO L87 Difference]: Start difference. First operand 15730 states. Second operand has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:35:48,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:35:48,945 INFO L93 Difference]: Finished difference Result 16050 states and 35180 transitions. [2020-12-17 14:35:48,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-12-17 14:35:48,947 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-12-17 14:35:48,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:35:48,973 INFO L225 Difference]: With dead ends: 16050 [2020-12-17 14:35:48,973 INFO L226 Difference]: Without dead ends: 15780 [2020-12-17 14:35:48,974 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=590, Invalid=1860, Unknown=0, NotChecked=0, Total=2450 [2020-12-17 14:35:48,974 INFO L78 Accepts]: Start accepts. Automaton has 15780 states. Word has length 116 [2020-12-17 14:35:48,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:35:48,975 INFO L481 AbstractCegarLoop]: Abstraction has 15780 states. [2020-12-17 14:35:48,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:35:48,975 INFO L276 IsEmpty]: Start isEmpty. Operand 15780 states. [2020-12-17 14:35:48,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-17 14:35:48,994 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:35:48,995 INFO L504 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:35:49,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,148 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:35:49,196 INFO L429 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:35:49,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:35:49,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1505102022, now seen corresponding path program 145 times [2020-12-17 14:35:49,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:35:49,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593686394] [2020-12-17 14:35:49,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:35:49,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:35:49,826 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:35:49,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593686394] [2020-12-17 14:35:49,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602718061] [2020-12-17 14:35:49,827 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:35:49,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:35:49,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-17 14:35:49,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:35:49,957 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:35:49,994 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:35:49,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:35:49,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2020-12-17 14:35:49,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080428500] [2020-12-17 14:35:49,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-17 14:35:49,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:35:49,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-17 14:35:49,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2020-12-17 14:35:49,997 INFO L87 Difference]: Start difference. First operand 15780 states. Second operand has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:35:51,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:35:51,432 INFO L93 Difference]: Finished difference Result 16100 states and 35280 transitions. [2020-12-17 14:35:51,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-17 14:35:51,434 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-12-17 14:35:51,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:35:51,458 INFO L225 Difference]: With dead ends: 16100 [2020-12-17 14:35:51,458 INFO L226 Difference]: Without dead ends: 15830 [2020-12-17 14:35:51,459 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=542, Invalid=1714, Unknown=0, NotChecked=0, Total=2256 [2020-12-17 14:35:51,459 INFO L78 Accepts]: Start accepts. Automaton has 15830 states. Word has length 116 [2020-12-17 14:35:51,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:35:51,459 INFO L481 AbstractCegarLoop]: Abstraction has 15830 states. [2020-12-17 14:35:51,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:35:51,459 INFO L276 IsEmpty]: Start isEmpty. Operand 15830 states. [2020-12-17 14:35:51,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-17 14:35:51,653 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:35:51,654 INFO L504 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:35:51,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,149 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:35:51,854 INFO L429 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:35:51,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:35:51,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1395348982, now seen corresponding path program 146 times [2020-12-17 14:35:51,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:35:51,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305069575] [2020-12-17 14:35:51,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:35:51,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:35:52,569 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:35:52,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305069575] [2020-12-17 14:35:52,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62671341] [2020-12-17 14:35:52,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:35:52,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 14:35:52,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:35:52,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-17 14:35:52,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:35:52,726 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:35:52,750 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:35:52,784 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:35:52,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:35:52,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-12-17 14:35:52,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361406252] [2020-12-17 14:35:52,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-17 14:35:52,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:35:52,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-17 14:35:52,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2020-12-17 14:35:52,788 INFO L87 Difference]: Start difference. First operand 15830 states. Second operand has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:35:54,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:35:54,618 INFO L93 Difference]: Finished difference Result 16150 states and 35380 transitions. [2020-12-17 14:35:54,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-12-17 14:35:54,619 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-12-17 14:35:54,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:35:54,644 INFO L225 Difference]: With dead ends: 16150 [2020-12-17 14:35:54,644 INFO L226 Difference]: Without dead ends: 15880 [2020-12-17 14:35:54,645 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=621, Invalid=2031, Unknown=0, NotChecked=0, Total=2652 [2020-12-17 14:35:54,645 INFO L78 Accepts]: Start accepts. Automaton has 15880 states. Word has length 116 [2020-12-17 14:35:54,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:35:54,646 INFO L481 AbstractCegarLoop]: Abstraction has 15880 states. [2020-12-17 14:35:54,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:35:54,646 INFO L276 IsEmpty]: Start isEmpty. Operand 15880 states. [2020-12-17 14:35:54,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-17 14:35:54,667 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:35:54,667 INFO L504 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:35:54,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable154 [2020-12-17 14:35:54,868 INFO L429 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:35:54,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:35:54,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1891185352, now seen corresponding path program 147 times [2020-12-17 14:35:54,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:35:54,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995978266] [2020-12-17 14:35:54,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:35:54,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:35:55,447 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:35:55,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995978266] [2020-12-17 14:35:55,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380415494] [2020-12-17 14:35:55,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:35:55,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-12-17 14:35:55,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:35:55,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-17 14:35:55,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:35:55,592 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:35:55,613 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:35:55,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:35:55,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2020-12-17 14:35:55,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104731549] [2020-12-17 14:35:55,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-17 14:35:55,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:35:55,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-17 14:35:55,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2020-12-17 14:35:55,616 INFO L87 Difference]: Start difference. First operand 15880 states. Second operand has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:35:57,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:35:57,162 INFO L93 Difference]: Finished difference Result 16200 states and 35480 transitions. [2020-12-17 14:35:57,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-17 14:35:57,164 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-12-17 14:35:57,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:35:57,185 INFO L225 Difference]: With dead ends: 16200 [2020-12-17 14:35:57,185 INFO L226 Difference]: Without dead ends: 15930 [2020-12-17 14:35:57,185 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=581, Invalid=1869, Unknown=0, NotChecked=0, Total=2450 [2020-12-17 14:35:57,185 INFO L78 Accepts]: Start accepts. Automaton has 15930 states. Word has length 116 [2020-12-17 14:35:57,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:35:57,186 INFO L481 AbstractCegarLoop]: Abstraction has 15930 states. [2020-12-17 14:35:57,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:35:57,186 INFO L276 IsEmpty]: Start isEmpty. Operand 15930 states. [2020-12-17 14:35:57,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-17 14:35:57,203 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:35:57,203 INFO L504 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:35:57,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 151 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2020-12-17 14:35:57,404 INFO L429 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:35:57,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:35:57,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1187265528, now seen corresponding path program 148 times [2020-12-17 14:35:57,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:35:57,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312804028] [2020-12-17 14:35:57,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:35:57,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:35:58,094 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:35:58,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312804028] [2020-12-17 14:35:58,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149408627] [2020-12-17 14:35:58,095 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:35:58,193 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 14:35:58,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:35:58,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-17 14:35:58,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:35:58,236 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:35:58,262 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:35:58,280 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:35:58,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:35:58,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-12-17 14:35:58,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035733058] [2020-12-17 14:35:58,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-17 14:35:58,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:35:58,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-17 14:35:58,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2020-12-17 14:35:58,282 INFO L87 Difference]: Start difference. First operand 15930 states. Second operand has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:36:00,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:36:00,217 INFO L93 Difference]: Finished difference Result 16250 states and 35580 transitions. [2020-12-17 14:36:00,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-12-17 14:36:00,219 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-12-17 14:36:00,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:36:00,244 INFO L225 Difference]: With dead ends: 16250 [2020-12-17 14:36:00,244 INFO L226 Difference]: Without dead ends: 15980 [2020-12-17 14:36:00,245 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=668, Invalid=2194, Unknown=0, NotChecked=0, Total=2862 [2020-12-17 14:36:00,245 INFO L78 Accepts]: Start accepts. Automaton has 15980 states. Word has length 116 [2020-12-17 14:36:00,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:36:00,245 INFO L481 AbstractCegarLoop]: Abstraction has 15980 states. [2020-12-17 14:36:00,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:36:00,245 INFO L276 IsEmpty]: Start isEmpty. Operand 15980 states. [2020-12-17 14:36:00,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-17 14:36:00,267 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:36:00,267 INFO L504 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:36:00,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2020-12-17 14:36:00,469 INFO L429 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:36:00,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:36:00,469 INFO L82 PathProgramCache]: Analyzing trace with hash -302421834, now seen corresponding path program 149 times [2020-12-17 14:36:00,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:36:00,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965059859] [2020-12-17 14:36:00,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:36:00,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:36:01,042 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:36:01,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965059859] [2020-12-17 14:36:01,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870978864] [2020-12-17 14:36:01,043 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:36:01,148 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2020-12-17 14:36:01,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:36:01,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-17 14:36:01,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:36:01,182 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:36:01,202 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:36:01,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:36:01,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2020-12-17 14:36:01,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608882796] [2020-12-17 14:36:01,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-17 14:36:01,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:36:01,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-17 14:36:01,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2020-12-17 14:36:01,204 INFO L87 Difference]: Start difference. First operand 15980 states. Second operand has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:36:02,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:36:02,872 INFO L93 Difference]: Finished difference Result 16300 states and 35680 transitions. [2020-12-17 14:36:02,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-12-17 14:36:02,874 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-12-17 14:36:02,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:36:02,898 INFO L225 Difference]: With dead ends: 16300 [2020-12-17 14:36:02,899 INFO L226 Difference]: Without dead ends: 16030 [2020-12-17 14:36:02,899 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=636, Invalid=2016, Unknown=0, NotChecked=0, Total=2652 [2020-12-17 14:36:02,900 INFO L78 Accepts]: Start accepts. Automaton has 16030 states. Word has length 116 [2020-12-17 14:36:02,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:36:02,900 INFO L481 AbstractCegarLoop]: Abstraction has 16030 states. [2020-12-17 14:36:02,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:36:02,900 INFO L276 IsEmpty]: Start isEmpty. Operand 16030 states. [2020-12-17 14:36:02,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-17 14:36:02,922 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:36:02,923 INFO L504 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:36:03,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 153 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2020-12-17 14:36:03,124 INFO L429 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:36:03,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:36:03,124 INFO L82 PathProgramCache]: Analyzing trace with hash -895638650, now seen corresponding path program 150 times [2020-12-17 14:36:03,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:36:03,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74329244] [2020-12-17 14:36:03,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:36:03,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:36:03,714 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:36:03,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74329244] [2020-12-17 14:36:03,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437215608] [2020-12-17 14:36:03,714 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:36:03,824 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-12-17 14:36:03,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:36:03,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-17 14:36:03,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:36:03,870 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:36:03,898 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:36:04,081 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:36:04,082 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:36:04,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-12-17 14:36:04,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607237435] [2020-12-17 14:36:04,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-17 14:36:04,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:36:04,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-17 14:36:04,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2020-12-17 14:36:04,083 INFO L87 Difference]: Start difference. First operand 16030 states. Second operand has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:36:06,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:36:06,127 INFO L93 Difference]: Finished difference Result 16350 states and 35780 transitions. [2020-12-17 14:36:06,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-12-17 14:36:06,128 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-12-17 14:36:06,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:36:06,149 INFO L225 Difference]: With dead ends: 16350 [2020-12-17 14:36:06,149 INFO L226 Difference]: Without dead ends: 16080 [2020-12-17 14:36:06,149 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=731, Invalid=2349, Unknown=0, NotChecked=0, Total=3080 [2020-12-17 14:36:06,149 INFO L78 Accepts]: Start accepts. Automaton has 16080 states. Word has length 116 [2020-12-17 14:36:06,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:36:06,150 INFO L481 AbstractCegarLoop]: Abstraction has 16080 states. [2020-12-17 14:36:06,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:36:06,150 INFO L276 IsEmpty]: Start isEmpty. Operand 16080 states. [2020-12-17 14:36:06,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-17 14:36:06,168 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:36:06,168 INFO L504 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:36:06,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 154 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2020-12-17 14:36:06,372 INFO L429 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:36:06,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:36:06,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1068324428, now seen corresponding path program 151 times [2020-12-17 14:36:06,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:36:06,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570634503] [2020-12-17 14:36:06,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:36:06,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:36:06,867 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:36:06,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570634503] [2020-12-17 14:36:06,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214996544] [2020-12-17 14:36:06,868 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:36:06,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:36:06,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-17 14:36:06,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:36:06,993 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:36:07,010 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:36:07,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:36:07,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2020-12-17 14:36:07,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836953917] [2020-12-17 14:36:07,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-17 14:36:07,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:36:07,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-17 14:36:07,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2020-12-17 14:36:07,012 INFO L87 Difference]: Start difference. First operand 16080 states. Second operand has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:36:08,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:36:08,708 INFO L93 Difference]: Finished difference Result 16400 states and 35880 transitions. [2020-12-17 14:36:08,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-12-17 14:36:08,710 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-12-17 14:36:08,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:36:08,730 INFO L225 Difference]: With dead ends: 16400 [2020-12-17 14:36:08,730 INFO L226 Difference]: Without dead ends: 16130 [2020-12-17 14:36:08,730 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=707, Invalid=2155, Unknown=0, NotChecked=0, Total=2862 [2020-12-17 14:36:08,730 INFO L78 Accepts]: Start accepts. Automaton has 16130 states. Word has length 116 [2020-12-17 14:36:08,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:36:08,731 INFO L481 AbstractCegarLoop]: Abstraction has 16130 states. [2020-12-17 14:36:08,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:36:08,731 INFO L276 IsEmpty]: Start isEmpty. Operand 16130 states. [2020-12-17 14:36:08,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-17 14:36:08,748 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:36:08,748 INFO L504 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:36:08,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 155 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable159 [2020-12-17 14:36:08,949 INFO L429 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:36:08,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:36:08,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1093347460, now seen corresponding path program 152 times [2020-12-17 14:36:08,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:36:08,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752417661] [2020-12-17 14:36:08,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:36:08,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:36:09,501 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:36:09,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752417661] [2020-12-17 14:36:09,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742249466] [2020-12-17 14:36:09,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:36:09,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 14:36:09,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:36:09,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-17 14:36:09,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:36:09,646 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:36:09,674 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:36:09,691 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:36:09,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:36:09,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-12-17 14:36:09,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551014895] [2020-12-17 14:36:09,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-17 14:36:09,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:36:09,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-17 14:36:09,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2020-12-17 14:36:09,692 INFO L87 Difference]: Start difference. First operand 16130 states. Second operand has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:36:11,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:36:11,974 INFO L93 Difference]: Finished difference Result 16450 states and 35980 transitions. [2020-12-17 14:36:11,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-12-17 14:36:11,975 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-12-17 14:36:11,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:36:11,998 INFO L225 Difference]: With dead ends: 16450 [2020-12-17 14:36:11,998 INFO L226 Difference]: Without dead ends: 16180 [2020-12-17 14:36:11,999 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=810, Invalid=2496, Unknown=0, NotChecked=0, Total=3306 [2020-12-17 14:36:11,999 INFO L78 Accepts]: Start accepts. Automaton has 16180 states. Word has length 116 [2020-12-17 14:36:11,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:36:11,999 INFO L481 AbstractCegarLoop]: Abstraction has 16180 states. [2020-12-17 14:36:11,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:36:11,999 INFO L276 IsEmpty]: Start isEmpty. Operand 16180 states. [2020-12-17 14:36:12,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-17 14:36:12,017 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:36:12,017 INFO L504 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:36:12,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160,156 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:36:12,218 INFO L429 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:36:12,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:36:12,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1311018958, now seen corresponding path program 153 times [2020-12-17 14:36:12,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:36:12,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835188766] [2020-12-17 14:36:12,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:36:12,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:36:12,727 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:36:12,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835188766] [2020-12-17 14:36:12,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451846284] [2020-12-17 14:36:12,727 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:36:12,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-12-17 14:36:12,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:36:12,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-17 14:36:12,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:36:12,877 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:36:12,893 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:36:12,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:36:12,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2020-12-17 14:36:12,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491938293] [2020-12-17 14:36:12,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-17 14:36:12,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:36:12,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-17 14:36:12,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2020-12-17 14:36:12,895 INFO L87 Difference]: Start difference. First operand 16180 states. Second operand has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:36:14,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:36:14,720 INFO L93 Difference]: Finished difference Result 16500 states and 36080 transitions. [2020-12-17 14:36:14,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-12-17 14:36:14,721 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-12-17 14:36:14,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:36:14,741 INFO L225 Difference]: With dead ends: 16500 [2020-12-17 14:36:14,741 INFO L226 Difference]: Without dead ends: 16230 [2020-12-17 14:36:14,742 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 746 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=794, Invalid=2286, Unknown=0, NotChecked=0, Total=3080 [2020-12-17 14:36:14,742 INFO L78 Accepts]: Start accepts. Automaton has 16230 states. Word has length 116 [2020-12-17 14:36:14,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:36:14,743 INFO L481 AbstractCegarLoop]: Abstraction has 16230 states. [2020-12-17 14:36:14,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:36:14,743 INFO L276 IsEmpty]: Start isEmpty. Operand 16230 states. [2020-12-17 14:36:14,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-17 14:36:14,759 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:36:14,759 INFO L504 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:36:14,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161,157 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:36:14,960 INFO L429 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:36:14,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:36:14,961 INFO L82 PathProgramCache]: Analyzing trace with hash -89312510, now seen corresponding path program 154 times [2020-12-17 14:36:14,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:36:14,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128022544] [2020-12-17 14:36:14,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:36:14,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:36:15,493 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:36:15,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128022544] [2020-12-17 14:36:15,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126354829] [2020-12-17 14:36:15,494 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:36:15,593 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 14:36:15,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:36:15,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-17 14:36:15,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:36:15,647 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:36:15,682 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:36:15,711 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:36:15,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:36:15,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-12-17 14:36:15,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842593824] [2020-12-17 14:36:15,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-17 14:36:15,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:36:15,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-17 14:36:15,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=459, Unknown=0, NotChecked=0, Total=552 [2020-12-17 14:36:15,714 INFO L87 Difference]: Start difference. First operand 16230 states. Second operand has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:36:17,321 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 11 [2020-12-17 14:36:18,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:36:18,645 INFO L93 Difference]: Finished difference Result 16550 states and 36180 transitions. [2020-12-17 14:36:18,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-12-17 14:36:18,647 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-12-17 14:36:18,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:36:18,680 INFO L225 Difference]: With dead ends: 16550 [2020-12-17 14:36:18,680 INFO L226 Difference]: Without dead ends: 16280 [2020-12-17 14:36:18,681 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 856 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=905, Invalid=2635, Unknown=0, NotChecked=0, Total=3540 [2020-12-17 14:36:18,681 INFO L78 Accepts]: Start accepts. Automaton has 16280 states. Word has length 116 [2020-12-17 14:36:18,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:36:18,682 INFO L481 AbstractCegarLoop]: Abstraction has 16280 states. [2020-12-17 14:36:18,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:36:18,682 INFO L276 IsEmpty]: Start isEmpty. Operand 16280 states. [2020-12-17 14:36:18,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-17 14:36:18,710 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:36:18,711 INFO L504 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:36:18,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,158 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:36:18,926 INFO L429 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:36:18,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:36:18,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1179345872, now seen corresponding path program 155 times [2020-12-17 14:36:18,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:36:18,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312528935] [2020-12-17 14:36:18,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:36:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:36:19,571 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:36:19,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312528935] [2020-12-17 14:36:19,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145986258] [2020-12-17 14:36:19,572 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:36:19,679 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2020-12-17 14:36:19,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:36:19,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-17 14:36:19,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:36:19,737 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:36:19,763 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:36:19,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:36:19,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2020-12-17 14:36:19,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923584845] [2020-12-17 14:36:19,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-17 14:36:19,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:36:19,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-17 14:36:19,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2020-12-17 14:36:19,765 INFO L87 Difference]: Start difference. First operand 16280 states. Second operand has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:36:21,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:36:21,814 INFO L93 Difference]: Finished difference Result 16600 states and 36280 transitions. [2020-12-17 14:36:21,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-12-17 14:36:21,816 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-12-17 14:36:21,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:36:21,839 INFO L225 Difference]: With dead ends: 16600 [2020-12-17 14:36:21,839 INFO L226 Difference]: Without dead ends: 16330 [2020-12-17 14:36:21,840 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 829 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=897, Invalid=2409, Unknown=0, NotChecked=0, Total=3306 [2020-12-17 14:36:21,840 INFO L78 Accepts]: Start accepts. Automaton has 16330 states. Word has length 116 [2020-12-17 14:36:21,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:36:21,840 INFO L481 AbstractCegarLoop]: Abstraction has 16330 states. [2020-12-17 14:36:21,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:36:21,841 INFO L276 IsEmpty]: Start isEmpty. Operand 16330 states. [2020-12-17 14:36:21,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-17 14:36:21,862 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:36:21,862 INFO L504 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:36:22,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,159 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:36:22,077 INFO L429 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:36:22,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:36:22,078 INFO L82 PathProgramCache]: Analyzing trace with hash -259742976, now seen corresponding path program 156 times [2020-12-17 14:36:22,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:36:22,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607687628] [2020-12-17 14:36:22,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:36:22,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:36:22,587 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:36:22,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607687628] [2020-12-17 14:36:22,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571911866] [2020-12-17 14:36:22,588 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:36:22,695 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-12-17 14:36:22,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:36:22,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-17 14:36:22,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:36:22,752 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:36:22,779 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:36:22,800 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:36:22,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:36:22,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-12-17 14:36:22,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310678105] [2020-12-17 14:36:22,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-17 14:36:22,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:36:22,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-17 14:36:22,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2020-12-17 14:36:22,802 INFO L87 Difference]: Start difference. First operand 16330 states. Second operand has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:36:25,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:36:25,261 INFO L93 Difference]: Finished difference Result 16690 states and 36460 transitions. [2020-12-17 14:36:25,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-12-17 14:36:25,262 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-12-17 14:36:25,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:36:25,285 INFO L225 Difference]: With dead ends: 16690 [2020-12-17 14:36:25,285 INFO L226 Difference]: Without dead ends: 16420 [2020-12-17 14:36:25,286 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 946 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1016, Invalid=2766, Unknown=0, NotChecked=0, Total=3782 [2020-12-17 14:36:25,286 INFO L78 Accepts]: Start accepts. Automaton has 16420 states. Word has length 116 [2020-12-17 14:36:25,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:36:25,287 INFO L481 AbstractCegarLoop]: Abstraction has 16420 states. [2020-12-17 14:36:25,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:36:25,287 INFO L276 IsEmpty]: Start isEmpty. Operand 16420 states. [2020-12-17 14:36:25,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-17 14:36:25,312 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:36:25,312 INFO L504 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:36:25,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,160 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:36:25,526 INFO L429 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:36:25,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:36:25,526 INFO L82 PathProgramCache]: Analyzing trace with hash 92332942, now seen corresponding path program 157 times [2020-12-17 14:36:25,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:36:25,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169880818] [2020-12-17 14:36:25,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:36:25,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:36:26,011 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:36:26,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169880818] [2020-12-17 14:36:26,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894529123] [2020-12-17 14:36:26,011 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:36:26,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:36:26,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-17 14:36:26,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:36:26,143 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:36:26,158 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:36:26,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:36:26,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2020-12-17 14:36:26,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472537380] [2020-12-17 14:36:26,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-17 14:36:26,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:36:26,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-17 14:36:26,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2020-12-17 14:36:26,159 INFO L87 Difference]: Start difference. First operand 16420 states. Second operand has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:36:28,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:36:28,265 INFO L93 Difference]: Finished difference Result 17892 states and 39824 transitions. [2020-12-17 14:36:28,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-12-17 14:36:28,266 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-12-17 14:36:28,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:36:28,288 INFO L225 Difference]: With dead ends: 17892 [2020-12-17 14:36:28,288 INFO L226 Difference]: Without dead ends: 17622 [2020-12-17 14:36:28,288 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 915 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1017, Invalid=2523, Unknown=0, NotChecked=0, Total=3540 [2020-12-17 14:36:28,289 INFO L78 Accepts]: Start accepts. Automaton has 17622 states. Word has length 116 [2020-12-17 14:36:28,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:36:28,289 INFO L481 AbstractCegarLoop]: Abstraction has 17622 states. [2020-12-17 14:36:28,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.043478260869565) internal successors, (116), 23 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:36:28,289 INFO L276 IsEmpty]: Start isEmpty. Operand 17622 states. [2020-12-17 14:36:28,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-17 14:36:28,305 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:36:28,306 INFO L504 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:36:28,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,161 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:36:28,507 INFO L429 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:36:28,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:36:28,507 INFO L82 PathProgramCache]: Analyzing trace with hash 89359712, now seen corresponding path program 158 times [2020-12-17 14:36:28,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:36:28,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056120565] [2020-12-17 14:36:28,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:36:28,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:36:29,082 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:36:29,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056120565] [2020-12-17 14:36:29,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414029061] [2020-12-17 14:36:29,083 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:36:29,180 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 14:36:29,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:36:29,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-17 14:36:29,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:36:29,232 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:36:29,263 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:36:29,277 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:36:29,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:36:29,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 24 [2020-12-17 14:36:29,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935250926] [2020-12-17 14:36:29,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-17 14:36:29,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:36:29,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-17 14:36:29,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2020-12-17 14:36:29,279 INFO L87 Difference]: Start difference. First operand 17622 states. Second operand has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:36:32,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:36:32,019 INFO L93 Difference]: Finished difference Result 17174 states and 37666 transitions. [2020-12-17 14:36:32,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-12-17 14:36:32,020 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2020-12-17 14:36:32,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:36:32,041 INFO L225 Difference]: With dead ends: 17174 [2020-12-17 14:36:32,041 INFO L226 Difference]: Without dead ends: 16635 [2020-12-17 14:36:32,041 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1040 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1146, Invalid=2886, Unknown=0, NotChecked=0, Total=4032 [2020-12-17 14:36:32,041 INFO L78 Accepts]: Start accepts. Automaton has 16635 states. Word has length 116 [2020-12-17 14:36:32,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:36:32,042 INFO L481 AbstractCegarLoop]: Abstraction has 16635 states. [2020-12-17 14:36:32,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:36:32,042 INFO L276 IsEmpty]: Start isEmpty. Operand 16635 states. [2020-12-17 14:36:32,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-12-17 14:36:32,062 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:36:32,062 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:36:32,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166,162 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:36:32,276 INFO L429 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:36:32,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:36:32,276 INFO L82 PathProgramCache]: Analyzing trace with hash -747814239, now seen corresponding path program 159 times [2020-12-17 14:36:32,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:36:32,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121861576] [2020-12-17 14:36:32,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:36:32,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:36:32,992 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:36:32,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121861576] [2020-12-17 14:36:32,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572512535] [2020-12-17 14:36:32,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:36:33,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-12-17 14:36:33,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:36:33,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-17 14:36:33,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:36:33,180 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:36:33,206 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:36:33,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:36:33,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2020-12-17 14:36:33,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804362984] [2020-12-17 14:36:33,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-17 14:36:33,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:36:33,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-17 14:36:33,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2020-12-17 14:36:33,208 INFO L87 Difference]: Start difference. First operand 16635 states. Second operand has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:36:34,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:36:34,469 INFO L93 Difference]: Finished difference Result 16955 states and 37090 transitions. [2020-12-17 14:36:34,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-17 14:36:34,470 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-12-17 14:36:34,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:36:34,496 INFO L225 Difference]: With dead ends: 16955 [2020-12-17 14:36:34,497 INFO L226 Difference]: Without dead ends: 16685 [2020-12-17 14:36:34,497 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=599, Invalid=1471, Unknown=0, NotChecked=0, Total=2070 [2020-12-17 14:36:34,497 INFO L78 Accepts]: Start accepts. Automaton has 16685 states. Word has length 121 [2020-12-17 14:36:34,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:36:34,498 INFO L481 AbstractCegarLoop]: Abstraction has 16685 states. [2020-12-17 14:36:34,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:36:34,498 INFO L276 IsEmpty]: Start isEmpty. Operand 16685 states. [2020-12-17 14:36:34,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-12-17 14:36:34,519 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:36:34,520 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:36:34,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 163 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2020-12-17 14:36:34,721 INFO L429 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:36:34,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:36:34,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1449478899, now seen corresponding path program 160 times [2020-12-17 14:36:34,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:36:34,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583227616] [2020-12-17 14:36:34,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:36:34,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:36:35,642 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:36:35,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583227616] [2020-12-17 14:36:35,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830097984] [2020-12-17 14:36:35,643 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:36:35,741 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 14:36:35,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:36:35,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-17 14:36:35,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:36:35,785 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:36:35,851 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:36:35,875 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:36:35,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:36:35,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2020-12-17 14:36:35,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69336550] [2020-12-17 14:36:35,876 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-12-17 14:36:35,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:36:35,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-12-17 14:36:35,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2020-12-17 14:36:35,877 INFO L87 Difference]: Start difference. First operand 16685 states. Second operand has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:36:37,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:36:37,461 INFO L93 Difference]: Finished difference Result 17005 states and 37190 transitions. [2020-12-17 14:36:37,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-12-17 14:36:37,463 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-12-17 14:36:37,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:36:37,495 INFO L225 Difference]: With dead ends: 17005 [2020-12-17 14:36:37,495 INFO L226 Difference]: Without dead ends: 16735 [2020-12-17 14:36:37,496 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=624, Invalid=1728, Unknown=0, NotChecked=0, Total=2352 [2020-12-17 14:36:37,496 INFO L78 Accepts]: Start accepts. Automaton has 16735 states. Word has length 121 [2020-12-17 14:36:37,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:36:37,497 INFO L481 AbstractCegarLoop]: Abstraction has 16735 states. [2020-12-17 14:36:37,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:36:37,497 INFO L276 IsEmpty]: Start isEmpty. Operand 16735 states. [2020-12-17 14:36:37,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-12-17 14:36:37,526 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:36:37,527 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:36:37,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 164 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2020-12-17 14:36:37,741 INFO L429 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:36:37,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:36:37,742 INFO L82 PathProgramCache]: Analyzing trace with hash -718710131, now seen corresponding path program 161 times [2020-12-17 14:36:37,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:36:37,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234142276] [2020-12-17 14:36:37,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:36:37,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:36:38,439 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:36:38,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234142276] [2020-12-17 14:36:38,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166586330] [2020-12-17 14:36:38,440 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:36:38,538 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2020-12-17 14:36:38,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:36:38,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-17 14:36:38,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:36:38,610 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:36:38,653 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:36:38,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:36:38,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2020-12-17 14:36:38,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049923748] [2020-12-17 14:36:38,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-17 14:36:38,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:36:38,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-17 14:36:38,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2020-12-17 14:36:38,655 INFO L87 Difference]: Start difference. First operand 16735 states. Second operand has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:36:40,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:36:40,091 INFO L93 Difference]: Finished difference Result 17055 states and 37290 transitions. [2020-12-17 14:36:40,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-12-17 14:36:40,092 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-12-17 14:36:40,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:36:40,127 INFO L225 Difference]: With dead ends: 17055 [2020-12-17 14:36:40,128 INFO L226 Difference]: Without dead ends: 16785 [2020-12-17 14:36:40,128 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=610, Invalid=1742, Unknown=0, NotChecked=0, Total=2352 [2020-12-17 14:36:40,129 INFO L78 Accepts]: Start accepts. Automaton has 16785 states. Word has length 121 [2020-12-17 14:36:40,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:36:40,129 INFO L481 AbstractCegarLoop]: Abstraction has 16785 states. [2020-12-17 14:36:40,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:36:40,129 INFO L276 IsEmpty]: Start isEmpty. Operand 16785 states. [2020-12-17 14:36:40,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-12-17 14:36:40,186 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:36:40,186 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:36:40,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 165 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2020-12-17 14:36:40,401 INFO L429 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:36:40,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:36:40,402 INFO L82 PathProgramCache]: Analyzing trace with hash -911309475, now seen corresponding path program 162 times [2020-12-17 14:36:40,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:36:40,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350871529] [2020-12-17 14:36:40,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:36:40,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:36:41,097 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 3 [2020-12-17 14:36:41,639 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2020-12-17 14:36:42,167 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:36:42,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350871529] [2020-12-17 14:36:42,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39697169] [2020-12-17 14:36:42,168 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:36:42,262 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-12-17 14:36:42,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:36:42,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-17 14:36:42,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:36:42,304 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:36:42,379 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:36:42,414 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:36:42,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:36:42,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2020-12-17 14:36:42,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327738953] [2020-12-17 14:36:42,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-12-17 14:36:42,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:36:42,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-12-17 14:36:42,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650 [2020-12-17 14:36:42,417 INFO L87 Difference]: Start difference. First operand 16785 states. Second operand has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:36:42,835 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 11 [2020-12-17 14:36:43,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:36:43,960 INFO L93 Difference]: Finished difference Result 17155 states and 37490 transitions. [2020-12-17 14:36:43,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-12-17 14:36:43,961 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-12-17 14:36:43,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:36:43,985 INFO L225 Difference]: With dead ends: 17155 [2020-12-17 14:36:43,986 INFO L226 Difference]: Without dead ends: 16885 [2020-12-17 14:36:43,986 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=665, Invalid=1987, Unknown=0, NotChecked=0, Total=2652 [2020-12-17 14:36:43,986 INFO L78 Accepts]: Start accepts. Automaton has 16885 states. Word has length 121 [2020-12-17 14:36:43,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:36:43,987 INFO L481 AbstractCegarLoop]: Abstraction has 16885 states. [2020-12-17 14:36:43,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:36:43,987 INFO L276 IsEmpty]: Start isEmpty. Operand 16885 states. [2020-12-17 14:36:44,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-12-17 14:36:44,011 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:36:44,011 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:36:44,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170,166 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:36:44,225 INFO L429 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:36:44,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:36:44,226 INFO L82 PathProgramCache]: Analyzing trace with hash 741164427, now seen corresponding path program 163 times [2020-12-17 14:36:44,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:36:44,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777231446] [2020-12-17 14:36:44,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:36:44,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:36:45,088 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:36:45,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777231446] [2020-12-17 14:36:45,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283822864] [2020-12-17 14:36:45,089 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:36:45,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:36:45,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-17 14:36:45,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:36:45,262 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:36:45,284 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:36:45,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:36:45,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2020-12-17 14:36:45,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792589091] [2020-12-17 14:36:45,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-17 14:36:45,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:36:45,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-17 14:36:45,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2020-12-17 14:36:45,286 INFO L87 Difference]: Start difference. First operand 16885 states. Second operand has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:36:46,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:36:46,679 INFO L93 Difference]: Finished difference Result 17205 states and 37590 transitions. [2020-12-17 14:36:46,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-17 14:36:46,681 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-12-17 14:36:46,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:36:46,702 INFO L225 Difference]: With dead ends: 17205 [2020-12-17 14:36:46,702 INFO L226 Difference]: Without dead ends: 16935 [2020-12-17 14:36:46,703 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 558 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=663, Invalid=1989, Unknown=0, NotChecked=0, Total=2652 [2020-12-17 14:36:46,703 INFO L78 Accepts]: Start accepts. Automaton has 16935 states. Word has length 121 [2020-12-17 14:36:46,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:36:46,703 INFO L481 AbstractCegarLoop]: Abstraction has 16935 states. [2020-12-17 14:36:46,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:36:46,703 INFO L276 IsEmpty]: Start isEmpty. Operand 16935 states. [2020-12-17 14:36:46,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-12-17 14:36:46,723 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:36:46,723 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:36:46,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 167 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable171 [2020-12-17 14:36:46,924 INFO L429 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:36:46,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:36:46,925 INFO L82 PathProgramCache]: Analyzing trace with hash 206746715, now seen corresponding path program 164 times [2020-12-17 14:36:46,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:36:46,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616416972] [2020-12-17 14:36:46,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:36:46,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:36:47,912 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:36:47,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616416972] [2020-12-17 14:36:47,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243209761] [2020-12-17 14:36:47,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:36:48,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 14:36:48,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:36:48,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-17 14:36:48,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:36:48,076 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:36:48,162 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:36:48,187 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:36:48,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:36:48,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2020-12-17 14:36:48,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649406632] [2020-12-17 14:36:48,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-12-17 14:36:48,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:36:48,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-12-17 14:36:48,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2020-12-17 14:36:48,189 INFO L87 Difference]: Start difference. First operand 16935 states. Second operand has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:36:49,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:36:49,999 INFO L93 Difference]: Finished difference Result 17255 states and 37690 transitions. [2020-12-17 14:36:50,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-12-17 14:36:50,002 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-12-17 14:36:50,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:36:50,026 INFO L225 Difference]: With dead ends: 17255 [2020-12-17 14:36:50,026 INFO L226 Difference]: Without dead ends: 16985 [2020-12-17 14:36:50,027 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=686, Invalid=2176, Unknown=0, NotChecked=0, Total=2862 [2020-12-17 14:36:50,027 INFO L78 Accepts]: Start accepts. Automaton has 16985 states. Word has length 121 [2020-12-17 14:36:50,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:36:50,027 INFO L481 AbstractCegarLoop]: Abstraction has 16985 states. [2020-12-17 14:36:50,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:36:50,027 INFO L276 IsEmpty]: Start isEmpty. Operand 16985 states. [2020-12-17 14:36:50,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-12-17 14:36:50,046 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:36:50,046 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:36:50,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172,168 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:36:50,247 INFO L429 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:36:50,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:36:50,248 INFO L82 PathProgramCache]: Analyzing trace with hash 231552521, now seen corresponding path program 165 times [2020-12-17 14:36:50,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:36:50,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586392677] [2020-12-17 14:36:50,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:36:50,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:36:51,026 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:36:51,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586392677] [2020-12-17 14:36:51,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384922871] [2020-12-17 14:36:51,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:36:51,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-12-17 14:36:51,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:36:51,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-17 14:36:51,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:36:51,214 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:36:51,237 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:36:51,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:36:51,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2020-12-17 14:36:51,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727873931] [2020-12-17 14:36:51,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-17 14:36:51,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:36:51,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-17 14:36:51,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2020-12-17 14:36:51,239 INFO L87 Difference]: Start difference. First operand 16985 states. Second operand has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:36:52,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:36:52,904 INFO L93 Difference]: Finished difference Result 17305 states and 37790 transitions. [2020-12-17 14:36:52,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-12-17 14:36:52,905 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-12-17 14:36:52,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:36:52,931 INFO L225 Difference]: With dead ends: 17305 [2020-12-17 14:36:52,931 INFO L226 Difference]: Without dead ends: 17035 [2020-12-17 14:36:52,932 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=698, Invalid=2164, Unknown=0, NotChecked=0, Total=2862 [2020-12-17 14:36:52,932 INFO L78 Accepts]: Start accepts. Automaton has 17035 states. Word has length 121 [2020-12-17 14:36:52,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:36:52,933 INFO L481 AbstractCegarLoop]: Abstraction has 17035 states. [2020-12-17 14:36:52,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:36:52,933 INFO L276 IsEmpty]: Start isEmpty. Operand 17035 states. [2020-12-17 14:36:52,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-12-17 14:36:52,953 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:36:52,953 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:36:53,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,169 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:36:53,155 INFO L429 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:36:53,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:36:53,156 INFO L82 PathProgramCache]: Analyzing trace with hash 341305561, now seen corresponding path program 166 times [2020-12-17 14:36:53,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:36:53,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342842818] [2020-12-17 14:36:53,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:36:53,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:36:53,856 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:36:53,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342842818] [2020-12-17 14:36:53,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474300649] [2020-12-17 14:36:53,857 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:36:53,955 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 14:36:53,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:36:53,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-17 14:36:53,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:36:54,004 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:36:54,082 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:36:54,111 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:36:54,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:36:54,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2020-12-17 14:36:54,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323780459] [2020-12-17 14:36:54,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-12-17 14:36:54,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:36:54,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-12-17 14:36:54,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2020-12-17 14:36:54,113 INFO L87 Difference]: Start difference. First operand 17035 states. Second operand has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:36:56,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:36:56,003 INFO L93 Difference]: Finished difference Result 17355 states and 37890 transitions. [2020-12-17 14:36:56,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-12-17 14:36:56,005 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-12-17 14:36:56,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:36:56,029 INFO L225 Difference]: With dead ends: 17355 [2020-12-17 14:36:56,030 INFO L226 Difference]: Without dead ends: 17085 [2020-12-17 14:36:56,030 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 655 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=723, Invalid=2357, Unknown=0, NotChecked=0, Total=3080 [2020-12-17 14:36:56,030 INFO L78 Accepts]: Start accepts. Automaton has 17085 states. Word has length 121 [2020-12-17 14:36:56,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:36:56,030 INFO L481 AbstractCegarLoop]: Abstraction has 17085 states. [2020-12-17 14:36:56,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:36:56,031 INFO L276 IsEmpty]: Start isEmpty. Operand 17085 states. [2020-12-17 14:36:56,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-12-17 14:36:56,049 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:36:56,049 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:36:56,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,170 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:36:56,250 INFO L429 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:36:56,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:36:56,251 INFO L82 PathProgramCache]: Analyzing trace with hash -154530809, now seen corresponding path program 167 times [2020-12-17 14:36:56,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:36:56,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714966793] [2020-12-17 14:36:56,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:36:56,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:36:56,934 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:36:56,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714966793] [2020-12-17 14:36:56,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245755287] [2020-12-17 14:36:56,935 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:36:57,293 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2020-12-17 14:36:57,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:36:57,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-17 14:36:57,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:36:57,393 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:36:57,431 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:36:57,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:36:57,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2020-12-17 14:36:57,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93640079] [2020-12-17 14:36:57,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-17 14:36:57,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:36:57,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-17 14:36:57,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2020-12-17 14:36:57,434 INFO L87 Difference]: Start difference. First operand 17085 states. Second operand has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:36:59,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:36:59,264 INFO L93 Difference]: Finished difference Result 17405 states and 37990 transitions. [2020-12-17 14:36:59,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-12-17 14:36:59,265 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-12-17 14:36:59,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:36:59,299 INFO L225 Difference]: With dead ends: 17405 [2020-12-17 14:36:59,299 INFO L226 Difference]: Without dead ends: 17135 [2020-12-17 14:36:59,300 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 722 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=749, Invalid=2331, Unknown=0, NotChecked=0, Total=3080 [2020-12-17 14:36:59,300 INFO L78 Accepts]: Start accepts. Automaton has 17135 states. Word has length 121 [2020-12-17 14:36:59,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:36:59,300 INFO L481 AbstractCegarLoop]: Abstraction has 17135 states. [2020-12-17 14:36:59,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:36:59,301 INFO L276 IsEmpty]: Start isEmpty. Operand 17135 states. [2020-12-17 14:36:59,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-12-17 14:36:59,332 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:36:59,332 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:36:59,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 171 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable175 [2020-12-17 14:36:59,546 INFO L429 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:36:59,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:36:59,547 INFO L82 PathProgramCache]: Analyzing trace with hash 549389015, now seen corresponding path program 168 times [2020-12-17 14:36:59,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:36:59,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459847140] [2020-12-17 14:36:59,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:36:59,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:37:00,280 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:37:00,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459847140] [2020-12-17 14:37:00,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719995713] [2020-12-17 14:37:00,281 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:37:00,395 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-12-17 14:37:00,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:37:00,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-17 14:37:00,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:37:00,449 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:37:00,525 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:37:00,563 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:37:00,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:37:00,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2020-12-17 14:37:00,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499580976] [2020-12-17 14:37:00,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-12-17 14:37:00,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:37:00,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-12-17 14:37:00,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2020-12-17 14:37:00,565 INFO L87 Difference]: Start difference. First operand 17135 states. Second operand has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:37:03,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:37:03,038 INFO L93 Difference]: Finished difference Result 17455 states and 38090 transitions. [2020-12-17 14:37:03,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-12-17 14:37:03,040 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-12-17 14:37:03,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:37:03,076 INFO L225 Difference]: With dead ends: 17455 [2020-12-17 14:37:03,076 INFO L226 Difference]: Without dead ends: 17185 [2020-12-17 14:37:03,077 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=776, Invalid=2530, Unknown=0, NotChecked=0, Total=3306 [2020-12-17 14:37:03,077 INFO L78 Accepts]: Start accepts. Automaton has 17185 states. Word has length 121 [2020-12-17 14:37:03,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:37:03,078 INFO L481 AbstractCegarLoop]: Abstraction has 17185 states. [2020-12-17 14:37:03,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:37:03,078 INFO L276 IsEmpty]: Start isEmpty. Operand 17185 states. [2020-12-17 14:37:03,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-12-17 14:37:03,108 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:37:03,108 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:37:03,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176,172 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:37:03,321 INFO L429 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:37:03,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:37:03,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1434232709, now seen corresponding path program 169 times [2020-12-17 14:37:03,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:37:03,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634473469] [2020-12-17 14:37:03,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:37:03,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:37:03,950 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:37:03,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634473469] [2020-12-17 14:37:03,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910842725] [2020-12-17 14:37:03,951 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:37:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:37:04,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-17 14:37:04,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:37:04,126 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:37:04,154 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:37:04,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:37:04,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2020-12-17 14:37:04,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245583965] [2020-12-17 14:37:04,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-17 14:37:04,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:37:04,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-17 14:37:04,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2020-12-17 14:37:04,157 INFO L87 Difference]: Start difference. First operand 17185 states. Second operand has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:37:06,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:37:06,094 INFO L93 Difference]: Finished difference Result 17505 states and 38190 transitions. [2020-12-17 14:37:06,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-12-17 14:37:06,095 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-12-17 14:37:06,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:37:06,116 INFO L225 Difference]: With dead ends: 17505 [2020-12-17 14:37:06,117 INFO L226 Difference]: Without dead ends: 17235 [2020-12-17 14:37:06,117 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 813 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=816, Invalid=2490, Unknown=0, NotChecked=0, Total=3306 [2020-12-17 14:37:06,117 INFO L78 Accepts]: Start accepts. Automaton has 17235 states. Word has length 121 [2020-12-17 14:37:06,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:37:06,117 INFO L481 AbstractCegarLoop]: Abstraction has 17235 states. [2020-12-17 14:37:06,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:37:06,118 INFO L276 IsEmpty]: Start isEmpty. Operand 17235 states. [2020-12-17 14:37:06,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-12-17 14:37:06,135 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:37:06,135 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:37:06,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 173 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable177 [2020-12-17 14:37:06,336 INFO L429 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:37:06,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:37:06,337 INFO L82 PathProgramCache]: Analyzing trace with hash 841015893, now seen corresponding path program 170 times [2020-12-17 14:37:06,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:37:06,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093336129] [2020-12-17 14:37:06,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:37:06,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:37:06,951 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:37:06,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093336129] [2020-12-17 14:37:06,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074016724] [2020-12-17 14:37:06,952 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:37:07,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 14:37:07,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:37:07,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-17 14:37:07,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:37:07,097 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:37:07,170 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:37:07,189 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:37:07,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:37:07,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2020-12-17 14:37:07,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524492921] [2020-12-17 14:37:07,190 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-12-17 14:37:07,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:37:07,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-12-17 14:37:07,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2020-12-17 14:37:07,190 INFO L87 Difference]: Start difference. First operand 17235 states. Second operand has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:37:07,686 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2020-12-17 14:37:09,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:37:09,506 INFO L93 Difference]: Finished difference Result 17555 states and 38290 transitions. [2020-12-17 14:37:09,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-12-17 14:37:09,508 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-12-17 14:37:09,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:37:09,530 INFO L225 Difference]: With dead ends: 17555 [2020-12-17 14:37:09,530 INFO L226 Difference]: Without dead ends: 17285 [2020-12-17 14:37:09,530 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 839 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=845, Invalid=2695, Unknown=0, NotChecked=0, Total=3540 [2020-12-17 14:37:09,530 INFO L78 Accepts]: Start accepts. Automaton has 17285 states. Word has length 121 [2020-12-17 14:37:09,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:37:09,531 INFO L481 AbstractCegarLoop]: Abstraction has 17285 states. [2020-12-17 14:37:09,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:37:09,531 INFO L276 IsEmpty]: Start isEmpty. Operand 17285 states. [2020-12-17 14:37:09,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-12-17 14:37:09,549 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:37:09,549 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:37:09,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 174 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable178 [2020-12-17 14:37:09,750 INFO L429 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:37:09,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:37:09,750 INFO L82 PathProgramCache]: Analyzing trace with hash 668330115, now seen corresponding path program 171 times [2020-12-17 14:37:09,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:37:09,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770774187] [2020-12-17 14:37:09,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:37:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:37:10,309 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:37:10,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770774187] [2020-12-17 14:37:10,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697026650] [2020-12-17 14:37:10,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:37:10,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-12-17 14:37:10,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:37:10,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-17 14:37:10,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:37:10,489 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:37:10,509 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:37:10,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:37:10,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2020-12-17 14:37:10,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999386968] [2020-12-17 14:37:10,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-17 14:37:10,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:37:10,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-17 14:37:10,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2020-12-17 14:37:10,511 INFO L87 Difference]: Start difference. First operand 17285 states. Second operand has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:37:12,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:37:12,482 INFO L93 Difference]: Finished difference Result 17605 states and 38390 transitions. [2020-12-17 14:37:12,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-12-17 14:37:12,483 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-12-17 14:37:12,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:37:12,508 INFO L225 Difference]: With dead ends: 17605 [2020-12-17 14:37:12,508 INFO L226 Difference]: Without dead ends: 17335 [2020-12-17 14:37:12,509 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 908 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=899, Invalid=2641, Unknown=0, NotChecked=0, Total=3540 [2020-12-17 14:37:12,509 INFO L78 Accepts]: Start accepts. Automaton has 17335 states. Word has length 121 [2020-12-17 14:37:12,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:37:12,510 INFO L481 AbstractCegarLoop]: Abstraction has 17335 states. [2020-12-17 14:37:12,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:37:12,510 INFO L276 IsEmpty]: Start isEmpty. Operand 17335 states. [2020-12-17 14:37:12,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-12-17 14:37:12,533 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:37:12,533 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:37:12,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 175 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable179 [2020-12-17 14:37:12,734 INFO L429 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:37:12,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:37:12,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1464965293, now seen corresponding path program 172 times [2020-12-17 14:37:12,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:37:12,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336023405] [2020-12-17 14:37:12,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:37:12,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:37:13,560 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:37:13,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336023405] [2020-12-17 14:37:13,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846230736] [2020-12-17 14:37:13,561 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:37:13,662 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 14:37:13,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:37:13,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-17 14:37:13,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:37:13,724 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:37:13,801 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:37:13,833 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:37:13,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:37:13,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2020-12-17 14:37:13,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683541827] [2020-12-17 14:37:13,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-12-17 14:37:13,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:37:13,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-12-17 14:37:13,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2020-12-17 14:37:13,835 INFO L87 Difference]: Start difference. First operand 17335 states. Second operand has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:37:16,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:37:16,328 INFO L93 Difference]: Finished difference Result 17655 states and 38490 transitions. [2020-12-17 14:37:16,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-12-17 14:37:16,330 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-12-17 14:37:16,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:37:16,357 INFO L225 Difference]: With dead ends: 17655 [2020-12-17 14:37:16,358 INFO L226 Difference]: Without dead ends: 17385 [2020-12-17 14:37:16,358 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 937 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=930, Invalid=2852, Unknown=0, NotChecked=0, Total=3782 [2020-12-17 14:37:16,359 INFO L78 Accepts]: Start accepts. Automaton has 17385 states. Word has length 121 [2020-12-17 14:37:16,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:37:16,359 INFO L481 AbstractCegarLoop]: Abstraction has 17385 states. [2020-12-17 14:37:16,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:37:16,359 INFO L276 IsEmpty]: Start isEmpty. Operand 17385 states. [2020-12-17 14:37:16,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-12-17 14:37:16,385 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:37:16,385 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:37:16,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 176 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable180 [2020-12-17 14:37:16,600 INFO L429 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:37:16,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:37:16,601 INFO L82 PathProgramCache]: Analyzing trace with hash 425635585, now seen corresponding path program 173 times [2020-12-17 14:37:16,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:37:16,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484867347] [2020-12-17 14:37:16,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:37:16,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:37:17,365 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:37:17,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484867347] [2020-12-17 14:37:17,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528886232] [2020-12-17 14:37:17,367 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:37:17,602 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2020-12-17 14:37:17,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:37:17,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-17 14:37:17,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:37:17,720 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:37:17,754 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:37:17,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:37:17,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2020-12-17 14:37:17,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670253078] [2020-12-17 14:37:17,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-17 14:37:17,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:37:17,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-17 14:37:17,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2020-12-17 14:37:17,756 INFO L87 Difference]: Start difference. First operand 17385 states. Second operand has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:37:20,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:37:20,127 INFO L93 Difference]: Finished difference Result 17705 states and 38590 transitions. [2020-12-17 14:37:20,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-12-17 14:37:20,129 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-12-17 14:37:20,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:37:20,161 INFO L225 Difference]: With dead ends: 17705 [2020-12-17 14:37:20,161 INFO L226 Difference]: Without dead ends: 17435 [2020-12-17 14:37:20,162 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1007 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=998, Invalid=2784, Unknown=0, NotChecked=0, Total=3782 [2020-12-17 14:37:20,163 INFO L78 Accepts]: Start accepts. Automaton has 17435 states. Word has length 121 [2020-12-17 14:37:20,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:37:20,163 INFO L481 AbstractCegarLoop]: Abstraction has 17435 states. [2020-12-17 14:37:20,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:37:20,164 INFO L276 IsEmpty]: Start isEmpty. Operand 17435 states. [2020-12-17 14:37:20,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-12-17 14:37:20,192 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:37:20,192 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:37:20,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181,177 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:37:20,406 INFO L429 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:37:20,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:37:20,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1647342033, now seen corresponding path program 174 times [2020-12-17 14:37:20,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:37:20,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255810210] [2020-12-17 14:37:20,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:37:20,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:37:21,142 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:37:21,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255810210] [2020-12-17 14:37:21,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028853525] [2020-12-17 14:37:21,142 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:37:21,279 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-12-17 14:37:21,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:37:21,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-17 14:37:21,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:37:21,354 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:37:21,447 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:37:21,466 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:37:21,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:37:21,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2020-12-17 14:37:21,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256972290] [2020-12-17 14:37:21,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-12-17 14:37:21,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:37:21,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-12-17 14:37:21,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2020-12-17 14:37:21,469 INFO L87 Difference]: Start difference. First operand 17435 states. Second operand has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:37:24,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:37:24,183 INFO L93 Difference]: Finished difference Result 17755 states and 38690 transitions. [2020-12-17 14:37:24,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-12-17 14:37:24,185 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-12-17 14:37:24,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:37:24,208 INFO L225 Difference]: With dead ends: 17755 [2020-12-17 14:37:24,208 INFO L226 Difference]: Without dead ends: 17485 [2020-12-17 14:37:24,209 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1039 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1031, Invalid=3001, Unknown=0, NotChecked=0, Total=4032 [2020-12-17 14:37:24,209 INFO L78 Accepts]: Start accepts. Automaton has 17485 states. Word has length 121 [2020-12-17 14:37:24,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:37:24,209 INFO L481 AbstractCegarLoop]: Abstraction has 17485 states. [2020-12-17 14:37:24,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:37:24,210 INFO L276 IsEmpty]: Start isEmpty. Operand 17485 states. [2020-12-17 14:37:24,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-12-17 14:37:24,230 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:37:24,230 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:37:24,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 178 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable182 [2020-12-17 14:37:24,431 INFO L429 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:37:24,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:37:24,431 INFO L82 PathProgramCache]: Analyzing trace with hash 557308671, now seen corresponding path program 175 times [2020-12-17 14:37:24,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:37:24,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222643487] [2020-12-17 14:37:24,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:37:24,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:37:25,025 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:37:25,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222643487] [2020-12-17 14:37:25,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718566682] [2020-12-17 14:37:25,026 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:37:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:37:25,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-17 14:37:25,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:37:25,194 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:37:25,212 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:37:25,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:37:25,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2020-12-17 14:37:25,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632973159] [2020-12-17 14:37:25,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-17 14:37:25,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:37:25,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-17 14:37:25,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2020-12-17 14:37:25,214 INFO L87 Difference]: Start difference. First operand 17485 states. Second operand has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:37:27,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:37:27,346 INFO L93 Difference]: Finished difference Result 17805 states and 38790 transitions. [2020-12-17 14:37:27,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-12-17 14:37:27,348 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-12-17 14:37:27,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:37:27,370 INFO L225 Difference]: With dead ends: 17805 [2020-12-17 14:37:27,370 INFO L226 Difference]: Without dead ends: 17535 [2020-12-17 14:37:27,370 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1110 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1113, Invalid=2919, Unknown=0, NotChecked=0, Total=4032 [2020-12-17 14:37:27,370 INFO L78 Accepts]: Start accepts. Automaton has 17535 states. Word has length 121 [2020-12-17 14:37:27,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:37:27,371 INFO L481 AbstractCegarLoop]: Abstraction has 17535 states. [2020-12-17 14:37:27,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:37:27,371 INFO L276 IsEmpty]: Start isEmpty. Operand 17535 states. [2020-12-17 14:37:27,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-12-17 14:37:27,389 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:37:27,389 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:37:27,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183,179 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:37:27,590 INFO L429 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:37:27,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:37:27,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1476911567, now seen corresponding path program 176 times [2020-12-17 14:37:27,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:37:27,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119641795] [2020-12-17 14:37:27,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:37:27,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:37:28,126 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:37:28,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119641795] [2020-12-17 14:37:28,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424904489] [2020-12-17 14:37:28,126 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:37:28,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 14:37:28,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:37:28,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-17 14:37:28,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:37:28,270 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:37:28,363 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:37:28,381 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:37:28,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:37:28,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2020-12-17 14:37:28,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341752330] [2020-12-17 14:37:28,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-12-17 14:37:28,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:37:28,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-12-17 14:37:28,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2020-12-17 14:37:28,384 INFO L87 Difference]: Start difference. First operand 17535 states. Second operand has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:37:31,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:37:31,207 INFO L93 Difference]: Finished difference Result 17895 states and 38970 transitions. [2020-12-17 14:37:31,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-12-17 14:37:31,209 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-12-17 14:37:31,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:37:31,232 INFO L225 Difference]: With dead ends: 17895 [2020-12-17 14:37:31,232 INFO L226 Difference]: Without dead ends: 17625 [2020-12-17 14:37:31,232 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1145 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1148, Invalid=3142, Unknown=0, NotChecked=0, Total=4290 [2020-12-17 14:37:31,233 INFO L78 Accepts]: Start accepts. Automaton has 17625 states. Word has length 121 [2020-12-17 14:37:31,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:37:31,233 INFO L481 AbstractCegarLoop]: Abstraction has 17625 states. [2020-12-17 14:37:31,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:37:31,233 INFO L276 IsEmpty]: Start isEmpty. Operand 17625 states. [2020-12-17 14:37:31,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-12-17 14:37:31,252 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:37:31,252 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:37:31,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,180 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:37:31,453 INFO L429 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:37:31,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:37:31,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1828987485, now seen corresponding path program 177 times [2020-12-17 14:37:31,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:37:31,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799077668] [2020-12-17 14:37:31,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:37:31,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:37:32,026 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:37:32,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799077668] [2020-12-17 14:37:32,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20845795] [2020-12-17 14:37:32,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:37:32,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-12-17 14:37:32,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:37:32,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-17 14:37:32,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:37:32,215 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:37:32,232 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:37:32,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:37:32,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 25 [2020-12-17 14:37:32,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474644236] [2020-12-17 14:37:32,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-17 14:37:32,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:37:32,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-17 14:37:32,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2020-12-17 14:37:32,233 INFO L87 Difference]: Start difference. First operand 17625 states. Second operand has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:37:34,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:37:34,860 INFO L93 Difference]: Finished difference Result 19097 states and 42334 transitions. [2020-12-17 14:37:34,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-12-17 14:37:34,863 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-12-17 14:37:34,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:37:34,900 INFO L225 Difference]: With dead ends: 19097 [2020-12-17 14:37:34,900 INFO L226 Difference]: Without dead ends: 18827 [2020-12-17 14:37:34,901 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1216 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1245, Invalid=3045, Unknown=0, NotChecked=0, Total=4290 [2020-12-17 14:37:34,901 INFO L78 Accepts]: Start accepts. Automaton has 18827 states. Word has length 121 [2020-12-17 14:37:34,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:37:34,902 INFO L481 AbstractCegarLoop]: Abstraction has 18827 states. [2020-12-17 14:37:34,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.92) internal successors, (123), 25 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:37:34,902 INFO L276 IsEmpty]: Start isEmpty. Operand 18827 states. [2020-12-17 14:37:34,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-12-17 14:37:34,935 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:37:34,935 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:37:35,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185,181 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:37:35,150 INFO L429 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:37:35,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:37:35,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1826014255, now seen corresponding path program 178 times [2020-12-17 14:37:35,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:37:35,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955042723] [2020-12-17 14:37:35,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:37:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:37:35,604 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:37:35,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955042723] [2020-12-17 14:37:35,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258411264] [2020-12-17 14:37:35,607 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:37:35,695 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 14:37:35,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:37:35,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-17 14:37:35,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:37:35,738 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:37:35,776 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:37:35,801 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:37:35,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:37:35,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 26 [2020-12-17 14:37:35,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692111643] [2020-12-17 14:37:35,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-12-17 14:37:35,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:37:35,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-12-17 14:37:35,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2020-12-17 14:37:35,803 INFO L87 Difference]: Start difference. First operand 18827 states. Second operand has 26 states, 26 states have (on average 4.769230769230769) internal successors, (124), 26 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:37:38,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:37:38,192 INFO L93 Difference]: Finished difference Result 18760 states and 41116 transitions. [2020-12-17 14:37:38,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-12-17 14:37:38,194 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.769230769230769) internal successors, (124), 26 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2020-12-17 14:37:38,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:37:38,216 INFO L225 Difference]: With dead ends: 18760 [2020-12-17 14:37:38,216 INFO L226 Difference]: Without dead ends: 18105 [2020-12-17 14:37:38,216 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1372 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1326, Invalid=3644, Unknown=0, NotChecked=0, Total=4970 [2020-12-17 14:37:38,217 INFO L78 Accepts]: Start accepts. Automaton has 18105 states. Word has length 121 [2020-12-17 14:37:38,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:37:38,217 INFO L481 AbstractCegarLoop]: Abstraction has 18105 states. [2020-12-17 14:37:38,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.769230769230769) internal successors, (124), 26 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:37:38,217 INFO L276 IsEmpty]: Start isEmpty. Operand 18105 states. [2020-12-17 14:37:38,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-12-17 14:37:38,239 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:37:38,239 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:37:38,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186,182 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:37:38,453 INFO L429 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:37:38,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:37:38,454 INFO L82 PathProgramCache]: Analyzing trace with hash -367058495, now seen corresponding path program 179 times [2020-12-17 14:37:38,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:37:38,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19506877] [2020-12-17 14:37:38,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:37:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:37:39,255 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:37:39,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19506877] [2020-12-17 14:37:39,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436114493] [2020-12-17 14:37:39,255 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:37:39,337 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-12-17 14:37:39,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:37:39,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-17 14:37:39,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:37:39,380 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:37:39,437 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:37:39,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:37:39,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-12-17 14:37:39,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378359379] [2020-12-17 14:37:39,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-17 14:37:39,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:37:39,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-17 14:37:39,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2020-12-17 14:37:39,439 INFO L87 Difference]: Start difference. First operand 18105 states. Second operand has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:37:40,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:37:40,409 INFO L93 Difference]: Finished difference Result 18425 states and 40210 transitions. [2020-12-17 14:37:40,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-12-17 14:37:40,410 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-12-17 14:37:40,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:37:40,432 INFO L225 Difference]: With dead ends: 18425 [2020-12-17 14:37:40,433 INFO L226 Difference]: Without dead ends: 18155 [2020-12-17 14:37:40,433 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=616, Invalid=1640, Unknown=0, NotChecked=0, Total=2256 [2020-12-17 14:37:40,433 INFO L78 Accepts]: Start accepts. Automaton has 18155 states. Word has length 126 [2020-12-17 14:37:40,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:37:40,434 INFO L481 AbstractCegarLoop]: Abstraction has 18155 states. [2020-12-17 14:37:40,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:37:40,434 INFO L276 IsEmpty]: Start isEmpty. Operand 18155 states. [2020-12-17 14:37:40,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-12-17 14:37:40,455 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:37:40,455 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:37:40,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 183 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable187 [2020-12-17 14:37:40,668 INFO L429 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:37:40,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:37:40,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1830234643, now seen corresponding path program 180 times [2020-12-17 14:37:40,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:37:40,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019766179] [2020-12-17 14:37:40,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:37:40,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:37:41,668 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:37:41,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019766179] [2020-12-17 14:37:41,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545692722] [2020-12-17 14:37:41,669 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:37:41,775 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2020-12-17 14:37:41,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:37:41,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-17 14:37:41,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:37:41,817 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:37:41,838 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:37:41,864 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:37:41,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:37:41,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2020-12-17 14:37:41,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462783323] [2020-12-17 14:37:41,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-12-17 14:37:41,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:37:41,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-12-17 14:37:41,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2020-12-17 14:37:41,865 INFO L87 Difference]: Start difference. First operand 18155 states. Second operand has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:37:43,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:37:43,259 INFO L93 Difference]: Finished difference Result 18475 states and 40310 transitions. [2020-12-17 14:37:43,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-12-17 14:37:43,261 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-12-17 14:37:43,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:37:43,279 INFO L225 Difference]: With dead ends: 18475 [2020-12-17 14:37:43,280 INFO L226 Difference]: Without dead ends: 18205 [2020-12-17 14:37:43,280 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=683, Invalid=1969, Unknown=0, NotChecked=0, Total=2652 [2020-12-17 14:37:43,280 INFO L78 Accepts]: Start accepts. Automaton has 18205 states. Word has length 126 [2020-12-17 14:37:43,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:37:43,281 INFO L481 AbstractCegarLoop]: Abstraction has 18205 states. [2020-12-17 14:37:43,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:37:43,281 INFO L276 IsEmpty]: Start isEmpty. Operand 18205 states. [2020-12-17 14:37:43,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-12-17 14:37:43,303 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:37:43,303 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:37:43,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 184 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable188 [2020-12-17 14:37:43,518 INFO L429 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:37:43,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:37:43,519 INFO L82 PathProgramCache]: Analyzing trace with hash -337954387, now seen corresponding path program 181 times [2020-12-17 14:37:43,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:37:43,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175429977] [2020-12-17 14:37:43,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:37:43,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:37:44,146 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:37:44,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175429977] [2020-12-17 14:37:44,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196824681] [2020-12-17 14:37:44,146 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:37:44,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:37:44,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-17 14:37:44,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:37:44,266 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:37:44,291 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:37:44,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:37:44,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-12-17 14:37:44,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023620122] [2020-12-17 14:37:44,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-17 14:37:44,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:37:44,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-17 14:37:44,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2020-12-17 14:37:44,292 INFO L87 Difference]: Start difference. First operand 18205 states. Second operand has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:37:45,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:37:45,656 INFO L93 Difference]: Finished difference Result 18525 states and 40410 transitions. [2020-12-17 14:37:45,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-17 14:37:45,658 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-12-17 14:37:45,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:37:45,677 INFO L225 Difference]: With dead ends: 18525 [2020-12-17 14:37:45,677 INFO L226 Difference]: Without dead ends: 18255 [2020-12-17 14:37:45,677 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=621, Invalid=1829, Unknown=0, NotChecked=0, Total=2450 [2020-12-17 14:37:45,677 INFO L78 Accepts]: Start accepts. Automaton has 18255 states. Word has length 126 [2020-12-17 14:37:45,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:37:45,677 INFO L481 AbstractCegarLoop]: Abstraction has 18255 states. [2020-12-17 14:37:45,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:37:45,678 INFO L276 IsEmpty]: Start isEmpty. Operand 18255 states. [2020-12-17 14:37:45,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-12-17 14:37:45,693 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:37:45,693 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:37:45,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 185 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable189 [2020-12-17 14:37:45,894 INFO L429 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:37:45,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:37:45,895 INFO L82 PathProgramCache]: Analyzing trace with hash -530553731, now seen corresponding path program 182 times [2020-12-17 14:37:45,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:37:45,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026325258] [2020-12-17 14:37:45,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:37:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:37:46,559 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:37:46,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026325258] [2020-12-17 14:37:46,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711866354] [2020-12-17 14:37:46,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:37:46,655 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 14:37:46,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:37:46,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-17 14:37:46,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:37:46,697 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:37:46,719 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:37:46,745 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:37:46,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:37:46,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2020-12-17 14:37:46,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266896702] [2020-12-17 14:37:46,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-12-17 14:37:46,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:37:46,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-12-17 14:37:46,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2020-12-17 14:37:46,746 INFO L87 Difference]: Start difference. First operand 18255 states. Second operand has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:37:48,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:37:48,212 INFO L93 Difference]: Finished difference Result 18575 states and 40510 transitions. [2020-12-17 14:37:48,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-12-17 14:37:48,213 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-12-17 14:37:48,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:37:48,232 INFO L225 Difference]: With dead ends: 18575 [2020-12-17 14:37:48,232 INFO L226 Difference]: Without dead ends: 18305 [2020-12-17 14:37:48,232 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=696, Invalid=2166, Unknown=0, NotChecked=0, Total=2862 [2020-12-17 14:37:48,232 INFO L78 Accepts]: Start accepts. Automaton has 18305 states. Word has length 126 [2020-12-17 14:37:48,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:37:48,233 INFO L481 AbstractCegarLoop]: Abstraction has 18305 states. [2020-12-17 14:37:48,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:37:48,233 INFO L276 IsEmpty]: Start isEmpty. Operand 18305 states. [2020-12-17 14:37:48,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-12-17 14:37:48,249 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:37:48,249 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:37:48,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190,186 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:37:48,452 INFO L429 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:37:48,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:37:48,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1121920171, now seen corresponding path program 183 times [2020-12-17 14:37:48,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:37:48,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128967100] [2020-12-17 14:37:48,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:37:48,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:37:49,094 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:37:49,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128967100] [2020-12-17 14:37:49,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813930559] [2020-12-17 14:37:49,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:37:49,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2020-12-17 14:37:49,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:37:49,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-17 14:37:49,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:37:49,225 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:37:49,249 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:37:49,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:37:49,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-12-17 14:37:49,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90213757] [2020-12-17 14:37:49,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-17 14:37:49,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:37:49,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-17 14:37:49,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2020-12-17 14:37:49,250 INFO L87 Difference]: Start difference. First operand 18305 states. Second operand has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:37:50,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:37:50,610 INFO L93 Difference]: Finished difference Result 18625 states and 40610 transitions. [2020-12-17 14:37:50,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-17 14:37:50,612 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-12-17 14:37:50,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:37:50,630 INFO L225 Difference]: With dead ends: 18625 [2020-12-17 14:37:50,631 INFO L226 Difference]: Without dead ends: 18355 [2020-12-17 14:37:50,631 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=642, Invalid=2010, Unknown=0, NotChecked=0, Total=2652 [2020-12-17 14:37:50,631 INFO L78 Accepts]: Start accepts. Automaton has 18355 states. Word has length 126 [2020-12-17 14:37:50,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:37:50,632 INFO L481 AbstractCegarLoop]: Abstraction has 18355 states. [2020-12-17 14:37:50,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:37:50,632 INFO L276 IsEmpty]: Start isEmpty. Operand 18355 states. [2020-12-17 14:37:50,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-12-17 14:37:50,810 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:37:50,810 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:37:51,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191,187 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:37:51,023 INFO L429 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:37:51,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:37:51,024 INFO L82 PathProgramCache]: Analyzing trace with hash 587502459, now seen corresponding path program 184 times [2020-12-17 14:37:51,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:37:51,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727845913] [2020-12-17 14:37:51,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:37:51,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:37:51,639 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:37:51,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727845913] [2020-12-17 14:37:51,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765850869] [2020-12-17 14:37:51,639 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:37:51,728 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 14:37:51,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:37:51,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-17 14:37:51,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:37:51,775 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:37:51,810 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:37:51,886 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:37:51,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:37:51,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2020-12-17 14:37:51,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222358182] [2020-12-17 14:37:51,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-12-17 14:37:51,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:37:51,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-12-17 14:37:51,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2020-12-17 14:37:51,888 INFO L87 Difference]: Start difference. First operand 18355 states. Second operand has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:37:53,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:37:53,498 INFO L93 Difference]: Finished difference Result 18675 states and 40710 transitions. [2020-12-17 14:37:53,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-12-17 14:37:53,499 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-12-17 14:37:53,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:37:53,524 INFO L225 Difference]: With dead ends: 18675 [2020-12-17 14:37:53,524 INFO L226 Difference]: Without dead ends: 18405 [2020-12-17 14:37:53,525 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=725, Invalid=2355, Unknown=0, NotChecked=0, Total=3080 [2020-12-17 14:37:53,525 INFO L78 Accepts]: Start accepts. Automaton has 18405 states. Word has length 126 [2020-12-17 14:37:53,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:37:53,526 INFO L481 AbstractCegarLoop]: Abstraction has 18405 states. [2020-12-17 14:37:53,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:37:53,526 INFO L276 IsEmpty]: Start isEmpty. Operand 18405 states. [2020-12-17 14:37:53,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-12-17 14:37:53,550 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:37:53,550 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:37:53,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192,188 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:37:53,763 INFO L429 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:37:53,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:37:53,764 INFO L82 PathProgramCache]: Analyzing trace with hash 612308265, now seen corresponding path program 185 times [2020-12-17 14:37:53,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:37:53,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641054690] [2020-12-17 14:37:53,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:37:53,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:37:54,319 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:37:54,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641054690] [2020-12-17 14:37:54,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808610816] [2020-12-17 14:37:54,319 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:37:54,409 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-12-17 14:37:54,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:37:54,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-17 14:37:54,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:37:54,445 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:37:54,482 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:37:54,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:37:54,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-12-17 14:37:54,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879899880] [2020-12-17 14:37:54,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-17 14:37:54,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:37:54,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-17 14:37:54,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2020-12-17 14:37:54,484 INFO L87 Difference]: Start difference. First operand 18405 states. Second operand has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:37:55,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:37:55,840 INFO L93 Difference]: Finished difference Result 18725 states and 40810 transitions. [2020-12-17 14:37:55,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-12-17 14:37:55,841 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-12-17 14:37:55,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:37:55,864 INFO L225 Difference]: With dead ends: 18725 [2020-12-17 14:37:55,864 INFO L226 Difference]: Without dead ends: 18455 [2020-12-17 14:37:55,864 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=679, Invalid=2183, Unknown=0, NotChecked=0, Total=2862 [2020-12-17 14:37:55,864 INFO L78 Accepts]: Start accepts. Automaton has 18455 states. Word has length 126 [2020-12-17 14:37:55,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:37:55,865 INFO L481 AbstractCegarLoop]: Abstraction has 18455 states. [2020-12-17 14:37:55,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:37:55,865 INFO L276 IsEmpty]: Start isEmpty. Operand 18455 states. [2020-12-17 14:37:55,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-12-17 14:37:55,886 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:37:55,886 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:37:56,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193,189 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:37:56,099 INFO L429 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:37:56,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:37:56,100 INFO L82 PathProgramCache]: Analyzing trace with hash 722061305, now seen corresponding path program 186 times [2020-12-17 14:37:56,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:37:56,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840236495] [2020-12-17 14:37:56,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:37:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:37:56,892 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:37:56,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840236495] [2020-12-17 14:37:56,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093552172] [2020-12-17 14:37:56,893 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:37:57,001 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2020-12-17 14:37:57,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:37:57,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-17 14:37:57,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:37:57,042 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:37:57,063 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:37:57,095 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:37:57,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:37:57,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2020-12-17 14:37:57,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125621561] [2020-12-17 14:37:57,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-12-17 14:37:57,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:37:57,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-12-17 14:37:57,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2020-12-17 14:37:57,098 INFO L87 Difference]: Start difference. First operand 18455 states. Second operand has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:37:58,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:37:58,692 INFO L93 Difference]: Finished difference Result 18775 states and 40910 transitions. [2020-12-17 14:37:58,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-12-17 14:37:58,693 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-12-17 14:37:58,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:37:58,713 INFO L225 Difference]: With dead ends: 18775 [2020-12-17 14:37:58,713 INFO L226 Difference]: Without dead ends: 18505 [2020-12-17 14:37:58,713 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=770, Invalid=2536, Unknown=0, NotChecked=0, Total=3306 [2020-12-17 14:37:58,714 INFO L78 Accepts]: Start accepts. Automaton has 18505 states. Word has length 126 [2020-12-17 14:37:58,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:37:58,714 INFO L481 AbstractCegarLoop]: Abstraction has 18505 states. [2020-12-17 14:37:58,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:37:58,714 INFO L276 IsEmpty]: Start isEmpty. Operand 18505 states. [2020-12-17 14:37:58,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-12-17 14:37:58,732 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:37:58,732 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:37:58,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 190 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable194 [2020-12-17 14:37:58,933 INFO L429 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:37:58,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:37:58,933 INFO L82 PathProgramCache]: Analyzing trace with hash 226224935, now seen corresponding path program 187 times [2020-12-17 14:37:58,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:37:58,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375170576] [2020-12-17 14:37:58,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:37:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:37:59,487 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:37:59,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375170576] [2020-12-17 14:37:59,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306800754] [2020-12-17 14:37:59,487 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:37:59,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:37:59,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-17 14:37:59,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:37:59,609 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:37:59,630 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:37:59,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:37:59,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-12-17 14:37:59,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153713923] [2020-12-17 14:37:59,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-17 14:37:59,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:37:59,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-17 14:37:59,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2020-12-17 14:37:59,632 INFO L87 Difference]: Start difference. First operand 18505 states. Second operand has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:38:01,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:38:01,235 INFO L93 Difference]: Finished difference Result 18825 states and 41010 transitions. [2020-12-17 14:38:01,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-12-17 14:38:01,236 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-12-17 14:38:01,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:38:01,256 INFO L225 Difference]: With dead ends: 18825 [2020-12-17 14:38:01,256 INFO L226 Difference]: Without dead ends: 18555 [2020-12-17 14:38:01,256 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 683 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=732, Invalid=2348, Unknown=0, NotChecked=0, Total=3080 [2020-12-17 14:38:01,256 INFO L78 Accepts]: Start accepts. Automaton has 18555 states. Word has length 126 [2020-12-17 14:38:01,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:38:01,256 INFO L481 AbstractCegarLoop]: Abstraction has 18555 states. [2020-12-17 14:38:01,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:38:01,257 INFO L276 IsEmpty]: Start isEmpty. Operand 18555 states. [2020-12-17 14:38:01,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-12-17 14:38:01,273 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:38:01,273 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:38:01,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195,191 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:38:01,474 INFO L429 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:38:01,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:38:01,474 INFO L82 PathProgramCache]: Analyzing trace with hash 930144759, now seen corresponding path program 188 times [2020-12-17 14:38:01,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:38:01,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539053760] [2020-12-17 14:38:01,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:38:01,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:38:02,208 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:38:02,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539053760] [2020-12-17 14:38:02,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644227103] [2020-12-17 14:38:02,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:38:02,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 14:38:02,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:38:02,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-17 14:38:02,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:38:02,354 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:38:02,378 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:38:02,399 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:38:02,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:38:02,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2020-12-17 14:38:02,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645172554] [2020-12-17 14:38:02,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-12-17 14:38:02,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:38:02,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-12-17 14:38:02,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2020-12-17 14:38:02,400 INFO L87 Difference]: Start difference. First operand 18555 states. Second operand has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:38:04,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:38:04,392 INFO L93 Difference]: Finished difference Result 18875 states and 41110 transitions. [2020-12-17 14:38:04,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-12-17 14:38:04,394 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-12-17 14:38:04,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:38:04,413 INFO L225 Difference]: With dead ends: 18875 [2020-12-17 14:38:04,414 INFO L226 Difference]: Without dead ends: 18605 [2020-12-17 14:38:04,414 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=831, Invalid=2709, Unknown=0, NotChecked=0, Total=3540 [2020-12-17 14:38:04,414 INFO L78 Accepts]: Start accepts. Automaton has 18605 states. Word has length 126 [2020-12-17 14:38:04,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:38:04,414 INFO L481 AbstractCegarLoop]: Abstraction has 18605 states. [2020-12-17 14:38:04,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:38:04,415 INFO L276 IsEmpty]: Start isEmpty. Operand 18605 states. [2020-12-17 14:38:04,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-12-17 14:38:04,431 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:38:04,431 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:38:04,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196,192 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:38:04,632 INFO L429 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:38:04,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:38:04,633 INFO L82 PathProgramCache]: Analyzing trace with hash 1814988453, now seen corresponding path program 189 times [2020-12-17 14:38:04,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:38:04,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752064755] [2020-12-17 14:38:04,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:38:04,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:38:05,184 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:38:05,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752064755] [2020-12-17 14:38:05,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420241100] [2020-12-17 14:38:05,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:38:05,292 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2020-12-17 14:38:05,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:38:05,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-17 14:38:05,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:38:05,323 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:38:05,342 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:38:05,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:38:05,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-12-17 14:38:05,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345567053] [2020-12-17 14:38:05,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-17 14:38:05,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:38:05,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-17 14:38:05,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2020-12-17 14:38:05,344 INFO L87 Difference]: Start difference. First operand 18605 states. Second operand has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:38:07,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:38:07,106 INFO L93 Difference]: Finished difference Result 18925 states and 41210 transitions. [2020-12-17 14:38:07,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-12-17 14:38:07,107 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-12-17 14:38:07,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:38:07,128 INFO L225 Difference]: With dead ends: 18925 [2020-12-17 14:38:07,128 INFO L226 Difference]: Without dead ends: 18655 [2020-12-17 14:38:07,129 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 764 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=801, Invalid=2505, Unknown=0, NotChecked=0, Total=3306 [2020-12-17 14:38:07,129 INFO L78 Accepts]: Start accepts. Automaton has 18655 states. Word has length 126 [2020-12-17 14:38:07,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:38:07,129 INFO L481 AbstractCegarLoop]: Abstraction has 18655 states. [2020-12-17 14:38:07,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:38:07,130 INFO L276 IsEmpty]: Start isEmpty. Operand 18655 states. [2020-12-17 14:38:07,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-12-17 14:38:07,150 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:38:07,150 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:38:07,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197,193 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:38:07,353 INFO L429 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:38:07,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:38:07,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1221771637, now seen corresponding path program 190 times [2020-12-17 14:38:07,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:38:07,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959269277] [2020-12-17 14:38:07,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:38:07,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:38:07,965 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:38:07,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959269277] [2020-12-17 14:38:07,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734111057] [2020-12-17 14:38:07,965 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:38:08,054 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 14:38:08,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:38:08,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-17 14:38:08,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:38:08,112 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:38:08,140 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:38:08,173 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:38:08,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:38:08,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2020-12-17 14:38:08,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449171664] [2020-12-17 14:38:08,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-12-17 14:38:08,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:38:08,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-12-17 14:38:08,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2020-12-17 14:38:08,175 INFO L87 Difference]: Start difference. First operand 18655 states. Second operand has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:38:10,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:38:10,360 INFO L93 Difference]: Finished difference Result 18975 states and 41310 transitions. [2020-12-17 14:38:10,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-12-17 14:38:10,361 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-12-17 14:38:10,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:38:10,387 INFO L225 Difference]: With dead ends: 18975 [2020-12-17 14:38:10,387 INFO L226 Difference]: Without dead ends: 18705 [2020-12-17 14:38:10,388 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 874 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=908, Invalid=2874, Unknown=0, NotChecked=0, Total=3782 [2020-12-17 14:38:10,388 INFO L78 Accepts]: Start accepts. Automaton has 18705 states. Word has length 126 [2020-12-17 14:38:10,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:38:10,388 INFO L481 AbstractCegarLoop]: Abstraction has 18705 states. [2020-12-17 14:38:10,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:38:10,388 INFO L276 IsEmpty]: Start isEmpty. Operand 18705 states. [2020-12-17 14:38:10,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-12-17 14:38:10,413 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:38:10,413 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:38:10,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198,194 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:38:10,627 INFO L429 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:38:10,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:38:10,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1049085859, now seen corresponding path program 191 times [2020-12-17 14:38:10,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:38:10,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666355488] [2020-12-17 14:38:10,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:38:10,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:38:11,353 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:38:11,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666355488] [2020-12-17 14:38:11,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350419555] [2020-12-17 14:38:11,354 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:38:11,445 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-12-17 14:38:11,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:38:11,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-17 14:38:11,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:38:11,485 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:38:11,516 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:38:11,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:38:11,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-12-17 14:38:11,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162296305] [2020-12-17 14:38:11,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-17 14:38:11,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:38:11,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-17 14:38:11,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2020-12-17 14:38:11,520 INFO L87 Difference]: Start difference. First operand 18705 states. Second operand has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:38:13,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:38:13,392 INFO L93 Difference]: Finished difference Result 19025 states and 41410 transitions. [2020-12-17 14:38:13,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-12-17 14:38:13,393 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-12-17 14:38:13,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:38:13,414 INFO L225 Difference]: With dead ends: 19025 [2020-12-17 14:38:13,414 INFO L226 Difference]: Without dead ends: 18755 [2020-12-17 14:38:13,415 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 849 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=886, Invalid=2654, Unknown=0, NotChecked=0, Total=3540 [2020-12-17 14:38:13,415 INFO L78 Accepts]: Start accepts. Automaton has 18755 states. Word has length 126 [2020-12-17 14:38:13,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:38:13,415 INFO L481 AbstractCegarLoop]: Abstraction has 18755 states. [2020-12-17 14:38:13,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:38:13,415 INFO L276 IsEmpty]: Start isEmpty. Operand 18755 states. [2020-12-17 14:38:13,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-12-17 14:38:13,436 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:38:13,436 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:38:13,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 195 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable199 [2020-12-17 14:38:13,649 INFO L429 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:38:13,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:38:13,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1084209549, now seen corresponding path program 192 times [2020-12-17 14:38:13,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:38:13,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105205539] [2020-12-17 14:38:13,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:38:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:38:14,141 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:38:14,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105205539] [2020-12-17 14:38:14,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290505319] [2020-12-17 14:38:14,142 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:38:14,237 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2020-12-17 14:38:14,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:38:14,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-17 14:38:14,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:38:14,283 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:38:14,306 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:38:14,332 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:38:14,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:38:14,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2020-12-17 14:38:14,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616323041] [2020-12-17 14:38:14,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-12-17 14:38:14,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:38:14,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-12-17 14:38:14,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2020-12-17 14:38:14,334 INFO L87 Difference]: Start difference. First operand 18755 states. Second operand has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:38:16,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:38:16,567 INFO L93 Difference]: Finished difference Result 19075 states and 41510 transitions. [2020-12-17 14:38:16,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-12-17 14:38:16,568 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-12-17 14:38:16,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:38:16,586 INFO L225 Difference]: With dead ends: 19075 [2020-12-17 14:38:16,586 INFO L226 Difference]: Without dead ends: 18805 [2020-12-17 14:38:16,587 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 966 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1001, Invalid=3031, Unknown=0, NotChecked=0, Total=4032 [2020-12-17 14:38:16,587 INFO L78 Accepts]: Start accepts. Automaton has 18805 states. Word has length 126 [2020-12-17 14:38:16,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:38:16,587 INFO L481 AbstractCegarLoop]: Abstraction has 18805 states. [2020-12-17 14:38:16,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:38:16,587 INFO L276 IsEmpty]: Start isEmpty. Operand 18805 states. [2020-12-17 14:38:16,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-12-17 14:38:16,603 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:38:16,603 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:38:16,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 196 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable200 [2020-12-17 14:38:16,804 INFO L429 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:38:16,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:38:16,805 INFO L82 PathProgramCache]: Analyzing trace with hash 806391329, now seen corresponding path program 193 times [2020-12-17 14:38:16,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:38:16,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970509619] [2020-12-17 14:38:16,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:38:16,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:38:17,335 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:38:17,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970509619] [2020-12-17 14:38:17,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863250173] [2020-12-17 14:38:17,336 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:38:17,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:38:17,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-17 14:38:17,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:38:17,465 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:38:17,603 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:38:17,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:38:17,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-12-17 14:38:17,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703010991] [2020-12-17 14:38:17,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-17 14:38:17,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:38:17,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-17 14:38:17,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2020-12-17 14:38:17,605 INFO L87 Difference]: Start difference. First operand 18805 states. Second operand has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:38:19,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:38:19,655 INFO L93 Difference]: Finished difference Result 19125 states and 41610 transitions. [2020-12-17 14:38:19,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-12-17 14:38:19,656 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-12-17 14:38:19,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:38:19,675 INFO L225 Difference]: With dead ends: 19125 [2020-12-17 14:38:19,676 INFO L226 Difference]: Without dead ends: 18855 [2020-12-17 14:38:19,676 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 938 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=987, Invalid=2795, Unknown=0, NotChecked=0, Total=3782 [2020-12-17 14:38:19,676 INFO L78 Accepts]: Start accepts. Automaton has 18855 states. Word has length 126 [2020-12-17 14:38:19,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:38:19,676 INFO L481 AbstractCegarLoop]: Abstraction has 18855 states. [2020-12-17 14:38:19,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:38:19,677 INFO L276 IsEmpty]: Start isEmpty. Operand 18855 states. [2020-12-17 14:38:19,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-12-17 14:38:19,693 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:38:19,693 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:38:19,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 197 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable201 [2020-12-17 14:38:19,894 INFO L429 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:38:19,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:38:19,894 INFO L82 PathProgramCache]: Analyzing trace with hash 2028097777, now seen corresponding path program 194 times [2020-12-17 14:38:19,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:38:19,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316854347] [2020-12-17 14:38:19,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:38:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:38:20,456 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:38:20,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316854347] [2020-12-17 14:38:20,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598066800] [2020-12-17 14:38:20,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:38:20,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 14:38:20,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:38:20,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-17 14:38:20,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:38:20,600 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:38:20,628 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:38:20,646 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:38:20,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:38:20,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2020-12-17 14:38:20,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783787148] [2020-12-17 14:38:20,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-12-17 14:38:20,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:38:20,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-12-17 14:38:20,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2020-12-17 14:38:20,647 INFO L87 Difference]: Start difference. First operand 18855 states. Second operand has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:38:23,168 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-12-17 14:38:23,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:38:23,369 INFO L93 Difference]: Finished difference Result 19175 states and 41710 transitions. [2020-12-17 14:38:23,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-12-17 14:38:23,370 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-12-17 14:38:23,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:38:23,393 INFO L225 Difference]: With dead ends: 19175 [2020-12-17 14:38:23,394 INFO L226 Difference]: Without dead ends: 18905 [2020-12-17 14:38:23,394 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1062 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1110, Invalid=3180, Unknown=0, NotChecked=0, Total=4290 [2020-12-17 14:38:23,394 INFO L78 Accepts]: Start accepts. Automaton has 18905 states. Word has length 126 [2020-12-17 14:38:23,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:38:23,395 INFO L481 AbstractCegarLoop]: Abstraction has 18905 states. [2020-12-17 14:38:23,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:38:23,395 INFO L276 IsEmpty]: Start isEmpty. Operand 18905 states. [2020-12-17 14:38:23,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-12-17 14:38:23,417 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:38:23,417 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:38:23,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 198 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable202 [2020-12-17 14:38:23,630 INFO L429 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:38:23,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:38:23,631 INFO L82 PathProgramCache]: Analyzing trace with hash 938064415, now seen corresponding path program 195 times [2020-12-17 14:38:23,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:38:23,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464457330] [2020-12-17 14:38:23,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:38:23,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:38:24,162 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:38:24,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464457330] [2020-12-17 14:38:24,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206842879] [2020-12-17 14:38:24,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:38:24,269 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2020-12-17 14:38:24,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:38:24,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-17 14:38:24,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:38:24,379 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:38:24,409 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:38:24,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:38:24,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-12-17 14:38:24,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155353936] [2020-12-17 14:38:24,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-17 14:38:24,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:38:24,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-17 14:38:24,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2020-12-17 14:38:24,411 INFO L87 Difference]: Start difference. First operand 18905 states. Second operand has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:38:26,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:38:26,450 INFO L93 Difference]: Finished difference Result 19225 states and 41810 transitions. [2020-12-17 14:38:26,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-12-17 14:38:26,452 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-12-17 14:38:26,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:38:26,478 INFO L225 Difference]: With dead ends: 19225 [2020-12-17 14:38:26,478 INFO L226 Difference]: Without dead ends: 18955 [2020-12-17 14:38:26,479 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1031 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1104, Invalid=2928, Unknown=0, NotChecked=0, Total=4032 [2020-12-17 14:38:26,479 INFO L78 Accepts]: Start accepts. Automaton has 18955 states. Word has length 126 [2020-12-17 14:38:26,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:38:26,480 INFO L481 AbstractCegarLoop]: Abstraction has 18955 states. [2020-12-17 14:38:26,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:38:26,480 INFO L276 IsEmpty]: Start isEmpty. Operand 18955 states. [2020-12-17 14:38:26,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-12-17 14:38:26,504 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:38:26,504 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:38:26,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203,199 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:38:26,719 INFO L429 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:38:26,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:38:26,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1857667311, now seen corresponding path program 196 times [2020-12-17 14:38:26,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:38:26,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183735919] [2020-12-17 14:38:26,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:38:26,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:38:27,251 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:38:27,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183735919] [2020-12-17 14:38:27,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113376132] [2020-12-17 14:38:27,251 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:38:27,339 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 14:38:27,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:38:27,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-17 14:38:27,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:38:27,390 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:38:27,419 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:38:27,445 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:38:27,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:38:27,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2020-12-17 14:38:27,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833661990] [2020-12-17 14:38:27,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-12-17 14:38:27,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:38:27,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-12-17 14:38:27,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2020-12-17 14:38:27,447 INFO L87 Difference]: Start difference. First operand 18955 states. Second operand has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:38:29,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:38:29,968 INFO L93 Difference]: Finished difference Result 19315 states and 41990 transitions. [2020-12-17 14:38:29,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-12-17 14:38:29,969 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-12-17 14:38:29,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:38:29,991 INFO L225 Difference]: With dead ends: 19315 [2020-12-17 14:38:29,991 INFO L226 Difference]: Without dead ends: 19045 [2020-12-17 14:38:29,992 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1162 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1235, Invalid=3321, Unknown=0, NotChecked=0, Total=4556 [2020-12-17 14:38:29,992 INFO L78 Accepts]: Start accepts. Automaton has 19045 states. Word has length 126 [2020-12-17 14:38:29,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:38:29,993 INFO L481 AbstractCegarLoop]: Abstraction has 19045 states. [2020-12-17 14:38:29,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:38:29,993 INFO L276 IsEmpty]: Start isEmpty. Operand 19045 states. [2020-12-17 14:38:30,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-12-17 14:38:30,014 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:38:30,014 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:38:30,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 200 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable204 [2020-12-17 14:38:30,227 INFO L429 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:38:30,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:38:30,228 INFO L82 PathProgramCache]: Analyzing trace with hash -2085224067, now seen corresponding path program 197 times [2020-12-17 14:38:30,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:38:30,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385584629] [2020-12-17 14:38:30,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:38:30,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:38:30,972 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:38:30,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385584629] [2020-12-17 14:38:30,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63784191] [2020-12-17 14:38:30,972 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:38:31,055 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-12-17 14:38:31,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:38:31,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-17 14:38:31,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:38:31,095 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:38:31,115 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:38:31,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:38:31,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-12-17 14:38:31,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346116108] [2020-12-17 14:38:31,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-17 14:38:31,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:38:31,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-17 14:38:31,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2020-12-17 14:38:31,117 INFO L87 Difference]: Start difference. First operand 19045 states. Second operand has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:38:33,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:38:33,373 INFO L93 Difference]: Finished difference Result 20517 states and 45354 transitions. [2020-12-17 14:38:33,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-12-17 14:38:33,374 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-12-17 14:38:33,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:38:33,391 INFO L225 Difference]: With dead ends: 20517 [2020-12-17 14:38:33,391 INFO L226 Difference]: Without dead ends: 20247 [2020-12-17 14:38:33,391 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1238, Invalid=3052, Unknown=0, NotChecked=0, Total=4290 [2020-12-17 14:38:33,391 INFO L78 Accepts]: Start accepts. Automaton has 20247 states. Word has length 126 [2020-12-17 14:38:33,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:38:33,392 INFO L481 AbstractCegarLoop]: Abstraction has 20247 states. [2020-12-17 14:38:33,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:38:33,392 INFO L276 IsEmpty]: Start isEmpty. Operand 20247 states. [2020-12-17 14:38:33,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-12-17 14:38:33,406 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:38:33,406 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:38:33,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205,201 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:38:33,607 INFO L429 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:38:33,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:38:33,607 INFO L82 PathProgramCache]: Analyzing trace with hash -2088197297, now seen corresponding path program 198 times [2020-12-17 14:38:33,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:38:33,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237619376] [2020-12-17 14:38:33,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:38:33,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:38:34,163 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:38:34,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237619376] [2020-12-17 14:38:34,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964330817] [2020-12-17 14:38:34,164 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:38:34,267 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2020-12-17 14:38:34,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:38:34,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-17 14:38:34,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:38:34,314 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:38:34,345 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:38:34,361 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:38:34,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:38:34,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 26 [2020-12-17 14:38:34,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078176884] [2020-12-17 14:38:34,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-12-17 14:38:34,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:38:34,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-12-17 14:38:34,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2020-12-17 14:38:34,363 INFO L87 Difference]: Start difference. First operand 20247 states. Second operand has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:38:37,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:38:37,110 INFO L93 Difference]: Finished difference Result 19799 states and 43196 transitions. [2020-12-17 14:38:37,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-12-17 14:38:37,111 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2020-12-17 14:38:37,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:38:37,129 INFO L225 Difference]: With dead ends: 19799 [2020-12-17 14:38:37,129 INFO L226 Difference]: Without dead ends: 19200 [2020-12-17 14:38:37,130 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1266 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1379, Invalid=3451, Unknown=0, NotChecked=0, Total=4830 [2020-12-17 14:38:37,130 INFO L78 Accepts]: Start accepts. Automaton has 19200 states. Word has length 126 [2020-12-17 14:38:37,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:38:37,130 INFO L481 AbstractCegarLoop]: Abstraction has 19200 states. [2020-12-17 14:38:37,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:38:37,130 INFO L276 IsEmpty]: Start isEmpty. Operand 19200 states. [2020-12-17 14:38:37,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-17 14:38:37,146 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:38:37,147 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:38:37,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 202 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable206 [2020-12-17 14:38:37,347 INFO L429 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:38:37,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:38:37,348 INFO L82 PathProgramCache]: Analyzing trace with hash -2002478254, now seen corresponding path program 199 times [2020-12-17 14:38:37,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:38:37,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819762815] [2020-12-17 14:38:37,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:38:37,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:38:38,118 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2020-12-17 14:38:38,308 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:38:38,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819762815] [2020-12-17 14:38:38,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817715207] [2020-12-17 14:38:38,308 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:38:38,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:38:38,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-17 14:38:38,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:38:38,469 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:38:38,518 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:38:38,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:38:38,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2020-12-17 14:38:38,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569316983] [2020-12-17 14:38:38,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-17 14:38:38,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:38:38,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-17 14:38:38,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=529, Unknown=0, NotChecked=0, Total=702 [2020-12-17 14:38:38,520 INFO L87 Difference]: Start difference. First operand 19200 states. Second operand has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:38:39,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:38:39,754 INFO L93 Difference]: Finished difference Result 19520 states and 42470 transitions. [2020-12-17 14:38:39,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-12-17 14:38:39,756 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-12-17 14:38:39,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:38:39,781 INFO L225 Difference]: With dead ends: 19520 [2020-12-17 14:38:39,781 INFO L226 Difference]: Without dead ends: 19250 [2020-12-17 14:38:39,782 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=712, Invalid=1738, Unknown=0, NotChecked=0, Total=2450 [2020-12-17 14:38:39,782 INFO L78 Accepts]: Start accepts. Automaton has 19250 states. Word has length 131 [2020-12-17 14:38:39,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:38:39,783 INFO L481 AbstractCegarLoop]: Abstraction has 19250 states. [2020-12-17 14:38:39,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:38:39,783 INFO L276 IsEmpty]: Start isEmpty. Operand 19250 states. [2020-12-17 14:38:39,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-17 14:38:39,808 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:38:39,808 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:38:40,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207,203 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:38:40,023 INFO L429 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:38:40,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:38:40,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1938561756, now seen corresponding path program 200 times [2020-12-17 14:38:40,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:38:40,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102214755] [2020-12-17 14:38:40,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:38:40,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:38:40,850 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:38:40,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102214755] [2020-12-17 14:38:40,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528055026] [2020-12-17 14:38:40,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:38:40,947 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 14:38:40,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:38:40,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-17 14:38:40,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:38:40,992 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:38:41,066 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:38:41,114 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:38:41,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:38:41,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-12-17 14:38:41,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093596389] [2020-12-17 14:38:41,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-17 14:38:41,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:38:41,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-17 14:38:41,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=590, Unknown=0, NotChecked=0, Total=756 [2020-12-17 14:38:41,116 INFO L87 Difference]: Start difference. First operand 19250 states. Second operand has 28 states, 28 states have (on average 4.821428571428571) internal successors, (135), 28 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:38:42,077 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-12-17 14:38:42,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:38:42,607 INFO L93 Difference]: Finished difference Result 19570 states and 42570 transitions. [2020-12-17 14:38:42,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-17 14:38:42,609 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.821428571428571) internal successors, (135), 28 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-12-17 14:38:42,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:38:42,632 INFO L225 Difference]: With dead ends: 19570 [2020-12-17 14:38:42,633 INFO L226 Difference]: Without dead ends: 19300 [2020-12-17 14:38:42,633 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=738, Invalid=2018, Unknown=0, NotChecked=0, Total=2756 [2020-12-17 14:38:42,633 INFO L78 Accepts]: Start accepts. Automaton has 19300 states. Word has length 131 [2020-12-17 14:38:42,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:38:42,634 INFO L481 AbstractCegarLoop]: Abstraction has 19300 states. [2020-12-17 14:38:42,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.821428571428571) internal successors, (135), 28 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:38:42,634 INFO L276 IsEmpty]: Start isEmpty. Operand 19300 states. [2020-12-17 14:38:42,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-17 14:38:42,657 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:38:42,657 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:38:42,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208,204 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:38:42,870 INFO L429 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:38:42,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:38:42,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1581562942, now seen corresponding path program 201 times [2020-12-17 14:38:42,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:38:42,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263549803] [2020-12-17 14:38:42,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:38:42,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:38:43,606 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:38:43,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263549803] [2020-12-17 14:38:43,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339205644] [2020-12-17 14:38:43,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:38:43,709 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2020-12-17 14:38:43,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:38:43,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-17 14:38:43,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:38:43,781 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:38:43,820 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:38:43,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:38:43,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2020-12-17 14:38:43,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690679234] [2020-12-17 14:38:43,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-17 14:38:43,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:38:43,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-17 14:38:43,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2020-12-17 14:38:43,822 INFO L87 Difference]: Start difference. First operand 19300 states. Second operand has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:38:45,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:38:45,054 INFO L93 Difference]: Finished difference Result 19620 states and 42670 transitions. [2020-12-17 14:38:45,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-12-17 14:38:45,055 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-12-17 14:38:45,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:38:45,078 INFO L225 Difference]: With dead ends: 19620 [2020-12-17 14:38:45,078 INFO L226 Difference]: Without dead ends: 19350 [2020-12-17 14:38:45,079 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=722, Invalid=2034, Unknown=0, NotChecked=0, Total=2756 [2020-12-17 14:38:45,079 INFO L78 Accepts]: Start accepts. Automaton has 19350 states. Word has length 131 [2020-12-17 14:38:45,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:38:45,079 INFO L481 AbstractCegarLoop]: Abstraction has 19350 states. [2020-12-17 14:38:45,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:38:45,079 INFO L276 IsEmpty]: Start isEmpty. Operand 19350 states. [2020-12-17 14:38:45,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-17 14:38:45,102 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:38:45,102 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:38:45,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209,205 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:38:45,317 INFO L429 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:38:45,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:38:45,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1347509490, now seen corresponding path program 202 times [2020-12-17 14:38:45,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:38:45,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103070938] [2020-12-17 14:38:45,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:38:45,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:38:46,132 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:38:46,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103070938] [2020-12-17 14:38:46,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505562541] [2020-12-17 14:38:46,133 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:38:46,219 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 14:38:46,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:38:46,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-17 14:38:46,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:38:46,271 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:38:46,341 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:38:46,380 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:38:46,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:38:46,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-12-17 14:38:46,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92298701] [2020-12-17 14:38:46,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-17 14:38:46,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:38:46,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-17 14:38:46,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2020-12-17 14:38:46,381 INFO L87 Difference]: Start difference. First operand 19350 states. Second operand has 28 states, 28 states have (on average 4.821428571428571) internal successors, (135), 28 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:38:47,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:38:47,777 INFO L93 Difference]: Finished difference Result 19720 states and 42870 transitions. [2020-12-17 14:38:47,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-12-17 14:38:47,778 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.821428571428571) internal successors, (135), 28 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-12-17 14:38:47,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:38:47,798 INFO L225 Difference]: With dead ends: 19720 [2020-12-17 14:38:47,798 INFO L226 Difference]: Without dead ends: 19450 [2020-12-17 14:38:47,798 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=780, Invalid=2300, Unknown=0, NotChecked=0, Total=3080 [2020-12-17 14:38:47,798 INFO L78 Accepts]: Start accepts. Automaton has 19450 states. Word has length 131 [2020-12-17 14:38:47,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:38:47,798 INFO L481 AbstractCegarLoop]: Abstraction has 19450 states. [2020-12-17 14:38:47,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.821428571428571) internal successors, (135), 28 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:38:47,799 INFO L276 IsEmpty]: Start isEmpty. Operand 19450 states. [2020-12-17 14:38:47,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-17 14:38:47,816 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:38:47,816 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:38:48,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 206 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable210 [2020-12-17 14:38:48,016 INFO L429 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:38:48,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:38:48,017 INFO L82 PathProgramCache]: Analyzing trace with hash -740982340, now seen corresponding path program 203 times [2020-12-17 14:38:48,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:38:48,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210194261] [2020-12-17 14:38:48,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:38:48,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:38:48,718 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:38:48,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210194261] [2020-12-17 14:38:48,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512176068] [2020-12-17 14:38:48,719 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:38:48,821 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-12-17 14:38:48,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:38:48,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-17 14:38:48,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:38:48,888 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:38:48,914 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:38:48,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:38:48,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2020-12-17 14:38:48,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052189306] [2020-12-17 14:38:48,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-17 14:38:48,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:38:48,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-17 14:38:48,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=565, Unknown=0, NotChecked=0, Total=702 [2020-12-17 14:38:48,916 INFO L87 Difference]: Start difference. First operand 19450 states. Second operand has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:38:50,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:38:50,452 INFO L93 Difference]: Finished difference Result 19770 states and 42970 transitions. [2020-12-17 14:38:50,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-12-17 14:38:50,453 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-12-17 14:38:50,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:38:50,473 INFO L225 Difference]: With dead ends: 19770 [2020-12-17 14:38:50,474 INFO L226 Difference]: Without dead ends: 19500 [2020-12-17 14:38:50,474 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 648 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=776, Invalid=2304, Unknown=0, NotChecked=0, Total=3080 [2020-12-17 14:38:50,474 INFO L78 Accepts]: Start accepts. Automaton has 19500 states. Word has length 131 [2020-12-17 14:38:50,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:38:50,474 INFO L481 AbstractCegarLoop]: Abstraction has 19500 states. [2020-12-17 14:38:50,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:38:50,475 INFO L276 IsEmpty]: Start isEmpty. Operand 19500 states. [2020-12-17 14:38:50,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-17 14:38:50,491 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:38:50,492 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:38:50,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 207 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable211 [2020-12-17 14:38:50,692 INFO L429 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:38:50,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:38:50,693 INFO L82 PathProgramCache]: Analyzing trace with hash -933581684, now seen corresponding path program 204 times [2020-12-17 14:38:50,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:38:50,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145970742] [2020-12-17 14:38:50,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:38:50,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:38:51,429 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:38:51,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145970742] [2020-12-17 14:38:51,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988902439] [2020-12-17 14:38:51,430 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:38:51,536 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2020-12-17 14:38:51,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:38:51,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-17 14:38:51,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:38:51,582 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:38:51,653 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:38:51,680 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:38:51,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:38:51,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-12-17 14:38:51,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279766564] [2020-12-17 14:38:51,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-17 14:38:51,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:38:51,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-17 14:38:51,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756 [2020-12-17 14:38:51,681 INFO L87 Difference]: Start difference. First operand 19500 states. Second operand has 28 states, 28 states have (on average 4.821428571428571) internal successors, (135), 28 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:38:53,484 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-12-17 14:38:53,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:38:53,539 INFO L93 Difference]: Finished difference Result 19820 states and 43070 transitions. [2020-12-17 14:38:53,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-12-17 14:38:53,540 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.821428571428571) internal successors, (135), 28 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-12-17 14:38:53,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:38:53,563 INFO L225 Difference]: With dead ends: 19820 [2020-12-17 14:38:53,563 INFO L226 Difference]: Without dead ends: 19550 [2020-12-17 14:38:53,563 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=799, Invalid=2507, Unknown=0, NotChecked=0, Total=3306 [2020-12-17 14:38:53,564 INFO L78 Accepts]: Start accepts. Automaton has 19550 states. Word has length 131 [2020-12-17 14:38:53,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:38:53,564 INFO L481 AbstractCegarLoop]: Abstraction has 19550 states. [2020-12-17 14:38:53,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.821428571428571) internal successors, (135), 28 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:38:53,566 INFO L276 IsEmpty]: Start isEmpty. Operand 19550 states. [2020-12-17 14:38:53,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-17 14:38:53,589 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:38:53,589 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:38:53,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 208 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable212 [2020-12-17 14:38:53,804 INFO L429 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:38:53,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:38:53,805 INFO L82 PathProgramCache]: Analyzing trace with hash 718892218, now seen corresponding path program 205 times [2020-12-17 14:38:53,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:38:53,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91290715] [2020-12-17 14:38:53,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:38:53,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:38:54,733 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:38:54,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91290715] [2020-12-17 14:38:54,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618524038] [2020-12-17 14:38:54,733 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:38:54,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:38:54,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-17 14:38:54,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:38:54,896 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:38:54,940 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:38:54,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:38:54,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2020-12-17 14:38:54,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417002145] [2020-12-17 14:38:54,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-17 14:38:54,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:38:54,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-17 14:38:54,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2020-12-17 14:38:54,942 INFO L87 Difference]: Start difference. First operand 19550 states. Second operand has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:38:56,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:38:56,475 INFO L93 Difference]: Finished difference Result 19870 states and 43170 transitions. [2020-12-17 14:38:56,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-12-17 14:38:56,477 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-12-17 14:38:56,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:38:56,504 INFO L225 Difference]: With dead ends: 19870 [2020-12-17 14:38:56,504 INFO L226 Difference]: Without dead ends: 19600 [2020-12-17 14:38:56,505 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 731 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=809, Invalid=2497, Unknown=0, NotChecked=0, Total=3306 [2020-12-17 14:38:56,505 INFO L78 Accepts]: Start accepts. Automaton has 19600 states. Word has length 131 [2020-12-17 14:38:56,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:38:56,505 INFO L481 AbstractCegarLoop]: Abstraction has 19600 states. [2020-12-17 14:38:56,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:38:56,506 INFO L276 IsEmpty]: Start isEmpty. Operand 19600 states. [2020-12-17 14:38:56,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-17 14:38:56,531 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:38:56,531 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:38:56,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 209 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable213 [2020-12-17 14:38:56,740 INFO L429 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:38:56,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:38:56,741 INFO L82 PathProgramCache]: Analyzing trace with hash 184474506, now seen corresponding path program 206 times [2020-12-17 14:38:56,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:38:56,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838238572] [2020-12-17 14:38:56,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:38:56,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:38:57,566 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:38:57,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838238572] [2020-12-17 14:38:57,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623759091] [2020-12-17 14:38:57,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:38:57,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 14:38:57,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:38:57,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-17 14:38:57,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:38:57,710 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:38:57,790 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:38:57,832 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:38:57,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:38:57,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-12-17 14:38:57,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392815427] [2020-12-17 14:38:57,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-17 14:38:57,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:38:57,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-17 14:38:57,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=635, Unknown=0, NotChecked=0, Total=756 [2020-12-17 14:38:57,834 INFO L87 Difference]: Start difference. First operand 19600 states. Second operand has 28 states, 28 states have (on average 4.821428571428571) internal successors, (135), 28 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:38:59,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:38:59,586 INFO L93 Difference]: Finished difference Result 19920 states and 43270 transitions. [2020-12-17 14:38:59,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-12-17 14:38:59,587 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.821428571428571) internal successors, (135), 28 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-12-17 14:38:59,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:38:59,610 INFO L225 Difference]: With dead ends: 19920 [2020-12-17 14:38:59,610 INFO L226 Difference]: Without dead ends: 19650 [2020-12-17 14:38:59,611 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=834, Invalid=2706, Unknown=0, NotChecked=0, Total=3540 [2020-12-17 14:38:59,611 INFO L78 Accepts]: Start accepts. Automaton has 19650 states. Word has length 131 [2020-12-17 14:38:59,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:38:59,611 INFO L481 AbstractCegarLoop]: Abstraction has 19650 states. [2020-12-17 14:38:59,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.821428571428571) internal successors, (135), 28 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:38:59,612 INFO L276 IsEmpty]: Start isEmpty. Operand 19650 states. [2020-12-17 14:38:59,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-17 14:38:59,634 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:38:59,634 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:38:59,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 210 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable214 [2020-12-17 14:38:59,849 INFO L429 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:38:59,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:38:59,850 INFO L82 PathProgramCache]: Analyzing trace with hash 209280312, now seen corresponding path program 207 times [2020-12-17 14:38:59,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:38:59,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215320921] [2020-12-17 14:38:59,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:38:59,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:39:00,435 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:39:00,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215320921] [2020-12-17 14:39:00,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913995492] [2020-12-17 14:39:00,436 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:39:00,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2020-12-17 14:39:00,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:39:00,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-17 14:39:00,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:39:00,732 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:39:00,766 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:39:00,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:39:00,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2020-12-17 14:39:00,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154279046] [2020-12-17 14:39:00,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-17 14:39:00,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:39:00,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-17 14:39:00,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2020-12-17 14:39:00,767 INFO L87 Difference]: Start difference. First operand 19650 states. Second operand has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:39:02,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:39:02,254 INFO L93 Difference]: Finished difference Result 19970 states and 43370 transitions. [2020-12-17 14:39:02,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-12-17 14:39:02,256 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-12-17 14:39:02,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:39:02,279 INFO L225 Difference]: With dead ends: 19970 [2020-12-17 14:39:02,279 INFO L226 Difference]: Without dead ends: 19700 [2020-12-17 14:39:02,280 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 824 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=858, Invalid=2682, Unknown=0, NotChecked=0, Total=3540 [2020-12-17 14:39:02,281 INFO L78 Accepts]: Start accepts. Automaton has 19700 states. Word has length 131 [2020-12-17 14:39:02,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:39:02,281 INFO L481 AbstractCegarLoop]: Abstraction has 19700 states. [2020-12-17 14:39:02,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:39:02,281 INFO L276 IsEmpty]: Start isEmpty. Operand 19700 states. [2020-12-17 14:39:02,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-17 14:39:02,304 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:39:02,304 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:39:02,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215,211 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:39:02,507 INFO L429 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:39:02,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:39:02,508 INFO L82 PathProgramCache]: Analyzing trace with hash 319033352, now seen corresponding path program 208 times [2020-12-17 14:39:02,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:39:02,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519750411] [2020-12-17 14:39:02,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:39:02,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:39:03,218 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:39:03,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519750411] [2020-12-17 14:39:03,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895931058] [2020-12-17 14:39:03,218 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:39:03,317 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 14:39:03,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:39:03,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-17 14:39:03,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:39:03,366 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:39:03,439 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:39:03,542 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:39:03,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:39:03,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-12-17 14:39:03,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432672702] [2020-12-17 14:39:03,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-17 14:39:03,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:39:03,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-17 14:39:03,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2020-12-17 14:39:03,544 INFO L87 Difference]: Start difference. First operand 19700 states. Second operand has 28 states, 28 states have (on average 4.821428571428571) internal successors, (135), 28 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:39:05,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:39:05,677 INFO L93 Difference]: Finished difference Result 20020 states and 43470 transitions. [2020-12-17 14:39:05,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-12-17 14:39:05,678 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.821428571428571) internal successors, (135), 28 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-12-17 14:39:05,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:39:05,699 INFO L225 Difference]: With dead ends: 20020 [2020-12-17 14:39:05,699 INFO L226 Difference]: Without dead ends: 19750 [2020-12-17 14:39:05,699 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 848 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=885, Invalid=2897, Unknown=0, NotChecked=0, Total=3782 [2020-12-17 14:39:05,699 INFO L78 Accepts]: Start accepts. Automaton has 19750 states. Word has length 131 [2020-12-17 14:39:05,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:39:05,700 INFO L481 AbstractCegarLoop]: Abstraction has 19750 states. [2020-12-17 14:39:05,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.821428571428571) internal successors, (135), 28 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:39:05,700 INFO L276 IsEmpty]: Start isEmpty. Operand 19750 states. [2020-12-17 14:39:05,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-17 14:39:05,717 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:39:05,717 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:39:05,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 212 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable216 [2020-12-17 14:39:05,918 INFO L429 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:39:05,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:39:05,918 INFO L82 PathProgramCache]: Analyzing trace with hash -176803018, now seen corresponding path program 209 times [2020-12-17 14:39:05,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:39:05,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878309421] [2020-12-17 14:39:05,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:39:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:39:06,563 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:39:06,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878309421] [2020-12-17 14:39:06,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240587216] [2020-12-17 14:39:06,564 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:39:06,666 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-12-17 14:39:06,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:39:06,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-17 14:39:06,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:39:06,742 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:39:06,765 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:39:06,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:39:06,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2020-12-17 14:39:06,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107046004] [2020-12-17 14:39:06,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-17 14:39:06,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:39:06,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-17 14:39:06,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=589, Unknown=0, NotChecked=0, Total=702 [2020-12-17 14:39:06,766 INFO L87 Difference]: Start difference. First operand 19750 states. Second operand has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:39:07,045 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 10 [2020-12-17 14:39:08,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:39:08,618 INFO L93 Difference]: Finished difference Result 20070 states and 43570 transitions. [2020-12-17 14:39:08,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-12-17 14:39:08,619 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-12-17 14:39:08,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:39:08,647 INFO L225 Difference]: With dead ends: 20070 [2020-12-17 14:39:08,647 INFO L226 Difference]: Without dead ends: 19800 [2020-12-17 14:39:08,648 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 921 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=923, Invalid=2859, Unknown=0, NotChecked=0, Total=3782 [2020-12-17 14:39:08,648 INFO L78 Accepts]: Start accepts. Automaton has 19800 states. Word has length 131 [2020-12-17 14:39:08,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:39:08,649 INFO L481 AbstractCegarLoop]: Abstraction has 19800 states. [2020-12-17 14:39:08,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:39:08,649 INFO L276 IsEmpty]: Start isEmpty. Operand 19800 states. [2020-12-17 14:39:08,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-17 14:39:08,674 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:39:08,675 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:39:08,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217,213 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:39:08,888 INFO L429 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:39:08,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:39:08,889 INFO L82 PathProgramCache]: Analyzing trace with hash 527116806, now seen corresponding path program 210 times [2020-12-17 14:39:08,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:39:08,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374405872] [2020-12-17 14:39:08,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:39:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:39:09,573 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:39:09,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374405872] [2020-12-17 14:39:09,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083717501] [2020-12-17 14:39:09,574 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:39:09,684 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2020-12-17 14:39:09,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:39:09,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-17 14:39:09,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:39:09,737 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:39:09,813 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:39:09,851 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:39:09,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:39:09,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-12-17 14:39:09,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553730431] [2020-12-17 14:39:09,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-17 14:39:09,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:39:09,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-17 14:39:09,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=645, Unknown=0, NotChecked=0, Total=756 [2020-12-17 14:39:09,853 INFO L87 Difference]: Start difference. First operand 19800 states. Second operand has 28 states, 28 states have (on average 4.821428571428571) internal successors, (135), 28 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:39:12,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:39:12,217 INFO L93 Difference]: Finished difference Result 20120 states and 43670 transitions. [2020-12-17 14:39:12,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-12-17 14:39:12,219 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.821428571428571) internal successors, (135), 28 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-12-17 14:39:12,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:39:12,245 INFO L225 Difference]: With dead ends: 20120 [2020-12-17 14:39:12,246 INFO L226 Difference]: Without dead ends: 19850 [2020-12-17 14:39:12,246 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 948 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=952, Invalid=3080, Unknown=0, NotChecked=0, Total=4032 [2020-12-17 14:39:12,246 INFO L78 Accepts]: Start accepts. Automaton has 19850 states. Word has length 131 [2020-12-17 14:39:12,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:39:12,247 INFO L481 AbstractCegarLoop]: Abstraction has 19850 states. [2020-12-17 14:39:12,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.821428571428571) internal successors, (135), 28 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:39:12,247 INFO L276 IsEmpty]: Start isEmpty. Operand 19850 states. [2020-12-17 14:39:12,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-17 14:39:12,272 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:39:12,272 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:39:12,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218,214 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:39:12,485 INFO L429 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:39:12,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:39:12,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1411960500, now seen corresponding path program 211 times [2020-12-17 14:39:12,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:39:12,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314640618] [2020-12-17 14:39:12,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:39:12,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:39:13,228 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:39:13,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314640618] [2020-12-17 14:39:13,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735453184] [2020-12-17 14:39:13,229 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:39:13,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:39:13,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-17 14:39:13,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:39:13,381 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:39:13,411 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:39:13,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:39:13,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2020-12-17 14:39:13,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013958061] [2020-12-17 14:39:13,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-17 14:39:13,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:39:13,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-17 14:39:13,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=589, Unknown=0, NotChecked=0, Total=702 [2020-12-17 14:39:13,413 INFO L87 Difference]: Start difference. First operand 19850 states. Second operand has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:39:15,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:39:15,322 INFO L93 Difference]: Finished difference Result 20170 states and 43770 transitions. [2020-12-17 14:39:15,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-12-17 14:39:15,323 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-12-17 14:39:15,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:39:15,346 INFO L225 Difference]: With dead ends: 20170 [2020-12-17 14:39:15,347 INFO L226 Difference]: Without dead ends: 19900 [2020-12-17 14:39:15,347 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1022 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1004, Invalid=3028, Unknown=0, NotChecked=0, Total=4032 [2020-12-17 14:39:15,347 INFO L78 Accepts]: Start accepts. Automaton has 19900 states. Word has length 131 [2020-12-17 14:39:15,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:39:15,348 INFO L481 AbstractCegarLoop]: Abstraction has 19900 states. [2020-12-17 14:39:15,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:39:15,348 INFO L276 IsEmpty]: Start isEmpty. Operand 19900 states. [2020-12-17 14:39:15,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-17 14:39:15,371 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:39:15,371 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:39:15,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219,215 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:39:15,585 INFO L429 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:39:15,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:39:15,586 INFO L82 PathProgramCache]: Analyzing trace with hash 818743684, now seen corresponding path program 212 times [2020-12-17 14:39:15,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:39:15,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718930043] [2020-12-17 14:39:15,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:39:15,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:39:16,201 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:39:16,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718930043] [2020-12-17 14:39:16,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162203239] [2020-12-17 14:39:16,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:39:16,282 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 14:39:16,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:39:16,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-17 14:39:16,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:39:16,331 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:39:16,399 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:39:16,498 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:39:16,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:39:16,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-12-17 14:39:16,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527547976] [2020-12-17 14:39:16,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-17 14:39:16,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:39:16,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-17 14:39:16,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=644, Unknown=0, NotChecked=0, Total=756 [2020-12-17 14:39:16,499 INFO L87 Difference]: Start difference. First operand 19900 states. Second operand has 28 states, 28 states have (on average 4.821428571428571) internal successors, (135), 28 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:39:18,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:39:18,915 INFO L93 Difference]: Finished difference Result 20220 states and 43870 transitions. [2020-12-17 14:39:18,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-12-17 14:39:18,916 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.821428571428571) internal successors, (135), 28 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-12-17 14:39:18,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:39:18,938 INFO L225 Difference]: With dead ends: 20220 [2020-12-17 14:39:18,938 INFO L226 Difference]: Without dead ends: 19950 [2020-12-17 14:39:18,939 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1052 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1035, Invalid=3255, Unknown=0, NotChecked=0, Total=4290 [2020-12-17 14:39:18,939 INFO L78 Accepts]: Start accepts. Automaton has 19950 states. Word has length 131 [2020-12-17 14:39:18,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:39:18,939 INFO L481 AbstractCegarLoop]: Abstraction has 19950 states. [2020-12-17 14:39:18,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.821428571428571) internal successors, (135), 28 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:39:18,939 INFO L276 IsEmpty]: Start isEmpty. Operand 19950 states. [2020-12-17 14:39:18,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-17 14:39:18,957 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:39:18,958 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:39:19,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220,216 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:39:19,158 INFO L429 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:39:19,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:39:19,159 INFO L82 PathProgramCache]: Analyzing trace with hash 646057906, now seen corresponding path program 213 times [2020-12-17 14:39:19,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:39:19,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931914181] [2020-12-17 14:39:19,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:39:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:39:19,860 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:39:19,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931914181] [2020-12-17 14:39:19,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839677733] [2020-12-17 14:39:19,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:39:19,969 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2020-12-17 14:39:19,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:39:19,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-17 14:39:19,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:39:20,051 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:39:20,086 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:39:20,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:39:20,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2020-12-17 14:39:20,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532526765] [2020-12-17 14:39:20,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-17 14:39:20,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:39:20,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-17 14:39:20,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2020-12-17 14:39:20,088 INFO L87 Difference]: Start difference. First operand 19950 states. Second operand has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:39:22,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:39:22,120 INFO L93 Difference]: Finished difference Result 20270 states and 43970 transitions. [2020-12-17 14:39:22,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-12-17 14:39:22,121 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-12-17 14:39:22,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:39:22,149 INFO L225 Difference]: With dead ends: 20270 [2020-12-17 14:39:22,149 INFO L226 Difference]: Without dead ends: 20000 [2020-12-17 14:39:22,150 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1101, Invalid=3189, Unknown=0, NotChecked=0, Total=4290 [2020-12-17 14:39:22,150 INFO L78 Accepts]: Start accepts. Automaton has 20000 states. Word has length 131 [2020-12-17 14:39:22,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:39:22,150 INFO L481 AbstractCegarLoop]: Abstraction has 20000 states. [2020-12-17 14:39:22,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:39:22,151 INFO L276 IsEmpty]: Start isEmpty. Operand 20000 states. [2020-12-17 14:39:22,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-17 14:39:22,176 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:39:22,176 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:39:22,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 217 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable221 [2020-12-17 14:39:22,389 INFO L429 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:39:22,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:39:22,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1487237502, now seen corresponding path program 214 times [2020-12-17 14:39:22,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:39:22,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967162143] [2020-12-17 14:39:22,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:39:22,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:39:23,106 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:39:23,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967162143] [2020-12-17 14:39:23,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267514320] [2020-12-17 14:39:23,106 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:39:23,198 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 14:39:23,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:39:23,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-17 14:39:23,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:39:23,253 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:39:23,326 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:39:23,360 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:39:23,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:39:23,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-12-17 14:39:23,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391436223] [2020-12-17 14:39:23,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-17 14:39:23,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:39:23,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-17 14:39:23,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=639, Unknown=0, NotChecked=0, Total=756 [2020-12-17 14:39:23,361 INFO L87 Difference]: Start difference. First operand 20000 states. Second operand has 28 states, 28 states have (on average 4.821428571428571) internal successors, (135), 28 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:39:25,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:39:25,968 INFO L93 Difference]: Finished difference Result 20320 states and 44070 transitions. [2020-12-17 14:39:25,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-12-17 14:39:25,970 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.821428571428571) internal successors, (135), 28 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-12-17 14:39:25,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:39:25,992 INFO L225 Difference]: With dead ends: 20320 [2020-12-17 14:39:25,992 INFO L226 Difference]: Without dead ends: 20050 [2020-12-17 14:39:25,992 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1160 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1134, Invalid=3422, Unknown=0, NotChecked=0, Total=4556 [2020-12-17 14:39:25,992 INFO L78 Accepts]: Start accepts. Automaton has 20050 states. Word has length 131 [2020-12-17 14:39:25,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:39:25,993 INFO L481 AbstractCegarLoop]: Abstraction has 20050 states. [2020-12-17 14:39:25,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.821428571428571) internal successors, (135), 28 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:39:25,993 INFO L276 IsEmpty]: Start isEmpty. Operand 20050 states. [2020-12-17 14:39:26,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-17 14:39:26,015 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:39:26,015 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:39:26,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 218 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable222 [2020-12-17 14:39:26,230 INFO L429 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:39:26,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:39:26,231 INFO L82 PathProgramCache]: Analyzing trace with hash 403363376, now seen corresponding path program 215 times [2020-12-17 14:39:26,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:39:26,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819110835] [2020-12-17 14:39:26,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:39:26,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:39:26,788 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:39:26,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819110835] [2020-12-17 14:39:26,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194638157] [2020-12-17 14:39:26,789 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:39:26,873 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-12-17 14:39:26,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:39:26,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-17 14:39:26,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:39:26,951 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:39:26,977 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:39:26,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:39:26,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2020-12-17 14:39:26,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473211650] [2020-12-17 14:39:26,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-17 14:39:26,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:39:26,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-17 14:39:26,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2020-12-17 14:39:26,979 INFO L87 Difference]: Start difference. First operand 20050 states. Second operand has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:39:29,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:39:29,012 INFO L93 Difference]: Finished difference Result 20370 states and 44170 transitions. [2020-12-17 14:39:29,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-12-17 14:39:29,014 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-12-17 14:39:29,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:39:29,037 INFO L225 Difference]: With dead ends: 20370 [2020-12-17 14:39:29,037 INFO L226 Difference]: Without dead ends: 20100 [2020-12-17 14:39:29,038 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1236 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1214, Invalid=3342, Unknown=0, NotChecked=0, Total=4556 [2020-12-17 14:39:29,038 INFO L78 Accepts]: Start accepts. Automaton has 20100 states. Word has length 131 [2020-12-17 14:39:29,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:39:29,038 INFO L481 AbstractCegarLoop]: Abstraction has 20100 states. [2020-12-17 14:39:29,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:39:29,039 INFO L276 IsEmpty]: Start isEmpty. Operand 20100 states. [2020-12-17 14:39:29,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-17 14:39:29,061 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:39:29,061 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:39:29,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 219 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable223 [2020-12-17 14:39:29,274 INFO L429 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:39:29,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:39:29,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1625069824, now seen corresponding path program 216 times [2020-12-17 14:39:29,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:39:29,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341061134] [2020-12-17 14:39:29,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:39:29,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:39:29,889 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:39:29,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341061134] [2020-12-17 14:39:29,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832137641] [2020-12-17 14:39:29,890 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:39:29,997 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2020-12-17 14:39:29,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:39:29,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-17 14:39:30,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:39:30,100 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:39:30,173 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:39:30,192 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:39:30,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:39:30,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-12-17 14:39:30,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011238301] [2020-12-17 14:39:30,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-17 14:39:30,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:39:30,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-17 14:39:30,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=630, Unknown=0, NotChecked=0, Total=756 [2020-12-17 14:39:30,194 INFO L87 Difference]: Start difference. First operand 20100 states. Second operand has 28 states, 28 states have (on average 4.821428571428571) internal successors, (135), 28 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:39:33,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:39:33,073 INFO L93 Difference]: Finished difference Result 20420 states and 44270 transitions. [2020-12-17 14:39:33,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-12-17 14:39:33,074 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.821428571428571) internal successors, (135), 28 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-12-17 14:39:33,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:39:33,099 INFO L225 Difference]: With dead ends: 20420 [2020-12-17 14:39:33,100 INFO L226 Difference]: Without dead ends: 20150 [2020-12-17 14:39:33,100 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1272 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1249, Invalid=3581, Unknown=0, NotChecked=0, Total=4830 [2020-12-17 14:39:33,100 INFO L78 Accepts]: Start accepts. Automaton has 20150 states. Word has length 131 [2020-12-17 14:39:33,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:39:33,101 INFO L481 AbstractCegarLoop]: Abstraction has 20150 states. [2020-12-17 14:39:33,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.821428571428571) internal successors, (135), 28 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:39:33,101 INFO L276 IsEmpty]: Start isEmpty. Operand 20150 states. [2020-12-17 14:39:33,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-17 14:39:33,126 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:39:33,126 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:39:33,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 220 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable224 [2020-12-17 14:39:33,340 INFO L429 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:39:33,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:39:33,341 INFO L82 PathProgramCache]: Analyzing trace with hash 535036462, now seen corresponding path program 217 times [2020-12-17 14:39:33,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:39:33,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156122475] [2020-12-17 14:39:33,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:39:33,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:39:33,970 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:39:33,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156122475] [2020-12-17 14:39:33,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295874588] [2020-12-17 14:39:33,971 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:39:34,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:39:34,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-17 14:39:34,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:39:34,160 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:39:34,188 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:39:34,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:39:34,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2020-12-17 14:39:34,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814503582] [2020-12-17 14:39:34,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-17 14:39:34,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:39:34,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-17 14:39:34,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=565, Unknown=0, NotChecked=0, Total=702 [2020-12-17 14:39:34,190 INFO L87 Difference]: Start difference. First operand 20150 states. Second operand has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:39:36,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:39:36,663 INFO L93 Difference]: Finished difference Result 20470 states and 44370 transitions. [2020-12-17 14:39:36,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-12-17 14:39:36,664 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-12-17 14:39:36,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:39:36,691 INFO L225 Difference]: With dead ends: 20470 [2020-12-17 14:39:36,692 INFO L226 Difference]: Without dead ends: 20200 [2020-12-17 14:39:36,692 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1349 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1343, Invalid=3487, Unknown=0, NotChecked=0, Total=4830 [2020-12-17 14:39:36,692 INFO L78 Accepts]: Start accepts. Automaton has 20200 states. Word has length 131 [2020-12-17 14:39:36,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:39:36,693 INFO L481 AbstractCegarLoop]: Abstraction has 20200 states. [2020-12-17 14:39:36,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:39:36,693 INFO L276 IsEmpty]: Start isEmpty. Operand 20200 states. [2020-12-17 14:39:36,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-17 14:39:36,718 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:39:36,718 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:39:36,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225,221 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:39:36,932 INFO L429 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:39:36,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:39:36,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1454639358, now seen corresponding path program 218 times [2020-12-17 14:39:36,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:39:36,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305294276] [2020-12-17 14:39:36,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:39:36,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:39:37,596 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:39:37,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305294276] [2020-12-17 14:39:37,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609643449] [2020-12-17 14:39:37,597 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:39:37,748 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 14:39:37,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:39:37,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-17 14:39:37,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:39:37,812 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:39:37,886 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:39:37,915 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:39:37,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:39:37,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-12-17 14:39:37,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630987896] [2020-12-17 14:39:37,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-17 14:39:37,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:39:37,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-17 14:39:37,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2020-12-17 14:39:37,917 INFO L87 Difference]: Start difference. First operand 20200 states. Second operand has 28 states, 28 states have (on average 4.821428571428571) internal successors, (135), 28 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:39:40,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:39:40,716 INFO L93 Difference]: Finished difference Result 20680 states and 44870 transitions. [2020-12-17 14:39:40,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-12-17 14:39:40,718 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.821428571428571) internal successors, (135), 28 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-12-17 14:39:40,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:39:40,739 INFO L225 Difference]: With dead ends: 20680 [2020-12-17 14:39:40,740 INFO L226 Difference]: Without dead ends: 20380 [2020-12-17 14:39:40,740 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1388 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1380, Invalid=3732, Unknown=0, NotChecked=0, Total=5112 [2020-12-17 14:39:40,740 INFO L78 Accepts]: Start accepts. Automaton has 20380 states. Word has length 131 [2020-12-17 14:39:40,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:39:40,741 INFO L481 AbstractCegarLoop]: Abstraction has 20380 states. [2020-12-17 14:39:40,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.821428571428571) internal successors, (135), 28 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:39:40,741 INFO L276 IsEmpty]: Start isEmpty. Operand 20380 states. [2020-12-17 14:39:40,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-17 14:39:40,762 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:39:40,762 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:39:40,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 222 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable226 [2020-12-17 14:39:40,977 INFO L429 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:39:40,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:39:40,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1806715276, now seen corresponding path program 219 times [2020-12-17 14:39:40,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:39:40,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064364066] [2020-12-17 14:39:40,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:39:40,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:39:41,538 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:39:41,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064364066] [2020-12-17 14:39:41,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739871254] [2020-12-17 14:39:41,539 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:39:41,666 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2020-12-17 14:39:41,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:39:41,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-17 14:39:41,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:39:41,987 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:39:42,009 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:39:42,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:39:42,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 27 [2020-12-17 14:39:42,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328921138] [2020-12-17 14:39:42,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-17 14:39:42,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:39:42,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-17 14:39:42,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2020-12-17 14:39:42,011 INFO L87 Difference]: Start difference. First operand 20380 states. Second operand has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:39:44,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:39:44,651 INFO L93 Difference]: Finished difference Result 21852 states and 48174 transitions. [2020-12-17 14:39:44,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-12-17 14:39:44,653 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-12-17 14:39:44,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:39:44,675 INFO L225 Difference]: With dead ends: 21852 [2020-12-17 14:39:44,675 INFO L226 Difference]: Without dead ends: 21567 [2020-12-17 14:39:44,676 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1465 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1489, Invalid=3623, Unknown=0, NotChecked=0, Total=5112 [2020-12-17 14:39:44,676 INFO L78 Accepts]: Start accepts. Automaton has 21567 states. Word has length 131 [2020-12-17 14:39:44,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:39:44,676 INFO L481 AbstractCegarLoop]: Abstraction has 21567 states. [2020-12-17 14:39:44,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:39:44,676 INFO L276 IsEmpty]: Start isEmpty. Operand 21567 states. [2020-12-17 14:39:44,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-17 14:39:44,758 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:39:44,758 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:39:44,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227,223 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:39:44,959 INFO L429 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:39:44,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:39:44,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1803742046, now seen corresponding path program 220 times [2020-12-17 14:39:44,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:39:44,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365885909] [2020-12-17 14:39:44,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:39:44,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:39:45,633 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:39:45,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365885909] [2020-12-17 14:39:45,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746295242] [2020-12-17 14:39:45,634 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:39:45,734 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 14:39:45,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:39:45,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-17 14:39:45,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:39:45,789 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:39:45,843 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:39:45,860 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 443 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:39:45,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:39:45,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 28 [2020-12-17 14:39:45,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251097486] [2020-12-17 14:39:45,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-17 14:39:45,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:39:45,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-17 14:39:45,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=600, Unknown=0, NotChecked=0, Total=756 [2020-12-17 14:39:45,862 INFO L87 Difference]: Start difference. First operand 21567 states. Second operand has 28 states, 28 states have (on average 4.785714285714286) internal successors, (134), 28 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:39:49,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:39:49,192 INFO L93 Difference]: Finished difference Result 21500 states and 46911 transitions. [2020-12-17 14:39:49,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-12-17 14:39:49,194 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.785714285714286) internal successors, (134), 28 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2020-12-17 14:39:49,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:39:49,220 INFO L225 Difference]: With dead ends: 21500 [2020-12-17 14:39:49,220 INFO L226 Difference]: Without dead ends: 20815 [2020-12-17 14:39:49,221 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1635 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1574, Invalid=4278, Unknown=0, NotChecked=0, Total=5852 [2020-12-17 14:39:49,221 INFO L78 Accepts]: Start accepts. Automaton has 20815 states. Word has length 131 [2020-12-17 14:39:49,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:39:49,222 INFO L481 AbstractCegarLoop]: Abstraction has 20815 states. [2020-12-17 14:39:49,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.785714285714286) internal successors, (134), 28 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:39:49,222 INFO L276 IsEmpty]: Start isEmpty. Operand 20815 states. [2020-12-17 14:39:49,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-12-17 14:39:49,247 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:39:49,247 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:39:49,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 224 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable228 [2020-12-17 14:39:49,460 INFO L429 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:39:49,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:39:49,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1973284238, now seen corresponding path program 221 times [2020-12-17 14:39:49,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:39:49,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001880260] [2020-12-17 14:39:49,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:39:49,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:39:50,335 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:39:50,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001880260] [2020-12-17 14:39:50,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578045624] [2020-12-17 14:39:50,336 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:39:50,432 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-12-17 14:39:50,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:39:50,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-17 14:39:50,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:39:50,461 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:39:50,543 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:39:50,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:39:50,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-12-17 14:39:50,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88323079] [2020-12-17 14:39:50,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-17 14:39:50,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:39:50,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-17 14:39:50,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2020-12-17 14:39:50,545 INFO L87 Difference]: Start difference. First operand 20815 states. Second operand has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:39:51,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:39:51,985 INFO L93 Difference]: Finished difference Result 21135 states and 45930 transitions. [2020-12-17 14:39:51,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-12-17 14:39:51,987 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-12-17 14:39:51,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:39:52,016 INFO L225 Difference]: With dead ends: 21135 [2020-12-17 14:39:52,016 INFO L226 Difference]: Without dead ends: 20865 [2020-12-17 14:39:52,016 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=730, Invalid=1922, Unknown=0, NotChecked=0, Total=2652 [2020-12-17 14:39:52,016 INFO L78 Accepts]: Start accepts. Automaton has 20865 states. Word has length 136 [2020-12-17 14:39:52,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:39:52,017 INFO L481 AbstractCegarLoop]: Abstraction has 20865 states. [2020-12-17 14:39:52,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:39:52,017 INFO L276 IsEmpty]: Start isEmpty. Operand 20865 states. [2020-12-17 14:39:52,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-12-17 14:39:52,044 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:39:52,045 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:39:52,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229,225 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:39:52,258 INFO L429 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:39:52,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:39:52,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1909367740, now seen corresponding path program 222 times [2020-12-17 14:39:52,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:39:52,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678141821] [2020-12-17 14:39:52,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:39:52,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:39:53,354 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:39:53,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678141821] [2020-12-17 14:39:53,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912980051] [2020-12-17 14:39:53,354 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:39:53,457 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-12-17 14:39:53,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:39:53,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-17 14:39:53,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:39:53,504 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:39:53,526 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:39:53,569 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:39:53,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:39:53,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-12-17 14:39:53,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183980632] [2020-12-17 14:39:53,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-17 14:39:53,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:39:53,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-17 14:39:53,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=601, Unknown=0, NotChecked=0, Total=756 [2020-12-17 14:39:53,571 INFO L87 Difference]: Start difference. First operand 20865 states. Second operand has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:39:55,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:39:55,295 INFO L93 Difference]: Finished difference Result 21185 states and 46030 transitions. [2020-12-17 14:39:55,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-12-17 14:39:55,297 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-12-17 14:39:55,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:39:55,321 INFO L225 Difference]: With dead ends: 21185 [2020-12-17 14:39:55,321 INFO L226 Difference]: Without dead ends: 20915 [2020-12-17 14:39:55,322 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=801, Invalid=2279, Unknown=0, NotChecked=0, Total=3080 [2020-12-17 14:39:55,322 INFO L78 Accepts]: Start accepts. Automaton has 20915 states. Word has length 136 [2020-12-17 14:39:55,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:39:55,322 INFO L481 AbstractCegarLoop]: Abstraction has 20915 states. [2020-12-17 14:39:55,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:39:55,322 INFO L276 IsEmpty]: Start isEmpty. Operand 20915 states. [2020-12-17 14:39:55,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-12-17 14:39:55,347 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:39:55,347 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:39:55,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230,226 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:39:55,560 INFO L429 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:39:55,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:39:55,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1610756958, now seen corresponding path program 223 times [2020-12-17 14:39:55,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:39:55,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483611920] [2020-12-17 14:39:55,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:39:55,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:39:56,341 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:39:56,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483611920] [2020-12-17 14:39:56,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129421614] [2020-12-17 14:39:56,341 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:39:56,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:39:56,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-17 14:39:56,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:39:56,448 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:39:56,489 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:39:56,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:39:56,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-12-17 14:39:56,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347535719] [2020-12-17 14:39:56,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-17 14:39:56,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:39:56,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-17 14:39:56,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2020-12-17 14:39:56,491 INFO L87 Difference]: Start difference. First operand 20915 states. Second operand has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:39:58,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:39:58,116 INFO L93 Difference]: Finished difference Result 21235 states and 46130 transitions. [2020-12-17 14:39:58,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-17 14:39:58,117 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-12-17 14:39:58,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:39:58,139 INFO L225 Difference]: With dead ends: 21235 [2020-12-17 14:39:58,139 INFO L226 Difference]: Without dead ends: 20965 [2020-12-17 14:39:58,139 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=733, Invalid=2129, Unknown=0, NotChecked=0, Total=2862 [2020-12-17 14:39:58,140 INFO L78 Accepts]: Start accepts. Automaton has 20965 states. Word has length 136 [2020-12-17 14:39:58,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:39:58,140 INFO L481 AbstractCegarLoop]: Abstraction has 20965 states. [2020-12-17 14:39:58,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:39:58,140 INFO L276 IsEmpty]: Start isEmpty. Operand 20965 states. [2020-12-17 14:39:58,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-12-17 14:39:58,158 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:39:58,158 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:39:58,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231,227 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:39:58,359 INFO L429 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:39:58,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:39:58,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1318315474, now seen corresponding path program 224 times [2020-12-17 14:39:58,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:39:58,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973260187] [2020-12-17 14:39:58,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:39:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:39:59,266 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:39:59,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973260187] [2020-12-17 14:39:59,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168492555] [2020-12-17 14:39:59,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:39:59,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 14:39:59,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:39:59,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-17 14:39:59,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:39:59,420 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:39:59,443 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:39:59,512 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:39:59,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:39:59,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-12-17 14:39:59,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798816799] [2020-12-17 14:39:59,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-17 14:39:59,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:39:59,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-17 14:39:59,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=618, Unknown=0, NotChecked=0, Total=756 [2020-12-17 14:39:59,513 INFO L87 Difference]: Start difference. First operand 20965 states. Second operand has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:40:01,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:40:01,609 INFO L93 Difference]: Finished difference Result 21285 states and 46230 transitions. [2020-12-17 14:40:01,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-12-17 14:40:01,610 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-12-17 14:40:01,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:40:01,635 INFO L225 Difference]: With dead ends: 21285 [2020-12-17 14:40:01,636 INFO L226 Difference]: Without dead ends: 21015 [2020-12-17 14:40:01,636 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 632 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=812, Invalid=2494, Unknown=0, NotChecked=0, Total=3306 [2020-12-17 14:40:01,636 INFO L78 Accepts]: Start accepts. Automaton has 21015 states. Word has length 136 [2020-12-17 14:40:01,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:40:01,637 INFO L481 AbstractCegarLoop]: Abstraction has 21015 states. [2020-12-17 14:40:01,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:40:01,637 INFO L276 IsEmpty]: Start isEmpty. Operand 21015 states. [2020-12-17 14:40:01,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-12-17 14:40:01,662 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:40:01,663 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:40:01,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232,228 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:40:01,876 INFO L429 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:40:01,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:40:01,877 INFO L82 PathProgramCache]: Analyzing trace with hash -711788324, now seen corresponding path program 225 times [2020-12-17 14:40:01,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:40:01,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260084190] [2020-12-17 14:40:01,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:40:01,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:40:02,708 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:40:02,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260084190] [2020-12-17 14:40:02,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818673872] [2020-12-17 14:40:02,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:40:02,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2020-12-17 14:40:02,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:40:02,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-17 14:40:02,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:40:02,859 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:40:02,907 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:40:02,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:40:02,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-12-17 14:40:02,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741393845] [2020-12-17 14:40:02,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-17 14:40:02,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:40:02,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-17 14:40:02,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=572, Unknown=0, NotChecked=0, Total=702 [2020-12-17 14:40:02,909 INFO L87 Difference]: Start difference. First operand 21015 states. Second operand has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:40:04,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:40:04,713 INFO L93 Difference]: Finished difference Result 21335 states and 46330 transitions. [2020-12-17 14:40:04,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-12-17 14:40:04,714 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-12-17 14:40:04,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:40:04,743 INFO L225 Difference]: With dead ends: 21335 [2020-12-17 14:40:04,743 INFO L226 Difference]: Without dead ends: 21065 [2020-12-17 14:40:04,743 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=752, Invalid=2328, Unknown=0, NotChecked=0, Total=3080 [2020-12-17 14:40:04,744 INFO L78 Accepts]: Start accepts. Automaton has 21065 states. Word has length 136 [2020-12-17 14:40:04,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:40:04,744 INFO L481 AbstractCegarLoop]: Abstraction has 21065 states. [2020-12-17 14:40:04,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:40:04,744 INFO L276 IsEmpty]: Start isEmpty. Operand 21065 states. [2020-12-17 14:40:04,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-12-17 14:40:04,771 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:40:04,771 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:40:04,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 229 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable233 [2020-12-17 14:40:04,986 INFO L429 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:40:04,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:40:04,987 INFO L82 PathProgramCache]: Analyzing trace with hash -904387668, now seen corresponding path program 226 times [2020-12-17 14:40:04,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:40:04,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071841405] [2020-12-17 14:40:04,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:40:05,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:40:05,875 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:40:05,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071841405] [2020-12-17 14:40:05,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874845716] [2020-12-17 14:40:05,875 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:40:05,956 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 14:40:05,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:40:05,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-17 14:40:05,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:40:06,006 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:40:06,085 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:40:06,124 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:40:06,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:40:06,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-12-17 14:40:06,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683048149] [2020-12-17 14:40:06,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-17 14:40:06,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:40:06,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-17 14:40:06,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=631, Unknown=0, NotChecked=0, Total=756 [2020-12-17 14:40:06,126 INFO L87 Difference]: Start difference. First operand 21065 states. Second operand has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:40:08,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:40:08,061 INFO L93 Difference]: Finished difference Result 21385 states and 46430 transitions. [2020-12-17 14:40:08,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-12-17 14:40:08,062 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-12-17 14:40:08,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:40:08,085 INFO L225 Difference]: With dead ends: 21385 [2020-12-17 14:40:08,085 INFO L226 Difference]: Without dead ends: 21115 [2020-12-17 14:40:08,086 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=839, Invalid=2701, Unknown=0, NotChecked=0, Total=3540 [2020-12-17 14:40:08,086 INFO L78 Accepts]: Start accepts. Automaton has 21115 states. Word has length 136 [2020-12-17 14:40:08,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:40:08,086 INFO L481 AbstractCegarLoop]: Abstraction has 21115 states. [2020-12-17 14:40:08,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:40:08,086 INFO L276 IsEmpty]: Start isEmpty. Operand 21115 states. [2020-12-17 14:40:08,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-12-17 14:40:08,110 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:40:08,110 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:40:08,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 230 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable234 [2020-12-17 14:40:08,323 INFO L429 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:40:08,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:40:08,324 INFO L82 PathProgramCache]: Analyzing trace with hash 748086234, now seen corresponding path program 227 times [2020-12-17 14:40:08,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:40:08,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263032076] [2020-12-17 14:40:08,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:40:08,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:40:09,048 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:40:09,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263032076] [2020-12-17 14:40:09,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961755641] [2020-12-17 14:40:09,049 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:40:09,134 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-12-17 14:40:09,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:40:09,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-17 14:40:09,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:40:09,166 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:40:09,238 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:40:09,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:40:09,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-12-17 14:40:09,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981902364] [2020-12-17 14:40:09,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-17 14:40:09,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:40:09,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-17 14:40:09,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2020-12-17 14:40:09,239 INFO L87 Difference]: Start difference. First operand 21115 states. Second operand has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:40:11,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:40:11,051 INFO L93 Difference]: Finished difference Result 21435 states and 46530 transitions. [2020-12-17 14:40:11,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-12-17 14:40:11,052 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-12-17 14:40:11,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:40:11,071 INFO L225 Difference]: With dead ends: 21435 [2020-12-17 14:40:11,071 INFO L226 Difference]: Without dead ends: 21165 [2020-12-17 14:40:11,072 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 697 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=787, Invalid=2519, Unknown=0, NotChecked=0, Total=3306 [2020-12-17 14:40:11,072 INFO L78 Accepts]: Start accepts. Automaton has 21165 states. Word has length 136 [2020-12-17 14:40:11,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:40:11,072 INFO L481 AbstractCegarLoop]: Abstraction has 21165 states. [2020-12-17 14:40:11,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:40:11,072 INFO L276 IsEmpty]: Start isEmpty. Operand 21165 states. [2020-12-17 14:40:11,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-12-17 14:40:11,088 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:40:11,089 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:40:11,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 231 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable235 [2020-12-17 14:40:11,289 INFO L429 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:40:11,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:40:11,290 INFO L82 PathProgramCache]: Analyzing trace with hash 213668522, now seen corresponding path program 228 times [2020-12-17 14:40:11,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:40:11,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729304765] [2020-12-17 14:40:11,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:40:11,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:40:12,155 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:40:12,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729304765] [2020-12-17 14:40:12,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775843326] [2020-12-17 14:40:12,156 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:40:12,273 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-12-17 14:40:12,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:40:12,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-17 14:40:12,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:40:12,328 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:40:12,357 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:40:12,401 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:40:12,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:40:12,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-12-17 14:40:12,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285359893] [2020-12-17 14:40:12,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-17 14:40:12,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:40:12,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-17 14:40:12,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=640, Unknown=0, NotChecked=0, Total=756 [2020-12-17 14:40:12,403 INFO L87 Difference]: Start difference. First operand 21165 states. Second operand has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:40:14,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:40:14,650 INFO L93 Difference]: Finished difference Result 21485 states and 46630 transitions. [2020-12-17 14:40:14,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-12-17 14:40:14,651 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-12-17 14:40:14,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:40:14,678 INFO L225 Difference]: With dead ends: 21485 [2020-12-17 14:40:14,678 INFO L226 Difference]: Without dead ends: 21215 [2020-12-17 14:40:14,678 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 800 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=882, Invalid=2900, Unknown=0, NotChecked=0, Total=3782 [2020-12-17 14:40:14,679 INFO L78 Accepts]: Start accepts. Automaton has 21215 states. Word has length 136 [2020-12-17 14:40:14,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:40:14,679 INFO L481 AbstractCegarLoop]: Abstraction has 21215 states. [2020-12-17 14:40:14,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:40:14,679 INFO L276 IsEmpty]: Start isEmpty. Operand 21215 states. [2020-12-17 14:40:14,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-12-17 14:40:14,704 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:40:14,704 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:40:14,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236,232 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:40:14,917 INFO L429 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:40:14,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:40:14,918 INFO L82 PathProgramCache]: Analyzing trace with hash 238474328, now seen corresponding path program 229 times [2020-12-17 14:40:14,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:40:14,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691809788] [2020-12-17 14:40:14,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:40:14,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:40:15,751 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:40:15,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691809788] [2020-12-17 14:40:15,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178635882] [2020-12-17 14:40:15,752 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:40:15,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:40:15,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-17 14:40:15,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:40:15,894 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:40:15,938 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:40:15,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:40:15,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-12-17 14:40:15,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782026921] [2020-12-17 14:40:15,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-17 14:40:15,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:40:15,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-17 14:40:15,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=588, Unknown=0, NotChecked=0, Total=702 [2020-12-17 14:40:15,940 INFO L87 Difference]: Start difference. First operand 21215 states. Second operand has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:40:17,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:40:17,917 INFO L93 Difference]: Finished difference Result 21535 states and 46730 transitions. [2020-12-17 14:40:17,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-12-17 14:40:17,919 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-12-17 14:40:17,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:40:17,948 INFO L225 Difference]: With dead ends: 21535 [2020-12-17 14:40:17,948 INFO L226 Difference]: Without dead ends: 21265 [2020-12-17 14:40:17,948 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 780 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=838, Invalid=2702, Unknown=0, NotChecked=0, Total=3540 [2020-12-17 14:40:17,948 INFO L78 Accepts]: Start accepts. Automaton has 21265 states. Word has length 136 [2020-12-17 14:40:17,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:40:17,949 INFO L481 AbstractCegarLoop]: Abstraction has 21265 states. [2020-12-17 14:40:17,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:40:17,949 INFO L276 IsEmpty]: Start isEmpty. Operand 21265 states. [2020-12-17 14:40:18,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-12-17 14:40:18,024 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:40:18,024 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:40:18,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 233 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable237 [2020-12-17 14:40:18,230 INFO L429 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:40:18,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:40:18,231 INFO L82 PathProgramCache]: Analyzing trace with hash 348227368, now seen corresponding path program 230 times [2020-12-17 14:40:18,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:40:18,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605701444] [2020-12-17 14:40:18,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:40:18,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:40:19,002 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:40:19,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605701444] [2020-12-17 14:40:19,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549878474] [2020-12-17 14:40:19,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:40:19,084 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 14:40:19,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:40:19,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-17 14:40:19,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:40:19,187 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:40:19,214 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:40:19,249 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:40:19,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:40:19,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-12-17 14:40:19,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001089186] [2020-12-17 14:40:19,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-17 14:40:19,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:40:19,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-17 14:40:19,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=645, Unknown=0, NotChecked=0, Total=756 [2020-12-17 14:40:19,251 INFO L87 Difference]: Start difference. First operand 21265 states. Second operand has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:40:21,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:40:21,587 INFO L93 Difference]: Finished difference Result 21585 states and 46830 transitions. [2020-12-17 14:40:21,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-12-17 14:40:21,588 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-12-17 14:40:21,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:40:21,616 INFO L225 Difference]: With dead ends: 21585 [2020-12-17 14:40:21,617 INFO L226 Difference]: Without dead ends: 21315 [2020-12-17 14:40:21,617 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=941, Invalid=3091, Unknown=0, NotChecked=0, Total=4032 [2020-12-17 14:40:21,617 INFO L78 Accepts]: Start accepts. Automaton has 21315 states. Word has length 136 [2020-12-17 14:40:21,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:40:21,618 INFO L481 AbstractCegarLoop]: Abstraction has 21315 states. [2020-12-17 14:40:21,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:40:21,618 INFO L276 IsEmpty]: Start isEmpty. Operand 21315 states. [2020-12-17 14:40:21,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-12-17 14:40:21,690 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:40:21,690 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:40:21,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238,234 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:40:21,890 INFO L429 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:40:21,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:40:21,891 INFO L82 PathProgramCache]: Analyzing trace with hash -147609002, now seen corresponding path program 231 times [2020-12-17 14:40:21,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:40:21,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608259374] [2020-12-17 14:40:21,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:40:21,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:40:22,559 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:40:22,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608259374] [2020-12-17 14:40:22,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652344136] [2020-12-17 14:40:22,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:40:22,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2020-12-17 14:40:22,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:40:22,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-17 14:40:22,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:40:22,859 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:40:22,939 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:40:22,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:40:22,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-12-17 14:40:22,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186698226] [2020-12-17 14:40:22,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-17 14:40:22,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:40:22,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-17 14:40:22,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2020-12-17 14:40:22,941 INFO L87 Difference]: Start difference. First operand 21315 states. Second operand has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:40:25,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:40:25,295 INFO L93 Difference]: Finished difference Result 21635 states and 46930 transitions. [2020-12-17 14:40:25,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-12-17 14:40:25,297 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-12-17 14:40:25,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:40:25,321 INFO L225 Difference]: With dead ends: 21635 [2020-12-17 14:40:25,321 INFO L226 Difference]: Without dead ends: 21365 [2020-12-17 14:40:25,321 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 867 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=905, Invalid=2877, Unknown=0, NotChecked=0, Total=3782 [2020-12-17 14:40:25,321 INFO L78 Accepts]: Start accepts. Automaton has 21365 states. Word has length 136 [2020-12-17 14:40:25,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:40:25,322 INFO L481 AbstractCegarLoop]: Abstraction has 21365 states. [2020-12-17 14:40:25,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:40:25,322 INFO L276 IsEmpty]: Start isEmpty. Operand 21365 states. [2020-12-17 14:40:25,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-12-17 14:40:25,345 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:40:25,345 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:40:25,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 235 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable239 [2020-12-17 14:40:25,546 INFO L429 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:40:25,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:40:25,547 INFO L82 PathProgramCache]: Analyzing trace with hash 556310822, now seen corresponding path program 232 times [2020-12-17 14:40:25,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:40:25,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439323492] [2020-12-17 14:40:25,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:40:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:40:26,396 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:40:26,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439323492] [2020-12-17 14:40:26,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680604613] [2020-12-17 14:40:26,396 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:40:26,493 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 14:40:26,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:40:26,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-17 14:40:26,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:40:26,547 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:40:26,575 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:40:26,598 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:40:26,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:40:26,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-12-17 14:40:26,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055137725] [2020-12-17 14:40:26,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-17 14:40:26,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:40:26,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-17 14:40:26,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=646, Unknown=0, NotChecked=0, Total=756 [2020-12-17 14:40:26,600 INFO L87 Difference]: Start difference. First operand 21365 states. Second operand has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:40:29,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:40:29,352 INFO L93 Difference]: Finished difference Result 21685 states and 47030 transitions. [2020-12-17 14:40:29,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-12-17 14:40:29,354 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-12-17 14:40:29,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:40:29,379 INFO L225 Difference]: With dead ends: 21685 [2020-12-17 14:40:29,379 INFO L226 Difference]: Without dead ends: 21415 [2020-12-17 14:40:29,380 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 984 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1016, Invalid=3274, Unknown=0, NotChecked=0, Total=4290 [2020-12-17 14:40:29,380 INFO L78 Accepts]: Start accepts. Automaton has 21415 states. Word has length 136 [2020-12-17 14:40:29,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:40:29,380 INFO L481 AbstractCegarLoop]: Abstraction has 21415 states. [2020-12-17 14:40:29,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:40:29,381 INFO L276 IsEmpty]: Start isEmpty. Operand 21415 states. [2020-12-17 14:40:29,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-12-17 14:40:29,406 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:40:29,406 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:40:29,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240,236 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:40:29,621 INFO L429 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:40:29,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:40:29,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1441154516, now seen corresponding path program 233 times [2020-12-17 14:40:29,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:40:29,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106670581] [2020-12-17 14:40:29,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:40:29,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:40:30,349 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:40:30,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106670581] [2020-12-17 14:40:30,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759655947] [2020-12-17 14:40:30,350 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:40:30,447 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-12-17 14:40:30,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:40:30,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-17 14:40:30,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:40:30,494 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:40:30,534 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:40:30,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:40:30,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-12-17 14:40:30,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805159069] [2020-12-17 14:40:30,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-17 14:40:30,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:40:30,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-17 14:40:30,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=588, Unknown=0, NotChecked=0, Total=702 [2020-12-17 14:40:30,536 INFO L87 Difference]: Start difference. First operand 21415 states. Second operand has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:40:32,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:40:32,919 INFO L93 Difference]: Finished difference Result 21735 states and 47130 transitions. [2020-12-17 14:40:32,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-12-17 14:40:32,920 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-12-17 14:40:32,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:40:32,948 INFO L225 Difference]: With dead ends: 21735 [2020-12-17 14:40:32,948 INFO L226 Difference]: Without dead ends: 21465 [2020-12-17 14:40:32,949 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 958 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=988, Invalid=3044, Unknown=0, NotChecked=0, Total=4032 [2020-12-17 14:40:32,949 INFO L78 Accepts]: Start accepts. Automaton has 21465 states. Word has length 136 [2020-12-17 14:40:32,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:40:32,949 INFO L481 AbstractCegarLoop]: Abstraction has 21465 states. [2020-12-17 14:40:32,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:40:32,950 INFO L276 IsEmpty]: Start isEmpty. Operand 21465 states. [2020-12-17 14:40:32,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-12-17 14:40:32,976 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:40:32,976 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:40:33,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241,237 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:40:33,190 INFO L429 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:40:33,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:40:33,191 INFO L82 PathProgramCache]: Analyzing trace with hash 847937700, now seen corresponding path program 234 times [2020-12-17 14:40:33,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:40:33,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212503792] [2020-12-17 14:40:33,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:40:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:40:33,987 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:40:33,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212503792] [2020-12-17 14:40:33,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299839136] [2020-12-17 14:40:33,988 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:40:34,098 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-12-17 14:40:34,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:40:34,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-17 14:40:34,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:40:34,155 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:40:34,186 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:40:34,223 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:40:34,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:40:34,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-12-17 14:40:34,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524061403] [2020-12-17 14:40:34,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-17 14:40:34,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:40:34,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-17 14:40:34,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=643, Unknown=0, NotChecked=0, Total=756 [2020-12-17 14:40:34,225 INFO L87 Difference]: Start difference. First operand 21465 states. Second operand has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:40:37,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:40:37,029 INFO L93 Difference]: Finished difference Result 21785 states and 47230 transitions. [2020-12-17 14:40:37,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-12-17 14:40:37,030 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-12-17 14:40:37,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:40:37,055 INFO L225 Difference]: With dead ends: 21785 [2020-12-17 14:40:37,056 INFO L226 Difference]: Without dead ends: 21515 [2020-12-17 14:40:37,056 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1082 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1107, Invalid=3449, Unknown=0, NotChecked=0, Total=4556 [2020-12-17 14:40:37,056 INFO L78 Accepts]: Start accepts. Automaton has 21515 states. Word has length 136 [2020-12-17 14:40:37,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:40:37,057 INFO L481 AbstractCegarLoop]: Abstraction has 21515 states. [2020-12-17 14:40:37,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:40:37,057 INFO L276 IsEmpty]: Start isEmpty. Operand 21515 states. [2020-12-17 14:40:37,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-12-17 14:40:37,081 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:40:37,081 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:40:37,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242,238 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:40:37,296 INFO L429 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:40:37,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:40:37,297 INFO L82 PathProgramCache]: Analyzing trace with hash 675251922, now seen corresponding path program 235 times [2020-12-17 14:40:37,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:40:37,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631236306] [2020-12-17 14:40:37,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:40:37,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:40:37,943 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:40:37,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631236306] [2020-12-17 14:40:37,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249161346] [2020-12-17 14:40:37,944 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:40:38,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:40:38,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-17 14:40:38,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:40:38,142 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:40:38,172 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:40:38,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:40:38,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-12-17 14:40:38,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101305716] [2020-12-17 14:40:38,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-17 14:40:38,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:40:38,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-17 14:40:38,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2020-12-17 14:40:38,173 INFO L87 Difference]: Start difference. First operand 21515 states. Second operand has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:40:40,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:40:40,433 INFO L93 Difference]: Finished difference Result 21835 states and 47330 transitions. [2020-12-17 14:40:40,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-12-17 14:40:40,435 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-12-17 14:40:40,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:40:40,457 INFO L225 Difference]: With dead ends: 21835 [2020-12-17 14:40:40,457 INFO L226 Difference]: Without dead ends: 21565 [2020-12-17 14:40:40,458 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1053 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1087, Invalid=3203, Unknown=0, NotChecked=0, Total=4290 [2020-12-17 14:40:40,458 INFO L78 Accepts]: Start accepts. Automaton has 21565 states. Word has length 136 [2020-12-17 14:40:40,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:40:40,458 INFO L481 AbstractCegarLoop]: Abstraction has 21565 states. [2020-12-17 14:40:40,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:40:40,458 INFO L276 IsEmpty]: Start isEmpty. Operand 21565 states. [2020-12-17 14:40:40,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-12-17 14:40:40,477 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:40:40,477 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:40:40,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 239 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable243 [2020-12-17 14:40:40,677 INFO L429 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:40:40,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:40:40,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1458043486, now seen corresponding path program 236 times [2020-12-17 14:40:40,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:40:40,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044635214] [2020-12-17 14:40:40,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:40:40,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:40:41,485 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:40:41,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044635214] [2020-12-17 14:40:41,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266094527] [2020-12-17 14:40:41,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:40:41,585 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 14:40:41,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:40:41,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-17 14:40:41,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:40:41,641 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:40:41,674 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:40:41,694 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:40:41,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:40:41,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-12-17 14:40:41,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533373587] [2020-12-17 14:40:41,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-17 14:40:41,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:40:41,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-17 14:40:41,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=636, Unknown=0, NotChecked=0, Total=756 [2020-12-17 14:40:41,695 INFO L87 Difference]: Start difference. First operand 21565 states. Second operand has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:40:44,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:40:44,943 INFO L93 Difference]: Finished difference Result 21885 states and 47430 transitions. [2020-12-17 14:40:44,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-12-17 14:40:44,944 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-12-17 14:40:44,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:40:44,971 INFO L225 Difference]: With dead ends: 21885 [2020-12-17 14:40:44,971 INFO L226 Difference]: Without dead ends: 21615 [2020-12-17 14:40:44,971 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1184 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1214, Invalid=3616, Unknown=0, NotChecked=0, Total=4830 [2020-12-17 14:40:44,971 INFO L78 Accepts]: Start accepts. Automaton has 21615 states. Word has length 136 [2020-12-17 14:40:44,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:40:44,972 INFO L481 AbstractCegarLoop]: Abstraction has 21615 states. [2020-12-17 14:40:44,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:40:44,972 INFO L276 IsEmpty]: Start isEmpty. Operand 21615 states. [2020-12-17 14:40:44,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-12-17 14:40:44,997 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:40:44,997 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:40:45,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 240 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable244 [2020-12-17 14:40:45,211 INFO L429 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:40:45,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:40:45,212 INFO L82 PathProgramCache]: Analyzing trace with hash 432557392, now seen corresponding path program 237 times [2020-12-17 14:40:45,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:40:45,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019332876] [2020-12-17 14:40:45,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:40:45,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:40:45,928 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:40:45,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019332876] [2020-12-17 14:40:45,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140810673] [2020-12-17 14:40:45,928 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 241 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 241 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:40:46,040 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2020-12-17 14:40:46,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:40:46,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-17 14:40:46,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:40:46,094 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:40:46,127 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:40:46,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:40:46,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-12-17 14:40:46,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511728806] [2020-12-17 14:40:46,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-17 14:40:46,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:40:46,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-17 14:40:46,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=572, Unknown=0, NotChecked=0, Total=702 [2020-12-17 14:40:46,129 INFO L87 Difference]: Start difference. First operand 21615 states. Second operand has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:40:48,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:40:48,813 INFO L93 Difference]: Finished difference Result 21935 states and 47530 transitions. [2020-12-17 14:40:48,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-12-17 14:40:48,814 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-12-17 14:40:48,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:40:48,842 INFO L225 Difference]: With dead ends: 21935 [2020-12-17 14:40:48,842 INFO L226 Difference]: Without dead ends: 21665 [2020-12-17 14:40:48,843 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1152 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1202, Invalid=3354, Unknown=0, NotChecked=0, Total=4556 [2020-12-17 14:40:48,843 INFO L78 Accepts]: Start accepts. Automaton has 21665 states. Word has length 136 [2020-12-17 14:40:48,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:40:48,843 INFO L481 AbstractCegarLoop]: Abstraction has 21665 states. [2020-12-17 14:40:48,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:40:48,844 INFO L276 IsEmpty]: Start isEmpty. Operand 21665 states. [2020-12-17 14:40:48,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-12-17 14:40:48,870 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:40:48,870 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:40:49,084 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 241 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable245 [2020-12-17 14:40:49,084 INFO L429 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:40:49,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:40:49,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1654263840, now seen corresponding path program 238 times [2020-12-17 14:40:49,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:40:49,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801590742] [2020-12-17 14:40:49,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:40:49,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:40:49,975 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:40:49,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801590742] [2020-12-17 14:40:49,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002480768] [2020-12-17 14:40:49,976 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 242 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 242 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:40:50,067 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 14:40:50,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:40:50,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-17 14:40:50,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:40:50,133 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:40:50,166 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:40:50,199 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:40:50,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:40:50,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-12-17 14:40:50,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393407091] [2020-12-17 14:40:50,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-17 14:40:50,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:40:50,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-17 14:40:50,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=625, Unknown=0, NotChecked=0, Total=756 [2020-12-17 14:40:50,201 INFO L87 Difference]: Start difference. First operand 21665 states. Second operand has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:40:53,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:40:53,392 INFO L93 Difference]: Finished difference Result 21985 states and 47630 transitions. [2020-12-17 14:40:53,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-12-17 14:40:53,394 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-12-17 14:40:53,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:40:53,419 INFO L225 Difference]: With dead ends: 21985 [2020-12-17 14:40:53,419 INFO L226 Difference]: Without dead ends: 21715 [2020-12-17 14:40:53,420 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1290 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1337, Invalid=3775, Unknown=0, NotChecked=0, Total=5112 [2020-12-17 14:40:53,420 INFO L78 Accepts]: Start accepts. Automaton has 21715 states. Word has length 136 [2020-12-17 14:40:53,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:40:53,420 INFO L481 AbstractCegarLoop]: Abstraction has 21715 states. [2020-12-17 14:40:53,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:40:53,421 INFO L276 IsEmpty]: Start isEmpty. Operand 21715 states. [2020-12-17 14:40:53,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-12-17 14:40:53,445 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:40:53,445 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:40:53,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 242 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable246 [2020-12-17 14:40:53,659 INFO L429 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:40:53,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:40:53,660 INFO L82 PathProgramCache]: Analyzing trace with hash 564230478, now seen corresponding path program 239 times [2020-12-17 14:40:53,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:40:53,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489767742] [2020-12-17 14:40:53,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:40:53,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:40:54,363 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:40:54,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489767742] [2020-12-17 14:40:54,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958074394] [2020-12-17 14:40:54,364 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 243 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 243 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:40:54,452 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-12-17 14:40:54,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:40:54,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-17 14:40:54,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:40:54,503 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:40:54,529 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:40:54,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:40:54,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-12-17 14:40:54,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408062967] [2020-12-17 14:40:54,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-17 14:40:54,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:40:54,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-17 14:40:54,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2020-12-17 14:40:54,531 INFO L87 Difference]: Start difference. First operand 21715 states. Second operand has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:40:57,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:40:57,284 INFO L93 Difference]: Finished difference Result 22035 states and 47730 transitions. [2020-12-17 14:40:57,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-12-17 14:40:57,286 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-12-17 14:40:57,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:40:57,303 INFO L225 Difference]: With dead ends: 22035 [2020-12-17 14:40:57,303 INFO L226 Difference]: Without dead ends: 21765 [2020-12-17 14:40:57,304 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1255 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1333, Invalid=3497, Unknown=0, NotChecked=0, Total=4830 [2020-12-17 14:40:57,304 INFO L78 Accepts]: Start accepts. Automaton has 21765 states. Word has length 136 [2020-12-17 14:40:57,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:40:57,304 INFO L481 AbstractCegarLoop]: Abstraction has 21765 states. [2020-12-17 14:40:57,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:40:57,304 INFO L276 IsEmpty]: Start isEmpty. Operand 21765 states. [2020-12-17 14:40:57,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-12-17 14:40:57,319 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:40:57,319 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:40:57,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 243 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable247 [2020-12-17 14:40:57,520 INFO L429 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:40:57,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:40:57,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1483833374, now seen corresponding path program 240 times [2020-12-17 14:40:57,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:40:57,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329373475] [2020-12-17 14:40:57,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:40:57,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:40:58,262 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:40:58,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329373475] [2020-12-17 14:40:58,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478519313] [2020-12-17 14:40:58,262 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 244 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 244 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:40:58,371 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-12-17 14:40:58,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:40:58,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-17 14:40:58,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:40:58,428 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:40:58,461 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:40:58,480 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:40:58,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:40:58,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-12-17 14:40:58,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535259636] [2020-12-17 14:40:58,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-17 14:40:58,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:40:58,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-17 14:40:58,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=610, Unknown=0, NotChecked=0, Total=756 [2020-12-17 14:40:58,481 INFO L87 Difference]: Start difference. First operand 21765 states. Second operand has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:41:02,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:41:02,127 INFO L93 Difference]: Finished difference Result 22125 states and 47910 transitions. [2020-12-17 14:41:02,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-12-17 14:41:02,129 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-12-17 14:41:02,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:41:02,157 INFO L225 Difference]: With dead ends: 22125 [2020-12-17 14:41:02,158 INFO L226 Difference]: Without dead ends: 21855 [2020-12-17 14:41:02,158 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1400 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1476, Invalid=3926, Unknown=0, NotChecked=0, Total=5402 [2020-12-17 14:41:02,158 INFO L78 Accepts]: Start accepts. Automaton has 21855 states. Word has length 136 [2020-12-17 14:41:02,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:41:02,159 INFO L481 AbstractCegarLoop]: Abstraction has 21855 states. [2020-12-17 14:41:02,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:41:02,159 INFO L276 IsEmpty]: Start isEmpty. Operand 21855 states. [2020-12-17 14:41:02,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-12-17 14:41:02,185 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:41:02,185 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:41:02,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248,244 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:41:02,400 INFO L429 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:41:02,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:41:02,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1835909292, now seen corresponding path program 241 times [2020-12-17 14:41:02,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:41:02,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609412504] [2020-12-17 14:41:02,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:41:02,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:41:03,130 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:41:03,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609412504] [2020-12-17 14:41:03,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89628740] [2020-12-17 14:41:03,131 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:41:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:41:03,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-17 14:41:03,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:41:03,338 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:41:03,369 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:41:03,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:41:03,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-12-17 14:41:03,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713660536] [2020-12-17 14:41:03,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-12-17 14:41:03,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:41:03,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-12-17 14:41:03,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2020-12-17 14:41:03,371 INFO L87 Difference]: Start difference. First operand 21855 states. Second operand has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:41:06,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:41:06,279 INFO L93 Difference]: Finished difference Result 23327 states and 51274 transitions. [2020-12-17 14:41:06,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-12-17 14:41:06,280 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-12-17 14:41:06,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:41:06,369 INFO L225 Difference]: With dead ends: 23327 [2020-12-17 14:41:06,369 INFO L226 Difference]: Without dead ends: 23057 [2020-12-17 14:41:06,370 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1361 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1481, Invalid=3631, Unknown=0, NotChecked=0, Total=5112 [2020-12-17 14:41:06,370 INFO L78 Accepts]: Start accepts. Automaton has 23057 states. Word has length 136 [2020-12-17 14:41:06,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:41:06,370 INFO L481 AbstractCegarLoop]: Abstraction has 23057 states. [2020-12-17 14:41:06,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 5.037037037037037) internal successors, (136), 27 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:41:06,371 INFO L276 IsEmpty]: Start isEmpty. Operand 23057 states. [2020-12-17 14:41:06,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-12-17 14:41:06,395 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:41:06,395 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:41:06,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 245 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable249 [2020-12-17 14:41:06,608 INFO L429 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:41:06,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:41:06,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1832936062, now seen corresponding path program 242 times [2020-12-17 14:41:06,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:41:06,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904014971] [2020-12-17 14:41:06,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:41:06,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:41:07,319 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:41:07,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904014971] [2020-12-17 14:41:07,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075277860] [2020-12-17 14:41:07,319 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 246 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 246 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:41:07,401 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 14:41:07,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:41:07,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-17 14:41:07,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:41:07,485 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:41:07,519 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:41:07,543 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 0 proven. 490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:41:07,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:41:07,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 28 [2020-12-17 14:41:07,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867295764] [2020-12-17 14:41:07,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-12-17 14:41:07,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:41:07,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-12-17 14:41:07,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=591, Unknown=0, NotChecked=0, Total=756 [2020-12-17 14:41:07,545 INFO L87 Difference]: Start difference. First operand 23057 states. Second operand has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:41:10,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:41:10,997 INFO L93 Difference]: Finished difference Result 22609 states and 49116 transitions. [2020-12-17 14:41:10,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-12-17 14:41:10,999 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2020-12-17 14:41:10,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:41:11,024 INFO L225 Difference]: With dead ends: 22609 [2020-12-17 14:41:11,025 INFO L226 Difference]: Without dead ends: 22010 [2020-12-17 14:41:11,025 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1514 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1634, Invalid=4066, Unknown=0, NotChecked=0, Total=5700 [2020-12-17 14:41:11,025 INFO L78 Accepts]: Start accepts. Automaton has 22010 states. Word has length 136 [2020-12-17 14:41:11,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:41:11,026 INFO L481 AbstractCegarLoop]: Abstraction has 22010 states. [2020-12-17 14:41:11,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.928571428571429) internal successors, (138), 28 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:41:11,026 INFO L276 IsEmpty]: Start isEmpty. Operand 22010 states. [2020-12-17 14:41:11,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-12-17 14:41:11,051 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:41:11,051 INFO L504 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:41:11,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250,246 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:41:11,265 INFO L429 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:41:11,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:41:11,266 INFO L82 PathProgramCache]: Analyzing trace with hash -189953341, now seen corresponding path program 243 times [2020-12-17 14:41:11,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:41:11,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949905048] [2020-12-17 14:41:11,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:41:11,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:41:12,293 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:41:12,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949905048] [2020-12-17 14:41:12,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391034645] [2020-12-17 14:41:12,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 247 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 247 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:41:12,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2020-12-17 14:41:12,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:41:12,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-17 14:41:12,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:41:12,489 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:41:12,522 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:41:12,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:41:12,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2020-12-17 14:41:12,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386478805] [2020-12-17 14:41:12,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-12-17 14:41:12,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:41:12,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-12-17 14:41:12,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=612, Unknown=0, NotChecked=0, Total=812 [2020-12-17 14:41:12,523 INFO L87 Difference]: Start difference. First operand 22010 states. Second operand has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:41:14,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:41:14,151 INFO L93 Difference]: Finished difference Result 22330 states and 48390 transitions. [2020-12-17 14:41:14,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-12-17 14:41:14,153 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-12-17 14:41:14,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:41:14,172 INFO L225 Difference]: With dead ends: 22330 [2020-12-17 14:41:14,172 INFO L226 Difference]: Without dead ends: 22060 [2020-12-17 14:41:14,173 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=835, Invalid=2027, Unknown=0, NotChecked=0, Total=2862 [2020-12-17 14:41:14,173 INFO L78 Accepts]: Start accepts. Automaton has 22060 states. Word has length 141 [2020-12-17 14:41:14,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:41:14,173 INFO L481 AbstractCegarLoop]: Abstraction has 22060 states. [2020-12-17 14:41:14,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:41:14,173 INFO L276 IsEmpty]: Start isEmpty. Operand 22060 states. [2020-12-17 14:41:14,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-12-17 14:41:14,190 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:41:14,190 INFO L504 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:41:14,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251,247 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:41:14,391 INFO L429 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:41:14,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:41:14,392 INFO L82 PathProgramCache]: Analyzing trace with hash 475018773, now seen corresponding path program 244 times [2020-12-17 14:41:14,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:41:14,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353933362] [2020-12-17 14:41:14,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:41:14,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:41:15,423 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:41:15,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353933362] [2020-12-17 14:41:15,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825733830] [2020-12-17 14:41:15,423 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:41:15,525 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 14:41:15,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:41:15,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-17 14:41:15,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:41:15,578 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:41:15,661 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:41:15,783 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:41:15,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:41:15,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2020-12-17 14:41:15,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645710439] [2020-12-17 14:41:15,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-12-17 14:41:15,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:41:15,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-12-17 14:41:15,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=678, Unknown=0, NotChecked=0, Total=870 [2020-12-17 14:41:15,785 INFO L87 Difference]: Start difference. First operand 22060 states. Second operand has 30 states, 30 states have (on average 4.833333333333333) internal successors, (145), 30 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:41:17,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:41:17,631 INFO L93 Difference]: Finished difference Result 22380 states and 48490 transitions. [2020-12-17 14:41:17,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-17 14:41:17,633 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.833333333333333) internal successors, (145), 30 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-12-17 14:41:17,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:41:17,663 INFO L225 Difference]: With dead ends: 22380 [2020-12-17 14:41:17,663 INFO L226 Difference]: Without dead ends: 22110 [2020-12-17 14:41:17,663 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=862, Invalid=2330, Unknown=0, NotChecked=0, Total=3192 [2020-12-17 14:41:17,663 INFO L78 Accepts]: Start accepts. Automaton has 22110 states. Word has length 141 [2020-12-17 14:41:17,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:41:17,664 INFO L481 AbstractCegarLoop]: Abstraction has 22110 states. [2020-12-17 14:41:17,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.833333333333333) internal successors, (145), 30 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:41:17,664 INFO L276 IsEmpty]: Start isEmpty. Operand 22110 states. [2020-12-17 14:41:17,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-12-17 14:41:17,692 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:41:17,692 INFO L504 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:41:17,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252,248 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:41:17,908 INFO L429 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:41:17,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:41:17,908 INFO L82 PathProgramCache]: Analyzing trace with hash 461010095, now seen corresponding path program 245 times [2020-12-17 14:41:17,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:41:17,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886453947] [2020-12-17 14:41:17,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:41:17,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:41:19,016 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:41:19,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886453947] [2020-12-17 14:41:19,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285807322] [2020-12-17 14:41:19,017 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:41:19,113 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-12-17 14:41:19,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:41:19,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-17 14:41:19,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:41:19,205 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:41:19,260 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:41:19,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:41:19,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2020-12-17 14:41:19,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335837917] [2020-12-17 14:41:19,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-12-17 14:41:19,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:41:19,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-12-17 14:41:19,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=634, Unknown=0, NotChecked=0, Total=812 [2020-12-17 14:41:19,263 INFO L87 Difference]: Start difference. First operand 22110 states. Second operand has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:41:21,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:41:21,205 INFO L93 Difference]: Finished difference Result 22430 states and 48590 transitions. [2020-12-17 14:41:21,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-12-17 14:41:21,207 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-12-17 14:41:21,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:41:21,236 INFO L225 Difference]: With dead ends: 22430 [2020-12-17 14:41:21,236 INFO L226 Difference]: Without dead ends: 22160 [2020-12-17 14:41:21,237 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=844, Invalid=2348, Unknown=0, NotChecked=0, Total=3192 [2020-12-17 14:41:21,237 INFO L78 Accepts]: Start accepts. Automaton has 22160 states. Word has length 141 [2020-12-17 14:41:21,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:41:21,237 INFO L481 AbstractCegarLoop]: Abstraction has 22160 states. [2020-12-17 14:41:21,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:41:21,237 INFO L276 IsEmpty]: Start isEmpty. Operand 22160 states. [2020-12-17 14:41:21,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-12-17 14:41:21,266 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:41:21,266 INFO L504 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:41:21,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253,249 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:41:21,480 INFO L429 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:41:21,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:41:21,481 INFO L82 PathProgramCache]: Analyzing trace with hash -267511937, now seen corresponding path program 246 times [2020-12-17 14:41:21,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:41:21,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990400348] [2020-12-17 14:41:21,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:41:21,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:41:22,660 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:41:22,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990400348] [2020-12-17 14:41:22,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567754124] [2020-12-17 14:41:22,661 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 250 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 250 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:41:22,789 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-12-17 14:41:22,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:41:22,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-17 14:41:22,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:41:22,858 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:41:22,959 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:41:23,004 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:41:23,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:41:23,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2020-12-17 14:41:23,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75371813] [2020-12-17 14:41:23,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-12-17 14:41:23,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:41:23,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-12-17 14:41:23,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=699, Unknown=0, NotChecked=0, Total=870 [2020-12-17 14:41:23,007 INFO L87 Difference]: Start difference. First operand 22160 states. Second operand has 30 states, 30 states have (on average 4.833333333333333) internal successors, (145), 30 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:41:24,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:41:24,893 INFO L93 Difference]: Finished difference Result 22530 states and 48790 transitions. [2020-12-17 14:41:24,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-12-17 14:41:24,894 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.833333333333333) internal successors, (145), 30 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-12-17 14:41:24,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:41:24,919 INFO L225 Difference]: With dead ends: 22530 [2020-12-17 14:41:24,920 INFO L226 Difference]: Without dead ends: 22260 [2020-12-17 14:41:24,920 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=905, Invalid=2635, Unknown=0, NotChecked=0, Total=3540 [2020-12-17 14:41:24,920 INFO L78 Accepts]: Start accepts. Automaton has 22260 states. Word has length 141 [2020-12-17 14:41:24,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:41:24,921 INFO L481 AbstractCegarLoop]: Abstraction has 22260 states. [2020-12-17 14:41:24,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.833333333333333) internal successors, (145), 30 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:41:24,926 INFO L276 IsEmpty]: Start isEmpty. Operand 22260 states. [2020-12-17 14:41:24,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-12-17 14:41:24,953 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:41:24,953 INFO L504 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:41:25,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 250 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable254 [2020-12-17 14:41:25,166 INFO L429 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:41:25,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:41:25,167 INFO L82 PathProgramCache]: Analyzing trace with hash 589886637, now seen corresponding path program 247 times [2020-12-17 14:41:25,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:41:25,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119045095] [2020-12-17 14:41:25,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:41:25,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:41:26,110 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:41:26,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119045095] [2020-12-17 14:41:26,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471972981] [2020-12-17 14:41:26,114 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 251 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 251 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:41:26,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:41:26,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-17 14:41:26,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:41:26,286 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:41:26,338 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:41:26,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:41:26,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2020-12-17 14:41:26,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434174814] [2020-12-17 14:41:26,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-12-17 14:41:26,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:41:26,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-12-17 14:41:26,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2020-12-17 14:41:26,355 INFO L87 Difference]: Start difference. First operand 22260 states. Second operand has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:41:28,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:41:28,226 INFO L93 Difference]: Finished difference Result 22580 states and 48890 transitions. [2020-12-17 14:41:28,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-12-17 14:41:28,229 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-12-17 14:41:28,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:41:28,250 INFO L225 Difference]: With dead ends: 22580 [2020-12-17 14:41:28,250 INFO L226 Difference]: Without dead ends: 22310 [2020-12-17 14:41:28,251 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=899, Invalid=2641, Unknown=0, NotChecked=0, Total=3540 [2020-12-17 14:41:28,251 INFO L78 Accepts]: Start accepts. Automaton has 22310 states. Word has length 141 [2020-12-17 14:41:28,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:41:28,251 INFO L481 AbstractCegarLoop]: Abstraction has 22310 states. [2020-12-17 14:41:28,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:41:28,252 INFO L276 IsEmpty]: Start isEmpty. Operand 22310 states. [2020-12-17 14:41:28,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-12-17 14:41:28,271 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:41:28,271 INFO L504 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:41:28,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 251 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable255 [2020-12-17 14:41:28,474 INFO L429 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:41:28,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:41:28,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1955781501, now seen corresponding path program 248 times [2020-12-17 14:41:28,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:41:28,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494015388] [2020-12-17 14:41:28,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:41:28,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:41:29,530 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:41:29,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494015388] [2020-12-17 14:41:29,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729925150] [2020-12-17 14:41:29,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 252 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 252 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:41:29,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-17 14:41:29,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:41:29,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-17 14:41:29,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:41:29,686 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:41:29,777 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:41:29,808 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:41:29,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:41:29,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2020-12-17 14:41:29,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397505318] [2020-12-17 14:41:29,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-12-17 14:41:29,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:41:29,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-12-17 14:41:29,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=716, Unknown=0, NotChecked=0, Total=870 [2020-12-17 14:41:29,810 INFO L87 Difference]: Start difference. First operand 22310 states. Second operand has 30 states, 30 states have (on average 4.833333333333333) internal successors, (145), 30 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:41:32,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:41:32,073 INFO L93 Difference]: Finished difference Result 22630 states and 48990 transitions. [2020-12-17 14:41:32,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-12-17 14:41:32,075 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.833333333333333) internal successors, (145), 30 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-12-17 14:41:32,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:41:32,105 INFO L225 Difference]: With dead ends: 22630 [2020-12-17 14:41:32,106 INFO L226 Difference]: Without dead ends: 22360 [2020-12-17 14:41:32,106 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 762 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=922, Invalid=2860, Unknown=0, NotChecked=0, Total=3782 [2020-12-17 14:41:32,106 INFO L78 Accepts]: Start accepts. Automaton has 22360 states. Word has length 141 [2020-12-17 14:41:32,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:41:32,107 INFO L481 AbstractCegarLoop]: Abstraction has 22360 states. [2020-12-17 14:41:32,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.833333333333333) internal successors, (145), 30 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:41:32,107 INFO L276 IsEmpty]: Start isEmpty. Operand 22360 states. [2020-12-17 14:41:32,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-12-17 14:41:32,137 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:41:32,138 INFO L504 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:41:32,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 252 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable256 [2020-12-17 14:41:32,351 INFO L429 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:41:32,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:41:32,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1732658645, now seen corresponding path program 249 times [2020-12-17 14:41:32,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:41:32,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532552949] [2020-12-17 14:41:32,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:41:32,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:41:33,397 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:41:33,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532552949] [2020-12-17 14:41:33,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139188873] [2020-12-17 14:41:33,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 253 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 253 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:41:33,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2020-12-17 14:41:33,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:41:33,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-17 14:41:33,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:41:33,611 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:41:33,663 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:41:33,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:41:33,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2020-12-17 14:41:33,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689709967] [2020-12-17 14:41:33,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-12-17 14:41:33,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:41:33,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-12-17 14:41:33,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=666, Unknown=0, NotChecked=0, Total=812 [2020-12-17 14:41:33,666 INFO L87 Difference]: Start difference. First operand 22360 states. Second operand has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:41:35,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:41:35,859 INFO L93 Difference]: Finished difference Result 22680 states and 49090 transitions. [2020-12-17 14:41:35,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-12-17 14:41:35,860 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-12-17 14:41:35,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:41:35,887 INFO L225 Difference]: With dead ends: 22680 [2020-12-17 14:41:35,887 INFO L226 Difference]: Without dead ends: 22410 [2020-12-17 14:41:35,887 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 833 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=930, Invalid=2852, Unknown=0, NotChecked=0, Total=3782 [2020-12-17 14:41:35,888 INFO L78 Accepts]: Start accepts. Automaton has 22410 states. Word has length 141 [2020-12-17 14:41:35,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:41:35,888 INFO L481 AbstractCegarLoop]: Abstraction has 22410 states. [2020-12-17 14:41:35,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:41:35,888 INFO L276 IsEmpty]: Start isEmpty. Operand 22410 states. [2020-12-17 14:41:35,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-12-17 14:41:35,914 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:41:35,914 INFO L504 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:41:36,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 253 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable257 [2020-12-17 14:41:36,129 INFO L429 AbstractCegarLoop]: === Iteration 259 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:41:36,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:41:36,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1925257989, now seen corresponding path program 250 times [2020-12-17 14:41:36,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:41:36,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921470791] [2020-12-17 14:41:36,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:41:36,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:41:37,166 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:41:37,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921470791] [2020-12-17 14:41:37,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420712489] [2020-12-17 14:41:37,167 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 254 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 254 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:41:37,289 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-17 14:41:37,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:41:37,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-17 14:41:37,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:41:37,360 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:41:37,447 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:41:37,496 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:41:37,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:41:37,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2020-12-17 14:41:37,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246735352] [2020-12-17 14:41:37,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-12-17 14:41:37,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:41:37,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-12-17 14:41:37,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=729, Unknown=0, NotChecked=0, Total=870 [2020-12-17 14:41:37,498 INFO L87 Difference]: Start difference. First operand 22410 states. Second operand has 30 states, 30 states have (on average 4.833333333333333) internal successors, (145), 30 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:41:39,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:41:39,806 INFO L93 Difference]: Finished difference Result 22730 states and 49190 transitions. [2020-12-17 14:41:39,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-12-17 14:41:39,808 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.833333333333333) internal successors, (145), 30 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-12-17 14:41:39,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:41:39,833 INFO L225 Difference]: With dead ends: 22730 [2020-12-17 14:41:39,833 INFO L226 Difference]: Without dead ends: 22460 [2020-12-17 14:41:39,834 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 855 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=955, Invalid=3077, Unknown=0, NotChecked=0, Total=4032 [2020-12-17 14:41:39,834 INFO L78 Accepts]: Start accepts. Automaton has 22460 states. Word has length 141 [2020-12-17 14:41:39,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:41:39,834 INFO L481 AbstractCegarLoop]: Abstraction has 22460 states. [2020-12-17 14:41:39,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 4.833333333333333) internal successors, (145), 30 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:41:39,834 INFO L276 IsEmpty]: Start isEmpty. Operand 22460 states. [2020-12-17 14:41:39,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-12-17 14:41:39,860 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:41:39,860 INFO L504 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:41:40,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258,254 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:41:40,073 INFO L429 AbstractCegarLoop]: === Iteration 260 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:41:40,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:41:40,074 INFO L82 PathProgramCache]: Analyzing trace with hash -272784087, now seen corresponding path program 251 times [2020-12-17 14:41:40,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:41:40,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805362584] [2020-12-17 14:41:40,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:41:40,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:41:41,255 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:41:41,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805362584] [2020-12-17 14:41:41,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453901343] [2020-12-17 14:41:41,256 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 255 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 255 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:41:41,345 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-12-17 14:41:41,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:41:41,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-17 14:41:41,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:41:41,438 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:41:41,478 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:41:41,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:41:41,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 29 [2020-12-17 14:41:41,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828034436] [2020-12-17 14:41:41,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-12-17 14:41:41,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:41:41,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-12-17 14:41:41,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=676, Unknown=0, NotChecked=0, Total=812 [2020-12-17 14:41:41,480 INFO L87 Difference]: Start difference. First operand 22460 states. Second operand has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:41:43,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 14:41:43,688 INFO L93 Difference]: Finished difference Result 22780 states and 49290 transitions. [2020-12-17 14:41:43,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-12-17 14:41:43,690 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2020-12-17 14:41:43,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 14:41:43,710 INFO L225 Difference]: With dead ends: 22780 [2020-12-17 14:41:43,710 INFO L226 Difference]: Without dead ends: 22510 [2020-12-17 14:41:43,711 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 932 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=977, Invalid=3055, Unknown=0, NotChecked=0, Total=4032 [2020-12-17 14:41:43,711 INFO L78 Accepts]: Start accepts. Automaton has 22510 states. Word has length 141 [2020-12-17 14:41:43,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 14:41:43,711 INFO L481 AbstractCegarLoop]: Abstraction has 22510 states. [2020-12-17 14:41:43,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.931034482758621) internal successors, (143), 29 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 14:41:43,711 INFO L276 IsEmpty]: Start isEmpty. Operand 22510 states. [2020-12-17 14:41:43,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-12-17 14:41:43,728 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 14:41:43,729 INFO L504 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 14:41:43,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 255 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable259 [2020-12-17 14:41:43,929 INFO L429 AbstractCegarLoop]: === Iteration 261 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 14:41:43,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 14:41:43,930 INFO L82 PathProgramCache]: Analyzing trace with hash -807201799, now seen corresponding path program 252 times [2020-12-17 14:41:43,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 14:41:43,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218557101] [2020-12-17 14:41:43,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 14:41:43,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 14:41:44,860 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:41:44,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218557101] [2020-12-17 14:41:44,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378344124] [2020-12-17 14:41:44,860 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 256 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 256 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:41:45,033 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-12-17 14:41:45,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-17 14:41:45,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-17 14:41:45,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-17 14:41:45,100 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-17 14:41:45,242 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-17 14:41:45,289 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 0 proven. 542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 14:41:45,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-17 14:41:45,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 30 [2020-12-17 14:41:45,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150127057] [2020-12-17 14:41:45,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-12-17 14:41:45,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 14:41:45,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-12-17 14:41:45,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=738, Unknown=0, NotChecked=0, Total=870 [2020-12-17 14:41:45,294 INFO L87 Difference]: Start difference. First operand 22510 states. Second operand has 30 states, 30 states have (on average 4.833333333333333) internal successors, (145), 30 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2020-12-17 14:41:47,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-17 14:41:47,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260,256 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-17 14:41:47,464 WARN L546 AbstractCegarLoop]: Verification canceled [2020-12-17 14:41:47,474 WARN L250 ceAbstractionStarter]: Timeout [2020-12-17 14:41:47,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 02:41:47 BasicIcfg [2020-12-17 14:41:47,474 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-17 14:41:47,475 INFO L168 Benchmark]: Toolchain (without parser) took 636271.29 ms. Allocated memory was 302.0 MB in the beginning and 3.6 GB in the end (delta: 3.3 GB). Free memory was 276.5 MB in the beginning and 442.5 MB in the end (delta: -166.1 MB). Peak memory consumption was 3.1 GB. Max. memory is 16.0 GB. [2020-12-17 14:41:47,476 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 302.0 MB. Free memory was 272.5 MB in the beginning and 272.3 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2020-12-17 14:41:47,476 INFO L168 Benchmark]: CACSL2BoogieTranslator took 877.34 ms. Allocated memory is still 302.0 MB. Free memory was 276.3 MB in the beginning and 278.9 MB in the end (delta: -2.6 MB). Peak memory consumption was 28.0 MB. Max. memory is 16.0 GB. [2020-12-17 14:41:47,476 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.35 ms. Allocated memory is still 302.0 MB. Free memory was 278.9 MB in the beginning and 276.8 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-12-17 14:41:47,476 INFO L168 Benchmark]: Boogie Preprocessor took 35.05 ms. Allocated memory is still 302.0 MB. Free memory was 276.8 MB in the beginning and 275.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-12-17 14:41:47,477 INFO L168 Benchmark]: RCFGBuilder took 578.22 ms. Allocated memory is still 302.0 MB. Free memory was 275.7 MB in the beginning and 254.8 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2020-12-17 14:41:47,480 INFO L168 Benchmark]: TraceAbstraction took 634710.74 ms. Allocated memory was 302.0 MB in the beginning and 3.6 GB in the end (delta: 3.3 GB). Free memory was 253.7 MB in the beginning and 442.5 MB in the end (delta: -188.8 MB). Peak memory consumption was 3.1 GB. Max. memory is 16.0 GB. [2020-12-17 14:41:47,482 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 302.0 MB. Free memory was 272.5 MB in the beginning and 272.3 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 877.34 ms. Allocated memory is still 302.0 MB. Free memory was 276.3 MB in the beginning and 278.9 MB in the end (delta: -2.6 MB). Peak memory consumption was 28.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 56.35 ms. Allocated memory is still 302.0 MB. Free memory was 278.9 MB in the beginning and 276.8 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 35.05 ms. Allocated memory is still 302.0 MB. Free memory was 276.8 MB in the beginning and 275.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 578.22 ms. Allocated memory is still 302.0 MB. Free memory was 275.7 MB in the beginning and 254.8 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 634710.74 ms. Allocated memory was 302.0 MB in the beginning and 3.6 GB in the end (delta: 3.3 GB). Free memory was 253.7 MB in the beginning and 442.5 MB in the end (delta: -188.8 MB). Peak memory consumption was 3.1 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 693]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 693). Cancelled while BasicCegarLoop was constructing difference of abstraction (22510states) and FLOYD_HOARE automaton (currently 32 states, 30 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 57 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 634.5s, OverallIterations: 261, TraceHistogramMax: 12, AutomataDifference: 387.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 23436 SDtfs, 203526 SDslu, 219471 SDs, 0 SdLazy, 41821 SolverSat, 33003 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 59.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38898 GetRequests, 26627 SyntacticMatches, 243 SemanticMatches, 12027 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146187 ImplicationChecksByTransitivity, 395.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23057occurred in iteration=250, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 5.1s SsaConstructionTime, 13.4s SatisfiabilityAnalysisTime, 152.0s InterpolantComputationTime, 53960 NumberOfCodeBlocks, 53960 NumberOfCodeBlocksAsserted, 1583 NumberOfCheckSat, 53444 ConstructedInterpolants, 0 QuantifiedInterpolants, 25444590 SizeOfPredicates, 4827 NumberOfNonLiveVariables, 54840 ConjunctsInSsa, 5628 ConjunctsInUnsatCore, 516 InterpolantComputations, 6 PerfectInterpolantSequences, 48/135080 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown !SESSION 2020-12-17 14:31:06.934 ----------------------------------------------- eclipse.buildId=unknown java.version=11.0.9 java.vendor=AdoptOpenJDK BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_GB Framework arguments: -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread/triangular-longest-1.i Command-line arguments: -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -i ../../../trunk/examples/svcomp/pthread/triangular-longest-1.i !ENTRY org.eclipse.osgi 4 0 2020-12-17 14:41:47.756 !MESSAGE Application error !STACK 1 org.eclipse.core.internal.resources.ResourceException(/)[568]: java.io.FileNotFoundException: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0af1ead8f/.metadata/.plugins/org.eclipse.core.resources/.root/1.tree (No such file or directory) at java.base/java.io.FileOutputStream.open0(Native Method) at java.base/java.io.FileOutputStream.open(FileOutputStream.java:298) at java.base/java.io.FileOutputStream.(FileOutputStream.java:237) at java.base/java.io.FileOutputStream.(FileOutputStream.java:187) at org.eclipse.core.internal.localstore.SafeFileOutputStream.(SafeFileOutputStream.java:55) at org.eclipse.core.internal.resources.SaveManager.saveTree(SaveManager.java:1381) at org.eclipse.core.internal.resources.SaveManager.save(SaveManager.java:1168) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2333) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2322) at de.uni_freiburg.informatik.ultimate.core.coreplugin.UltimateCore.start(UltimateCore.java:191) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594) at org.eclipse.equinox.launcher.Main.run(Main.java:1465) at org.eclipse.equinox.launcher.Main.main(Main.java:1438) An error has occurred. See the log file /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0af1ead8f/.metadata/.log.