/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/fib_bench_longer-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-10 14:36:07,088 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-10 14:36:07,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-10 14:36:07,130 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-10 14:36:07,130 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-10 14:36:07,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-10 14:36:07,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-10 14:36:07,141 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-10 14:36:07,144 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-10 14:36:07,150 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-10 14:36:07,150 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-10 14:36:07,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-10 14:36:07,152 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-10 14:36:07,154 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-10 14:36:07,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-10 14:36:07,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-10 14:36:07,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-10 14:36:07,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-10 14:36:07,163 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-10 14:36:07,170 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-10 14:36:07,172 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-10 14:36:07,174 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-10 14:36:07,175 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-10 14:36:07,175 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-10 14:36:07,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-10 14:36:07,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-10 14:36:07,184 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-10 14:36:07,184 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-10 14:36:07,185 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 [2021-03-10 14:36:07,207 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-10 14:36:07,207 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-10 14:36:07,207 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-10 14:36:07,207 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-10 14:36:07,208 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-10 14:36:07,208 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-10 14:36:07,209 INFO L138 SettingsManager]: * Use SBE=true [2021-03-10 14:36:07,209 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-10 14:36:07,209 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-10 14:36:07,209 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-10 14:36:07,209 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-10 14:36:07,209 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-10 14:36:07,209 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-10 14:36:07,210 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-10 14:36:07,210 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-10 14:36:07,210 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-10 14:36:07,210 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-10 14:36:07,210 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-10 14:36:07,210 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-10 14:36:07,210 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-10 14:36:07,211 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-10 14:36:07,211 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-10 14:36:07,211 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-10 14:36:07,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 14:36:07,211 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-10 14:36:07,211 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-10 14:36:07,212 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-10 14:36:07,212 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-10 14:36:07,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-10 14:36:07,212 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-10 14:36:07,212 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-10 14:36:07,212 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-10 14:36:07,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-10 14:36:07,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-10 14:36:07,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-10 14:36:07,509 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-10 14:36:07,510 INFO L275 PluginConnector]: CDTParser initialized [2021-03-10 14:36:07,514 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_bench_longer-2.i [2021-03-10 14:36:07,561 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/703f0499c/8cfc84ee998c4783be79bf6e9835ba6b/FLAGdae1de773 [2021-03-10 14:36:08,080 INFO L306 CDTParser]: Found 1 translation units. [2021-03-10 14:36:08,080 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench_longer-2.i [2021-03-10 14:36:08,100 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/703f0499c/8cfc84ee998c4783be79bf6e9835ba6b/FLAGdae1de773 [2021-03-10 14:36:08,408 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/703f0499c/8cfc84ee998c4783be79bf6e9835ba6b [2021-03-10 14:36:08,410 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-10 14:36:08,414 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-10 14:36:08,416 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-10 14:36:08,416 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-10 14:36:08,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-10 14:36:08,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 02:36:08" (1/1) ... [2021-03-10 14:36:08,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8cf6cd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 02:36:08, skipping insertion in model container [2021-03-10 14:36:08,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 02:36:08" (1/1) ... [2021-03-10 14:36:08,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-10 14:36:08,461 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-10 14:36:08,699 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench_longer-2.i[30929,30942] [2021-03-10 14:36:08,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 14:36:08,708 INFO L203 MainTranslator]: Completed pre-run [2021-03-10 14:36:08,737 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench_longer-2.i[30929,30942] [2021-03-10 14:36:08,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 14:36:08,794 INFO L208 MainTranslator]: Completed translation [2021-03-10 14:36:08,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 02:36:08 WrapperNode [2021-03-10 14:36:08,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-10 14:36:08,796 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-10 14:36:08,796 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-10 14:36:08,796 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-10 14:36:08,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 02:36:08" (1/1) ... [2021-03-10 14:36:08,813 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 02:36:08" (1/1) ... [2021-03-10 14:36:08,827 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-10 14:36:08,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-10 14:36:08,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-10 14:36:08,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-10 14:36:08,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 02:36:08" (1/1) ... [2021-03-10 14:36:08,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 02:36:08" (1/1) ... [2021-03-10 14:36:08,836 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 02:36:08" (1/1) ... [2021-03-10 14:36:08,836 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 02:36:08" (1/1) ... [2021-03-10 14:36:08,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 02:36:08" (1/1) ... [2021-03-10 14:36:08,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 02:36:08" (1/1) ... [2021-03-10 14:36:08,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 02:36:08" (1/1) ... [2021-03-10 14:36:08,847 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-10 14:36:08,848 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-10 14:36:08,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-10 14:36:08,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-10 14:36:08,848 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 02:36:08" (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 [2021-03-10 14:36:08,916 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-03-10 14:36:08,917 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-03-10 14:36:08,917 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-03-10 14:36:08,918 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-03-10 14:36:08,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-10 14:36:08,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-10 14:36:08,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-10 14:36:08,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-10 14:36:08,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-10 14:36:08,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-10 14:36:08,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-10 14:36:08,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-10 14:36:08,922 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-10 14:36:09,225 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-10 14:36:09,225 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-03-10 14:36:09,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 02:36:09 BoogieIcfgContainer [2021-03-10 14:36:09,227 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-10 14:36:09,228 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-10 14:36:09,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-10 14:36:09,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-10 14:36:09,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.03 02:36:08" (1/3) ... [2021-03-10 14:36:09,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c2a00c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 02:36:09, skipping insertion in model container [2021-03-10 14:36:09,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 02:36:08" (2/3) ... [2021-03-10 14:36:09,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c2a00c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 02:36:09, skipping insertion in model container [2021-03-10 14:36:09,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 02:36:09" (3/3) ... [2021-03-10 14:36:09,233 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_bench_longer-2.i [2021-03-10 14:36:09,242 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-10 14:36:09,242 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-10 14:36:09,246 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-10 14:36:09,246 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-10 14:36:09,273 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,273 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,274 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,274 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,274 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,274 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,274 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,274 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,275 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,275 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,275 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,275 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,276 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,276 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,276 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,276 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,277 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,277 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,278 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,278 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,278 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,278 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,278 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,279 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,280 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,280 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,280 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,280 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,280 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,280 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,281 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,281 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,281 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,282 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,282 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,282 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,282 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,282 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,282 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,283 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,283 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,283 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,283 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,283 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,283 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,284 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,284 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,284 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,284 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,284 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,285 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,285 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,285 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,285 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,285 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,285 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,286 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,286 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,287 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,288 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,289 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,290 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,290 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,290 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,290 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,290 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,294 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,294 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,294 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,295 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,295 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,295 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 14:36:09,297 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-10 14:36:09,311 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-03-10 14:36:09,342 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-10 14:36:09,342 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-10 14:36:09,342 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-10 14:36:09,342 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-10 14:36:09,343 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-10 14:36:09,343 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-10 14:36:09,343 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-10 14:36:09,343 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-10 14:36:09,357 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 64 places, 62 transitions, 134 flow [2021-03-10 14:36:09,468 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1866 states, 1864 states have (on average 3.1448497854077253) internal successors, (5862), 1865 states have internal predecessors, (5862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:09,475 INFO L276 IsEmpty]: Start isEmpty. Operand has 1866 states, 1864 states have (on average 3.1448497854077253) internal successors, (5862), 1865 states have internal predecessors, (5862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:09,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-03-10 14:36:09,497 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 14:36:09,498 INFO L519 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] [2021-03-10 14:36:09,498 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 14:36:09,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 14:36:09,503 INFO L82 PathProgramCache]: Analyzing trace with hash -80803440, now seen corresponding path program 1 times [2021-03-10 14:36:09,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 14:36:09,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608071266] [2021-03-10 14:36:09,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 14:36:09,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 14:36:09,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:09,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608071266] [2021-03-10 14:36:09,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 14:36:09,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 14:36:09,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934361546] [2021-03-10 14:36:09,829 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 14:36:09,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 14:36:09,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 14:36:09,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-03-10 14:36:09,862 INFO L87 Difference]: Start difference. First operand has 1866 states, 1864 states have (on average 3.1448497854077253) internal successors, (5862), 1865 states have internal predecessors, (5862), 0 states have call successors, (0), 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 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:10,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 14:36:10,073 INFO L93 Difference]: Finished difference Result 3730 states and 10826 transitions. [2021-03-10 14:36:10,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 14:36:10,075 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-03-10 14:36:10,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 14:36:10,098 INFO L225 Difference]: With dead ends: 3730 [2021-03-10 14:36:10,098 INFO L226 Difference]: Without dead ends: 1168 [2021-03-10 14:36:10,099 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 87.8ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-03-10 14:36:10,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2021-03-10 14:36:10,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 903. [2021-03-10 14:36:10,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 902 states have (on average 2.7084257206208426) internal successors, (2443), 902 states have internal predecessors, (2443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:10,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 2443 transitions. [2021-03-10 14:36:10,199 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 2443 transitions. Word has length 26 [2021-03-10 14:36:10,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 14:36:10,199 INFO L480 AbstractCegarLoop]: Abstraction has 903 states and 2443 transitions. [2021-03-10 14:36:10,199 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:10,200 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 2443 transitions. [2021-03-10 14:36:10,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-10 14:36:10,206 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 14:36:10,207 INFO L519 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] [2021-03-10 14:36:10,207 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-10 14:36:10,207 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 14:36:10,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 14:36:10,209 INFO L82 PathProgramCache]: Analyzing trace with hash 311820000, now seen corresponding path program 1 times [2021-03-10 14:36:10,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 14:36:10,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180595920] [2021-03-10 14:36:10,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 14:36:10,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 14:36:10,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:10,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180595920] [2021-03-10 14:36:10,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 14:36:10,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 14:36:10,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909503662] [2021-03-10 14:36:10,400 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 14:36:10,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 14:36:10,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 14:36:10,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-03-10 14:36:10,402 INFO L87 Difference]: Start difference. First operand 903 states and 2443 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:10,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 14:36:10,516 INFO L93 Difference]: Finished difference Result 1680 states and 4453 transitions. [2021-03-10 14:36:10,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 14:36:10,517 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-10 14:36:10,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 14:36:10,526 INFO L225 Difference]: With dead ends: 1680 [2021-03-10 14:36:10,526 INFO L226 Difference]: Without dead ends: 1422 [2021-03-10 14:36:10,528 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 69.3ms TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-03-10 14:36:10,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1422 states. [2021-03-10 14:36:10,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1422 to 998. [2021-03-10 14:36:10,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 997 states have (on average 2.7191574724172516) internal successors, (2711), 997 states have internal predecessors, (2711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:10,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 2711 transitions. [2021-03-10 14:36:10,558 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 2711 transitions. Word has length 31 [2021-03-10 14:36:10,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 14:36:10,558 INFO L480 AbstractCegarLoop]: Abstraction has 998 states and 2711 transitions. [2021-03-10 14:36:10,559 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:10,559 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 2711 transitions. [2021-03-10 14:36:10,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-10 14:36:10,561 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 14:36:10,561 INFO L519 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] [2021-03-10 14:36:10,562 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-10 14:36:10,562 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 14:36:10,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 14:36:10,562 INFO L82 PathProgramCache]: Analyzing trace with hash 795910062, now seen corresponding path program 1 times [2021-03-10 14:36:10,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 14:36:10,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213790847] [2021-03-10 14:36:10,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 14:36:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 14:36:10,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:10,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213790847] [2021-03-10 14:36:10,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 14:36:10,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 14:36:10,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764428163] [2021-03-10 14:36:10,635 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 14:36:10,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 14:36:10,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 14:36:10,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-10 14:36:10,636 INFO L87 Difference]: Start difference. First operand 998 states and 2711 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:10,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 14:36:10,711 INFO L93 Difference]: Finished difference Result 1726 states and 4512 transitions. [2021-03-10 14:36:10,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 14:36:10,712 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-10 14:36:10,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 14:36:10,718 INFO L225 Difference]: With dead ends: 1726 [2021-03-10 14:36:10,718 INFO L226 Difference]: Without dead ends: 1422 [2021-03-10 14:36:10,719 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 51.2ms TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-03-10 14:36:10,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1422 states. [2021-03-10 14:36:10,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1422 to 1101. [2021-03-10 14:36:10,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1101 states, 1100 states have (on average 2.6672727272727275) internal successors, (2934), 1100 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:10,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 2934 transitions. [2021-03-10 14:36:10,746 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 2934 transitions. Word has length 31 [2021-03-10 14:36:10,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 14:36:10,747 INFO L480 AbstractCegarLoop]: Abstraction has 1101 states and 2934 transitions. [2021-03-10 14:36:10,747 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:10,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 2934 transitions. [2021-03-10 14:36:10,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-03-10 14:36:10,748 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 14:36:10,748 INFO L519 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] [2021-03-10 14:36:10,749 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-10 14:36:10,771 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 14:36:10,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 14:36:10,772 INFO L82 PathProgramCache]: Analyzing trace with hash 596317858, now seen corresponding path program 2 times [2021-03-10 14:36:10,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 14:36:10,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378504042] [2021-03-10 14:36:10,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 14:36:10,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 14:36:10,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:10,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378504042] [2021-03-10 14:36:10,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 14:36:10,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 14:36:10,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683292023] [2021-03-10 14:36:10,874 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 14:36:10,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 14:36:10,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 14:36:10,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-03-10 14:36:10,876 INFO L87 Difference]: Start difference. First operand 1101 states and 2934 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:10,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 14:36:10,972 INFO L93 Difference]: Finished difference Result 1918 states and 5024 transitions. [2021-03-10 14:36:10,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-03-10 14:36:10,972 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-03-10 14:36:10,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 14:36:10,979 INFO L225 Difference]: With dead ends: 1918 [2021-03-10 14:36:10,980 INFO L226 Difference]: Without dead ends: 1596 [2021-03-10 14:36:10,981 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 69.9ms TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-03-10 14:36:10,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2021-03-10 14:36:11,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1179. [2021-03-10 14:36:11,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1179 states, 1178 states have (on average 2.6816638370118846) internal successors, (3159), 1178 states have internal predecessors, (3159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:11,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1179 states to 1179 states and 3159 transitions. [2021-03-10 14:36:11,015 INFO L78 Accepts]: Start accepts. Automaton has 1179 states and 3159 transitions. Word has length 31 [2021-03-10 14:36:11,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 14:36:11,016 INFO L480 AbstractCegarLoop]: Abstraction has 1179 states and 3159 transitions. [2021-03-10 14:36:11,016 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:11,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1179 states and 3159 transitions. [2021-03-10 14:36:11,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-03-10 14:36:11,020 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 14:36:11,020 INFO L519 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] [2021-03-10 14:36:11,020 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-10 14:36:11,020 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 14:36:11,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 14:36:11,021 INFO L82 PathProgramCache]: Analyzing trace with hash -147815549, now seen corresponding path program 1 times [2021-03-10 14:36:11,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 14:36:11,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099771048] [2021-03-10 14:36:11,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 14:36:11,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 14:36:11,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:11,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099771048] [2021-03-10 14:36:11,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653790276] [2021-03-10 14:36:11,164 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 [2021-03-10 14:36:11,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 14:36:11,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2021-03-10 14:36:11,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 14:36:11,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:11,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 14:36:11,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-03-10 14:36:11,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710209429] [2021-03-10 14:36:11,493 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-10 14:36:11,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 14:36:11,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-10 14:36:11,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-03-10 14:36:11,494 INFO L87 Difference]: Start difference. First operand 1179 states and 3159 transitions. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 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) [2021-03-10 14:36:11,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 14:36:11,720 INFO L93 Difference]: Finished difference Result 2364 states and 6203 transitions. [2021-03-10 14:36:11,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-03-10 14:36:11,721 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 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 36 [2021-03-10 14:36:11,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 14:36:11,731 INFO L225 Difference]: With dead ends: 2364 [2021-03-10 14:36:11,731 INFO L226 Difference]: Without dead ends: 2000 [2021-03-10 14:36:11,731 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 229.9ms TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2021-03-10 14:36:11,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2000 states. [2021-03-10 14:36:11,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2000 to 1369. [2021-03-10 14:36:11,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1369 states, 1368 states have (on average 2.7010233918128654) internal successors, (3695), 1368 states have internal predecessors, (3695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:11,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 3695 transitions. [2021-03-10 14:36:11,780 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 3695 transitions. Word has length 36 [2021-03-10 14:36:11,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 14:36:11,781 INFO L480 AbstractCegarLoop]: Abstraction has 1369 states and 3695 transitions. [2021-03-10 14:36:11,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 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) [2021-03-10 14:36:11,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 3695 transitions. [2021-03-10 14:36:11,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-03-10 14:36:11,783 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 14:36:11,783 INFO L519 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] [2021-03-10 14:36:11,999 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 14:36:11,999 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 14:36:11,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 14:36:12,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1671330910, now seen corresponding path program 1 times [2021-03-10 14:36:12,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 14:36:12,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633254894] [2021-03-10 14:36:12,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 14:36:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 14:36:12,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:12,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633254894] [2021-03-10 14:36:12,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 14:36:12,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 14:36:12,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099549418] [2021-03-10 14:36:12,085 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 14:36:12,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 14:36:12,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 14:36:12,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-03-10 14:36:12,085 INFO L87 Difference]: Start difference. First operand 1369 states and 3695 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 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) [2021-03-10 14:36:12,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 14:36:12,169 INFO L93 Difference]: Finished difference Result 2041 states and 5346 transitions. [2021-03-10 14:36:12,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 14:36:12,169 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 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 [2021-03-10 14:36:12,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 14:36:12,177 INFO L225 Difference]: With dead ends: 2041 [2021-03-10 14:36:12,177 INFO L226 Difference]: Without dead ends: 1889 [2021-03-10 14:36:12,177 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 68.6ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-03-10 14:36:12,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2021-03-10 14:36:12,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1433. [2021-03-10 14:36:12,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1433 states, 1432 states have (on average 2.685055865921788) internal successors, (3845), 1432 states have internal predecessors, (3845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:12,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 3845 transitions. [2021-03-10 14:36:12,214 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 3845 transitions. Word has length 36 [2021-03-10 14:36:12,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 14:36:12,215 INFO L480 AbstractCegarLoop]: Abstraction has 1433 states and 3845 transitions. [2021-03-10 14:36:12,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 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) [2021-03-10 14:36:12,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 3845 transitions. [2021-03-10 14:36:12,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-03-10 14:36:12,216 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 14:36:12,216 INFO L519 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] [2021-03-10 14:36:12,216 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-10 14:36:12,217 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 14:36:12,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 14:36:12,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1471738706, now seen corresponding path program 2 times [2021-03-10 14:36:12,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 14:36:12,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776622260] [2021-03-10 14:36:12,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 14:36:12,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 14:36:12,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:12,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776622260] [2021-03-10 14:36:12,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 14:36:12,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 14:36:12,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178844843] [2021-03-10 14:36:12,351 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 14:36:12,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 14:36:12,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 14:36:12,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-03-10 14:36:12,352 INFO L87 Difference]: Start difference. First operand 1433 states and 3845 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 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) [2021-03-10 14:36:12,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 14:36:12,489 INFO L93 Difference]: Finished difference Result 2336 states and 6145 transitions. [2021-03-10 14:36:12,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-10 14:36:12,490 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 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 [2021-03-10 14:36:12,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 14:36:12,498 INFO L225 Difference]: With dead ends: 2336 [2021-03-10 14:36:12,498 INFO L226 Difference]: Without dead ends: 2078 [2021-03-10 14:36:12,499 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 123.5ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-03-10 14:36:12,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2078 states. [2021-03-10 14:36:12,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2078 to 1412. [2021-03-10 14:36:12,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1411 states have (on average 2.6959603118355777) internal successors, (3804), 1411 states have internal predecessors, (3804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:12,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 3804 transitions. [2021-03-10 14:36:12,538 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 3804 transitions. Word has length 36 [2021-03-10 14:36:12,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 14:36:12,538 INFO L480 AbstractCegarLoop]: Abstraction has 1412 states and 3804 transitions. [2021-03-10 14:36:12,538 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 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) [2021-03-10 14:36:12,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 3804 transitions. [2021-03-10 14:36:12,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-03-10 14:36:12,540 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 14:36:12,540 INFO L519 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] [2021-03-10 14:36:12,540 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-10 14:36:12,540 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 14:36:12,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 14:36:12,541 INFO L82 PathProgramCache]: Analyzing trace with hash 990498636, now seen corresponding path program 3 times [2021-03-10 14:36:12,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 14:36:12,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611146065] [2021-03-10 14:36:12,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 14:36:12,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 14:36:12,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:12,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611146065] [2021-03-10 14:36:12,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 14:36:12,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 14:36:12,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848692833] [2021-03-10 14:36:12,603 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 14:36:12,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 14:36:12,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 14:36:12,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-03-10 14:36:12,604 INFO L87 Difference]: Start difference. First operand 1412 states and 3804 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 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) [2021-03-10 14:36:12,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 14:36:12,771 INFO L93 Difference]: Finished difference Result 2665 states and 7026 transitions. [2021-03-10 14:36:12,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-10 14:36:12,771 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 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 [2021-03-10 14:36:12,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 14:36:12,781 INFO L225 Difference]: With dead ends: 2665 [2021-03-10 14:36:12,781 INFO L226 Difference]: Without dead ends: 2237 [2021-03-10 14:36:12,781 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 122.0ms TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-03-10 14:36:12,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2237 states. [2021-03-10 14:36:12,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2237 to 1582. [2021-03-10 14:36:12,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1582 states, 1581 states have (on average 2.6824794433902595) internal successors, (4241), 1581 states have internal predecessors, (4241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:12,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 4241 transitions. [2021-03-10 14:36:12,827 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 4241 transitions. Word has length 36 [2021-03-10 14:36:12,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 14:36:12,827 INFO L480 AbstractCegarLoop]: Abstraction has 1582 states and 4241 transitions. [2021-03-10 14:36:12,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 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) [2021-03-10 14:36:12,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 4241 transitions. [2021-03-10 14:36:12,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-03-10 14:36:12,830 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 14:36:12,830 INFO L519 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] [2021-03-10 14:36:12,830 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-10 14:36:12,830 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 14:36:12,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 14:36:12,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1524865637, now seen corresponding path program 1 times [2021-03-10 14:36:12,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 14:36:12,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475920827] [2021-03-10 14:36:12,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 14:36:12,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 14:36:12,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:12,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475920827] [2021-03-10 14:36:12,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440484522] [2021-03-10 14:36:12,942 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 [2021-03-10 14:36:13,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 14:36:13,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-10 14:36:13,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 14:36:13,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:13,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 14:36:13,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-03-10 14:36:13,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486104018] [2021-03-10 14:36:13,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 14:36:13,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 14:36:13,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 14:36:13,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-03-10 14:36:13,198 INFO L87 Difference]: Start difference. First operand 1582 states and 4241 transitions. Second operand has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:13,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 14:36:13,322 INFO L93 Difference]: Finished difference Result 2318 states and 6060 transitions. [2021-03-10 14:36:13,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 14:36:13,322 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have 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 [2021-03-10 14:36:13,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 14:36:13,331 INFO L225 Difference]: With dead ends: 2318 [2021-03-10 14:36:13,331 INFO L226 Difference]: Without dead ends: 2166 [2021-03-10 14:36:13,332 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 144.6ms TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2021-03-10 14:36:13,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2166 states. [2021-03-10 14:36:13,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2166 to 1646. [2021-03-10 14:36:13,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1646 states, 1645 states have (on average 2.6693009118541036) internal successors, (4391), 1645 states have internal predecessors, (4391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:13,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1646 states to 1646 states and 4391 transitions. [2021-03-10 14:36:13,389 INFO L78 Accepts]: Start accepts. Automaton has 1646 states and 4391 transitions. Word has length 41 [2021-03-10 14:36:13,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 14:36:13,390 INFO L480 AbstractCegarLoop]: Abstraction has 1646 states and 4391 transitions. [2021-03-10 14:36:13,390 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:13,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1646 states and 4391 transitions. [2021-03-10 14:36:13,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-03-10 14:36:13,393 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 14:36:13,393 INFO L519 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] [2021-03-10 14:36:13,615 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-03-10 14:36:13,615 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 14:36:13,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 14:36:13,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1724457841, now seen corresponding path program 2 times [2021-03-10 14:36:13,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 14:36:13,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697356803] [2021-03-10 14:36:13,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 14:36:13,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 14:36:13,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:13,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697356803] [2021-03-10 14:36:13,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138971196] [2021-03-10 14:36:13,706 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 [2021-03-10 14:36:13,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 14:36:13,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 14:36:13,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 12 conjunts are in the unsatisfiable core [2021-03-10 14:36:13,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 14:36:13,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:13,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 14:36:13,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-03-10 14:36:13,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306934829] [2021-03-10 14:36:13,897 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-10 14:36:13,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 14:36:13,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-10 14:36:13,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-03-10 14:36:13,897 INFO L87 Difference]: Start difference. First operand 1646 states and 4391 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 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) [2021-03-10 14:36:14,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 14:36:14,153 INFO L93 Difference]: Finished difference Result 2940 states and 7783 transitions. [2021-03-10 14:36:14,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-03-10 14:36:14,154 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 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 41 [2021-03-10 14:36:14,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 14:36:14,164 INFO L225 Difference]: With dead ends: 2940 [2021-03-10 14:36:14,164 INFO L226 Difference]: Without dead ends: 2576 [2021-03-10 14:36:14,165 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 208.3ms TimeCoverageRelationStatistics Valid=129, Invalid=423, Unknown=0, NotChecked=0, Total=552 [2021-03-10 14:36:14,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2576 states. [2021-03-10 14:36:14,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2576 to 1631. [2021-03-10 14:36:14,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1630 states have (on average 2.696319018404908) internal successors, (4395), 1630 states have internal predecessors, (4395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:14,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 4395 transitions. [2021-03-10 14:36:14,208 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 4395 transitions. Word has length 41 [2021-03-10 14:36:14,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 14:36:14,208 INFO L480 AbstractCegarLoop]: Abstraction has 1631 states and 4395 transitions. [2021-03-10 14:36:14,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 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) [2021-03-10 14:36:14,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 4395 transitions. [2021-03-10 14:36:14,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-03-10 14:36:14,211 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 14:36:14,211 INFO L519 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] [2021-03-10 14:36:14,432 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-03-10 14:36:14,432 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 14:36:14,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 14:36:14,433 INFO L82 PathProgramCache]: Analyzing trace with hash 784139351, now seen corresponding path program 1 times [2021-03-10 14:36:14,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 14:36:14,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574300094] [2021-03-10 14:36:14,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 14:36:14,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 14:36:14,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:14,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574300094] [2021-03-10 14:36:14,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716555595] [2021-03-10 14:36:14,519 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 [2021-03-10 14:36:14,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 14:36:14,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-10 14:36:14,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 14:36:14,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:14,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 14:36:14,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-03-10 14:36:14,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539008552] [2021-03-10 14:36:14,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 14:36:14,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 14:36:14,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 14:36:14,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-03-10 14:36:14,752 INFO L87 Difference]: Start difference. First operand 1631 states and 4395 transitions. Second operand has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:14,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 14:36:14,956 INFO L93 Difference]: Finished difference Result 2730 states and 7013 transitions. [2021-03-10 14:36:14,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-10 14:36:14,956 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have 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 [2021-03-10 14:36:14,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 14:36:14,963 INFO L225 Difference]: With dead ends: 2730 [2021-03-10 14:36:14,963 INFO L226 Difference]: Without dead ends: 2426 [2021-03-10 14:36:14,963 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 210.9ms TimeCoverageRelationStatistics Valid=119, Invalid=387, Unknown=0, NotChecked=0, Total=506 [2021-03-10 14:36:14,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2426 states. [2021-03-10 14:36:15,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2426 to 1724. [2021-03-10 14:36:15,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1724 states, 1723 states have (on average 2.6656993615786417) internal successors, (4593), 1723 states have internal predecessors, (4593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:15,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1724 states to 1724 states and 4593 transitions. [2021-03-10 14:36:15,014 INFO L78 Accepts]: Start accepts. Automaton has 1724 states and 4593 transitions. Word has length 41 [2021-03-10 14:36:15,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 14:36:15,015 INFO L480 AbstractCegarLoop]: Abstraction has 1724 states and 4593 transitions. [2021-03-10 14:36:15,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:15,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1724 states and 4593 transitions. [2021-03-10 14:36:15,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-03-10 14:36:15,017 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 14:36:15,017 INFO L519 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] [2021-03-10 14:36:15,231 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 14:36:15,231 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 14:36:15,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 14:36:15,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1132661283, now seen corresponding path program 2 times [2021-03-10 14:36:15,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 14:36:15,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146168427] [2021-03-10 14:36:15,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 14:36:15,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 14:36:15,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:15,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146168427] [2021-03-10 14:36:15,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995004035] [2021-03-10 14:36:15,305 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 [2021-03-10 14:36:15,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 14:36:15,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 14:36:15,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-10 14:36:15,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 14:36:15,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:15,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 14:36:15,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-03-10 14:36:15,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253040815] [2021-03-10 14:36:15,545 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 14:36:15,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 14:36:15,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 14:36:15,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-03-10 14:36:15,546 INFO L87 Difference]: Start difference. First operand 1724 states and 4593 transitions. Second operand has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:15,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 14:36:15,809 INFO L93 Difference]: Finished difference Result 3114 states and 7981 transitions. [2021-03-10 14:36:15,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-03-10 14:36:15,810 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have 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 [2021-03-10 14:36:15,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 14:36:15,825 INFO L225 Difference]: With dead ends: 3114 [2021-03-10 14:36:15,826 INFO L226 Difference]: Without dead ends: 2810 [2021-03-10 14:36:15,826 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 250.1ms TimeCoverageRelationStatistics Valid=150, Invalid=500, Unknown=0, NotChecked=0, Total=650 [2021-03-10 14:36:15,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2810 states. [2021-03-10 14:36:15,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2810 to 1862. [2021-03-10 14:36:15,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1862 states, 1861 states have (on average 2.710908113917249) internal successors, (5045), 1861 states have internal predecessors, (5045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:15,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1862 states to 1862 states and 5045 transitions. [2021-03-10 14:36:15,876 INFO L78 Accepts]: Start accepts. Automaton has 1862 states and 5045 transitions. Word has length 41 [2021-03-10 14:36:15,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 14:36:15,876 INFO L480 AbstractCegarLoop]: Abstraction has 1862 states and 5045 transitions. [2021-03-10 14:36:15,876 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:15,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1862 states and 5045 transitions. [2021-03-10 14:36:15,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-03-10 14:36:15,880 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 14:36:15,880 INFO L519 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] [2021-03-10 14:36:16,095 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-03-10 14:36:16,095 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 14:36:16,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 14:36:16,095 INFO L82 PathProgramCache]: Analyzing trace with hash -767457719, now seen corresponding path program 3 times [2021-03-10 14:36:16,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 14:36:16,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634222852] [2021-03-10 14:36:16,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 14:36:16,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 14:36:16,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:16,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634222852] [2021-03-10 14:36:16,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043041020] [2021-03-10 14:36:16,186 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 [2021-03-10 14:36:16,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-03-10 14:36:16,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 14:36:16,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-10 14:36:16,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 14:36:16,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:16,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 14:36:16,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-03-10 14:36:16,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193385482] [2021-03-10 14:36:16,435 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 14:36:16,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 14:36:16,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 14:36:16,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-03-10 14:36:16,436 INFO L87 Difference]: Start difference. First operand 1862 states and 5045 transitions. Second operand has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:16,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 14:36:16,942 INFO L93 Difference]: Finished difference Result 3960 states and 10472 transitions. [2021-03-10 14:36:16,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-03-10 14:36:16,942 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have 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 [2021-03-10 14:36:16,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 14:36:16,950 INFO L225 Difference]: With dead ends: 3960 [2021-03-10 14:36:16,950 INFO L226 Difference]: Without dead ends: 3320 [2021-03-10 14:36:16,950 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 427.4ms TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 14:36:16,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3320 states. [2021-03-10 14:36:16,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3320 to 2002. [2021-03-10 14:36:17,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2002 states, 2001 states have (on average 2.705647176411794) internal successors, (5414), 2001 states have internal predecessors, (5414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:17,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2002 states to 2002 states and 5414 transitions. [2021-03-10 14:36:17,018 INFO L78 Accepts]: Start accepts. Automaton has 2002 states and 5414 transitions. Word has length 41 [2021-03-10 14:36:17,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 14:36:17,018 INFO L480 AbstractCegarLoop]: Abstraction has 2002 states and 5414 transitions. [2021-03-10 14:36:17,018 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:17,018 INFO L276 IsEmpty]: Start isEmpty. Operand 2002 states and 5414 transitions. [2021-03-10 14:36:17,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 14:36:17,021 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 14:36:17,021 INFO L519 BasicCegarLoop]: trace histogram [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] [2021-03-10 14:36:17,235 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 14:36:17,235 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 14:36:17,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 14:36:17,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1586610595, now seen corresponding path program 2 times [2021-03-10 14:36:17,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 14:36:17,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057153482] [2021-03-10 14:36:17,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 14:36:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 14:36:17,358 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:17,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057153482] [2021-03-10 14:36:17,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857129858] [2021-03-10 14:36:17,358 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 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 [2021-03-10 14:36:17,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 14:36:17,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 14:36:17,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-10 14:36:17,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 14:36:17,634 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:17,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 14:36:17,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-03-10 14:36:17,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147780128] [2021-03-10 14:36:17,635 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-10 14:36:17,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 14:36:17,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-10 14:36:17,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2021-03-10 14:36:17,635 INFO L87 Difference]: Start difference. First operand 2002 states and 5414 transitions. 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) [2021-03-10 14:36:17,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 14:36:17,873 INFO L93 Difference]: Finished difference Result 3462 states and 9194 transitions. [2021-03-10 14:36:17,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-03-10 14:36:17,874 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 46 [2021-03-10 14:36:17,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 14:36:17,880 INFO L225 Difference]: With dead ends: 3462 [2021-03-10 14:36:17,880 INFO L226 Difference]: Without dead ends: 3098 [2021-03-10 14:36:17,881 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 274.1ms TimeCoverageRelationStatistics Valid=170, Invalid=532, Unknown=0, NotChecked=0, Total=702 [2021-03-10 14:36:17,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3098 states. [2021-03-10 14:36:17,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3098 to 2192. [2021-03-10 14:36:17,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2192 states, 2191 states have (on average 2.7156549520766773) internal successors, (5950), 2191 states have internal predecessors, (5950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:17,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2192 states to 2192 states and 5950 transitions. [2021-03-10 14:36:17,927 INFO L78 Accepts]: Start accepts. Automaton has 2192 states and 5950 transitions. Word has length 46 [2021-03-10 14:36:17,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 14:36:17,927 INFO L480 AbstractCegarLoop]: Abstraction has 2192 states and 5950 transitions. [2021-03-10 14:36:17,927 INFO L481 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) [2021-03-10 14:36:17,928 INFO L276 IsEmpty]: Start isEmpty. Operand 2192 states and 5950 transitions. [2021-03-10 14:36:17,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 14:36:17,930 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 14:36:17,931 INFO L519 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] [2021-03-10 14:36:18,143 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-03-10 14:36:18,143 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 14:36:18,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 14:36:18,144 INFO L82 PathProgramCache]: Analyzing trace with hash -889210242, now seen corresponding path program 3 times [2021-03-10 14:36:18,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 14:36:18,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175176583] [2021-03-10 14:36:18,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 14:36:18,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 14:36:18,248 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:18,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175176583] [2021-03-10 14:36:18,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107946223] [2021-03-10 14:36:18,249 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 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 [2021-03-10 14:36:18,309 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-03-10 14:36:18,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 14:36:18,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 13 conjunts are in the unsatisfiable core [2021-03-10 14:36:18,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 14:36:18,444 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:18,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 14:36:18,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-03-10 14:36:18,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803397253] [2021-03-10 14:36:18,445 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-10 14:36:18,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 14:36:18,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-10 14:36:18,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-03-10 14:36:18,446 INFO L87 Difference]: Start difference. First operand 2192 states and 5950 transitions. Second operand has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:18,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 14:36:18,578 INFO L93 Difference]: Finished difference Result 3067 states and 8107 transitions. [2021-03-10 14:36:18,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-10 14:36:18,579 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have 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 [2021-03-10 14:36:18,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 14:36:18,584 INFO L225 Difference]: With dead ends: 3067 [2021-03-10 14:36:18,584 INFO L226 Difference]: Without dead ends: 2915 [2021-03-10 14:36:18,586 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 137.5ms TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2021-03-10 14:36:18,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2021-03-10 14:36:18,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 2256. [2021-03-10 14:36:18,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2256 states, 2255 states have (on average 2.70509977827051) internal successors, (6100), 2255 states have internal predecessors, (6100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:18,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2256 states to 2256 states and 6100 transitions. [2021-03-10 14:36:18,633 INFO L78 Accepts]: Start accepts. Automaton has 2256 states and 6100 transitions. Word has length 46 [2021-03-10 14:36:18,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 14:36:18,633 INFO L480 AbstractCegarLoop]: Abstraction has 2256 states and 6100 transitions. [2021-03-10 14:36:18,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:18,633 INFO L276 IsEmpty]: Start isEmpty. Operand 2256 states and 6100 transitions. [2021-03-10 14:36:18,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 14:36:18,636 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 14:36:18,636 INFO L519 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] [2021-03-10 14:36:18,858 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-03-10 14:36:18,859 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 14:36:18,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 14:36:18,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1088802446, now seen corresponding path program 4 times [2021-03-10 14:36:18,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 14:36:18,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465244755] [2021-03-10 14:36:18,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 14:36:18,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 14:36:18,941 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:18,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465244755] [2021-03-10 14:36:18,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76947114] [2021-03-10 14:36:18,941 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 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 [2021-03-10 14:36:18,997 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 14:36:18,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 14:36:18,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-10 14:36:18,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 14:36:19,248 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:19,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 14:36:19,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-03-10 14:36:19,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394203204] [2021-03-10 14:36:19,249 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 14:36:19,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 14:36:19,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 14:36:19,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-03-10 14:36:19,250 INFO L87 Difference]: Start difference. First operand 2256 states and 6100 transitions. Second operand has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:19,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 14:36:19,660 INFO L93 Difference]: Finished difference Result 3930 states and 10460 transitions. [2021-03-10 14:36:19,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-03-10 14:36:19,660 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have 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 [2021-03-10 14:36:19,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 14:36:19,667 INFO L225 Difference]: With dead ends: 3930 [2021-03-10 14:36:19,667 INFO L226 Difference]: Without dead ends: 3566 [2021-03-10 14:36:19,668 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 434.2ms TimeCoverageRelationStatistics Valid=223, Invalid=769, Unknown=0, NotChecked=0, Total=992 [2021-03-10 14:36:19,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3566 states. [2021-03-10 14:36:19,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3566 to 2217. [2021-03-10 14:36:19,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2217 states, 2216 states have (on average 2.7098375451263537) internal successors, (6005), 2216 states have internal predecessors, (6005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:19,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2217 states to 2217 states and 6005 transitions. [2021-03-10 14:36:19,726 INFO L78 Accepts]: Start accepts. Automaton has 2217 states and 6005 transitions. Word has length 46 [2021-03-10 14:36:19,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 14:36:19,726 INFO L480 AbstractCegarLoop]: Abstraction has 2217 states and 6005 transitions. [2021-03-10 14:36:19,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:19,727 INFO L276 IsEmpty]: Start isEmpty. Operand 2217 states and 6005 transitions. [2021-03-10 14:36:19,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 14:36:19,730 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 14:36:19,730 INFO L519 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] [2021-03-10 14:36:19,955 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-03-10 14:36:19,955 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 14:36:19,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 14:36:19,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1419794746, now seen corresponding path program 1 times [2021-03-10 14:36:19,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 14:36:19,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810462617] [2021-03-10 14:36:19,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 14:36:19,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 14:36:20,038 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:20,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810462617] [2021-03-10 14:36:20,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649169387] [2021-03-10 14:36:20,038 INFO L95 rtionOrderModulation]: Keeping assertion order 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 [2021-03-10 14:36:20,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 14:36:20,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-10 14:36:20,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 14:36:20,276 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:20,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 14:36:20,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-03-10 14:36:20,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212514595] [2021-03-10 14:36:20,278 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 14:36:20,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 14:36:20,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 14:36:20,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-03-10 14:36:20,278 INFO L87 Difference]: Start difference. First operand 2217 states and 6005 transitions. Second operand has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:20,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 14:36:20,536 INFO L93 Difference]: Finished difference Result 3279 states and 8523 transitions. [2021-03-10 14:36:20,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-03-10 14:36:20,536 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have 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 [2021-03-10 14:36:20,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 14:36:20,543 INFO L225 Difference]: With dead ends: 3279 [2021-03-10 14:36:20,543 INFO L226 Difference]: Without dead ends: 3127 [2021-03-10 14:36:20,544 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 276.4ms TimeCoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2021-03-10 14:36:20,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3127 states. [2021-03-10 14:36:20,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3127 to 2256. [2021-03-10 14:36:20,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2256 states, 2255 states have (on average 2.70509977827051) internal successors, (6100), 2255 states have internal predecessors, (6100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:20,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2256 states to 2256 states and 6100 transitions. [2021-03-10 14:36:20,587 INFO L78 Accepts]: Start accepts. Automaton has 2256 states and 6100 transitions. Word has length 46 [2021-03-10 14:36:20,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 14:36:20,587 INFO L480 AbstractCegarLoop]: Abstraction has 2256 states and 6100 transitions. [2021-03-10 14:36:20,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:20,587 INFO L276 IsEmpty]: Start isEmpty. Operand 2256 states and 6100 transitions. [2021-03-10 14:36:20,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 14:36:20,590 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 14:36:20,591 INFO L519 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] [2021-03-10 14:36:20,812 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 14:36:20,812 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 14:36:20,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 14:36:20,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1768316678, now seen corresponding path program 2 times [2021-03-10 14:36:20,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 14:36:20,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546920995] [2021-03-10 14:36:20,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 14:36:20,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 14:36:20,895 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:20,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546920995] [2021-03-10 14:36:20,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946582361] [2021-03-10 14:36:20,895 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 [2021-03-10 14:36:20,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 14:36:20,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 14:36:20,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-10 14:36:20,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 14:36:21,167 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:21,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 14:36:21,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-03-10 14:36:21,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228633007] [2021-03-10 14:36:21,168 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 14:36:21,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 14:36:21,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 14:36:21,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-03-10 14:36:21,169 INFO L87 Difference]: Start difference. First operand 2256 states and 6100 transitions. Second operand has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:21,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 14:36:21,453 INFO L93 Difference]: Finished difference Result 3247 states and 8567 transitions. [2021-03-10 14:36:21,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-03-10 14:36:21,453 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have 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 [2021-03-10 14:36:21,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 14:36:21,459 INFO L225 Difference]: With dead ends: 3247 [2021-03-10 14:36:21,460 INFO L226 Difference]: Without dead ends: 3095 [2021-03-10 14:36:21,460 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 301.9ms TimeCoverageRelationStatistics Valid=176, Invalid=580, Unknown=0, NotChecked=0, Total=756 [2021-03-10 14:36:21,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3095 states. [2021-03-10 14:36:21,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3095 to 2336. [2021-03-10 14:36:21,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2336 states, 2335 states have (on average 2.71948608137045) internal successors, (6350), 2335 states have internal predecessors, (6350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:21,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2336 states to 2336 states and 6350 transitions. [2021-03-10 14:36:21,503 INFO L78 Accepts]: Start accepts. Automaton has 2336 states and 6350 transitions. Word has length 46 [2021-03-10 14:36:21,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 14:36:21,503 INFO L480 AbstractCegarLoop]: Abstraction has 2336 states and 6350 transitions. [2021-03-10 14:36:21,503 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:21,504 INFO L276 IsEmpty]: Start isEmpty. Operand 2336 states and 6350 transitions. [2021-03-10 14:36:21,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 14:36:21,507 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 14:36:21,507 INFO L519 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] [2021-03-10 14:36:21,729 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-03-10 14:36:21,729 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 14:36:21,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 14:36:21,729 INFO L82 PathProgramCache]: Analyzing trace with hash -131802324, now seen corresponding path program 3 times [2021-03-10 14:36:21,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 14:36:21,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174324442] [2021-03-10 14:36:21,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 14:36:21,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 14:36:21,802 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:21,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174324442] [2021-03-10 14:36:21,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201733941] [2021-03-10 14:36:21,803 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 [2021-03-10 14:36:21,871 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-03-10 14:36:21,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 14:36:21,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-10 14:36:21,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 14:36:22,500 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 16 [2021-03-10 14:36:22,543 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:22,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 14:36:22,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-03-10 14:36:22,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328640409] [2021-03-10 14:36:22,544 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-10 14:36:22,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 14:36:22,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-10 14:36:22,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-03-10 14:36:22,545 INFO L87 Difference]: Start difference. First operand 2336 states and 6350 transitions. 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) [2021-03-10 14:36:23,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 14:36:23,270 INFO L93 Difference]: Finished difference Result 5046 states and 13140 transitions. [2021-03-10 14:36:23,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-03-10 14:36:23,270 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 46 [2021-03-10 14:36:23,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 14:36:23,277 INFO L225 Difference]: With dead ends: 5046 [2021-03-10 14:36:23,277 INFO L226 Difference]: Without dead ends: 4354 [2021-03-10 14:36:23,278 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 946.4ms TimeCoverageRelationStatistics Valid=435, Invalid=1727, Unknown=0, NotChecked=0, Total=2162 [2021-03-10 14:36:23,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4354 states. [2021-03-10 14:36:23,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4354 to 2360. [2021-03-10 14:36:23,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2360 states, 2359 states have (on average 2.7007206443408225) internal successors, (6371), 2359 states have internal predecessors, (6371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:23,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2360 states to 2360 states and 6371 transitions. [2021-03-10 14:36:23,329 INFO L78 Accepts]: Start accepts. Automaton has 2360 states and 6371 transitions. Word has length 46 [2021-03-10 14:36:23,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 14:36:23,329 INFO L480 AbstractCegarLoop]: Abstraction has 2360 states and 6371 transitions. [2021-03-10 14:36:23,329 INFO L481 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) [2021-03-10 14:36:23,329 INFO L276 IsEmpty]: Start isEmpty. Operand 2360 states and 6371 transitions. [2021-03-10 14:36:23,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 14:36:23,333 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 14:36:23,333 INFO L519 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] [2021-03-10 14:36:23,547 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 14:36:23,547 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 14:36:23,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 14:36:23,547 INFO L82 PathProgramCache]: Analyzing trace with hash 170319376, now seen corresponding path program 4 times [2021-03-10 14:36:23,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 14:36:23,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230295532] [2021-03-10 14:36:23,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 14:36:23,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 14:36:23,639 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:23,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230295532] [2021-03-10 14:36:23,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943276315] [2021-03-10 14:36:23,640 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 [2021-03-10 14:36:23,686 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 14:36:23,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 14:36:23,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-10 14:36:23,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 14:36:23,855 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:23,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 14:36:23,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-03-10 14:36:23,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989761590] [2021-03-10 14:36:23,856 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 14:36:23,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 14:36:23,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 14:36:23,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-03-10 14:36:23,857 INFO L87 Difference]: Start difference. First operand 2360 states and 6371 transitions. Second operand has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:24,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 14:36:24,110 INFO L93 Difference]: Finished difference Result 3653 states and 9291 transitions. [2021-03-10 14:36:24,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-03-10 14:36:24,110 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have 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 [2021-03-10 14:36:24,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 14:36:24,115 INFO L225 Difference]: With dead ends: 3653 [2021-03-10 14:36:24,115 INFO L226 Difference]: Without dead ends: 3501 [2021-03-10 14:36:24,116 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 274.3ms TimeCoverageRelationStatistics Valid=161, Invalid=489, Unknown=0, NotChecked=0, Total=650 [2021-03-10 14:36:24,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3501 states. [2021-03-10 14:36:24,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3501 to 2410. [2021-03-10 14:36:24,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2410 states, 2409 states have (on average 2.6903279369032793) internal successors, (6481), 2409 states have internal predecessors, (6481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:24,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2410 states to 2410 states and 6481 transitions. [2021-03-10 14:36:24,178 INFO L78 Accepts]: Start accepts. Automaton has 2410 states and 6481 transitions. Word has length 46 [2021-03-10 14:36:24,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 14:36:24,178 INFO L480 AbstractCegarLoop]: Abstraction has 2410 states and 6481 transitions. [2021-03-10 14:36:24,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:24,178 INFO L276 IsEmpty]: Start isEmpty. Operand 2410 states and 6481 transitions. [2021-03-10 14:36:24,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 14:36:24,184 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 14:36:24,184 INFO L519 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] [2021-03-10 14:36:24,401 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-03-10 14:36:24,401 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 14:36:24,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 14:36:24,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1910402620, now seen corresponding path program 5 times [2021-03-10 14:36:24,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 14:36:24,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024025494] [2021-03-10 14:36:24,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 14:36:24,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 14:36:24,490 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:24,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024025494] [2021-03-10 14:36:24,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69609533] [2021-03-10 14:36:24,490 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 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 [2021-03-10 14:36:24,554 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 14:36:24,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 14:36:24,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-10 14:36:24,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 14:36:24,720 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:24,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 14:36:24,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-03-10 14:36:24,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819334617] [2021-03-10 14:36:24,723 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 14:36:24,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 14:36:24,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 14:36:24,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-03-10 14:36:24,724 INFO L87 Difference]: Start difference. First operand 2410 states and 6481 transitions. Second operand has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:25,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 14:36:25,063 INFO L93 Difference]: Finished difference Result 4048 states and 10281 transitions. [2021-03-10 14:36:25,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-03-10 14:36:25,063 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have 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 [2021-03-10 14:36:25,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 14:36:25,068 INFO L225 Difference]: With dead ends: 4048 [2021-03-10 14:36:25,068 INFO L226 Difference]: Without dead ends: 3896 [2021-03-10 14:36:25,068 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 313.7ms TimeCoverageRelationStatistics Valid=221, Invalid=709, Unknown=0, NotChecked=0, Total=930 [2021-03-10 14:36:25,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3896 states. [2021-03-10 14:36:25,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3896 to 2435. [2021-03-10 14:36:25,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2435 states, 2434 states have (on average 2.7099424815119146) internal successors, (6596), 2434 states have internal predecessors, (6596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:25,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2435 states to 2435 states and 6596 transitions. [2021-03-10 14:36:25,112 INFO L78 Accepts]: Start accepts. Automaton has 2435 states and 6596 transitions. Word has length 46 [2021-03-10 14:36:25,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 14:36:25,113 INFO L480 AbstractCegarLoop]: Abstraction has 2435 states and 6596 transitions. [2021-03-10 14:36:25,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:25,113 INFO L276 IsEmpty]: Start isEmpty. Operand 2435 states and 6596 transitions. [2021-03-10 14:36:25,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 14:36:25,116 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 14:36:25,116 INFO L519 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] [2021-03-10 14:36:25,337 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 14:36:25,337 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 14:36:25,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 14:36:25,338 INFO L82 PathProgramCache]: Analyzing trace with hash -594406078, now seen corresponding path program 6 times [2021-03-10 14:36:25,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 14:36:25,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661436681] [2021-03-10 14:36:25,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 14:36:25,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 14:36:25,409 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:25,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661436681] [2021-03-10 14:36:25,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515996035] [2021-03-10 14:36:25,410 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 [2021-03-10 14:36:25,454 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-03-10 14:36:25,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 14:36:25,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 13 conjunts are in the unsatisfiable core [2021-03-10 14:36:25,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 14:36:25,612 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:25,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 14:36:25,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-03-10 14:36:25,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536216718] [2021-03-10 14:36:25,613 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 14:36:25,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 14:36:25,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 14:36:25,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-03-10 14:36:25,613 INFO L87 Difference]: Start difference. First operand 2435 states and 6596 transitions. Second operand has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:25,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 14:36:25,957 INFO L93 Difference]: Finished difference Result 4173 states and 10911 transitions. [2021-03-10 14:36:25,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-03-10 14:36:25,958 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have 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 [2021-03-10 14:36:25,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 14:36:25,962 INFO L225 Difference]: With dead ends: 4173 [2021-03-10 14:36:25,962 INFO L226 Difference]: Without dead ends: 4021 [2021-03-10 14:36:25,962 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 312.9ms TimeCoverageRelationStatistics Valid=246, Invalid=746, Unknown=0, NotChecked=0, Total=992 [2021-03-10 14:36:25,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4021 states. [2021-03-10 14:36:26,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4021 to 2515. [2021-03-10 14:36:26,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2515 states, 2514 states have (on average 2.7231503579952268) internal successors, (6846), 2514 states have internal predecessors, (6846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:26,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2515 states to 2515 states and 6846 transitions. [2021-03-10 14:36:26,013 INFO L78 Accepts]: Start accepts. Automaton has 2515 states and 6846 transitions. Word has length 46 [2021-03-10 14:36:26,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 14:36:26,013 INFO L480 AbstractCegarLoop]: Abstraction has 2515 states and 6846 transitions. [2021-03-10 14:36:26,013 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.125) internal successors, (82), 16 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:26,013 INFO L276 IsEmpty]: Start isEmpty. Operand 2515 states and 6846 transitions. [2021-03-10 14:36:26,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 14:36:26,016 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 14:36:26,016 INFO L519 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] [2021-03-10 14:36:26,237 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 14:36:26,238 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 14:36:26,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 14:36:26,238 INFO L82 PathProgramCache]: Analyzing trace with hash -654873590, now seen corresponding path program 7 times [2021-03-10 14:36:26,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 14:36:26,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400487732] [2021-03-10 14:36:26,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 14:36:26,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 14:36:26,329 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:26,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400487732] [2021-03-10 14:36:26,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379365104] [2021-03-10 14:36:26,330 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 [2021-03-10 14:36:26,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 14:36:26,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-10 14:36:26,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 14:36:26,546 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:26,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 14:36:26,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-03-10 14:36:26,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054642796] [2021-03-10 14:36:26,546 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-03-10 14:36:26,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 14:36:26,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-03-10 14:36:26,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2021-03-10 14:36:26,548 INFO L87 Difference]: Start difference. First operand 2515 states and 6846 transitions. 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) [2021-03-10 14:36:27,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 14:36:27,287 INFO L93 Difference]: Finished difference Result 5880 states and 15300 transitions. [2021-03-10 14:36:27,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-03-10 14:36:27,287 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 46 [2021-03-10 14:36:27,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 14:36:27,292 INFO L225 Difference]: With dead ends: 5880 [2021-03-10 14:36:27,292 INFO L226 Difference]: Without dead ends: 5082 [2021-03-10 14:36:27,293 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 872 ImplicationChecksByTransitivity, 659.4ms TimeCoverageRelationStatistics Valid=598, Invalid=2264, Unknown=0, NotChecked=0, Total=2862 [2021-03-10 14:36:27,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5082 states. [2021-03-10 14:36:27,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5082 to 2666. [2021-03-10 14:36:27,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2666 states, 2665 states have (on average 2.7125703564727957) internal successors, (7229), 2665 states have internal predecessors, (7229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:27,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2666 states to 2666 states and 7229 transitions. [2021-03-10 14:36:27,350 INFO L78 Accepts]: Start accepts. Automaton has 2666 states and 7229 transitions. Word has length 46 [2021-03-10 14:36:27,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 14:36:27,350 INFO L480 AbstractCegarLoop]: Abstraction has 2666 states and 7229 transitions. [2021-03-10 14:36:27,350 INFO L481 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) [2021-03-10 14:36:27,350 INFO L276 IsEmpty]: Start isEmpty. Operand 2666 states and 7229 transitions. [2021-03-10 14:36:27,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-03-10 14:36:27,353 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 14:36:27,354 INFO L519 BasicCegarLoop]: trace histogram [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, 1, 1] [2021-03-10 14:36:27,570 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 14:36:27,571 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 14:36:27,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 14:36:27,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1251148933, now seen corresponding path program 5 times [2021-03-10 14:36:27,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 14:36:27,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497833960] [2021-03-10 14:36:27,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 14:36:27,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 14:36:27,680 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:27,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497833960] [2021-03-10 14:36:27,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541764917] [2021-03-10 14:36:27,680 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 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 [2021-03-10 14:36:27,743 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-03-10 14:36:27,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 14:36:27,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjunts are in the unsatisfiable core [2021-03-10 14:36:27,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 14:36:27,917 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:27,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 14:36:27,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-03-10 14:36:27,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299676668] [2021-03-10 14:36:27,917 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 14:36:27,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 14:36:27,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 14:36:27,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-03-10 14:36:27,918 INFO L87 Difference]: Start difference. First operand 2666 states and 7229 transitions. Second operand has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:28,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 14:36:28,072 INFO L93 Difference]: Finished difference Result 3756 states and 9826 transitions. [2021-03-10 14:36:28,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-03-10 14:36:28,073 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have 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 [2021-03-10 14:36:28,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 14:36:28,076 INFO L225 Difference]: With dead ends: 3756 [2021-03-10 14:36:28,076 INFO L226 Difference]: Without dead ends: 3604 [2021-03-10 14:36:28,076 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 212.6ms TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2021-03-10 14:36:28,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3604 states. [2021-03-10 14:36:28,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3604 to 2754. [2021-03-10 14:36:28,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2754 states, 2753 states have (on average 2.710860879041046) internal successors, (7463), 2753 states have internal predecessors, (7463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:28,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2754 states to 2754 states and 7463 transitions. [2021-03-10 14:36:28,133 INFO L78 Accepts]: Start accepts. Automaton has 2754 states and 7463 transitions. Word has length 51 [2021-03-10 14:36:28,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 14:36:28,134 INFO L480 AbstractCegarLoop]: Abstraction has 2754 states and 7463 transitions. [2021-03-10 14:36:28,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:28,134 INFO L276 IsEmpty]: Start isEmpty. Operand 2754 states and 7463 transitions. [2021-03-10 14:36:28,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-03-10 14:36:28,137 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 14:36:28,137 INFO L519 BasicCegarLoop]: trace histogram [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, 1, 1] [2021-03-10 14:36:28,358 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-03-10 14:36:28,359 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 14:36:28,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 14:36:28,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1450741137, now seen corresponding path program 6 times [2021-03-10 14:36:28,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 14:36:28,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636484300] [2021-03-10 14:36:28,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 14:36:28,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 14:36:28,455 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:28,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636484300] [2021-03-10 14:36:28,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570161653] [2021-03-10 14:36:28,456 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 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 [2021-03-10 14:36:28,516 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-03-10 14:36:28,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 14:36:28,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjunts are in the unsatisfiable core [2021-03-10 14:36:28,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 14:36:28,626 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:28,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 14:36:28,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 14 [2021-03-10 14:36:28,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310919059] [2021-03-10 14:36:28,628 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 14:36:28,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 14:36:28,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 14:36:28,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-03-10 14:36:28,628 INFO L87 Difference]: Start difference. First operand 2754 states and 7463 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 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) [2021-03-10 14:36:28,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 14:36:28,915 INFO L93 Difference]: Finished difference Result 4598 states and 12109 transitions. [2021-03-10 14:36:28,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-03-10 14:36:28,916 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 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 51 [2021-03-10 14:36:28,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 14:36:28,921 INFO L225 Difference]: With dead ends: 4598 [2021-03-10 14:36:28,921 INFO L226 Difference]: Without dead ends: 4234 [2021-03-10 14:36:28,921 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 261.9ms TimeCoverageRelationStatistics Valid=170, Invalid=586, Unknown=0, NotChecked=0, Total=756 [2021-03-10 14:36:28,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4234 states. [2021-03-10 14:36:28,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4234 to 2715. [2021-03-10 14:36:28,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2715 states, 2714 states have (on average 2.7148120854826825) internal successors, (7368), 2714 states have internal predecessors, (7368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:28,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2715 states to 2715 states and 7368 transitions. [2021-03-10 14:36:28,979 INFO L78 Accepts]: Start accepts. Automaton has 2715 states and 7368 transitions. Word has length 51 [2021-03-10 14:36:28,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 14:36:28,979 INFO L480 AbstractCegarLoop]: Abstraction has 2715 states and 7368 transitions. [2021-03-10 14:36:28,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 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) [2021-03-10 14:36:28,979 INFO L276 IsEmpty]: Start isEmpty. Operand 2715 states and 7368 transitions. [2021-03-10 14:36:28,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-03-10 14:36:28,983 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 14:36:28,983 INFO L519 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] [2021-03-10 14:36:29,198 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-03-10 14:36:29,198 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 14:36:29,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 14:36:29,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1057856055, now seen corresponding path program 8 times [2021-03-10 14:36:29,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 14:36:29,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863486686] [2021-03-10 14:36:29,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 14:36:29,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 14:36:29,293 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:29,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863486686] [2021-03-10 14:36:29,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653166419] [2021-03-10 14:36:29,294 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 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 [2021-03-10 14:36:29,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 14:36:29,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 14:36:29,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjunts are in the unsatisfiable core [2021-03-10 14:36:29,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 14:36:29,546 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:29,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 14:36:29,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-03-10 14:36:29,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693553424] [2021-03-10 14:36:29,547 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 14:36:29,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 14:36:29,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 14:36:29,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-03-10 14:36:29,548 INFO L87 Difference]: Start difference. First operand 2715 states and 7368 transitions. Second operand has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:29,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 14:36:29,858 INFO L93 Difference]: Finished difference Result 4018 states and 10337 transitions. [2021-03-10 14:36:29,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-03-10 14:36:29,858 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have 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 [2021-03-10 14:36:29,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 14:36:29,863 INFO L225 Difference]: With dead ends: 4018 [2021-03-10 14:36:29,863 INFO L226 Difference]: Without dead ends: 3866 [2021-03-10 14:36:29,864 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 325.6ms TimeCoverageRelationStatistics Valid=190, Invalid=622, Unknown=0, NotChecked=0, Total=812 [2021-03-10 14:36:29,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3866 states. [2021-03-10 14:36:29,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3866 to 2741. [2021-03-10 14:36:29,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2741 states, 2740 states have (on average 2.7094890510948906) internal successors, (7424), 2740 states have internal predecessors, (7424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:29,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2741 states to 2741 states and 7424 transitions. [2021-03-10 14:36:29,915 INFO L78 Accepts]: Start accepts. Automaton has 2741 states and 7424 transitions. Word has length 51 [2021-03-10 14:36:29,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 14:36:29,916 INFO L480 AbstractCegarLoop]: Abstraction has 2741 states and 7424 transitions. [2021-03-10 14:36:29,916 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:29,916 INFO L276 IsEmpty]: Start isEmpty. Operand 2741 states and 7424 transitions. [2021-03-10 14:36:29,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-03-10 14:36:29,920 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 14:36:29,920 INFO L519 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] [2021-03-10 14:36:30,135 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-03-10 14:36:30,135 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 14:36:30,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 14:36:30,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1406377987, now seen corresponding path program 9 times [2021-03-10 14:36:30,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 14:36:30,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789850663] [2021-03-10 14:36:30,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 14:36:30,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 14:36:30,225 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:30,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789850663] [2021-03-10 14:36:30,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576090653] [2021-03-10 14:36:30,225 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 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 [2021-03-10 14:36:30,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-03-10 14:36:30,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 14:36:30,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 15 conjunts are in the unsatisfiable core [2021-03-10 14:36:30,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 14:36:30,479 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:30,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 14:36:30,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2021-03-10 14:36:30,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220322426] [2021-03-10 14:36:30,479 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-03-10 14:36:30,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 14:36:30,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-03-10 14:36:30,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-03-10 14:36:30,480 INFO L87 Difference]: Start difference. First operand 2741 states and 7424 transitions. Second operand has 16 states, 16 states have (on average 4.6875) internal successors, (75), 16 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:30,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 14:36:30,824 INFO L93 Difference]: Finished difference Result 4441 states and 11396 transitions. [2021-03-10 14:36:30,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-03-10 14:36:30,824 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.6875) internal successors, (75), 16 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have 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 [2021-03-10 14:36:30,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 14:36:30,828 INFO L225 Difference]: With dead ends: 4441 [2021-03-10 14:36:30,828 INFO L226 Difference]: Without dead ends: 4289 [2021-03-10 14:36:30,829 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 345.5ms TimeCoverageRelationStatistics Valid=183, Invalid=629, Unknown=0, NotChecked=0, Total=812 [2021-03-10 14:36:30,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4289 states. [2021-03-10 14:36:30,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4289 to 2833. [2021-03-10 14:36:30,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2833 states, 2832 states have (on average 2.721045197740113) internal successors, (7706), 2832 states have internal predecessors, (7706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:30,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2833 states to 2833 states and 7706 transitions. [2021-03-10 14:36:30,869 INFO L78 Accepts]: Start accepts. Automaton has 2833 states and 7706 transitions. Word has length 51 [2021-03-10 14:36:30,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 14:36:30,869 INFO L480 AbstractCegarLoop]: Abstraction has 2833 states and 7706 transitions. [2021-03-10 14:36:30,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 4.6875) internal successors, (75), 16 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:30,870 INFO L276 IsEmpty]: Start isEmpty. Operand 2833 states and 7706 transitions. [2021-03-10 14:36:30,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-03-10 14:36:30,873 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 14:36:30,873 INFO L519 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] [2021-03-10 14:36:31,094 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-03-10 14:36:31,095 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 14:36:31,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 14:36:31,095 INFO L82 PathProgramCache]: Analyzing trace with hash -493741015, now seen corresponding path program 10 times [2021-03-10 14:36:31,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 14:36:31,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426916260] [2021-03-10 14:36:31,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 14:36:31,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 14:36:31,190 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:31,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426916260] [2021-03-10 14:36:31,191 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829687428] [2021-03-10 14:36:31,191 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 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 [2021-03-10 14:36:31,240 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 14:36:31,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 14:36:31,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjunts are in the unsatisfiable core [2021-03-10 14:36:31,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 14:36:31,588 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:31,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 14:36:31,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-03-10 14:36:31,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400491061] [2021-03-10 14:36:31,589 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 14:36:31,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 14:36:31,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 14:36:31,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2021-03-10 14:36:31,590 INFO L87 Difference]: Start difference. First operand 2833 states and 7706 transitions. Second operand has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:32,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 14:36:32,084 INFO L93 Difference]: Finished difference Result 5068 states and 13399 transitions. [2021-03-10 14:36:32,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-03-10 14:36:32,084 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have 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 [2021-03-10 14:36:32,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 14:36:32,105 INFO L225 Difference]: With dead ends: 5068 [2021-03-10 14:36:32,105 INFO L226 Difference]: Without dead ends: 4704 [2021-03-10 14:36:32,105 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 582.4ms TimeCoverageRelationStatistics Valid=399, Invalid=1407, Unknown=0, NotChecked=0, Total=1806 [2021-03-10 14:36:32,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4704 states. [2021-03-10 14:36:32,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4704 to 2771. [2021-03-10 14:36:32,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2771 states, 2770 states have (on average 2.7148014440433212) internal successors, (7520), 2770 states have internal predecessors, (7520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:32,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2771 states to 2771 states and 7520 transitions. [2021-03-10 14:36:32,151 INFO L78 Accepts]: Start accepts. Automaton has 2771 states and 7520 transitions. Word has length 51 [2021-03-10 14:36:32,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 14:36:32,152 INFO L480 AbstractCegarLoop]: Abstraction has 2771 states and 7520 transitions. [2021-03-10 14:36:32,152 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:32,152 INFO L276 IsEmpty]: Start isEmpty. Operand 2771 states and 7520 transitions. [2021-03-10 14:36:32,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-03-10 14:36:32,155 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 14:36:32,155 INFO L519 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] [2021-03-10 14:36:32,367 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-03-10 14:36:32,367 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 14:36:32,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 14:36:32,368 INFO L82 PathProgramCache]: Analyzing trace with hash -191619315, now seen corresponding path program 11 times [2021-03-10 14:36:32,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 14:36:32,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284488912] [2021-03-10 14:36:32,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 14:36:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 14:36:32,459 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:32,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284488912] [2021-03-10 14:36:32,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684502447] [2021-03-10 14:36:32,460 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 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 [2021-03-10 14:36:32,523 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-03-10 14:36:32,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 14:36:32,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjunts are in the unsatisfiable core [2021-03-10 14:36:32,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 14:36:32,706 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:32,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 14:36:32,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-03-10 14:36:32,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880528114] [2021-03-10 14:36:32,706 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 14:36:32,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 14:36:32,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 14:36:32,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-03-10 14:36:32,707 INFO L87 Difference]: Start difference. First operand 2771 states and 7520 transitions. Second operand has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:33,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 14:36:33,040 INFO L93 Difference]: Finished difference Result 4134 states and 10592 transitions. [2021-03-10 14:36:33,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-03-10 14:36:33,041 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have 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 [2021-03-10 14:36:33,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 14:36:33,046 INFO L225 Difference]: With dead ends: 4134 [2021-03-10 14:36:33,047 INFO L226 Difference]: Without dead ends: 3982 [2021-03-10 14:36:33,048 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 351.4ms TimeCoverageRelationStatistics Valid=219, Invalid=711, Unknown=0, NotChecked=0, Total=930 [2021-03-10 14:36:33,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3982 states. [2021-03-10 14:36:33,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3982 to 2771. [2021-03-10 14:36:33,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2771 states, 2770 states have (on average 2.7148014440433212) internal successors, (7520), 2770 states have internal predecessors, (7520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:33,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2771 states to 2771 states and 7520 transitions. [2021-03-10 14:36:33,091 INFO L78 Accepts]: Start accepts. Automaton has 2771 states and 7520 transitions. Word has length 51 [2021-03-10 14:36:33,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 14:36:33,091 INFO L480 AbstractCegarLoop]: Abstraction has 2771 states and 7520 transitions. [2021-03-10 14:36:33,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:33,092 INFO L276 IsEmpty]: Start isEmpty. Operand 2771 states and 7520 transitions. [2021-03-10 14:36:33,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-03-10 14:36:33,095 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 14:36:33,095 INFO L519 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] [2021-03-10 14:36:33,295 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 14:36:33,296 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 14:36:33,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 14:36:33,296 INFO L82 PathProgramCache]: Analyzing trace with hash 2022625985, now seen corresponding path program 12 times [2021-03-10 14:36:33,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 14:36:33,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973738972] [2021-03-10 14:36:33,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 14:36:33,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 14:36:33,380 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:33,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973738972] [2021-03-10 14:36:33,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476889040] [2021-03-10 14:36:33,381 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 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 [2021-03-10 14:36:33,446 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-03-10 14:36:33,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 14:36:33,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjunts are in the unsatisfiable core [2021-03-10 14:36:33,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 14:36:33,640 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:33,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 14:36:33,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-03-10 14:36:33,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558234131] [2021-03-10 14:36:33,641 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 14:36:33,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 14:36:33,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 14:36:33,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-03-10 14:36:33,642 INFO L87 Difference]: Start difference. First operand 2771 states and 7520 transitions. Second operand has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:34,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 14:36:34,019 INFO L93 Difference]: Finished difference Result 4427 states and 11286 transitions. [2021-03-10 14:36:34,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-03-10 14:36:34,019 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have 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 [2021-03-10 14:36:34,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 14:36:34,023 INFO L225 Difference]: With dead ends: 4427 [2021-03-10 14:36:34,024 INFO L226 Difference]: Without dead ends: 4275 [2021-03-10 14:36:34,024 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 396.3ms TimeCoverageRelationStatistics Valid=265, Invalid=925, Unknown=0, NotChecked=0, Total=1190 [2021-03-10 14:36:34,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4275 states. [2021-03-10 14:36:34,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4275 to 2821. [2021-03-10 14:36:34,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2821 states, 2820 states have (on average 2.726950354609929) internal successors, (7690), 2820 states have internal predecessors, (7690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:34,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2821 states to 2821 states and 7690 transitions. [2021-03-10 14:36:34,059 INFO L78 Accepts]: Start accepts. Automaton has 2821 states and 7690 transitions. Word has length 51 [2021-03-10 14:36:34,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 14:36:34,059 INFO L480 AbstractCegarLoop]: Abstraction has 2821 states and 7690 transitions. [2021-03-10 14:36:34,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:34,059 INFO L276 IsEmpty]: Start isEmpty. Operand 2821 states and 7690 transitions. [2021-03-10 14:36:34,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-03-10 14:36:34,062 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 14:36:34,062 INFO L519 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] [2021-03-10 14:36:34,262 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-03-10 14:36:34,263 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 14:36:34,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 14:36:34,263 INFO L82 PathProgramCache]: Analyzing trace with hash -956344769, now seen corresponding path program 13 times [2021-03-10 14:36:34,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 14:36:34,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456512141] [2021-03-10 14:36:34,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 14:36:34,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 14:36:34,352 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:34,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456512141] [2021-03-10 14:36:34,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886094323] [2021-03-10 14:36:34,353 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 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 [2021-03-10 14:36:34,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 14:36:34,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjunts are in the unsatisfiable core [2021-03-10 14:36:34,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 14:36:34,609 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:34,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 14:36:34,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-03-10 14:36:34,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329605066] [2021-03-10 14:36:34,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-03-10 14:36:34,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 14:36:34,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-03-10 14:36:34,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2021-03-10 14:36:34,610 INFO L87 Difference]: Start difference. First operand 2821 states and 7690 transitions. Second operand has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:35,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 14:36:35,052 INFO L93 Difference]: Finished difference Result 4287 states and 11315 transitions. [2021-03-10 14:36:35,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-03-10 14:36:35,052 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have 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 [2021-03-10 14:36:35,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 14:36:35,058 INFO L225 Difference]: With dead ends: 4287 [2021-03-10 14:36:35,058 INFO L226 Difference]: Without dead ends: 4135 [2021-03-10 14:36:35,058 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 471.9ms TimeCoverageRelationStatistics Valid=331, Invalid=1075, Unknown=0, NotChecked=0, Total=1406 [2021-03-10 14:36:35,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4135 states. [2021-03-10 14:36:35,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4135 to 2901. [2021-03-10 14:36:35,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2901 states, 2900 states have (on average 2.7379310344827585) internal successors, (7940), 2900 states have internal predecessors, (7940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:35,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2901 states to 2901 states and 7940 transitions. [2021-03-10 14:36:35,116 INFO L78 Accepts]: Start accepts. Automaton has 2901 states and 7940 transitions. Word has length 51 [2021-03-10 14:36:35,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 14:36:35,116 INFO L480 AbstractCegarLoop]: Abstraction has 2901 states and 7940 transitions. [2021-03-10 14:36:35,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 14:36:35,116 INFO L276 IsEmpty]: Start isEmpty. Operand 2901 states and 7940 transitions. [2021-03-10 14:36:35,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-03-10 14:36:35,120 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 14:36:35,120 INFO L519 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] [2021-03-10 14:36:35,342 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 14:36:35,343 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 14:36:35,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 14:36:35,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1016812281, now seen corresponding path program 14 times [2021-03-10 14:36:35,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 14:36:35,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037447135] [2021-03-10 14:36:35,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 14:36:35,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 14:36:35,439 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 14:36:35,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037447135] [2021-03-10 14:36:35,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057473876] [2021-03-10 14:36:35,440 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 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 [2021-03-10 14:36:35,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 14:36:35,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 14:36:35,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 14 conjunts are in the unsatisfiable core [2021-03-10 14:36:35,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2021-03-10 14:50:45,819 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-03-10 14:50:45,820 WARN L545 AbstractCegarLoop]: Verification canceled [2021-03-10 14:50:45,822 WARN L224 ceAbstractionStarter]: Timeout [2021-03-10 14:50:45,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.03 02:50:45 BasicIcfg [2021-03-10 14:50:45,823 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-10 14:50:45,823 INFO L168 Benchmark]: Toolchain (without parser) took 877412.18 ms. Allocated memory was 255.9 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 232.9 MB in the beginning and 1.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 980.2 MB. Max. memory is 16.0 GB. [2021-03-10 14:50:45,823 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 14:50:45,824 INFO L168 Benchmark]: CACSL2BoogieTranslator took 379.62 ms. Allocated memory was 255.9 MB in the beginning and 367.0 MB in the end (delta: 111.1 MB). Free memory was 232.3 MB in the beginning and 331.1 MB in the end (delta: -98.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-03-10 14:50:45,824 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.88 ms. Allocated memory is still 367.0 MB. Free memory was 331.1 MB in the beginning and 329.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 14:50:45,824 INFO L168 Benchmark]: Boogie Preprocessor took 19.45 ms. Allocated memory is still 367.0 MB. Free memory was 329.8 MB in the beginning and 328.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 14:50:45,824 INFO L168 Benchmark]: RCFGBuilder took 379.39 ms. Allocated memory is still 367.0 MB. Free memory was 328.4 MB in the beginning and 307.4 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-03-10 14:50:45,824 INFO L168 Benchmark]: TraceAbstraction took 876594.64 ms. Allocated memory was 367.0 MB in the beginning and 1.6 GB in the end (delta: 1.2 GB). Free memory was 307.4 MB in the beginning and 1.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 946.5 MB. Max. memory is 16.0 GB. [2021-03-10 14:50:45,824 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 379.62 ms. Allocated memory was 255.9 MB in the beginning and 367.0 MB in the end (delta: 111.1 MB). Free memory was 232.3 MB in the beginning and 331.1 MB in the end (delta: -98.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 30.88 ms. Allocated memory is still 367.0 MB. Free memory was 331.1 MB in the beginning and 329.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 19.45 ms. Allocated memory is still 367.0 MB. Free memory was 329.8 MB in the beginning and 328.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 379.39 ms. Allocated memory is still 367.0 MB. Free memory was 328.4 MB in the beginning and 307.4 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 876594.64 ms. Allocated memory was 367.0 MB in the beginning and 1.6 GB in the end (delta: 1.2 GB). Free memory was 307.4 MB in the beginning and 1.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 946.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 730]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable (line 730). Cancelled while BasicCegarLoop was analyzing trace of length 52 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while ExplicitLhsPolynomialRelations was build 0 of 1 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 876480.0ms, OverallIterations: 32, TraceHistogramMax: 4, EmptinessCheckTime: 122.4ms, AutomataDifference: 9250.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 125.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2712 SDtfs, 14225 SDslu, 20931 SDs, 0 SdLazy, 3722 SolverSat, 898 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2176.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1760 GetRequests, 996 SyntacticMatches, 14 SemanticMatches, 750 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5638 ImplicationChecksByTransitivity, 8943.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=2901occurred in iteration=31, InterpolantAutomatonStates: 676, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1503.6ms AutomataMinimizationTime, 31 MinimizatonAttempts, 32062 StatesRemovedByMinimization, 31 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 293.8ms SsaConstructionTime, 676.4ms SatisfiabilityAnalysisTime, 7641.2ms InterpolantComputationTime, 2445 NumberOfCodeBlocks, 2445 NumberOfCodeBlocksAsserted, 81 NumberOfCheckSat, 2390 ConstructedInterpolants, 0 QuantifiedInterpolants, 17589 SizeOfPredicates, 50 NumberOfNonLiveVariables, 2930 ConjunctsInSsa, 278 ConjunctsInUnsatCore, 55 InterpolantComputations, 7 PerfectInterpolantSequences, 0/374 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