/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf -i ../../../trunk/examples/svcomp/pthread/fib_bench_longest-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 13:25:15,816 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 13:25:15,819 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 13:25:15,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 13:25:15,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 13:25:15,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 13:25:15,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 13:25:15,863 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 13:25:15,866 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 13:25:15,867 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 13:25:15,868 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 13:25:15,870 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 13:25:15,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 13:25:15,872 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 13:25:15,873 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 13:25:15,875 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 13:25:15,876 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 13:25:15,877 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 13:25:15,879 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 13:25:15,882 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 13:25:15,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 13:25:15,887 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 13:25:15,888 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 13:25:15,893 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 13:25:15,911 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-09 13:25:15,911 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-09 13:25:15,912 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-09 13:25:15,915 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-09 13:25:15,916 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-09 13:25:15,920 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-09 13:25:15,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 13:25:15,924 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 13:25:15,925 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 13:25:15,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 13:25:15,928 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 13:25:15,929 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 13:25:15,930 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 13:25:15,931 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 13:25:15,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 13:25:15,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 13:25:15,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 13:25:15,935 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-11-09 13:25:15,992 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 13:25:15,993 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 13:25:15,997 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 13:25:15,997 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 13:25:15,998 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 13:25:15,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 13:25:16,000 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 13:25:16,000 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 13:25:16,000 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 13:25:16,001 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 13:25:16,002 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 13:25:16,002 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 13:25:16,002 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 13:25:16,003 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 13:25:16,003 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 13:25:16,003 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 13:25:16,003 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 13:25:16,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 13:25:16,004 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 13:25:16,004 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 13:25:16,005 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 13:25:16,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 13:25:16,005 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 13:25:16,006 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 13:25:16,006 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 13:25:16,006 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 13:25:16,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 13:25:16,007 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 13:25:16,007 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 13:25:16,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 13:25:16,511 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 13:25:16,515 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 13:25:16,517 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 13:25:16,517 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 13:25:16,518 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_bench_longest-2.i [2020-11-09 13:25:16,609 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec4e5c261/637a47309d6444948091050caa6ba6a6/FLAG7caf0969a [2020-11-09 13:25:17,344 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 13:25:17,344 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench_longest-2.i [2020-11-09 13:25:17,363 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec4e5c261/637a47309d6444948091050caa6ba6a6/FLAG7caf0969a [2020-11-09 13:25:17,591 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec4e5c261/637a47309d6444948091050caa6ba6a6 [2020-11-09 13:25:17,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 13:25:17,605 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 13:25:17,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 13:25:17,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 13:25:17,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 13:25:17,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:25:17" (1/1) ... [2020-11-09 13:25:17,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d1eb80d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:25:17, skipping insertion in model container [2020-11-09 13:25:17,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:25:17" (1/1) ... [2020-11-09 13:25:17,627 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 13:25:17,670 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 13:25:18,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 13:25:18,203 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 13:25:18,294 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 13:25:18,444 INFO L208 MainTranslator]: Completed translation [2020-11-09 13:25:18,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:25:18 WrapperNode [2020-11-09 13:25:18,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 13:25:18,447 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 13:25:18,447 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 13:25:18,447 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 13:25:18,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:25:18" (1/1) ... [2020-11-09 13:25:18,500 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:25:18" (1/1) ... [2020-11-09 13:25:18,536 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 13:25:18,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 13:25:18,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 13:25:18,540 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 13:25:18,552 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:25:18" (1/1) ... [2020-11-09 13:25:18,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:25:18" (1/1) ... [2020-11-09 13:25:18,561 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:25:18" (1/1) ... [2020-11-09 13:25:18,561 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:25:18" (1/1) ... [2020-11-09 13:25:18,578 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:25:18" (1/1) ... [2020-11-09 13:25:18,589 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:25:18" (1/1) ... [2020-11-09 13:25:18,594 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:25:18" (1/1) ... [2020-11-09 13:25:18,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 13:25:18,609 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 13:25:18,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 13:25:18,609 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 13:25:18,611 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:25:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 13:25:18,704 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-11-09 13:25:18,704 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-11-09 13:25:18,705 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-11-09 13:25:18,705 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-11-09 13:25:18,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 13:25:18,705 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 13:25:18,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 13:25:18,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 13:25:18,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 13:25:18,706 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 13:25:18,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 13:25:18,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 13:25:18,708 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 13:25:19,229 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 13:25:19,229 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-11-09 13:25:19,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:25:19 BoogieIcfgContainer [2020-11-09 13:25:19,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 13:25:19,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 13:25:19,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 13:25:19,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 13:25:19,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 01:25:17" (1/3) ... [2020-11-09 13:25:19,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69106ab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 01:25:19, skipping insertion in model container [2020-11-09 13:25:19,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:25:18" (2/3) ... [2020-11-09 13:25:19,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69106ab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 01:25:19, skipping insertion in model container [2020-11-09 13:25:19,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:25:19" (3/3) ... [2020-11-09 13:25:19,242 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_bench_longest-2.i [2020-11-09 13:25:19,261 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 13:25:19,261 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 13:25:19,266 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 13:25:19,267 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 13:25:19,305 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,305 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,305 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,306 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,306 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,306 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,306 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,306 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,307 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,307 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,307 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,307 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,308 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,308 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,308 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,308 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,309 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,309 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,309 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,309 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,310 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,310 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,310 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,310 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,310 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,311 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,311 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,311 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,311 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,312 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,312 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,312 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,312 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,313 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,313 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,313 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,313 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,313 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,314 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,314 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,314 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,314 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,315 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,315 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,315 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,315 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,316 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,316 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,316 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,316 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,316 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,317 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,317 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,317 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,317 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,317 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,318 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,318 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,318 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,318 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,321 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,321 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,322 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,322 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,322 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,322 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,331 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,332 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,332 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,332 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,332 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,333 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 13:25:19,336 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 13:25:19,351 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-09 13:25:19,377 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 13:25:19,377 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 13:25:19,377 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 13:25:19,377 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-09 13:25:19,378 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 13:25:19,378 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 13:25:19,378 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 13:25:19,378 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 13:25:19,390 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 13:25:19,391 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 67 places, 66 transitions, 142 flow [2020-11-09 13:25:19,395 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 67 places, 66 transitions, 142 flow [2020-11-09 13:25:19,397 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 67 places, 66 transitions, 142 flow [2020-11-09 13:25:19,440 INFO L129 PetriNetUnfolder]: 6/64 cut-off events. [2020-11-09 13:25:19,440 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 13:25:19,446 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 64 events. 6/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 109 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2020-11-09 13:25:19,449 INFO L116 LiptonReduction]: Number of co-enabled transitions 1272 [2020-11-09 13:25:21,194 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2020-11-09 13:25:22,475 WARN L194 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2020-11-09 13:25:22,630 WARN L194 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-11-09 13:25:23,083 WARN L194 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2020-11-09 13:25:23,243 WARN L194 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-11-09 13:25:23,257 INFO L131 LiptonReduction]: Checked pairs total: 1215 [2020-11-09 13:25:23,258 INFO L133 LiptonReduction]: Total number of compositions: 63 [2020-11-09 13:25:23,267 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 16 transitions, 42 flow [2020-11-09 13:25:23,277 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-11-09 13:25:23,279 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-11-09 13:25:23,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-09 13:25:23,285 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:25:23,286 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-09 13:25:23,286 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:25:23,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:25:23,292 INFO L82 PathProgramCache]: Analyzing trace with hash -485169148, now seen corresponding path program 1 times [2020-11-09 13:25:23,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:25:23,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170867279] [2020-11-09 13:25:23,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:25:23,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:25:23,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:23,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170867279] [2020-11-09 13:25:23,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 13:25:23,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 13:25:23,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051883180] [2020-11-09 13:25:23,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 13:25:23,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:25:23,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 13:25:23,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 13:25:23,585 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-11-09 13:25:23,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:25:23,656 INFO L93 Difference]: Finished difference Result 83 states and 212 transitions. [2020-11-09 13:25:23,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 13:25:23,658 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-09 13:25:23,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:25:23,672 INFO L225 Difference]: With dead ends: 83 [2020-11-09 13:25:23,672 INFO L226 Difference]: Without dead ends: 54 [2020-11-09 13:25:23,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 13:25:23,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-09 13:25:23,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2020-11-09 13:25:23,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-09 13:25:23,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 120 transitions. [2020-11-09 13:25:23,720 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 120 transitions. Word has length 6 [2020-11-09 13:25:23,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:25:23,721 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 120 transitions. [2020-11-09 13:25:23,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 13:25:23,721 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 120 transitions. [2020-11-09 13:25:23,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 13:25:23,722 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:25:23,723 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:25:23,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 13:25:23,723 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:25:23,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:25:23,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1939234589, now seen corresponding path program 1 times [2020-11-09 13:25:23,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:25:23,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784776564] [2020-11-09 13:25:23,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:25:23,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:25:23,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:23,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784776564] [2020-11-09 13:25:23,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 13:25:23,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 13:25:23,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914870203] [2020-11-09 13:25:23,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 13:25:23,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:25:23,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 13:25:23,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 13:25:23,832 INFO L87 Difference]: Start difference. First operand 50 states and 120 transitions. Second operand 5 states. [2020-11-09 13:25:23,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:25:23,925 INFO L93 Difference]: Finished difference Result 80 states and 186 transitions. [2020-11-09 13:25:23,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 13:25:23,926 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-11-09 13:25:23,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:25:23,928 INFO L225 Difference]: With dead ends: 80 [2020-11-09 13:25:23,928 INFO L226 Difference]: Without dead ends: 75 [2020-11-09 13:25:23,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-09 13:25:23,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-11-09 13:25:23,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 55. [2020-11-09 13:25:23,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-09 13:25:23,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 136 transitions. [2020-11-09 13:25:23,953 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 136 transitions. Word has length 8 [2020-11-09 13:25:23,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:25:23,956 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 136 transitions. [2020-11-09 13:25:23,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 13:25:23,957 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 136 transitions. [2020-11-09 13:25:23,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 13:25:23,960 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:25:23,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:25:23,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 13:25:23,961 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:25:23,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:25:23,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1904484586, now seen corresponding path program 1 times [2020-11-09 13:25:23,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:25:23,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169935913] [2020-11-09 13:25:23,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:25:24,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:25:24,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:24,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169935913] [2020-11-09 13:25:24,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 13:25:24,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 13:25:24,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600632036] [2020-11-09 13:25:24,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 13:25:24,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:25:24,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 13:25:24,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 13:25:24,059 INFO L87 Difference]: Start difference. First operand 55 states and 136 transitions. Second operand 5 states. [2020-11-09 13:25:24,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:25:24,140 INFO L93 Difference]: Finished difference Result 83 states and 196 transitions. [2020-11-09 13:25:24,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 13:25:24,141 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-11-09 13:25:24,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:25:24,142 INFO L225 Difference]: With dead ends: 83 [2020-11-09 13:25:24,143 INFO L226 Difference]: Without dead ends: 77 [2020-11-09 13:25:24,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-09 13:25:24,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-11-09 13:25:24,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 66. [2020-11-09 13:25:24,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-09 13:25:24,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 157 transitions. [2020-11-09 13:25:24,154 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 157 transitions. Word has length 8 [2020-11-09 13:25:24,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:25:24,156 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 157 transitions. [2020-11-09 13:25:24,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 13:25:24,157 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 157 transitions. [2020-11-09 13:25:24,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 13:25:24,158 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:25:24,158 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:25:24,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 13:25:24,158 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:25:24,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:25:24,159 INFO L82 PathProgramCache]: Analyzing trace with hash 13298082, now seen corresponding path program 2 times [2020-11-09 13:25:24,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:25:24,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395373753] [2020-11-09 13:25:24,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:25:24,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:25:24,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:24,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395373753] [2020-11-09 13:25:24,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112721600] [2020-11-09 13:25:24,260 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 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:25:24,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-09 13:25:24,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:25:24,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-09 13:25:24,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:25:24,468 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 13:25:24,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:24,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:25:24,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-11-09 13:25:24,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123986971] [2020-11-09 13:25:24,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-09 13:25:24,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:25:24,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-09 13:25:24,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-09 13:25:24,489 INFO L87 Difference]: Start difference. First operand 66 states and 157 transitions. Second operand 9 states. [2020-11-09 13:25:24,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:25:24,646 INFO L93 Difference]: Finished difference Result 101 states and 235 transitions. [2020-11-09 13:25:24,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-09 13:25:24,647 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-11-09 13:25:24,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:25:24,648 INFO L225 Difference]: With dead ends: 101 [2020-11-09 13:25:24,648 INFO L226 Difference]: Without dead ends: 96 [2020-11-09 13:25:24,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-11-09 13:25:24,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-11-09 13:25:24,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 71. [2020-11-09 13:25:24,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-11-09 13:25:24,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 173 transitions. [2020-11-09 13:25:24,659 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 173 transitions. Word has length 9 [2020-11-09 13:25:24,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:25:24,659 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 173 transitions. [2020-11-09 13:25:24,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-09 13:25:24,660 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 173 transitions. [2020-11-09 13:25:24,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 13:25:24,661 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:25:24,661 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:25:24,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:25:24,878 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:25:24,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:25:24,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1090495625, now seen corresponding path program 2 times [2020-11-09 13:25:24,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:25:24,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393269389] [2020-11-09 13:25:24,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:25:24,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:25:25,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:25,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393269389] [2020-11-09 13:25:25,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542945704] [2020-11-09 13:25:25,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:25:25,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-09 13:25:25,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:25:25,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-09 13:25:25,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:25:25,141 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 13:25:25,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:25,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:25:25,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-11-09 13:25:25,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069661207] [2020-11-09 13:25:25,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-09 13:25:25,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:25:25,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-09 13:25:25,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-09 13:25:25,172 INFO L87 Difference]: Start difference. First operand 71 states and 173 transitions. Second operand 9 states. [2020-11-09 13:25:25,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:25:25,348 INFO L93 Difference]: Finished difference Result 96 states and 231 transitions. [2020-11-09 13:25:25,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-09 13:25:25,348 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-11-09 13:25:25,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:25:25,350 INFO L225 Difference]: With dead ends: 96 [2020-11-09 13:25:25,350 INFO L226 Difference]: Without dead ends: 90 [2020-11-09 13:25:25,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-11-09 13:25:25,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-11-09 13:25:25,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 77. [2020-11-09 13:25:25,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-11-09 13:25:25,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 190 transitions. [2020-11-09 13:25:25,358 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 190 transitions. Word has length 9 [2020-11-09 13:25:25,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:25:25,359 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 190 transitions. [2020-11-09 13:25:25,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-09 13:25:25,359 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 190 transitions. [2020-11-09 13:25:25,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 13:25:25,360 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:25:25,360 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:25:25,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:25:25,574 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:25:25,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:25:25,575 INFO L82 PathProgramCache]: Analyzing trace with hash 402914365, now seen corresponding path program 1 times [2020-11-09 13:25:25,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:25:25,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791736106] [2020-11-09 13:25:25,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:25:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:25:25,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:25,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791736106] [2020-11-09 13:25:25,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 13:25:25,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 13:25:25,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460032306] [2020-11-09 13:25:25,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-09 13:25:25,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:25:25,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-09 13:25:25,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-09 13:25:25,665 INFO L87 Difference]: Start difference. First operand 77 states and 190 transitions. Second operand 6 states. [2020-11-09 13:25:25,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:25:25,810 INFO L93 Difference]: Finished difference Result 103 states and 242 transitions. [2020-11-09 13:25:25,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-09 13:25:25,811 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-09 13:25:25,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:25:25,812 INFO L225 Difference]: With dead ends: 103 [2020-11-09 13:25:25,812 INFO L226 Difference]: Without dead ends: 98 [2020-11-09 13:25:25,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-09 13:25:25,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-11-09 13:25:25,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 78. [2020-11-09 13:25:25,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-11-09 13:25:25,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 191 transitions. [2020-11-09 13:25:25,829 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 191 transitions. Word has length 10 [2020-11-09 13:25:25,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:25:25,830 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 191 transitions. [2020-11-09 13:25:25,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-09 13:25:25,830 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 191 transitions. [2020-11-09 13:25:25,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 13:25:25,831 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:25:25,831 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:25:25,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 13:25:25,833 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:25:25,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:25:25,834 INFO L82 PathProgramCache]: Analyzing trace with hash 403029685, now seen corresponding path program 2 times [2020-11-09 13:25:25,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:25:25,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203191786] [2020-11-09 13:25:25,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:25:25,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:25:25,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:25,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203191786] [2020-11-09 13:25:25,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 13:25:25,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 13:25:25,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545170287] [2020-11-09 13:25:25,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-09 13:25:25,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:25:25,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-09 13:25:25,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-09 13:25:25,953 INFO L87 Difference]: Start difference. First operand 78 states and 191 transitions. Second operand 6 states. [2020-11-09 13:25:26,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:25:26,112 INFO L93 Difference]: Finished difference Result 103 states and 242 transitions. [2020-11-09 13:25:26,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-09 13:25:26,113 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-09 13:25:26,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:25:26,114 INFO L225 Difference]: With dead ends: 103 [2020-11-09 13:25:26,115 INFO L226 Difference]: Without dead ends: 98 [2020-11-09 13:25:26,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-09 13:25:26,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-11-09 13:25:26,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 82. [2020-11-09 13:25:26,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-11-09 13:25:26,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 194 transitions. [2020-11-09 13:25:26,123 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 194 transitions. Word has length 10 [2020-11-09 13:25:26,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:25:26,124 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 194 transitions. [2020-11-09 13:25:26,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-09 13:25:26,124 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 194 transitions. [2020-11-09 13:25:26,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 13:25:26,125 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:25:26,125 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:25:26,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 13:25:26,125 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:25:26,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:25:26,126 INFO L82 PathProgramCache]: Analyzing trace with hash 412268739, now seen corresponding path program 3 times [2020-11-09 13:25:26,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:25:26,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142140840] [2020-11-09 13:25:26,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:25:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:25:26,286 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:26,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142140840] [2020-11-09 13:25:26,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300052846] [2020-11-09 13:25:26,288 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:25:26,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-09 13:25:26,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:25:26,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-09 13:25:26,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:25:26,455 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 13:25:26,470 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:26,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:25:26,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-11-09 13:25:26,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240349942] [2020-11-09 13:25:26,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-09 13:25:26,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:25:26,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-09 13:25:26,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-11-09 13:25:26,472 INFO L87 Difference]: Start difference. First operand 82 states and 194 transitions. Second operand 11 states. [2020-11-09 13:25:26,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:25:26,717 INFO L93 Difference]: Finished difference Result 122 states and 284 transitions. [2020-11-09 13:25:26,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-09 13:25:26,718 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-11-09 13:25:26,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:25:26,720 INFO L225 Difference]: With dead ends: 122 [2020-11-09 13:25:26,720 INFO L226 Difference]: Without dead ends: 117 [2020-11-09 13:25:26,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2020-11-09 13:25:26,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-11-09 13:25:26,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 88. [2020-11-09 13:25:26,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-11-09 13:25:26,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 215 transitions. [2020-11-09 13:25:26,740 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 215 transitions. Word has length 10 [2020-11-09 13:25:26,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:25:26,740 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 215 transitions. [2020-11-09 13:25:26,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-09 13:25:26,741 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 215 transitions. [2020-11-09 13:25:26,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 13:25:26,742 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:25:26,742 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:25:26,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:25:26,960 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:25:26,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:25:26,961 INFO L82 PathProgramCache]: Analyzing trace with hash 554398346, now seen corresponding path program 3 times [2020-11-09 13:25:26,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:25:26,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72415134] [2020-11-09 13:25:26,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:25:26,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:25:27,053 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:27,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72415134] [2020-11-09 13:25:27,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369158252] [2020-11-09 13:25:27,054 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:25:27,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-09 13:25:27,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:25:27,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-09 13:25:27,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:25:27,227 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 13:25:27,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:27,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:25:27,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-11-09 13:25:27,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089691896] [2020-11-09 13:25:27,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-09 13:25:27,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:25:27,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-09 13:25:27,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-11-09 13:25:27,251 INFO L87 Difference]: Start difference. First operand 88 states and 215 transitions. Second operand 11 states. [2020-11-09 13:25:27,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:25:27,442 INFO L93 Difference]: Finished difference Result 121 states and 288 transitions. [2020-11-09 13:25:27,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-09 13:25:27,442 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-11-09 13:25:27,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:25:27,444 INFO L225 Difference]: With dead ends: 121 [2020-11-09 13:25:27,444 INFO L226 Difference]: Without dead ends: 115 [2020-11-09 13:25:27,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2020-11-09 13:25:27,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-11-09 13:25:27,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 94. [2020-11-09 13:25:27,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-11-09 13:25:27,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 232 transitions. [2020-11-09 13:25:27,458 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 232 transitions. Word has length 10 [2020-11-09 13:25:27,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:25:27,459 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 232 transitions. [2020-11-09 13:25:27,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-09 13:25:27,459 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 232 transitions. [2020-11-09 13:25:27,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 13:25:27,462 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:25:27,465 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:25:27,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:25:27,681 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:25:27,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:25:27,682 INFO L82 PathProgramCache]: Analyzing trace with hash -394647540, now seen corresponding path program 3 times [2020-11-09 13:25:27,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:25:27,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893952551] [2020-11-09 13:25:27,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:25:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:25:27,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:27,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893952551] [2020-11-09 13:25:27,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43403288] [2020-11-09 13:25:27,785 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:25:27,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-09 13:25:27,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:25:27,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-09 13:25:27,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:25:27,986 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 13:25:28,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:28,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:25:28,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-11-09 13:25:28,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773594606] [2020-11-09 13:25:28,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-09 13:25:28,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:25:28,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-09 13:25:28,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-11-09 13:25:28,015 INFO L87 Difference]: Start difference. First operand 94 states and 232 transitions. Second operand 11 states. [2020-11-09 13:25:28,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:25:28,350 INFO L93 Difference]: Finished difference Result 129 states and 303 transitions. [2020-11-09 13:25:28,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-09 13:25:28,351 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-11-09 13:25:28,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:25:28,352 INFO L225 Difference]: With dead ends: 129 [2020-11-09 13:25:28,352 INFO L226 Difference]: Without dead ends: 124 [2020-11-09 13:25:28,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2020-11-09 13:25:28,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-11-09 13:25:28,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 94. [2020-11-09 13:25:28,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-11-09 13:25:28,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 232 transitions. [2020-11-09 13:25:28,358 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 232 transitions. Word has length 11 [2020-11-09 13:25:28,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:25:28,359 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 232 transitions. [2020-11-09 13:25:28,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-09 13:25:28,359 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 232 transitions. [2020-11-09 13:25:28,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 13:25:28,359 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:25:28,360 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:25:28,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-09 13:25:28,574 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:25:28,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:25:28,575 INFO L82 PathProgramCache]: Analyzing trace with hash -394532220, now seen corresponding path program 4 times [2020-11-09 13:25:28,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:25:28,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094562784] [2020-11-09 13:25:28,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:25:28,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:25:28,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:28,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094562784] [2020-11-09 13:25:28,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033726844] [2020-11-09 13:25:28,655 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:25:28,722 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-09 13:25:28,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:25:28,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-09 13:25:28,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:25:28,810 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 13:25:28,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:28,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:25:28,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-11-09 13:25:28,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127773494] [2020-11-09 13:25:28,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-09 13:25:28,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:25:28,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-09 13:25:28,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-11-09 13:25:28,830 INFO L87 Difference]: Start difference. First operand 94 states and 232 transitions. Second operand 11 states. [2020-11-09 13:25:29,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:25:29,267 INFO L93 Difference]: Finished difference Result 147 states and 347 transitions. [2020-11-09 13:25:29,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-09 13:25:29,270 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-11-09 13:25:29,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:25:29,271 INFO L225 Difference]: With dead ends: 147 [2020-11-09 13:25:29,272 INFO L226 Difference]: Without dead ends: 139 [2020-11-09 13:25:29,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2020-11-09 13:25:29,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-11-09 13:25:29,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 99. [2020-11-09 13:25:29,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-11-09 13:25:29,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 240 transitions. [2020-11-09 13:25:29,278 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 240 transitions. Word has length 11 [2020-11-09 13:25:29,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:25:29,278 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 240 transitions. [2020-11-09 13:25:29,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-09 13:25:29,279 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 240 transitions. [2020-11-09 13:25:29,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 13:25:29,281 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:25:29,281 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:25:29,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:25:29,482 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:25:29,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:25:29,483 INFO L82 PathProgramCache]: Analyzing trace with hash -394528376, now seen corresponding path program 5 times [2020-11-09 13:25:29,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:25:29,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672560695] [2020-11-09 13:25:29,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:25:29,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:25:29,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:29,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672560695] [2020-11-09 13:25:29,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939855196] [2020-11-09 13:25:29,591 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:25:29,649 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-09 13:25:29,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:25:29,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-09 13:25:29,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:25:29,747 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 13:25:29,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:29,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:25:29,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-11-09 13:25:29,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962778660] [2020-11-09 13:25:29,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-09 13:25:29,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:25:29,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-09 13:25:29,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-11-09 13:25:29,769 INFO L87 Difference]: Start difference. First operand 99 states and 240 transitions. Second operand 11 states. [2020-11-09 13:25:30,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:25:30,099 INFO L93 Difference]: Finished difference Result 137 states and 324 transitions. [2020-11-09 13:25:30,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-09 13:25:30,102 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-11-09 13:25:30,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:25:30,103 INFO L225 Difference]: With dead ends: 137 [2020-11-09 13:25:30,103 INFO L226 Difference]: Without dead ends: 132 [2020-11-09 13:25:30,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2020-11-09 13:25:30,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-11-09 13:25:30,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 100. [2020-11-09 13:25:30,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-11-09 13:25:30,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 241 transitions. [2020-11-09 13:25:30,110 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 241 transitions. Word has length 11 [2020-11-09 13:25:30,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:25:30,111 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 241 transitions. [2020-11-09 13:25:30,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-09 13:25:30,111 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 241 transitions. [2020-11-09 13:25:30,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 13:25:30,111 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:25:30,112 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:25:30,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:25:30,325 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:25:30,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:25:30,326 INFO L82 PathProgramCache]: Analyzing trace with hash -390953456, now seen corresponding path program 6 times [2020-11-09 13:25:30,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:25:30,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111679618] [2020-11-09 13:25:30,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:25:30,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:25:30,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:30,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111679618] [2020-11-09 13:25:30,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551510446] [2020-11-09 13:25:30,420 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:25:30,479 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-11-09 13:25:30,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:25:30,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-09 13:25:30,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:25:30,559 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 13:25:30,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:30,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:25:30,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-11-09 13:25:30,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404425579] [2020-11-09 13:25:30,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-09 13:25:30,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:25:30,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-09 13:25:30,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-11-09 13:25:30,574 INFO L87 Difference]: Start difference. First operand 100 states and 241 transitions. Second operand 11 states. [2020-11-09 13:25:30,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:25:30,965 INFO L93 Difference]: Finished difference Result 136 states and 319 transitions. [2020-11-09 13:25:30,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-09 13:25:30,966 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-11-09 13:25:30,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:25:30,968 INFO L225 Difference]: With dead ends: 136 [2020-11-09 13:25:30,968 INFO L226 Difference]: Without dead ends: 131 [2020-11-09 13:25:30,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2020-11-09 13:25:30,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-11-09 13:25:30,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 98. [2020-11-09 13:25:30,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-11-09 13:25:30,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 231 transitions. [2020-11-09 13:25:30,975 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 231 transitions. Word has length 11 [2020-11-09 13:25:30,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:25:30,976 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 231 transitions. [2020-11-09 13:25:30,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-09 13:25:30,976 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 231 transitions. [2020-11-09 13:25:30,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 13:25:30,976 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:25:30,977 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:25:31,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-09 13:25:31,192 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:25:31,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:25:31,193 INFO L82 PathProgramCache]: Analyzing trace with hash -104542782, now seen corresponding path program 4 times [2020-11-09 13:25:31,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:25:31,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938982700] [2020-11-09 13:25:31,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:25:31,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:25:31,302 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:31,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938982700] [2020-11-09 13:25:31,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443214286] [2020-11-09 13:25:31,304 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 [2020-11-09 13:25:31,373 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-09 13:25:31,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:25:31,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-09 13:25:31,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:25:31,487 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 13:25:31,506 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:31,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:25:31,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-11-09 13:25:31,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175728159] [2020-11-09 13:25:31,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-09 13:25:31,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:25:31,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-09 13:25:31,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-11-09 13:25:31,508 INFO L87 Difference]: Start difference. First operand 98 states and 231 transitions. Second operand 13 states. [2020-11-09 13:25:31,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:25:31,811 INFO L93 Difference]: Finished difference Result 143 states and 333 transitions. [2020-11-09 13:25:31,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-09 13:25:31,812 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-11-09 13:25:31,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:25:31,814 INFO L225 Difference]: With dead ends: 143 [2020-11-09 13:25:31,814 INFO L226 Difference]: Without dead ends: 138 [2020-11-09 13:25:31,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=145, Invalid=317, Unknown=0, NotChecked=0, Total=462 [2020-11-09 13:25:31,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-11-09 13:25:31,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 105. [2020-11-09 13:25:31,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-11-09 13:25:31,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 257 transitions. [2020-11-09 13:25:31,826 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 257 transitions. Word has length 11 [2020-11-09 13:25:31,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:25:31,827 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 257 transitions. [2020-11-09 13:25:31,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-09 13:25:31,828 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 257 transitions. [2020-11-09 13:25:31,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 13:25:31,828 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:25:31,828 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:25:32,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:25:32,042 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:25:32,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:25:32,043 INFO L82 PathProgramCache]: Analyzing trace with hash 6503895, now seen corresponding path program 4 times [2020-11-09 13:25:32,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:25:32,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756175310] [2020-11-09 13:25:32,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:25:32,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:25:32,124 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:32,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756175310] [2020-11-09 13:25:32,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745398131] [2020-11-09 13:25:32,126 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:25:32,192 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-09 13:25:32,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:25:32,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-09 13:25:32,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:25:32,297 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 13:25:32,313 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:32,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:25:32,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-11-09 13:25:32,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606599277] [2020-11-09 13:25:32,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-09 13:25:32,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:25:32,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-09 13:25:32,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-11-09 13:25:32,317 INFO L87 Difference]: Start difference. First operand 105 states and 257 transitions. Second operand 13 states. [2020-11-09 13:25:32,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:25:32,686 INFO L93 Difference]: Finished difference Result 147 states and 350 transitions. [2020-11-09 13:25:32,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-09 13:25:32,687 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-11-09 13:25:32,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:25:32,689 INFO L225 Difference]: With dead ends: 147 [2020-11-09 13:25:32,689 INFO L226 Difference]: Without dead ends: 141 [2020-11-09 13:25:32,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=145, Invalid=317, Unknown=0, NotChecked=0, Total=462 [2020-11-09 13:25:32,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-11-09 13:25:32,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 113. [2020-11-09 13:25:32,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-11-09 13:25:32,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 282 transitions. [2020-11-09 13:25:32,696 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 282 transitions. Word has length 11 [2020-11-09 13:25:32,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:25:32,696 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 282 transitions. [2020-11-09 13:25:32,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-09 13:25:32,696 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 282 transitions. [2020-11-09 13:25:32,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 13:25:32,697 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:25:32,697 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:25:32,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-09 13:25:32,911 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:25:32,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:25:32,912 INFO L82 PathProgramCache]: Analyzing trace with hash 650737181, now seen corresponding path program 7 times [2020-11-09 13:25:32,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:25:32,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834573900] [2020-11-09 13:25:32,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:25:32,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:25:33,013 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:33,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834573900] [2020-11-09 13:25:33,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514749023] [2020-11-09 13:25:33,014 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:25:33,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:25:33,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-09 13:25:33,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:25:33,204 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 13:25:33,221 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:33,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:25:33,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-11-09 13:25:33,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541736983] [2020-11-09 13:25:33,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-09 13:25:33,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:25:33,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-09 13:25:33,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-11-09 13:25:33,225 INFO L87 Difference]: Start difference. First operand 113 states and 282 transitions. Second operand 13 states. [2020-11-09 13:25:33,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:25:33,805 INFO L93 Difference]: Finished difference Result 157 states and 374 transitions. [2020-11-09 13:25:33,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-09 13:25:33,805 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-11-09 13:25:33,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:25:33,807 INFO L225 Difference]: With dead ends: 157 [2020-11-09 13:25:33,807 INFO L226 Difference]: Without dead ends: 152 [2020-11-09 13:25:33,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=204, Invalid=552, Unknown=0, NotChecked=0, Total=756 [2020-11-09 13:25:33,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-11-09 13:25:33,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 112. [2020-11-09 13:25:33,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-11-09 13:25:33,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 277 transitions. [2020-11-09 13:25:33,815 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 277 transitions. Word has length 12 [2020-11-09 13:25:33,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:25:33,816 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 277 transitions. [2020-11-09 13:25:33,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-09 13:25:33,816 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 277 transitions. [2020-11-09 13:25:33,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 13:25:33,817 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:25:33,817 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:25:34,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-11-09 13:25:34,033 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:25:34,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:25:34,034 INFO L82 PathProgramCache]: Analyzing trace with hash 650852501, now seen corresponding path program 8 times [2020-11-09 13:25:34,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:25:34,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072153989] [2020-11-09 13:25:34,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:25:34,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:25:34,122 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:34,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072153989] [2020-11-09 13:25:34,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424150084] [2020-11-09 13:25:34,123 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:25:34,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-09 13:25:34,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:25:34,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-09 13:25:34,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:25:34,359 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 13:25:36,538 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:25:36,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:25:36,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2020-11-09 13:25:36,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606412700] [2020-11-09 13:25:36,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-09 13:25:36,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:25:36,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-09 13:25:36,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=138, Unknown=1, NotChecked=0, Total=182 [2020-11-09 13:25:36,540 INFO L87 Difference]: Start difference. First operand 112 states and 277 transitions. Second operand 14 states. [2020-11-09 13:25:40,981 WARN L194 SmtUtils]: Spent 4.17 s on a formula simplification. DAG size of input: 43 DAG size of output: 32 [2020-11-09 13:25:43,073 WARN L194 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 27 [2020-11-09 13:25:50,561 WARN L194 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 25 [2020-11-09 13:26:07,624 WARN L194 SmtUtils]: Spent 3.54 s on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2020-11-09 13:27:17,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:27:17,687 INFO L93 Difference]: Finished difference Result 163 states and 386 transitions. [2020-11-09 13:27:17,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-09 13:27:17,693 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 12 [2020-11-09 13:27:17,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:27:17,694 INFO L225 Difference]: With dead ends: 163 [2020-11-09 13:27:17,695 INFO L226 Difference]: Without dead ends: 158 [2020-11-09 13:27:17,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 36.0s TimeCoverageRelationStatistics Valid=243, Invalid=616, Unknown=11, NotChecked=0, Total=870 [2020-11-09 13:27:17,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-11-09 13:27:17,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 112. [2020-11-09 13:27:17,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-11-09 13:27:17,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 279 transitions. [2020-11-09 13:27:17,701 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 279 transitions. Word has length 12 [2020-11-09 13:27:17,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:27:17,702 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 279 transitions. [2020-11-09 13:27:17,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-09 13:27:17,702 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 279 transitions. [2020-11-09 13:27:17,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 13:27:17,702 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:27:17,703 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:27:17,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-09 13:27:17,916 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:27:17,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:27:17,917 INFO L82 PathProgramCache]: Analyzing trace with hash 650856345, now seen corresponding path program 9 times [2020-11-09 13:27:17,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:27:17,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421575431] [2020-11-09 13:27:17,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:27:17,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:27:18,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:27:18,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421575431] [2020-11-09 13:27:18,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043037449] [2020-11-09 13:27:18,069 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:27:18,140 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-09 13:27:18,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:27:18,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-09 13:27:18,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:27:18,305 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 13:27:18,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:27:18,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:27:18,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-11-09 13:27:18,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279001742] [2020-11-09 13:27:18,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-09 13:27:18,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:27:18,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-09 13:27:18,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-11-09 13:27:18,334 INFO L87 Difference]: Start difference. First operand 112 states and 279 transitions. Second operand 13 states. [2020-11-09 13:27:18,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:27:18,984 INFO L93 Difference]: Finished difference Result 170 states and 400 transitions. [2020-11-09 13:27:18,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-09 13:27:18,985 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-11-09 13:27:18,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:27:18,986 INFO L225 Difference]: With dead ends: 170 [2020-11-09 13:27:18,986 INFO L226 Difference]: Without dead ends: 162 [2020-11-09 13:27:18,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2020-11-09 13:27:18,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-11-09 13:27:18,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 112. [2020-11-09 13:27:18,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-11-09 13:27:18,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 275 transitions. [2020-11-09 13:27:18,993 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 275 transitions. Word has length 12 [2020-11-09 13:27:18,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:27:18,993 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 275 transitions. [2020-11-09 13:27:18,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-09 13:27:18,993 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 275 transitions. [2020-11-09 13:27:18,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 13:27:18,994 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:27:18,994 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:27:19,208 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-11-09 13:27:19,209 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:27:19,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:27:19,210 INFO L82 PathProgramCache]: Analyzing trace with hash 654427421, now seen corresponding path program 10 times [2020-11-09 13:27:19,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:27:19,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907218770] [2020-11-09 13:27:19,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:27:19,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:27:19,316 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:27:19,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907218770] [2020-11-09 13:27:19,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135860985] [2020-11-09 13:27:19,317 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:27:19,399 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-09 13:27:19,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:27:19,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-09 13:27:19,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:27:19,545 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 13:27:19,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:27:19,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:27:19,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-11-09 13:27:19,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331471543] [2020-11-09 13:27:19,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-09 13:27:19,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:27:19,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-09 13:27:19,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-11-09 13:27:19,576 INFO L87 Difference]: Start difference. First operand 112 states and 275 transitions. Second operand 13 states. [2020-11-09 13:27:20,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:27:20,441 INFO L93 Difference]: Finished difference Result 181 states and 433 transitions. [2020-11-09 13:27:20,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-09 13:27:20,443 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-11-09 13:27:20,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:27:20,445 INFO L225 Difference]: With dead ends: 181 [2020-11-09 13:27:20,445 INFO L226 Difference]: Without dead ends: 173 [2020-11-09 13:27:20,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2020-11-09 13:27:20,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-11-09 13:27:20,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 116. [2020-11-09 13:27:20,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-11-09 13:27:20,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 291 transitions. [2020-11-09 13:27:20,453 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 291 transitions. Word has length 12 [2020-11-09 13:27:20,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:27:20,454 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 291 transitions. [2020-11-09 13:27:20,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-09 13:27:20,454 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 291 transitions. [2020-11-09 13:27:20,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 13:27:20,454 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:27:20,455 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:27:20,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:27:20,667 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:27:20,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:27:20,667 INFO L82 PathProgramCache]: Analyzing trace with hash 654431265, now seen corresponding path program 11 times [2020-11-09 13:27:20,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:27:20,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112745084] [2020-11-09 13:27:20,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:27:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:27:20,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:27:20,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112745084] [2020-11-09 13:27:20,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275182112] [2020-11-09 13:27:20,789 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:27:20,872 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-09 13:27:20,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:27:20,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-09 13:27:20,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:27:21,072 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 13:27:21,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:27:21,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:27:21,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-11-09 13:27:21,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433641785] [2020-11-09 13:27:21,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-09 13:27:21,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:27:21,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-09 13:27:21,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-11-09 13:27:21,100 INFO L87 Difference]: Start difference. First operand 116 states and 291 transitions. Second operand 13 states. [2020-11-09 13:27:21,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:27:21,808 INFO L93 Difference]: Finished difference Result 184 states and 440 transitions. [2020-11-09 13:27:21,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-09 13:27:21,809 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-11-09 13:27:21,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:27:21,811 INFO L225 Difference]: With dead ends: 184 [2020-11-09 13:27:21,812 INFO L226 Difference]: Without dead ends: 176 [2020-11-09 13:27:21,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=242, Invalid=628, Unknown=0, NotChecked=0, Total=870 [2020-11-09 13:27:21,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-11-09 13:27:21,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 114. [2020-11-09 13:27:21,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-11-09 13:27:21,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 281 transitions. [2020-11-09 13:27:21,819 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 281 transitions. Word has length 12 [2020-11-09 13:27:21,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:27:21,820 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 281 transitions. [2020-11-09 13:27:21,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-09 13:27:21,820 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 281 transitions. [2020-11-09 13:27:21,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 13:27:21,821 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:27:21,821 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:27:22,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:27:22,035 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:27:22,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:27:22,036 INFO L82 PathProgramCache]: Analyzing trace with hash 654546585, now seen corresponding path program 12 times [2020-11-09 13:27:22,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:27:22,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506284162] [2020-11-09 13:27:22,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:27:22,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:27:22,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:27:22,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506284162] [2020-11-09 13:27:22,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83407224] [2020-11-09 13:27:22,146 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:27:22,215 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-11-09 13:27:22,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:27:22,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-09 13:27:22,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:27:22,363 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 13:27:22,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:27:22,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:27:22,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-11-09 13:27:22,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780503887] [2020-11-09 13:27:22,423 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-09 13:27:22,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:27:22,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-09 13:27:22,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-11-09 13:27:22,425 INFO L87 Difference]: Start difference. First operand 114 states and 281 transitions. Second operand 13 states. [2020-11-09 13:27:23,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:27:23,292 INFO L93 Difference]: Finished difference Result 184 states and 437 transitions. [2020-11-09 13:27:23,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-09 13:27:23,293 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-11-09 13:27:23,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:27:23,295 INFO L225 Difference]: With dead ends: 184 [2020-11-09 13:27:23,295 INFO L226 Difference]: Without dead ends: 176 [2020-11-09 13:27:23,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=233, Invalid=637, Unknown=0, NotChecked=0, Total=870 [2020-11-09 13:27:23,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-11-09 13:27:23,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 119. [2020-11-09 13:27:23,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-11-09 13:27:23,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 289 transitions. [2020-11-09 13:27:23,302 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 289 transitions. Word has length 12 [2020-11-09 13:27:23,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:27:23,302 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 289 transitions. [2020-11-09 13:27:23,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-09 13:27:23,302 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 289 transitions. [2020-11-09 13:27:23,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 13:27:23,303 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:27:23,303 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:27:23,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:27:23,517 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:27:23,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:27:23,518 INFO L82 PathProgramCache]: Analyzing trace with hash 765369105, now seen corresponding path program 13 times [2020-11-09 13:27:23,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:27:23,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936420127] [2020-11-09 13:27:23,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:27:23,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:27:23,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:27:23,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936420127] [2020-11-09 13:27:23,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942522952] [2020-11-09 13:27:23,672 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:27:23,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:27:23,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-09 13:27:23,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:27:23,874 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 13:27:23,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:27:23,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:27:23,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-11-09 13:27:23,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564884942] [2020-11-09 13:27:23,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-09 13:27:23,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:27:23,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-09 13:27:23,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-11-09 13:27:23,893 INFO L87 Difference]: Start difference. First operand 119 states and 289 transitions. Second operand 13 states. [2020-11-09 13:27:24,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:27:24,650 INFO L93 Difference]: Finished difference Result 165 states and 388 transitions. [2020-11-09 13:27:24,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-09 13:27:24,651 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-11-09 13:27:24,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:27:24,652 INFO L225 Difference]: With dead ends: 165 [2020-11-09 13:27:24,652 INFO L226 Difference]: Without dead ends: 160 [2020-11-09 13:27:24,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=242, Invalid=628, Unknown=0, NotChecked=0, Total=870 [2020-11-09 13:27:24,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-11-09 13:27:24,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 114. [2020-11-09 13:27:24,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-11-09 13:27:24,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 268 transitions. [2020-11-09 13:27:24,658 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 268 transitions. Word has length 12 [2020-11-09 13:27:24,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:27:24,658 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 268 transitions. [2020-11-09 13:27:24,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-09 13:27:24,658 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 268 transitions. [2020-11-09 13:27:24,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 13:27:24,659 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:27:24,659 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:27:24,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-11-09 13:27:24,870 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:27:24,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:27:24,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1054169251, now seen corresponding path program 5 times [2020-11-09 13:27:24,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:27:24,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311034888] [2020-11-09 13:27:24,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:27:24,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:27:25,016 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:27:25,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311034888] [2020-11-09 13:27:25,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769478981] [2020-11-09 13:27:25,017 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:27:25,078 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-11-09 13:27:25,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:27:25,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-09 13:27:25,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:27:25,265 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 13:27:25,292 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:27:25,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:27:25,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-11-09 13:27:25,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193690094] [2020-11-09 13:27:25,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-09 13:27:25,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:27:25,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-09 13:27:25,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-11-09 13:27:25,294 INFO L87 Difference]: Start difference. First operand 114 states and 268 transitions. Second operand 15 states. [2020-11-09 13:27:25,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:27:25,792 INFO L93 Difference]: Finished difference Result 164 states and 382 transitions. [2020-11-09 13:27:25,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-09 13:27:25,793 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-11-09 13:27:25,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:27:25,795 INFO L225 Difference]: With dead ends: 164 [2020-11-09 13:27:25,795 INFO L226 Difference]: Without dead ends: 159 [2020-11-09 13:27:25,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=198, Invalid=452, Unknown=0, NotChecked=0, Total=650 [2020-11-09 13:27:25,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-11-09 13:27:25,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 122. [2020-11-09 13:27:25,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-11-09 13:27:25,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 299 transitions. [2020-11-09 13:27:25,802 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 299 transitions. Word has length 12 [2020-11-09 13:27:25,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:27:25,802 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 299 transitions. [2020-11-09 13:27:25,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-09 13:27:25,802 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 299 transitions. [2020-11-09 13:27:25,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 13:27:25,803 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:27:25,803 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:27:26,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-11-09 13:27:26,018 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:27:26,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:27:26,019 INFO L82 PathProgramCache]: Analyzing trace with hash 201645098, now seen corresponding path program 5 times [2020-11-09 13:27:26,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:27:26,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429697517] [2020-11-09 13:27:26,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:27:26,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:27:26,151 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:27:26,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429697517] [2020-11-09 13:27:26,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117415898] [2020-11-09 13:27:26,152 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 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:27:26,219 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-11-09 13:27:26,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:27:26,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-09 13:27:26,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:27:26,381 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 13:27:26,408 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:27:26,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:27:26,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-11-09 13:27:26,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095656231] [2020-11-09 13:27:26,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-09 13:27:26,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:27:26,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-09 13:27:26,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-11-09 13:27:26,411 INFO L87 Difference]: Start difference. First operand 122 states and 299 transitions. Second operand 15 states. [2020-11-09 13:27:26,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:27:26,952 INFO L93 Difference]: Finished difference Result 173 states and 412 transitions. [2020-11-09 13:27:26,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-09 13:27:26,957 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-11-09 13:27:26,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:27:26,958 INFO L225 Difference]: With dead ends: 173 [2020-11-09 13:27:26,958 INFO L226 Difference]: Without dead ends: 167 [2020-11-09 13:27:26,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=198, Invalid=452, Unknown=0, NotChecked=0, Total=650 [2020-11-09 13:27:26,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-11-09 13:27:26,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 132. [2020-11-09 13:27:26,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-11-09 13:27:26,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 332 transitions. [2020-11-09 13:27:26,968 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 332 transitions. Word has length 12 [2020-11-09 13:27:26,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:27:26,968 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 332 transitions. [2020-11-09 13:27:26,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-09 13:27:26,968 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 332 transitions. [2020-11-09 13:27:26,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 13:27:26,970 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:27:26,971 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:27:27,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-11-09 13:27:27,185 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:27:27,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:27:27,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1302074836, now seen corresponding path program 14 times [2020-11-09 13:27:27,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:27:27,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862405596] [2020-11-09 13:27:27,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:27:27,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:27:27,338 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:27:27,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862405596] [2020-11-09 13:27:27,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641290949] [2020-11-09 13:27:27,339 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:27:27,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-09 13:27:27,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:27:27,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-09 13:27:27,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:27:27,620 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 13:27:27,648 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:27:27,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:27:27,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-11-09 13:27:27,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786845085] [2020-11-09 13:27:27,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-09 13:27:27,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:27:27,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-09 13:27:27,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-11-09 13:27:27,656 INFO L87 Difference]: Start difference. First operand 132 states and 332 transitions. Second operand 15 states. [2020-11-09 13:27:28,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:27:28,611 INFO L93 Difference]: Finished difference Result 188 states and 448 transitions. [2020-11-09 13:27:28,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-09 13:27:28,612 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-11-09 13:27:28,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:27:28,614 INFO L225 Difference]: With dead ends: 188 [2020-11-09 13:27:28,614 INFO L226 Difference]: Without dead ends: 183 [2020-11-09 13:27:28,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=305, Invalid=751, Unknown=0, NotChecked=0, Total=1056 [2020-11-09 13:27:28,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-11-09 13:27:28,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 131. [2020-11-09 13:27:28,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-11-09 13:27:28,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 327 transitions. [2020-11-09 13:27:28,625 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 327 transitions. Word has length 13 [2020-11-09 13:27:28,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:27:28,627 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 327 transitions. [2020-11-09 13:27:28,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-09 13:27:28,627 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 327 transitions. [2020-11-09 13:27:28,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 13:27:28,629 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:27:28,630 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:27:28,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-11-09 13:27:28,842 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:27:28,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:27:28,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1301959516, now seen corresponding path program 15 times [2020-11-09 13:27:28,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:27:28,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891025215] [2020-11-09 13:27:28,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:27:28,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:27:28,994 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:27:28,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891025215] [2020-11-09 13:27:28,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648621919] [2020-11-09 13:27:28,995 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:27:29,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-09 13:27:29,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:27:29,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-09 13:27:29,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:27:29,299 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 13:27:32,950 WARN L194 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 20 [2020-11-09 13:27:32,952 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:27:32,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:27:32,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-11-09 13:27:32,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352374408] [2020-11-09 13:27:32,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-09 13:27:32,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:27:32,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-09 13:27:32,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=185, Unknown=1, NotChecked=0, Total=240 [2020-11-09 13:27:32,954 INFO L87 Difference]: Start difference. First operand 131 states and 327 transitions. Second operand 16 states. [2020-11-09 13:27:37,039 WARN L194 SmtUtils]: Spent 3.71 s on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2020-11-09 13:27:44,942 WARN L194 SmtUtils]: Spent 2.06 s on a formula simplification that was a NOOP. DAG size: 29 [2020-11-09 13:28:11,062 WARN L194 SmtUtils]: Spent 1.73 s on a formula simplification that was a NOOP. DAG size: 25 [2020-11-09 13:28:47,929 WARN L194 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 27 DAG size of output: 26 [2020-11-09 13:29:38,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:29:38,051 INFO L93 Difference]: Finished difference Result 216 states and 510 transitions. [2020-11-09 13:29:38,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-11-09 13:29:38,058 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 13 [2020-11-09 13:29:38,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:29:38,060 INFO L225 Difference]: With dead ends: 216 [2020-11-09 13:29:38,060 INFO L226 Difference]: Without dead ends: 211 [2020-11-09 13:29:38,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 5 SyntacticMatches, 5 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 69.2s TimeCoverageRelationStatistics Valid=388, Invalid=1072, Unknown=22, NotChecked=0, Total=1482 [2020-11-09 13:29:38,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-11-09 13:29:38,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 131. [2020-11-09 13:29:38,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-11-09 13:29:38,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 329 transitions. [2020-11-09 13:29:38,068 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 329 transitions. Word has length 13 [2020-11-09 13:29:38,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:29:38,069 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 329 transitions. [2020-11-09 13:29:38,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-09 13:29:38,069 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 329 transitions. [2020-11-09 13:29:38,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 13:29:38,070 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:29:38,070 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:29:38,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-11-09 13:29:38,271 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:29:38,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:29:38,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1301955672, now seen corresponding path program 16 times [2020-11-09 13:29:38,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:29:38,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060745210] [2020-11-09 13:29:38,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:29:38,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:29:38,431 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:29:38,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060745210] [2020-11-09 13:29:38,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132272457] [2020-11-09 13:29:38,432 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 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:29:38,505 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-09 13:29:38,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:29:38,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-09 13:29:38,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:29:38,690 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 13:29:38,723 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:29:38,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:29:38,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-11-09 13:29:38,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613562036] [2020-11-09 13:29:38,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-09 13:29:38,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:29:38,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-09 13:29:38,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-11-09 13:29:38,726 INFO L87 Difference]: Start difference. First operand 131 states and 329 transitions. Second operand 15 states. [2020-11-09 13:29:39,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:29:39,884 INFO L93 Difference]: Finished difference Result 194 states and 464 transitions. [2020-11-09 13:29:39,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-09 13:29:39,885 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-11-09 13:29:39,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:29:39,887 INFO L225 Difference]: With dead ends: 194 [2020-11-09 13:29:39,887 INFO L226 Difference]: Without dead ends: 189 [2020-11-09 13:29:39,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=389, Invalid=943, Unknown=0, NotChecked=0, Total=1332 [2020-11-09 13:29:39,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-11-09 13:29:39,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 129. [2020-11-09 13:29:39,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-11-09 13:29:39,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 319 transitions. [2020-11-09 13:29:39,894 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 319 transitions. Word has length 13 [2020-11-09 13:29:39,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:29:39,895 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 319 transitions. [2020-11-09 13:29:39,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-09 13:29:39,895 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 319 transitions. [2020-11-09 13:29:39,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 13:29:39,896 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:29:39,896 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:29:40,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:29:40,111 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:29:40,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:29:40,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1298384596, now seen corresponding path program 17 times [2020-11-09 13:29:40,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:29:40,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352824587] [2020-11-09 13:29:40,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:29:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:29:40,250 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:29:40,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352824587] [2020-11-09 13:29:40,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94223829] [2020-11-09 13:29:40,251 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 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:29:40,329 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-11-09 13:29:40,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:29:40,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-09 13:29:40,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:29:40,570 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 13:29:40,648 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:29:40,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:29:40,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-11-09 13:29:40,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496468891] [2020-11-09 13:29:40,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-09 13:29:40,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:29:40,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-09 13:29:40,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-11-09 13:29:40,650 INFO L87 Difference]: Start difference. First operand 129 states and 319 transitions. Second operand 15 states. [2020-11-09 13:29:41,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:29:41,659 INFO L93 Difference]: Finished difference Result 198 states and 472 transitions. [2020-11-09 13:29:41,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-09 13:29:41,660 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-11-09 13:29:41,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:29:41,662 INFO L225 Difference]: With dead ends: 198 [2020-11-09 13:29:41,662 INFO L226 Difference]: Without dead ends: 193 [2020-11-09 13:29:41,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2020-11-09 13:29:41,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-11-09 13:29:41,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 132. [2020-11-09 13:29:41,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-11-09 13:29:41,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 332 transitions. [2020-11-09 13:29:41,668 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 332 transitions. Word has length 13 [2020-11-09 13:29:41,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:29:41,668 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 332 transitions. [2020-11-09 13:29:41,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-09 13:29:41,669 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 332 transitions. [2020-11-09 13:29:41,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 13:29:41,669 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:29:41,669 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:29:41,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-11-09 13:29:41,882 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:29:41,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:29:41,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1298380752, now seen corresponding path program 18 times [2020-11-09 13:29:41,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:29:41,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734477824] [2020-11-09 13:29:41,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:29:41,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:29:41,989 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:29:41,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734477824] [2020-11-09 13:29:41,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894292379] [2020-11-09 13:29:41,990 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:29:42,053 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-11-09 13:29:42,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:29:42,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-09 13:29:42,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:29:42,294 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 13:29:42,354 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:29:42,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:29:42,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-11-09 13:29:42,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902412634] [2020-11-09 13:29:42,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-09 13:29:42,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:29:42,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-09 13:29:42,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-11-09 13:29:42,356 INFO L87 Difference]: Start difference. First operand 132 states and 332 transitions. Second operand 15 states. [2020-11-09 13:29:43,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:29:43,481 INFO L93 Difference]: Finished difference Result 206 states and 494 transitions. [2020-11-09 13:29:43,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-09 13:29:43,482 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-11-09 13:29:43,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:29:43,484 INFO L225 Difference]: With dead ends: 206 [2020-11-09 13:29:43,484 INFO L226 Difference]: Without dead ends: 198 [2020-11-09 13:29:43,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=308, Invalid=814, Unknown=0, NotChecked=0, Total=1122 [2020-11-09 13:29:43,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-11-09 13:29:43,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 131. [2020-11-09 13:29:43,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-11-09 13:29:43,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 327 transitions. [2020-11-09 13:29:43,493 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 327 transitions. Word has length 13 [2020-11-09 13:29:43,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:29:43,494 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 327 transitions. [2020-11-09 13:29:43,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-09 13:29:43,494 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 327 transitions. [2020-11-09 13:29:43,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 13:29:43,494 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:29:43,495 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:29:43,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-11-09 13:29:43,709 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:29:43,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:29:43,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1298265432, now seen corresponding path program 19 times [2020-11-09 13:29:43,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:29:43,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431274234] [2020-11-09 13:29:43,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:29:43,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:29:43,833 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:29:43,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431274234] [2020-11-09 13:29:43,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817184728] [2020-11-09 13:29:43,834 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 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:29:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:29:43,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-09 13:29:43,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:29:44,177 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 13:29:44,335 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:29:44,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:29:44,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-11-09 13:29:44,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74937247] [2020-11-09 13:29:44,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-09 13:29:44,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:29:44,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-09 13:29:44,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-11-09 13:29:44,337 INFO L87 Difference]: Start difference. First operand 131 states and 327 transitions. Second operand 15 states. [2020-11-09 13:29:45,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:29:45,438 INFO L93 Difference]: Finished difference Result 224 states and 536 transitions. [2020-11-09 13:29:45,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-09 13:29:45,443 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-11-09 13:29:45,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:29:45,444 INFO L225 Difference]: With dead ends: 224 [2020-11-09 13:29:45,444 INFO L226 Difference]: Without dead ends: 216 [2020-11-09 13:29:45,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=300, Invalid=822, Unknown=0, NotChecked=0, Total=1122 [2020-11-09 13:29:45,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-11-09 13:29:45,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 133. [2020-11-09 13:29:45,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-11-09 13:29:45,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 337 transitions. [2020-11-09 13:29:45,451 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 337 transitions. Word has length 13 [2020-11-09 13:29:45,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:29:45,451 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 337 transitions. [2020-11-09 13:29:45,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-09 13:29:45,451 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 337 transitions. [2020-11-09 13:29:45,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 13:29:45,452 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:29:45,452 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:29:45,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:29:45,664 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:29:45,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:29:45,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1187562076, now seen corresponding path program 20 times [2020-11-09 13:29:45,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:29:45,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411449702] [2020-11-09 13:29:45,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:29:45,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:29:45,785 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:29:45,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411449702] [2020-11-09 13:29:45,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971970399] [2020-11-09 13:29:45,786 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 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:29:45,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-09 13:29:45,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:29:45,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-09 13:29:45,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:29:46,035 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 13:29:46,062 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:29:46,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:29:46,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-11-09 13:29:46,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791930264] [2020-11-09 13:29:46,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-09 13:29:46,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:29:46,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-09 13:29:46,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-11-09 13:29:46,063 INFO L87 Difference]: Start difference. First operand 133 states and 337 transitions. Second operand 15 states. [2020-11-09 13:29:47,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:29:47,183 INFO L93 Difference]: Finished difference Result 226 states and 547 transitions. [2020-11-09 13:29:47,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-11-09 13:29:47,184 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-11-09 13:29:47,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:29:47,186 INFO L225 Difference]: With dead ends: 226 [2020-11-09 13:29:47,186 INFO L226 Difference]: Without dead ends: 218 [2020-11-09 13:29:47,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=415, Invalid=1145, Unknown=0, NotChecked=0, Total=1560 [2020-11-09 13:29:47,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-11-09 13:29:47,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 138. [2020-11-09 13:29:47,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-11-09 13:29:47,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 356 transitions. [2020-11-09 13:29:47,196 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 356 transitions. Word has length 13 [2020-11-09 13:29:47,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:29:47,197 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 356 transitions. [2020-11-09 13:29:47,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-09 13:29:47,197 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 356 transitions. [2020-11-09 13:29:47,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 13:29:47,200 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:29:47,200 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:29:47,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:29:47,415 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:29:47,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:29:47,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1187558232, now seen corresponding path program 21 times [2020-11-09 13:29:47,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:29:47,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591239579] [2020-11-09 13:29:47,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:29:47,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:29:47,557 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:29:47,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591239579] [2020-11-09 13:29:47,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795152250] [2020-11-09 13:29:47,558 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 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:29:47,623 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-09 13:29:47,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:29:47,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-09 13:29:47,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:29:47,806 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 13:29:47,828 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:29:47,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:29:47,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-11-09 13:29:47,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502106799] [2020-11-09 13:29:47,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-09 13:29:47,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:29:47,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-09 13:29:47,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-11-09 13:29:47,830 INFO L87 Difference]: Start difference. First operand 138 states and 356 transitions. Second operand 15 states. [2020-11-09 13:29:49,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:29:49,053 INFO L93 Difference]: Finished difference Result 230 states and 560 transitions. [2020-11-09 13:29:49,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-11-09 13:29:49,054 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-11-09 13:29:49,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:29:49,057 INFO L225 Difference]: With dead ends: 230 [2020-11-09 13:29:49,057 INFO L226 Difference]: Without dead ends: 222 [2020-11-09 13:29:49,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=399, Invalid=1161, Unknown=0, NotChecked=0, Total=1560 [2020-11-09 13:29:49,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-11-09 13:29:49,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 138. [2020-11-09 13:29:49,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-11-09 13:29:49,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 356 transitions. [2020-11-09 13:29:49,065 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 356 transitions. Word has length 13 [2020-11-09 13:29:49,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:29:49,065 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 356 transitions. [2020-11-09 13:29:49,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-09 13:29:49,065 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 356 transitions. [2020-11-09 13:29:49,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 13:29:49,066 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:29:49,066 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 13:29:49,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2020-11-09 13:29:49,279 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:29:49,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:29:49,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1187442912, now seen corresponding path program 22 times [2020-11-09 13:29:49,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:29:49,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490619883] [2020-11-09 13:29:49,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:29:49,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 13:29:49,406 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:29:49,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490619883] [2020-11-09 13:29:49,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971262250] [2020-11-09 13:29:49,407 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 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:29:49,470 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-09 13:29:49,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:29:49,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-09 13:29:49,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:29:49,632 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 13:29:49,650 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 13:29:49,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 13:29:49,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-11-09 13:29:49,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465410693] [2020-11-09 13:29:49,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-09 13:29:49,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 13:29:49,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-09 13:29:49,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-11-09 13:29:49,653 INFO L87 Difference]: Start difference. First operand 138 states and 356 transitions. Second operand 15 states. [2020-11-09 13:29:50,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 13:29:50,622 INFO L93 Difference]: Finished difference Result 230 states and 558 transitions. [2020-11-09 13:29:50,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-11-09 13:29:50,622 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-11-09 13:29:50,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 13:29:50,624 INFO L225 Difference]: With dead ends: 230 [2020-11-09 13:29:50,624 INFO L226 Difference]: Without dead ends: 222 [2020-11-09 13:29:50,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=350, Invalid=982, Unknown=0, NotChecked=0, Total=1332 [2020-11-09 13:29:50,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-11-09 13:29:50,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 134. [2020-11-09 13:29:50,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-11-09 13:29:50,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 342 transitions. [2020-11-09 13:29:50,630 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 342 transitions. Word has length 13 [2020-11-09 13:29:50,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 13:29:50,631 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 342 transitions. [2020-11-09 13:29:50,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-09 13:29:50,631 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 342 transitions. [2020-11-09 13:29:50,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 13:29:50,631 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 13:29:50,631 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] Received shutdown request... [2020-11-09 13:29:50,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:29:50,842 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 13:29:50,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 13:29:50,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1187439068, now seen corresponding path program 23 times [2020-11-09 13:29:50,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 13:29:50,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112848675] [2020-11-09 13:29:50,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 13:29:50,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2020-11-09 13:29:50,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [128052300] [2020-11-09 13:29:50,849 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 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 13:29:50,916 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-09 13:29:50,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 13:29:50,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-09 13:29:50,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 13:29:50,920 WARN L211 SmtUtils]: Removed 1 from assertion stack [2020-11-09 13:29:51,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-11-09 13:29:51,121 WARN L546 AbstractCegarLoop]: Verification canceled [2020-11-09 13:29:51,125 WARN L250 ceAbstractionStarter]: Timeout [2020-11-09 13:29:51,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 01:29:51 BasicIcfg [2020-11-09 13:29:51,125 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 13:29:51,126 INFO L168 Benchmark]: Toolchain (without parser) took 273526.67 ms. Allocated memory was 157.3 MB in the beginning and 287.3 MB in the end (delta: 130.0 MB). Free memory was 130.9 MB in the beginning and 216.6 MB in the end (delta: -85.7 MB). Peak memory consumption was 45.7 MB. Max. memory is 8.0 GB. [2020-11-09 13:29:51,126 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 157.3 MB. Free memory is still 131.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 13:29:51,127 INFO L168 Benchmark]: CACSL2BoogieTranslator took 838.83 ms. Allocated memory is still 157.3 MB. Free memory was 130.1 MB in the beginning and 135.7 MB in the end (delta: -5.6 MB). Peak memory consumption was 30.1 MB. Max. memory is 8.0 GB. [2020-11-09 13:29:51,127 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.86 ms. Allocated memory is still 157.3 MB. Free memory was 135.7 MB in the beginning and 133.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 13:29:51,127 INFO L168 Benchmark]: Boogie Preprocessor took 65.68 ms. Allocated memory is still 157.3 MB. Free memory was 133.7 MB in the beginning and 132.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 13:29:51,127 INFO L168 Benchmark]: RCFGBuilder took 623.26 ms. Allocated memory is still 157.3 MB. Free memory was 132.1 MB in the beginning and 112.2 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2020-11-09 13:29:51,128 INFO L168 Benchmark]: TraceAbstraction took 271891.35 ms. Allocated memory was 157.3 MB in the beginning and 287.3 MB in the end (delta: 130.0 MB). Free memory was 111.7 MB in the beginning and 216.6 MB in the end (delta: -105.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 8.0 GB. [2020-11-09 13:29:51,129 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 157.3 MB. Free memory is still 131.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 838.83 ms. Allocated memory is still 157.3 MB. Free memory was 130.1 MB in the beginning and 135.7 MB in the end (delta: -5.6 MB). Peak memory consumption was 30.1 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 90.86 ms. Allocated memory is still 157.3 MB. Free memory was 135.7 MB in the beginning and 133.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 65.68 ms. Allocated memory is still 157.3 MB. Free memory was 133.7 MB in the beginning and 132.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 623.26 ms. Allocated memory is still 157.3 MB. Free memory was 132.1 MB in the beginning and 112.2 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 271891.35 ms. Allocated memory was 157.3 MB in the beginning and 287.3 MB in the end (delta: 130.0 MB). Free memory was 111.7 MB in the beginning and 216.6 MB in the end (delta: -105.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 713 VarBasedMoverChecksPositive, 14 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 17 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.8s, 67 PlacesBefore, 20 PlacesAfterwards, 66 TransitionsBefore, 16 TransitionsAfterwards, 1272 CoEnabledTransitionPairs, 5 FixpointIterations, 16 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 3 ChoiceCompositions, 63 TotalNumberOfCompositions, 1215 MoverChecksTotal - TimeoutResultAtElement [Line: 12]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 12). Cancelled while BasicCegarLoop was analyzing trace of length 14 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 6 for 0ms.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 271.7s, OverallIterations: 34, TraceHistogramMax: 5, AutomataDifference: 244.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: 429 SDtfs, 4219 SDslu, 3318 SDs, 0 SdLazy, 2683 SolverSat, 704 SolverUnsat, 65 SolverUnknown, 0 SolverNotchecked, 129.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 922 GetRequests, 132 SyntacticMatches, 32 SemanticMatches, 758 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4895 ImplicationChecksByTransitivity, 123.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=138occurred in iteration=31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 33 MinimizatonAttempts, 1440 StatesRemovedByMinimization, 33 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 14.2s InterpolantComputationTime, 700 NumberOfCodeBlocks, 700 NumberOfCodeBlocksAsserted, 91 NumberOfCheckSat, 639 ConstructedInterpolants, 2 QuantifiedInterpolants, 75171 SizeOfPredicates, 28 NumberOfNonLiveVariables, 2701 ConjunctsInSsa, 253 ConjunctsInUnsatCore, 61 InterpolantComputations, 5 PerfectInterpolantSequences, 0/210 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