/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/tree_del_rec.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 15:59:47,404 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 15:59:47,408 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 15:59:47,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 15:59:47,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 15:59:47,444 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 15:59:47,447 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 15:59:47,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 15:59:47,457 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 15:59:47,458 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 15:59:47,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 15:59:47,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 15:59:47,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 15:59:47,463 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 15:59:47,466 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 15:59:47,469 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 15:59:47,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 15:59:47,473 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 15:59:47,476 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 15:59:47,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 15:59:47,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 15:59:47,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 15:59:47,489 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 15:59:47,490 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 15:59:47,503 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 15:59:47,503 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 15:59:47,503 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 15:59:47,504 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 15:59:47,509 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 15:59:47,510 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 15:59:47,510 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 15:59:47,511 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 15:59:47,515 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 15:59:47,516 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 15:59:47,520 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 15:59:47,520 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 15:59:47,523 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 15:59:47,524 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 15:59:47,524 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 15:59:47,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 15:59:47,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 15:59:47,528 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 15:59:47,573 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 15:59:47,573 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 15:59:47,576 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 15:59:47,576 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 15:59:47,576 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 15:59:47,576 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 15:59:47,577 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 15:59:47,577 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 15:59:47,577 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 15:59:47,577 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 15:59:47,578 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 15:59:47,579 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 15:59:47,579 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 15:59:47,580 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 15:59:47,580 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 15:59:47,580 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 15:59:47,580 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 15:59:47,580 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 15:59:47,581 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 15:59:47,581 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 15:59:47,581 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 15:59:47,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:59:47,582 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 15:59:47,582 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 15:59:47,582 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 15:59:47,582 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 15:59:47,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 15:59:47,583 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 15:59:47,583 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 15:59:47,583 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 15:59:48,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 15:59:48,091 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 15:59:48,096 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 15:59:48,098 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 15:59:48,098 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 15:59:48,099 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/tree_del_rec.c [2020-09-24 15:59:48,189 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/562e421b4/c5ad9efee1ad45008ec1e712d960b45f/FLAGe49e7c08f [2020-09-24 15:59:48,769 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 15:59:48,770 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/tree_del_rec.c [2020-09-24 15:59:48,781 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/562e421b4/c5ad9efee1ad45008ec1e712d960b45f/FLAGe49e7c08f [2020-09-24 15:59:49,069 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/562e421b4/c5ad9efee1ad45008ec1e712d960b45f [2020-09-24 15:59:49,083 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 15:59:49,090 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 15:59:49,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 15:59:49,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 15:59:49,096 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 15:59:49,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:59:49" (1/1) ... [2020-09-24 15:59:49,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cc3fb97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:59:49, skipping insertion in model container [2020-09-24 15:59:49,102 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:59:49" (1/1) ... [2020-09-24 15:59:49,112 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 15:59:49,148 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 15:59:49,372 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-24 15:59:49,375 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-24 15:59:49,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:59:49,413 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 15:59:49,565 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-24 15:59:49,568 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-24 15:59:49,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:59:49,617 INFO L208 MainTranslator]: Completed translation [2020-09-24 15:59:49,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:59:49 WrapperNode [2020-09-24 15:59:49,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 15:59:49,619 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 15:59:49,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 15:59:49,620 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 15:59:49,634 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:59:49" (1/1) ... [2020-09-24 15:59:49,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:59:49" (1/1) ... [2020-09-24 15:59:49,649 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:59:49" (1/1) ... [2020-09-24 15:59:49,649 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:59:49" (1/1) ... [2020-09-24 15:59:49,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:59:49" (1/1) ... [2020-09-24 15:59:49,677 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:59:49" (1/1) ... [2020-09-24 15:59:49,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:59:49" (1/1) ... [2020-09-24 15:59:49,685 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 15:59:49,686 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 15:59:49,686 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 15:59:49,686 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 15:59:49,689 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:59:49" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-24 15:59:49,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 15:59:49,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 15:59:49,774 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_cycle_if_not [2020-09-24 15:59:49,774 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 15:59:49,774 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2020-09-24 15:59:49,775 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2020-09-24 15:59:49,775 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del [2020-09-24 15:59:49,775 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2020-09-24 15:59:49,775 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2020-09-24 15:59:49,775 INFO L138 BoogieDeclarations]: Found implementation of procedure task [2020-09-24 15:59:49,776 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 15:59:49,776 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-24 15:59:49,776 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 15:59:49,776 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 15:59:49,776 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 15:59:49,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 15:59:49,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 15:59:49,777 INFO L130 BoogieDeclarations]: Found specification of procedure assume_cycle_if_not [2020-09-24 15:59:49,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 15:59:49,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 15:59:49,778 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2020-09-24 15:59:49,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 15:59:49,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 15:59:49,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 15:59:49,779 INFO L130 BoogieDeclarations]: Found specification of procedure min [2020-09-24 15:59:49,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 15:59:49,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 15:59:49,779 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del [2020-09-24 15:59:49,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 15:59:49,779 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2020-09-24 15:59:49,780 INFO L130 BoogieDeclarations]: Found specification of procedure size [2020-09-24 15:59:49,780 INFO L130 BoogieDeclarations]: Found specification of procedure task [2020-09-24 15:59:49,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 15:59:49,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-24 15:59:49,780 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 15:59:49,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 15:59:49,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 15:59:50,395 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 15:59:50,395 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 15:59:50,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:59:50 BoogieIcfgContainer [2020-09-24 15:59:50,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 15:59:50,415 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 15:59:50,415 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 15:59:50,420 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 15:59:50,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 03:59:49" (1/3) ... [2020-09-24 15:59:50,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@756413f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:59:50, skipping insertion in model container [2020-09-24 15:59:50,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:59:49" (2/3) ... [2020-09-24 15:59:50,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@756413f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:59:50, skipping insertion in model container [2020-09-24 15:59:50,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:59:50" (3/3) ... [2020-09-24 15:59:50,427 INFO L109 eAbstractionObserver]: Analyzing ICFG tree_del_rec.c [2020-09-24 15:59:50,440 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 15:59:50,454 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 15:59:50,478 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 15:59:50,523 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 15:59:50,523 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 15:59:50,523 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 15:59:50,523 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 15:59:50,523 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 15:59:50,523 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 15:59:50,524 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 15:59:50,524 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 15:59:50,550 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states. [2020-09-24 15:59:50,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-24 15:59:50,566 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:59:50,567 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:59:50,568 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:59:50,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:59:50,575 INFO L82 PathProgramCache]: Analyzing trace with hash -2147081424, now seen corresponding path program 1 times [2020-09-24 15:59:50,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:59:50,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11512492] [2020-09-24 15:59:50,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:59:50,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:50,835 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:50,836 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:50,836 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:50,836 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:50,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 15:59:50,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:50,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 15:59:50,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:50,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 15:59:50,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 15:59:50,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 15:59:50,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:50,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:59:50,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:50,998 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:50,999 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:50,999 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:50,999 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:51,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:59:51,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:51,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:59:51,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:51,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:59:51,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:51,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:59:51,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:51,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 15:59:51,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:51,041 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:51,041 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:51,041 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:51,042 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:51,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:59:51,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:51,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:59:51,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:51,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:59:51,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:51,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:59:51,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:51,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 15:59:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:51,054 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:51,054 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:51,055 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:51,055 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:51,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:59:51,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:51,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:59:51,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:51,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:59:51,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:51,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:59:51,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:51,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 15:59:51,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:51,072 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:51,072 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:51,073 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:51,073 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:51,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:59:51,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:51,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 15:59:51,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:51,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 15:59:51,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:51,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:59:51,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:51,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 15:59:51,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:51,112 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:51,113 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:51,113 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:51,113 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:51,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 15:59:51,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:51,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 15:59:51,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:51,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:59:51,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 15:59:51,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:59:51,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 15:59:51,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 15:59:51,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:51,225 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:51,225 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:51,226 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:51,226 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:51,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 15:59:51,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:51,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:59:51,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:51,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:59:51,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 15:59:51,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:59:51,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:51,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 15:59:51,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:51,266 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:51,266 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:51,266 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:51,267 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:51,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 15:59:51,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:51,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:59:51,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:51,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:59:51,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 15:59:51,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:59:51,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:51,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:59:51,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11512492] [2020-09-24 15:59:51,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:59:51,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 15:59:51,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999274523] [2020-09-24 15:59:51,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 15:59:51,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:59:51,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 15:59:51,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 15:59:51,320 INFO L87 Difference]: Start difference. First operand 190 states. Second operand 11 states. [2020-09-24 15:59:52,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:59:52,579 INFO L93 Difference]: Finished difference Result 333 states and 391 transitions. [2020-09-24 15:59:52,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 15:59:52,581 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-09-24 15:59:52,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:59:52,601 INFO L225 Difference]: With dead ends: 333 [2020-09-24 15:59:52,601 INFO L226 Difference]: Without dead ends: 193 [2020-09-24 15:59:52,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2020-09-24 15:59:52,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-09-24 15:59:52,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 180. [2020-09-24 15:59:52,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-09-24 15:59:52,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 204 transitions. [2020-09-24 15:59:52,703 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 204 transitions. Word has length 60 [2020-09-24 15:59:52,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:59:52,704 INFO L479 AbstractCegarLoop]: Abstraction has 180 states and 204 transitions. [2020-09-24 15:59:52,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 15:59:52,704 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 204 transitions. [2020-09-24 15:59:52,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-24 15:59:52,710 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:59:52,710 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:59:52,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 15:59:52,711 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:59:52,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:59:52,711 INFO L82 PathProgramCache]: Analyzing trace with hash 394479658, now seen corresponding path program 1 times [2020-09-24 15:59:52,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:59:52,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404003464] [2020-09-24 15:59:52,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:59:52,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:52,790 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:52,793 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:52,793 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:52,793 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:52,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-24 15:59:52,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:52,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 15:59:52,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:52,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 15:59:52,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 15:59:52,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 15:59:52,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:52,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:59:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:52,930 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:52,930 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:52,930 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:52,931 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:52,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:59:52,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:52,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:59:52,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:52,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:59:52,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:52,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:59:52,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:52,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 15:59:52,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:52,961 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:52,961 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:52,961 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:52,962 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:52,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:59:52,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:52,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 15:59:52,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:52,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 15:59:52,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:52,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:59:52,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:52,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 15:59:52,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:52,987 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:52,987 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:52,988 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:52,988 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:52,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:59:52,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:52,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:59:52,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:52,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:59:52,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:52,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:59:52,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:52,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 15:59:53,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:53,010 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:53,010 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:53,010 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:53,010 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:53,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 15:59:53,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:53,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 15:59:53,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:53,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:59:53,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 15:59:53,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 15:59:53,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:53,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:59:53,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:53,063 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:53,063 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:53,063 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:53,063 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:53,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:59:53,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:53,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:59:53,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:53,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:59:53,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:53,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:59:53,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:53,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 15:59:53,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:53,074 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:53,074 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:53,074 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:53,074 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:53,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:59:53,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:53,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:59:53,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:53,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:59:53,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:53,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:59:53,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:53,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-24 15:59:53,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:53,084 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:53,084 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:53,084 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:53,085 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:53,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 15:59:53,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:53,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:59:53,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:53,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:59:53,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 15:59:53,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:59:53,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:53,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-24 15:59:53,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:53,103 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:53,103 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:53,104 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:53,104 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:53,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 15:59:53,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:53,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:59:53,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:53,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:59:53,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 15:59:53,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:59:53,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:53,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-24 15:59:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:53,130 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:53,130 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:53,130 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:53,131 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:53,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 15:59:53,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:53,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:59:53,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:53,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:59:53,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 15:59:53,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:59:53,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:53,146 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 15:59:53,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404003464] [2020-09-24 15:59:53,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:59:53,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 15:59:53,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533136705] [2020-09-24 15:59:53,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 15:59:53,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:59:53,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 15:59:53,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-09-24 15:59:53,151 INFO L87 Difference]: Start difference. First operand 180 states and 204 transitions. Second operand 12 states. [2020-09-24 15:59:54,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:59:54,467 INFO L93 Difference]: Finished difference Result 321 states and 367 transitions. [2020-09-24 15:59:54,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 15:59:54,468 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 80 [2020-09-24 15:59:54,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:59:54,476 INFO L225 Difference]: With dead ends: 321 [2020-09-24 15:59:54,476 INFO L226 Difference]: Without dead ends: 192 [2020-09-24 15:59:54,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2020-09-24 15:59:54,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-09-24 15:59:54,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 182. [2020-09-24 15:59:54,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-09-24 15:59:54,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 207 transitions. [2020-09-24 15:59:54,521 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 207 transitions. Word has length 80 [2020-09-24 15:59:54,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:59:54,522 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 207 transitions. [2020-09-24 15:59:54,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 15:59:54,522 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 207 transitions. [2020-09-24 15:59:54,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-24 15:59:54,534 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:59:54,535 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:59:54,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 15:59:54,535 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:59:54,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:59:54,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1011523, now seen corresponding path program 1 times [2020-09-24 15:59:54,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:59:54,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578120684] [2020-09-24 15:59:54,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:59:54,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:54,609 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:54,610 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:54,610 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:54,610 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:54,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-24 15:59:54,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:54,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 15:59:54,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:54,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 15:59:54,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 15:59:54,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 15:59:54,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:54,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:59:54,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:54,673 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:54,674 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:54,674 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:54,674 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:54,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:59:54,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:54,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:59:54,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:54,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:59:54,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:54,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:59:54,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:54,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 15:59:54,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:54,721 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:54,722 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:54,722 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:54,722 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:54,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 15:59:54,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:54,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 15:59:54,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:54,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:59:54,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:54,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 15:59:54,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:54,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 15:59:54,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:54,779 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:54,780 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:54,780 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:54,780 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:54,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:59:54,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:54,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:59:54,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:54,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:59:54,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:54,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:59:54,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:54,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 15:59:54,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:54,790 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:54,790 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:54,791 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:54,791 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:54,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:59:54,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:54,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:59:54,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:54,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:59:54,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:54,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:59:54,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:54,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 15:59:54,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:54,805 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:54,805 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:54,805 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:54,805 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:54,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:59:54,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:54,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 15:59:54,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:54,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:59:54,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 15:59:54,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:59:54,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:54,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 15:59:54,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:54,848 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:54,848 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:54,849 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:54,849 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:54,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 15:59:54,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:54,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:59:54,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:54,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:59:54,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-24 15:59:54,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:59:54,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:54,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:59:54,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:54,859 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:54,859 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:54,859 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:54,859 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:54,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:59:54,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:54,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:59:54,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:54,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:59:54,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:54,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:59:54,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:54,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 15:59:54,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:54,865 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:54,865 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:54,866 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:54,866 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:54,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:59:54,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:54,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:59:54,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:54,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:59:54,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:54,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:59:54,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:54,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-24 15:59:54,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:54,872 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:54,872 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:54,872 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:54,873 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:54,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 15:59:54,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:54,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:59:54,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:54,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:59:54,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 15:59:54,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:59:54,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:54,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-24 15:59:54,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:54,892 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:54,892 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:54,892 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:54,892 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:54,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 15:59:54,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:54,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:59:54,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:54,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:59:54,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 15:59:54,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:59:54,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:54,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 15:59:54,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:54,919 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:54,920 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:54,920 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:54,920 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:54,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 15:59:54,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:54,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:59:54,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:54,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:59:54,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 15:59:54,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:59:54,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:54,935 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-24 15:59:54,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [578120684] [2020-09-24 15:59:54,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:59:54,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-24 15:59:54,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821237601] [2020-09-24 15:59:54,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 15:59:54,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:59:54,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 15:59:54,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-24 15:59:54,938 INFO L87 Difference]: Start difference. First operand 182 states and 207 transitions. Second operand 14 states. [2020-09-24 15:59:56,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:59:56,346 INFO L93 Difference]: Finished difference Result 320 states and 366 transitions. [2020-09-24 15:59:56,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 15:59:56,346 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 101 [2020-09-24 15:59:56,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:59:56,352 INFO L225 Difference]: With dead ends: 320 [2020-09-24 15:59:56,352 INFO L226 Difference]: Without dead ends: 194 [2020-09-24 15:59:56,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2020-09-24 15:59:56,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-09-24 15:59:56,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 184. [2020-09-24 15:59:56,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-09-24 15:59:56,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 210 transitions. [2020-09-24 15:59:56,400 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 210 transitions. Word has length 101 [2020-09-24 15:59:56,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:59:56,401 INFO L479 AbstractCegarLoop]: Abstraction has 184 states and 210 transitions. [2020-09-24 15:59:56,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 15:59:56,401 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 210 transitions. [2020-09-24 15:59:56,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-24 15:59:56,407 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:59:56,407 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:59:56,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 15:59:56,408 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:59:56,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:59:56,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1431902021, now seen corresponding path program 1 times [2020-09-24 15:59:56,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:59:56,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83782433] [2020-09-24 15:59:56,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:59:56,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:56,479 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:56,479 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:56,479 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:56,480 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:56,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-24 15:59:56,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:56,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 15:59:56,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:56,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 15:59:56,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 15:59:56,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-24 15:59:56,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:56,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:59:56,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:56,558 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:56,558 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:56,558 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:56,559 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:56,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:59:56,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:56,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:59:56,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:56,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:59:56,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:56,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:59:56,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:56,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 15:59:56,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:56,600 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:56,601 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:56,601 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:56,601 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:56,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 15:59:56,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:56,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 15:59:56,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:56,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 15:59:56,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:56,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 15:59:56,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:56,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 15:59:56,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:56,654 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:56,654 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:56,654 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:56,654 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:56,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:59:56,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:56,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:59:56,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:56,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:59:56,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:56,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:59:56,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:56,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 15:59:56,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:56,667 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:56,667 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:56,667 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:56,667 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:56,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:59:56,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:56,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:59:56,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:56,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:59:56,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:56,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:59:56,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:56,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 15:59:56,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:56,682 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:56,683 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:56,683 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:56,683 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:56,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 15:59:56,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:56,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:59:56,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:56,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:59:56,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:56,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 15:59:56,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:56,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 15:59:56,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:56,695 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:56,695 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:56,696 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:56,696 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:56,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:59:56,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:56,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:59:56,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:56,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:59:56,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:56,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:59:56,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:56,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-09-24 15:59:56,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:56,702 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:56,702 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:56,703 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:56,703 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:56,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:59:56,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:56,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:59:56,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:56,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:59:56,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:56,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:59:56,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:56,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-24 15:59:56,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:56,717 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:56,717 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:56,718 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:56,718 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:56,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 15:59:56,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:56,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:59:56,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:56,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:59:56,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:56,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 15:59:56,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:56,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 15:59:56,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:56,729 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:56,729 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:56,729 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:56,730 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:56,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:59:56,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:56,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:59:56,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:56,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:59:56,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:56,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:59:56,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:56,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 15:59:56,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:56,735 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:56,735 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:56,736 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:56,736 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:56,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:59:56,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:56,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:59:56,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:56,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:59:56,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:56,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:59:56,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:56,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-09-24 15:59:56,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:56,744 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:56,744 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:56,745 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:56,745 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:56,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 15:59:56,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:56,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:59:56,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:56,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:59:56,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:56,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:59:56,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:56,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-24 15:59:56,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:56,764 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:56,764 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:56,764 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:56,764 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:56,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 15:59:56,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:56,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:59:56,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:56,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 15:59:56,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:56,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 15:59:56,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:56,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-09-24 15:59:56,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:56,794 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:56,794 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:56,794 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:56,795 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:56,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 15:59:56,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:56,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 15:59:56,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:56,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:59:56,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 15:59:56,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 15:59:56,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:56,863 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-24 15:59:56,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83782433] [2020-09-24 15:59:56,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:59:56,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-24 15:59:56,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330226132] [2020-09-24 15:59:56,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 15:59:56,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:59:56,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 15:59:56,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-24 15:59:56,866 INFO L87 Difference]: Start difference. First operand 184 states and 210 transitions. Second operand 14 states. [2020-09-24 15:59:58,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:59:58,150 INFO L93 Difference]: Finished difference Result 303 states and 345 transitions. [2020-09-24 15:59:58,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 15:59:58,150 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 127 [2020-09-24 15:59:58,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:59:58,154 INFO L225 Difference]: With dead ends: 303 [2020-09-24 15:59:58,155 INFO L226 Difference]: Without dead ends: 194 [2020-09-24 15:59:58,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2020-09-24 15:59:58,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-09-24 15:59:58,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 186. [2020-09-24 15:59:58,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-09-24 15:59:58,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 213 transitions. [2020-09-24 15:59:58,185 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 213 transitions. Word has length 127 [2020-09-24 15:59:58,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:59:58,200 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 213 transitions. [2020-09-24 15:59:58,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 15:59:58,200 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 213 transitions. [2020-09-24 15:59:58,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-24 15:59:58,203 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:59:58,203 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:59:58,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 15:59:58,204 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:59:58,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:59:58,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1422485650, now seen corresponding path program 1 times [2020-09-24 15:59:58,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:59:58,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1533254923] [2020-09-24 15:59:58,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:59:58,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 15:59:58,271 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 15:59:58,272 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 15:59:58,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 15:59:58,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 03:59:58 BoogieIcfgContainer [2020-09-24 15:59:58,309 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 15:59:58,316 INFO L168 Benchmark]: Toolchain (without parser) took 9226.93 ms. Allocated memory was 138.9 MB in the beginning and 321.4 MB in the end (delta: 182.5 MB). Free memory was 101.6 MB in the beginning and 273.8 MB in the end (delta: -172.2 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-24 15:59:58,318 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 15:59:58,322 INFO L168 Benchmark]: CACSL2BoogieTranslator took 527.46 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 101.0 MB in the beginning and 178.4 MB in the end (delta: -77.4 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-09-24 15:59:58,328 INFO L168 Benchmark]: Boogie Preprocessor took 65.99 ms. Allocated memory is still 202.4 MB. Free memory was 178.4 MB in the beginning and 176.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-24 15:59:58,332 INFO L168 Benchmark]: RCFGBuilder took 727.40 ms. Allocated memory is still 202.4 MB. Free memory was 175.7 MB in the beginning and 134.2 MB in the end (delta: 41.5 MB). Peak memory consumption was 41.5 MB. Max. memory is 7.1 GB. [2020-09-24 15:59:58,333 INFO L168 Benchmark]: TraceAbstraction took 7894.81 ms. Allocated memory was 202.4 MB in the beginning and 321.4 MB in the end (delta: 119.0 MB). Free memory was 133.5 MB in the beginning and 273.8 MB in the end (delta: -140.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 15:59:58,339 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 527.46 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 101.0 MB in the beginning and 178.4 MB in the end (delta: -77.4 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 65.99 ms. Allocated memory is still 202.4 MB. Free memory was 178.4 MB in the beginning and 176.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 727.40 ms. Allocated memory is still 202.4 MB. Free memory was 175.7 MB in the beginning and 134.2 MB in the end (delta: 41.5 MB). Peak memory consumption was 41.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7894.81 ms. Allocated memory was 202.4 MB in the beginning and 321.4 MB in the end (delta: 119.0 MB). Free memory was 133.5 MB in the beginning and 273.8 MB in the end (delta: -140.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 14]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L100] CALL, EXPR nondet_tree() [L23] COND FALSE !(__VERIFIER_nondet_bool()) [L26] struct node *n = (struct node *)malloc(sizeof(struct node)); [L27] n->data = __VERIFIER_nondet_int() [L28] CALL, EXPR nondet_tree() [L23] COND TRUE __VERIFIER_nondet_bool() [L24] return 0; [L28] RET, EXPR nondet_tree() [L28] n->left = nondet_tree() [L29] CALL, EXPR nondet_tree() [L23] COND TRUE __VERIFIER_nondet_bool() [L24] return 0; [L29] RET, EXPR nondet_tree() [L29] n->right = nondet_tree() [L30] return n; [L100] RET, EXPR nondet_tree() [L100] CALL task(nondet_tree()) [L76] CALL, EXPR min(t) [L35] COND FALSE !(!n) [L38] EXPR n->data [L38] int a = n->data; [L39] EXPR n->left [L39] CALL, EXPR min(n->left) [L35] COND TRUE !n [L36] return 2147483647; [L39] RET, EXPR min(n->left) [L39] int b = min(n->left); [L40] EXPR n->right [L40] CALL, EXPR min(n->right) [L35] COND TRUE !n [L36] return 2147483647; [L40] RET, EXPR min(n->right) [L40] int c = min(n->right); [L41] COND TRUE b <= a && b <= c [L41] return b; [L76] RET, EXPR min(t) [L76] int a = min(t); [L77] int b; [L79] CALL, EXPR size(t) [L71] COND FALSE !(!t) [L72] EXPR t->left [L72] CALL, EXPR size(t->left) [L71] COND TRUE !t [L71] return 0; [L72] RET, EXPR size(t->left) [L72] EXPR t->right [L72] CALL, EXPR size(t->right) [L71] COND TRUE !t [L71] return 0; [L72] RET, EXPR size(t->right) [L72] return size(t->left) + size(t->right) + 1; [L79] RET, EXPR size(t) [L79] int n = size(t); [L80] CALL assume_cycle_if_not(n != 0) [L9] COND FALSE !(!cond) [L80] RET assume_cycle_if_not(n != 0) [L81] EXPR, FCALL calloc(n, sizeof(int)) [L81] int *x = calloc(n, sizeof(int)); [L82] CALL tree_inorder(t, x, n) [L60] COND FALSE !(!t) [L63] EXPR t->left [L63] CALL, EXPR tree_inorder(t->left, a, i) [L60] COND TRUE !t [L61] return i; [L63] RET, EXPR tree_inorder(t->left, a, i) [L63] i = tree_inorder(t->left, a, i) [L64] EXPR i++ [L64] EXPR t->data [L64] a[i++] = t->data [L65] EXPR t->right [L65] CALL, EXPR tree_inorder(t->right, a, i) [L60] COND TRUE !t [L61] return i; [L65] RET, EXPR tree_inorder(t->right, a, i) [L65] i = tree_inorder(t->right, a, i) [L66] return i; [L82] RET tree_inorder(t, x, n) [L83] EXPR x[0] [L83] CALL __VERIFIER_assert(a == x[0]) [L14] COND TRUE !cond [L14] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 190 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.7s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 686 SDtfs, 1400 SDslu, 2282 SDs, 0 SdLazy, 3917 SolverSat, 554 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 156 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=190occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 41 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 527 NumberOfCodeBlocks, 527 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 364 ConstructedInterpolants, 0 QuantifiedInterpolants, 90464 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 72/74 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 proved your program to be incorrect! Received shutdown request...