/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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER --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_incorrect.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:41:59,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:41:59,610 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:41:59,664 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:41:59,665 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:41:59,676 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:41:59,679 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:41:59,683 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:41:59,686 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:41:59,690 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:41:59,691 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:41:59,692 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:41:59,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:41:59,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:41:59,700 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:41:59,702 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:41:59,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:41:59,706 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:41:59,708 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:41:59,718 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:41:59,721 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:41:59,723 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:41:59,724 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:41:59,725 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:41:59,728 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:41:59,728 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:41:59,728 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:41:59,732 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:41:59,732 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:41:59,733 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:41:59,734 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:41:59,735 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:41:59,736 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:41:59,736 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:41:59,737 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:41:59,738 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:41:59,741 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:41:59,742 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:41:59,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:41:59,743 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:41:59,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:41:59,746 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 22:41:59,797 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:41:59,798 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:41:59,799 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:41:59,800 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:41:59,800 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:41:59,800 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:41:59,801 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:41:59,801 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:41:59,801 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:41:59,801 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:41:59,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:41:59,803 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:41:59,803 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:41:59,804 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:41:59,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:41:59,804 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:41:59,804 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:41:59,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:41:59,805 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:41:59,805 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:41:59,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:41:59,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:41:59,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:41:59,806 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:41:59,806 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:41:59,807 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:41:59,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:41:59,807 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:41:59,807 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:41:59,807 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;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;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;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;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;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;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;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;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;enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:42:00,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:42:00,275 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:42:00,280 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:42:00,281 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:42:00,282 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:42:00,283 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/tree_del_rec_incorrect.c [2020-09-24 22:42:00,367 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81f789216/e48b1e7f45a44cd29856352d93f6b6b4/FLAGbdfa9be2a [2020-09-24 22:42:00,964 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:42:00,966 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/tree_del_rec_incorrect.c [2020-09-24 22:42:00,977 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81f789216/e48b1e7f45a44cd29856352d93f6b6b4/FLAGbdfa9be2a [2020-09-24 22:42:01,295 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81f789216/e48b1e7f45a44cd29856352d93f6b6b4 [2020-09-24 22:42:01,310 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:42:01,315 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:42:01,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:42:01,317 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:42:01,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:42:01,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:42:01" (1/1) ... [2020-09-24 22:42:01,326 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3950fe1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:01, skipping insertion in model container [2020-09-24 22:42:01,326 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:42:01" (1/1) ... [2020-09-24 22:42:01,334 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:42:01,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:42:01,583 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-24 22:42:01,586 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-24 22:42:01,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:42:01,622 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:42:01,642 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-24 22:42:01,644 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-24 22:42:01,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:42:01,783 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:42:01,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:01 WrapperNode [2020-09-24 22:42:01,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:42:01,784 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:42:01,785 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:42:01,785 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:42:01,799 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:01" (1/1) ... [2020-09-24 22:42:01,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:01" (1/1) ... [2020-09-24 22:42:01,814 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:01" (1/1) ... [2020-09-24 22:42:01,814 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:01" (1/1) ... [2020-09-24 22:42:01,847 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:01" (1/1) ... [2020-09-24 22:42:01,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:01" (1/1) ... [2020-09-24 22:42:01,856 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:01" (1/1) ... [2020-09-24 22:42:01,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:42:01,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:42:01,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:42:01,862 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:42:01,864 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:01" (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 22:42:01,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:42:01,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:42:01,943 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 22:42:01,943 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 22:42:01,943 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2020-09-24 22:42:01,943 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2020-09-24 22:42:01,943 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del [2020-09-24 22:42:01,944 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2020-09-24 22:42:01,944 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2020-09-24 22:42:01,944 INFO L138 BoogieDeclarations]: Found implementation of procedure task [2020-09-24 22:42:01,944 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:42:01,944 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-24 22:42:01,945 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 22:42:01,945 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 22:42:01,945 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 22:42:01,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:42:01,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 22:42:01,951 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 22:42:01,951 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 22:42:01,952 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:42:01,952 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 22:42:01,952 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2020-09-24 22:42:01,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 22:42:01,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 22:42:01,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 22:42:01,953 INFO L130 BoogieDeclarations]: Found specification of procedure min [2020-09-24 22:42:01,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 22:42:01,953 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del [2020-09-24 22:42:01,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 22:42:01,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 22:42:01,954 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2020-09-24 22:42:01,954 INFO L130 BoogieDeclarations]: Found specification of procedure size [2020-09-24 22:42:01,954 INFO L130 BoogieDeclarations]: Found specification of procedure task [2020-09-24 22:42:01,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 22:42:01,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-24 22:42:01,955 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:42:01,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:42:01,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:42:02,535 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:42:02,536 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 22:42:02,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:42:02 BoogieIcfgContainer [2020-09-24 22:42:02,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:42:02,545 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:42:02,546 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:42:02,550 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:42:02,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:42:01" (1/3) ... [2020-09-24 22:42:02,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@94eba10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:42:02, skipping insertion in model container [2020-09-24 22:42:02,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:42:01" (2/3) ... [2020-09-24 22:42:02,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@94eba10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:42:02, skipping insertion in model container [2020-09-24 22:42:02,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:42:02" (3/3) ... [2020-09-24 22:42:02,554 INFO L109 eAbstractionObserver]: Analyzing ICFG tree_del_rec_incorrect.c [2020-09-24 22:42:02,568 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:42:02,580 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:42:02,605 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:42:02,641 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:42:02,642 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:42:02,642 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:42:02,642 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:42:02,642 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:42:02,642 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:42:02,643 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:42:02,643 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:42:02,673 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2020-09-24 22:42:02,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-24 22:42:02,688 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:42:02,689 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 22:42:02,690 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:42:02,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:42:02,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1242734485, now seen corresponding path program 1 times [2020-09-24 22:42:02,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:42:02,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578713465] [2020-09-24 22:42:02,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:42:02,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:02,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:03,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:03,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 22:42:03,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:03,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 662 [2020-09-24 22:42:03,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:03,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:42:03,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 22:42:03,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 22:42:03,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 22:42:03,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:42:03,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:03,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:03,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:03,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:42:03,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:03,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:42:03,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:03,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:03,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:03,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:03,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:03,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 22:42:03,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:03,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:03,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:03,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:42:03,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:03,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:42:03,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:03,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:03,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:03,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:03,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:03,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 22:42:03,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:03,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:03,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:03,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:42:03,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:03,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:42:03,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:03,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:03,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:03,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:03,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:03,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 22:42:03,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:03,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:03,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:03,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:42:03,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:03,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:42:03,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:03,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:42:03,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:03,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:42:03,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:03,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 22:42:03,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:03,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:03,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:03,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:42:03,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:03,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 22:42:03,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:03,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:42:03,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:42:03,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:42:03,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:03,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 22:42:03,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:03,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:03,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:03,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 22:42:03,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:03,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:42:03,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:03,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:03,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 22:42:03,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:03,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:03,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 22:42:03,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:03,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:03,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:03,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 22:42:03,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:03,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:42:03,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:03,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:03,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 22:42:03,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:03,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:03,962 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 22:42:03,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [578713465] [2020-09-24 22:42:03,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:42:03,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 22:42:03,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244599155] [2020-09-24 22:42:03,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 22:42:03,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:42:03,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 22:42:03,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:42:03,993 INFO L87 Difference]: Start difference. First operand 183 states. Second operand 11 states. [2020-09-24 22:42:05,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:42:05,304 INFO L93 Difference]: Finished difference Result 324 states and 379 transitions. [2020-09-24 22:42:05,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 22:42:05,308 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-09-24 22:42:05,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:42:05,327 INFO L225 Difference]: With dead ends: 324 [2020-09-24 22:42:05,327 INFO L226 Difference]: Without dead ends: 188 [2020-09-24 22:42:05,334 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 22:42:05,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-09-24 22:42:05,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 175. [2020-09-24 22:42:05,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-09-24 22:42:05,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 198 transitions. [2020-09-24 22:42:05,424 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 198 transitions. Word has length 60 [2020-09-24 22:42:05,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:42:05,425 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 198 transitions. [2020-09-24 22:42:05,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 22:42:05,425 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 198 transitions. [2020-09-24 22:42:05,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-24 22:42:05,430 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:42:05,431 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 22:42:05,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:42:05,432 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:42:05,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:42:05,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1686429873, now seen corresponding path program 1 times [2020-09-24 22:42:05,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:42:05,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395626878] [2020-09-24 22:42:05,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:42:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:05,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:05,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:05,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:09,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:09,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-24 22:42:09,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:42:09,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4320 [2020-09-24 22:42:09,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:09,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:42:09,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-24 22:42:09,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 22:42:09,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:42:09,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:42:09,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:09,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:09,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:09,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:42:09,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:09,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:42:09,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:09,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:09,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:09,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:09,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:09,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 22:42:09,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:09,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:09,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:09,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:42:09,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:09,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 22:42:09,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:09,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:09,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:09,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:09,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:09,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 22:42:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:09,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:09,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:09,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:42:09,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:09,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:42:09,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:09,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:09,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:09,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:09,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:09,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 22:42:09,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:09,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:09,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:09,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 22:42:09,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:09,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-24 22:42:09,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:09,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:42:09,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:09,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 22:42:09,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:10,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:42:10,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:10,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:10,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:10,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:42:10,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:10,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:42:10,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:10,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:42:10,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:10,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:42:10,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:10,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:42:10,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:10,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:10,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:10,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:42:10,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:10,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:42:10,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:10,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:42:10,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:10,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:42:10,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:10,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-24 22:42:10,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:10,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:10,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:10,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:42:10,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:10,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 22:42:10,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:10,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:42:10,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:10,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:42:10,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:10,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-24 22:42:10,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:10,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:10,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:10,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 22:42:10,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:10,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:42:10,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:10,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:42:10,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:10,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 22:42:10,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:10,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-24 22:42:10,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:10,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:10,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:10,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 22:42:10,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:10,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 22:42:10,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:10,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:42:10,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:42:10,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:42:10,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:10,476 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 22:42:10,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395626878] [2020-09-24 22:42:10,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:42:10,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 22:42:10,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332607982] [2020-09-24 22:42:10,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 22:42:10,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:42:10,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 22:42:10,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:42:10,483 INFO L87 Difference]: Start difference. First operand 175 states and 198 transitions. Second operand 11 states. [2020-09-24 22:42:11,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:42:11,861 INFO L93 Difference]: Finished difference Result 302 states and 343 transitions. [2020-09-24 22:42:11,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 22:42:11,862 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 80 [2020-09-24 22:42:11,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:42:11,865 INFO L225 Difference]: With dead ends: 302 [2020-09-24 22:42:11,866 INFO L226 Difference]: Without dead ends: 193 [2020-09-24 22:42:11,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2020-09-24 22:42:11,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-09-24 22:42:11,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 182. [2020-09-24 22:42:11,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-09-24 22:42:11,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 206 transitions. [2020-09-24 22:42:11,889 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 206 transitions. Word has length 80 [2020-09-24 22:42:11,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:42:11,890 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 206 transitions. [2020-09-24 22:42:11,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 22:42:11,890 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 206 transitions. [2020-09-24 22:42:11,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-24 22:42:11,895 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:42:11,896 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2020-09-24 22:42:11,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:42:11,896 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:42:11,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:42:11,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1483717926, now seen corresponding path program 1 times [2020-09-24 22:42:11,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:42:11,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243331688] [2020-09-24 22:42:11,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:42:11,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:11,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:11,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:12,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:13,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:16,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:16,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-24 22:42:16,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:42:16,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-24 22:42:16,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:16,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:42:16,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-24 22:42:16,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-24 22:42:16,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:17,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:42:17,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:17,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:17,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:17,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:42:17,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:17,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:42:17,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:17,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:17,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:17,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:17,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:17,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 22:42:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:17,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:17,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:17,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:42:17,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:17,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:42:17,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:17,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:17,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:17,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:17,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:42:17,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 22:42:17,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:17,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:17,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:17,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:42:17,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:17,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 22:42:17,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:17,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:42:17,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:17,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:42:17,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:17,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 22:42:17,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:17,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:17,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:17,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:17,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 22:42:17,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:42:17,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-24 22:42:17,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:17,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:42:17,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:42:17,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 22:42:17,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:17,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:42:17,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:17,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:17,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:17,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:42:17,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:17,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:42:17,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:17,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:42:17,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:17,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:42:17,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:17,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:42:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:17,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:17,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:17,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:42:17,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:17,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:42:17,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:17,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:42:17,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:17,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:42:17,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:17,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-24 22:42:17,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:17,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:17,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:17,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:42:17,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:17,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:42:17,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:17,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:42:17,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:17,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:42:17,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:17,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-24 22:42:17,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:17,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:17,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:17,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 22:42:17,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:17,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:42:17,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:17,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:42:17,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:17,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 22:42:17,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:17,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-24 22:42:17,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:17,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:17,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:17,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 22:42:17,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:17,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-24 22:42:17,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:17,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:42:17,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:42:17,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-24 22:42:17,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:17,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:42:17,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:17,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:17,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:17,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 22:42:17,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:17,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:42:17,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:17,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:42:17,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:17,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:42:17,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:17,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 22:42:17,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:17,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:17,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:17,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 22:42:17,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:17,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:42:17,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:17,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:42:17,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:17,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:42:17,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:17,734 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-24 22:42:17,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [243331688] [2020-09-24 22:42:17,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:42:17,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 22:42:17,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282477238] [2020-09-24 22:42:17,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 22:42:17,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:42:17,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 22:42:17,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-09-24 22:42:17,738 INFO L87 Difference]: Start difference. First operand 182 states and 206 transitions. Second operand 13 states. [2020-09-24 22:42:18,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:42:18,999 INFO L93 Difference]: Finished difference Result 328 states and 373 transitions. [2020-09-24 22:42:19,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 22:42:19,000 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 112 [2020-09-24 22:42:19,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:42:19,005 INFO L225 Difference]: With dead ends: 328 [2020-09-24 22:42:19,005 INFO L226 Difference]: Without dead ends: 195 [2020-09-24 22:42:19,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2020-09-24 22:42:19,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-09-24 22:42:19,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 184. [2020-09-24 22:42:19,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-09-24 22:42:19,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 209 transitions. [2020-09-24 22:42:19,050 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 209 transitions. Word has length 112 [2020-09-24 22:42:19,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:42:19,050 INFO L479 AbstractCegarLoop]: Abstraction has 184 states and 209 transitions. [2020-09-24 22:42:19,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 22:42:19,051 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 209 transitions. [2020-09-24 22:42:19,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-24 22:42:19,058 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:42:19,059 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:19,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:42:19,059 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:42:19,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:42:19,059 INFO L82 PathProgramCache]: Analyzing trace with hash -325484028, now seen corresponding path program 1 times [2020-09-24 22:42:19,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:42:19,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253204823] [2020-09-24 22:42:19,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:42:19,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:19,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:19,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:19,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:24,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:24,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-24 22:42:24,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:42:24,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-24 22:42:24,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:24,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:42:24,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:42:24,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-24 22:42:24,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:24,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:42:24,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:24,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:24,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:24,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:42:24,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:24,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:42:24,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:24,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:42:24,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:24,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:42:24,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:24,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 22:42:24,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:24,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:24,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:24,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:42:24,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:24,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 22:42:24,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:24,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:42:24,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:24,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:42:24,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:24,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 22:42:24,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:24,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:24,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:24,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:24,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 22:42:24,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:42:24,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-24 22:42:24,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:24,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:42:24,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:42:24,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 22:42:24,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:24,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:42:24,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:24,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:24,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:24,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:42:24,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:24,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 22:42:24,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:24,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:42:24,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:24,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:42:24,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:24,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 22:42:24,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:24,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:24,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:24,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:42:24,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:24,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 22:42:24,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:24,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:42:24,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:24,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:42:24,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:24,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-24 22:42:24,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:24,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:24,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:24,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:24,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 22:42:24,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:42:24,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-24 22:42:24,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:24,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:42:24,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:42:24,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 22:42:24,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:42:24,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:42:24,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:24,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:24,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:24,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:42:24,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:24,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:42:24,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:24,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:42:24,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:24,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:42:24,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:24,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:42:24,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:24,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:24,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:24,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:42:24,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:24,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:42:24,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:24,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:42:24,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:24,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:42:24,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:24,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-09-24 22:42:24,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:24,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:24,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:24,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:42:24,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:24,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:42:24,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:24,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:42:24,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:24,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:42:24,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:24,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 22:42:24,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:24,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:24,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:24,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 22:42:24,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:24,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:42:24,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:24,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:42:24,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:24,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 22:42:24,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:24,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-24 22:42:24,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:24,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:24,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:24,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 22:42:24,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:24,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-24 22:42:24,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:24,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:42:24,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:42:24,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-24 22:42:24,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:25,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:42:25,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:25,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:25,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:25,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 22:42:25,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:25,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:42:25,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:25,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:42:25,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:25,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:42:25,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:25,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 22:42:25,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:42:25,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:42:25,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:42:25,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 22:42:25,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:42:25,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:42:25,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:42:25,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:42:25,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:42:25,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:42:25,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:42:25,127 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-09-24 22:42:25,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253204823] [2020-09-24 22:42:25,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:42:25,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 22:42:25,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313702180] [2020-09-24 22:42:25,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 22:42:25,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:42:25,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 22:42:25,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-09-24 22:42:25,133 INFO L87 Difference]: Start difference. First operand 184 states and 209 transitions. Second operand 16 states. [2020-09-24 22:42:26,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:42:26,904 INFO L93 Difference]: Finished difference Result 330 states and 375 transitions. [2020-09-24 22:42:26,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 22:42:26,905 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 135 [2020-09-24 22:42:26,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:42:26,909 INFO L225 Difference]: With dead ends: 330 [2020-09-24 22:42:26,909 INFO L226 Difference]: Without dead ends: 194 [2020-09-24 22:42:26,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756 [2020-09-24 22:42:26,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-09-24 22:42:26,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 186. [2020-09-24 22:42:26,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-09-24 22:42:26,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 212 transitions. [2020-09-24 22:42:26,941 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 212 transitions. Word has length 135 [2020-09-24 22:42:26,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:42:26,941 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 212 transitions. [2020-09-24 22:42:26,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 22:42:26,941 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 212 transitions. [2020-09-24 22:42:26,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-24 22:42:26,943 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:42:26,944 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] [2020-09-24 22:42:26,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:42:26,944 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:42:26,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:42:26,945 INFO L82 PathProgramCache]: Analyzing trace with hash -435645933, now seen corresponding path program 1 times [2020-09-24 22:42:26,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:42:26,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890453042] [2020-09-24 22:42:26,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:42:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 22:42:26,994 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 22:42:26,994 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 22:42:27,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 22:42:27,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 10:42:27 BoogieIcfgContainer [2020-09-24 22:42:27,027 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 22:42:27,031 INFO L168 Benchmark]: Toolchain (without parser) took 25718.18 ms. Allocated memory was 147.8 MB in the beginning and 399.0 MB in the end (delta: 251.1 MB). Free memory was 103.1 MB in the beginning and 181.3 MB in the end (delta: -78.2 MB). Peak memory consumption was 172.9 MB. Max. memory is 7.1 GB. [2020-09-24 22:42:27,032 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 22:42:27,033 INFO L168 Benchmark]: CACSL2BoogieTranslator took 467.80 ms. Allocated memory was 147.8 MB in the beginning and 205.5 MB in the end (delta: 57.7 MB). Free memory was 102.5 MB in the beginning and 184.0 MB in the end (delta: -81.5 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-09-24 22:42:27,033 INFO L168 Benchmark]: Boogie Preprocessor took 77.25 ms. Allocated memory is still 205.5 MB. Free memory was 184.0 MB in the beginning and 181.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-09-24 22:42:27,034 INFO L168 Benchmark]: RCFGBuilder took 681.76 ms. Allocated memory is still 205.5 MB. Free memory was 181.0 MB in the beginning and 140.8 MB in the end (delta: 40.2 MB). Peak memory consumption was 40.2 MB. Max. memory is 7.1 GB. [2020-09-24 22:42:27,035 INFO L168 Benchmark]: TraceAbstraction took 24482.19 ms. Allocated memory was 205.5 MB in the beginning and 399.0 MB in the end (delta: 193.5 MB). Free memory was 140.1 MB in the beginning and 181.3 MB in the end (delta: -41.2 MB). Peak memory consumption was 152.2 MB. Max. memory is 7.1 GB. [2020-09-24 22:42:27,039 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 467.80 ms. Allocated memory was 147.8 MB in the beginning and 205.5 MB in the end (delta: 57.7 MB). Free memory was 102.5 MB in the beginning and 184.0 MB in the end (delta: -81.5 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 77.25 ms. Allocated memory is still 205.5 MB. Free memory was 184.0 MB in the beginning and 181.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 681.76 ms. Allocated memory is still 205.5 MB. Free memory was 181.0 MB in the beginning and 140.8 MB in the end (delta: 40.2 MB). Peak memory consumption was 40.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 24482.19 ms. Allocated memory was 205.5 MB in the beginning and 399.0 MB in the end (delta: 193.5 MB). Free memory was 140.1 MB in the beginning and 181.3 MB in the end (delta: -41.2 MB). Peak memory consumption was 152.2 MB. 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: [L96] 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; [L96] RET, EXPR nondet_tree() [L96] CALL task(nondet_tree()) [L74] CALL, EXPR min(t) [L35] COND FALSE !(!n) [L38] EXPR n->left [L38] CALL, EXPR min(n->left) [L35] COND TRUE !n [L36] return 2147483647; [L38] RET, EXPR min(n->left) [L38] int a = min(n->left); [L39] EXPR n->right [L39] CALL, EXPR min(n->right) [L35] COND TRUE !n [L36] return 2147483647; [L39] RET, EXPR min(n->right) [L39] int b = min(n->right); [L40] COND TRUE a <= b [L40] return a; [L74] RET, EXPR min(t) [L74] int a = min(t); [L75] int b; [L77] CALL, EXPR size(t) [L69] COND FALSE !(!t) [L70] EXPR t->left [L70] CALL, EXPR size(t->left) [L69] COND TRUE !t [L69] return 0; [L70] RET, EXPR size(t->left) [L70] EXPR t->right [L70] CALL, EXPR size(t->right) [L69] COND TRUE !t [L69] return 0; [L70] RET, EXPR size(t->right) [L70] return size(t->left) + size(t->right) + 1; [L77] RET, EXPR size(t) [L77] int n = size(t); [L78] CALL assume_abort_if_not(n != 0) [L10] COND FALSE !(!cond) [L78] RET assume_abort_if_not(n != 0) [L79] EXPR, FCALL calloc(n, sizeof(int)) [L79] int *x = calloc(n, sizeof(int)); [L80] CALL tree_inorder(t, x, n) [L58] COND FALSE !(!t) [L61] EXPR t->left [L61] CALL, EXPR tree_inorder(t->left, a, i) [L58] COND TRUE !t [L59] return i; [L61] RET, EXPR tree_inorder(t->left, a, i) [L61] i = tree_inorder(t->left, a, i) [L62] EXPR i++ [L62] EXPR t->data [L62] a[i++] = t->data [L63] EXPR t->right [L63] CALL, EXPR tree_inorder(t->right, a, i) [L58] COND TRUE !t [L59] return i; [L63] RET, EXPR tree_inorder(t->right, a, i) [L63] i = tree_inorder(t->right, a, i) [L64] return i; [L80] RET tree_inorder(t, x, n) [L81] EXPR x[0] [L81] CALL __VERIFIER_assert(a == x[0]) [L14] COND TRUE !cond [L14] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 183 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 24.3s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 653 SDtfs, 1373 SDslu, 2110 SDs, 0 SdLazy, 3588 SolverSat, 544 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 153 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=186occurred in iteration=4, 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, 43 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 17.7s InterpolantComputationTime, 543 NumberOfCodeBlocks, 543 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 383 ConstructedInterpolants, 0 QuantifiedInterpolants, 274989 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 70/90 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...