/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 SequenceOfStatements --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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/tree_del_iter_incorrect.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 05:00:26,778 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 05:00:26,780 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 05:00:26,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 05:00:26,805 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 05:00:26,806 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 05:00:26,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 05:00:26,809 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 05:00:26,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 05:00:26,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 05:00:26,812 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 05:00:26,813 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 05:00:26,814 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 05:00:26,815 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 05:00:26,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 05:00:26,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 05:00:26,818 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 05:00:26,818 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 05:00:26,820 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 05:00:26,822 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 05:00:26,824 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 05:00:26,825 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 05:00:26,827 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 05:00:26,827 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 05:00:26,831 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 05:00:26,831 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 05:00:26,831 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 05:00:26,832 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 05:00:26,833 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 05:00:26,834 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 05:00:26,834 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 05:00:26,835 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 05:00:26,838 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 05:00:26,839 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 05:00:26,840 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 05:00:26,840 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 05:00:26,841 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 05:00:26,841 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 05:00:26,841 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 05:00:26,842 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 05:00:26,843 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 05:00:26,844 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 [2020-10-15 05:00:26,867 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 05:00:26,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 05:00:26,868 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 05:00:26,868 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 05:00:26,868 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 05:00:26,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 05:00:26,869 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 05:00:26,869 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 05:00:26,869 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 05:00:26,869 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 05:00:26,870 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 05:00:26,870 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 05:00:26,870 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 05:00:26,870 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 05:00:26,870 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 05:00:26,870 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 05:00:26,871 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 05:00:26,871 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 05:00:26,871 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 05:00:26,871 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 05:00:26,871 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 05:00:26,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 05:00:26,872 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 05:00:26,872 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 05:00:26,872 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 05:00:26,872 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 05:00:26,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 05:00:26,873 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 05:00:26,873 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 05:00:26,873 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 -> SequenceOfStatements 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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 05:00:27,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 05:00:27,196 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 05:00:27,199 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 05:00:27,201 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 05:00:27,201 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 05:00:27,202 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/tree_del_iter_incorrect.c [2020-10-15 05:00:27,261 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc9bdfd25/2225c8735c14494aa129b145ffc9cb0c/FLAGabf4a3c6b [2020-10-15 05:00:27,724 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 05:00:27,726 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/tree_del_iter_incorrect.c [2020-10-15 05:00:27,735 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc9bdfd25/2225c8735c14494aa129b145ffc9cb0c/FLAGabf4a3c6b [2020-10-15 05:00:28,085 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc9bdfd25/2225c8735c14494aa129b145ffc9cb0c [2020-10-15 05:00:28,093 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 05:00:28,095 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 05:00:28,096 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 05:00:28,096 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 05:00:28,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 05:00:28,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:00:28" (1/1) ... [2020-10-15 05:00:28,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16661b81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:00:28, skipping insertion in model container [2020-10-15 05:00:28,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:00:28" (1/1) ... [2020-10-15 05:00:28,112 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 05:00:28,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 05:00:28,317 WARN L1484 CHandler]: Possible shadowing of function min [2020-10-15 05:00:28,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 05:00:28,372 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 05:00:28,566 WARN L1484 CHandler]: Possible shadowing of function min [2020-10-15 05:00:28,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 05:00:28,609 INFO L208 MainTranslator]: Completed translation [2020-10-15 05:00:28,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:00:28 WrapperNode [2020-10-15 05:00:28,610 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 05:00:28,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 05:00:28,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 05:00:28,611 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 05:00:28,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:00:28" (1/1) ... [2020-10-15 05:00:28,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:00:28" (1/1) ... [2020-10-15 05:00:28,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:00:28" (1/1) ... [2020-10-15 05:00:28,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:00:28" (1/1) ... [2020-10-15 05:00:28,652 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:00:28" (1/1) ... [2020-10-15 05:00:28,659 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:00:28" (1/1) ... [2020-10-15 05:00:28,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:00:28" (1/1) ... [2020-10-15 05:00:28,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 05:00:28,667 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 05:00:28,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 05:00:28,668 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 05:00:28,669 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:00:28" (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 [2020-10-15 05:00:28,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 05:00:28,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 05:00:28,731 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 05:00:28,731 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-15 05:00:28,731 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2020-10-15 05:00:28,732 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2020-10-15 05:00:28,732 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del [2020-10-15 05:00:28,732 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2020-10-15 05:00:28,732 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2020-10-15 05:00:28,732 INFO L138 BoogieDeclarations]: Found implementation of procedure task [2020-10-15 05:00:28,732 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 05:00:28,733 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-10-15 05:00:28,733 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-15 05:00:28,733 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-15 05:00:28,733 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-15 05:00:28,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 05:00:28,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 05:00:28,734 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 05:00:28,734 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 05:00:28,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 05:00:28,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-15 05:00:28,734 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2020-10-15 05:00:28,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-15 05:00:28,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 05:00:28,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-15 05:00:28,735 INFO L130 BoogieDeclarations]: Found specification of procedure min [2020-10-15 05:00:28,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-15 05:00:28,735 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del [2020-10-15 05:00:28,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 05:00:28,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 05:00:28,736 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2020-10-15 05:00:28,736 INFO L130 BoogieDeclarations]: Found specification of procedure size [2020-10-15 05:00:28,736 INFO L130 BoogieDeclarations]: Found specification of procedure task [2020-10-15 05:00:28,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 05:00:28,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-10-15 05:00:28,737 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 05:00:28,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 05:00:28,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 05:00:29,278 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 05:00:29,278 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-15 05:00:29,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:00:29 BoogieIcfgContainer [2020-10-15 05:00:29,284 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 05:00:29,286 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 05:00:29,286 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 05:00:29,289 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 05:00:29,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 05:00:28" (1/3) ... [2020-10-15 05:00:29,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a01d4e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:00:29, skipping insertion in model container [2020-10-15 05:00:29,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:00:28" (2/3) ... [2020-10-15 05:00:29,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a01d4e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:00:29, skipping insertion in model container [2020-10-15 05:00:29,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:00:29" (3/3) ... [2020-10-15 05:00:29,293 INFO L109 eAbstractionObserver]: Analyzing ICFG tree_del_iter_incorrect.c [2020-10-15 05:00:29,304 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 05:00:29,311 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 05:00:29,322 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 05:00:29,343 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 05:00:29,343 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 05:00:29,344 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 05:00:29,344 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 05:00:29,344 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 05:00:29,344 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 05:00:29,344 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 05:00:29,345 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 05:00:29,367 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states. [2020-10-15 05:00:29,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-15 05:00:29,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 05:00:29,378 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] [2020-10-15 05:00:29,379 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 05:00:29,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 05:00:29,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1213743031, now seen corresponding path program 1 times [2020-10-15 05:00:29,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 05:00:29,394 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560758899] [2020-10-15 05:00:29,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 05:00:29,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:29,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:29,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:29,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-15 05:00:29,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:29,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-15 05:00:29,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:29,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:29,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:29,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-15 05:00:29,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:29,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 05:00:29,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 05:00:29,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:29,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:29,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:29,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:00:29,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:29,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 05:00:29,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:29,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:29,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:29,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:29,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:29,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 05:00:29,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-15 05:00:29,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:29,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:29,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:29,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:00:29,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:29,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 05:00:29,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:29,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:29,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:29,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:29,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:29,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:29,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-15 05:00:29,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:29,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:29,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:29,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:29,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:29,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 05:00:29,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:29,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:29,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:29,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:29,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:29,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:29,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-15 05:00:29,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:29,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:29,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:29,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:29,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:29,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 05:00:29,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:29,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:29,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:29,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:29,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:29,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:29,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-15 05:00:29,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:29,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:29,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:29,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:29,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:29,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 05:00:29,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:29,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:29,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:29,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-15 05:00:29,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:29,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:29,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-15 05:00:29,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:29,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:29,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:29,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:00:29,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:29,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 05:00:29,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:29,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:29,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:29,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 05:00:29,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:29,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:29,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-15 05:00:29,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:29,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:29,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:29,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:29,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:29,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 05:00:29,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:29,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:29,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:30,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 05:00:30,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:30,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:30,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 05:00:30,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560758899] [2020-10-15 05:00:30,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 05:00:30,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 05:00:30,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146111126] [2020-10-15 05:00:30,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 05:00:30,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 05:00:30,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 05:00:30,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 05:00:30,078 INFO L87 Difference]: Start difference. First operand 96 states. Second operand 6 states. [2020-10-15 05:00:30,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 05:00:30,512 INFO L93 Difference]: Finished difference Result 168 states and 221 transitions. [2020-10-15 05:00:30,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 05:00:30,514 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-10-15 05:00:30,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 05:00:30,528 INFO L225 Difference]: With dead ends: 168 [2020-10-15 05:00:30,528 INFO L226 Difference]: Without dead ends: 95 [2020-10-15 05:00:30,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 05:00:30,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-15 05:00:30,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 88. [2020-10-15 05:00:30,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-15 05:00:30,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 109 transitions. [2020-10-15 05:00:30,595 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 109 transitions. Word has length 44 [2020-10-15 05:00:30,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 05:00:30,596 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 109 transitions. [2020-10-15 05:00:30,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 05:00:30,597 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 109 transitions. [2020-10-15 05:00:30,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-15 05:00:30,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 05:00:30,600 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] [2020-10-15 05:00:30,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 05:00:30,601 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 05:00:30,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 05:00:30,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1392280523, now seen corresponding path program 1 times [2020-10-15 05:00:30,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 05:00:30,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874919836] [2020-10-15 05:00:30,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 05:00:30,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:30,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:30,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:30,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-15 05:00:30,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:30,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-15 05:00:30,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:30,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:30,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 05:00:30,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-15 05:00:30,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 05:00:30,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:30,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 05:00:30,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:30,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:30,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:30,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:00:30,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:30,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 05:00:30,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:30,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:30,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:30,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:30,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:30,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:31,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-15 05:00:31,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:31,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:31,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:31,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:00:31,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:31,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 05:00:31,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:31,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:31,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:31,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:31,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:31,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:31,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-15 05:00:31,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:31,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:31,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:31,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:31,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:31,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 05:00:31,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:31,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:31,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:31,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:31,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:31,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:31,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-15 05:00:31,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:31,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:31,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:31,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:31,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:31,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 05:00:31,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:31,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:31,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 05:00:31,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:31,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 05:00:31,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:31,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-15 05:00:31,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:31,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:31,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:31,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:31,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:31,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 05:00:31,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:31,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:31,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 05:00:31,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 05:00:31,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 05:00:31,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:31,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-15 05:00:31,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:31,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:31,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:31,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:00:31,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:31,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 05:00:31,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:31,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:31,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:31,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 05:00:31,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:31,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:31,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-15 05:00:31,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:31,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:31,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:31,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:31,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:31,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 05:00:31,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:31,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:31,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:31,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 05:00:31,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:31,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:31,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 05:00:31,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874919836] [2020-10-15 05:00:31,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 05:00:31,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 05:00:31,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863944051] [2020-10-15 05:00:31,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 05:00:31,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 05:00:31,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 05:00:31,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-15 05:00:31,200 INFO L87 Difference]: Start difference. First operand 88 states and 109 transitions. Second operand 11 states. [2020-10-15 05:00:31,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 05:00:31,879 INFO L93 Difference]: Finished difference Result 154 states and 197 transitions. [2020-10-15 05:00:31,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 05:00:31,880 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 44 [2020-10-15 05:00:31,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 05:00:31,883 INFO L225 Difference]: With dead ends: 154 [2020-10-15 05:00:31,883 INFO L226 Difference]: Without dead ends: 97 [2020-10-15 05:00:31,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-15 05:00:31,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-15 05:00:31,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 90. [2020-10-15 05:00:31,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-15 05:00:31,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 113 transitions. [2020-10-15 05:00:31,902 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 113 transitions. Word has length 44 [2020-10-15 05:00:31,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 05:00:31,903 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 113 transitions. [2020-10-15 05:00:31,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 05:00:31,903 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 113 transitions. [2020-10-15 05:00:31,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-15 05:00:31,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 05:00:31,906 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-15 05:00:31,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 05:00:31,906 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 05:00:31,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 05:00:31,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1672920772, now seen corresponding path program 1 times [2020-10-15 05:00:31,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 05:00:31,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087015892] [2020-10-15 05:00:31,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 05:00:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:31,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:31,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:32,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:35,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:35,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 05:00:35,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 05:00:35,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3114 [2020-10-15 05:00:35,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:35,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:35,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 05:00:35,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-15 05:00:35,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 05:00:35,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 05:00:35,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 05:00:35,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:35,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:35,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:35,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:00:35,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:35,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 05:00:35,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:35,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:35,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:35,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:35,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:35,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:35,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-15 05:00:35,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:35,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:35,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:35,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:00:35,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:35,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 05:00:35,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:35,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:35,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:35,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:35,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:35,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:35,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-15 05:00:35,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:35,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:35,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:35,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:35,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:35,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 05:00:35,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:35,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:35,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:35,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:35,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:35,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 05:00:35,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-15 05:00:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:35,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:35,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:35,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 05:00:35,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:35,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-15 05:00:35,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:35,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:35,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 05:00:35,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:35,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 05:00:35,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:35,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 05:00:35,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:35,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:35,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:35,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:35,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:35,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 05:00:35,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:35,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:35,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:00:35,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:35,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 05:00:35,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 05:00:35,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-15 05:00:35,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:35,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:35,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:35,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:35,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:35,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 05:00:35,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:35,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:35,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:00:35,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:35,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 05:00:35,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 05:00:35,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-15 05:00:35,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:35,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:35,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:35,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:35,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:35,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 05:00:35,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:35,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:35,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:00:35,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:35,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 05:00:35,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 05:00:35,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-15 05:00:35,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:35,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:35,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:35,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:00:35,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:35,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 05:00:35,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:35,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:35,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:00:35,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:35,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 05:00:35,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:00:35,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-15 05:00:35,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:35,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:35,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:35,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:35,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:35,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 05:00:35,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:35,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:35,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 05:00:35,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 05:00:35,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 05:00:35,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:35,423 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 05:00:35,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087015892] [2020-10-15 05:00:35,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 05:00:35,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 05:00:35,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33736305] [2020-10-15 05:00:35,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 05:00:35,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 05:00:35,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 05:00:35,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-15 05:00:35,429 INFO L87 Difference]: Start difference. First operand 90 states and 113 transitions. Second operand 11 states. [2020-10-15 05:00:36,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 05:00:36,210 INFO L93 Difference]: Finished difference Result 154 states and 195 transitions. [2020-10-15 05:00:36,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 05:00:36,210 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 56 [2020-10-15 05:00:36,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 05:00:36,213 INFO L225 Difference]: With dead ends: 154 [2020-10-15 05:00:36,213 INFO L226 Difference]: Without dead ends: 101 [2020-10-15 05:00:36,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-10-15 05:00:36,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-15 05:00:36,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 96. [2020-10-15 05:00:36,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-15 05:00:36,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 121 transitions. [2020-10-15 05:00:36,245 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 121 transitions. Word has length 56 [2020-10-15 05:00:36,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 05:00:36,246 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 121 transitions. [2020-10-15 05:00:36,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 05:00:36,247 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 121 transitions. [2020-10-15 05:00:36,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 05:00:36,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 05:00:36,254 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 05:00:36,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 05:00:36,255 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 05:00:36,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 05:00:36,255 INFO L82 PathProgramCache]: Analyzing trace with hash -131387473, now seen corresponding path program 1 times [2020-10-15 05:00:36,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 05:00:36,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877667357] [2020-10-15 05:00:36,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 05:00:36,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:36,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:36,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:36,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:36,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:38,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:38,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-15 05:00:38,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 05:00:38,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2073 [2020-10-15 05:00:38,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:38,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:38,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 05:00:38,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-15 05:00:38,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-15 05:00:38,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:38,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 05:00:38,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:38,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:38,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:38,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:00:38,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:38,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 05:00:38,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:38,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:38,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:38,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:38,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:38,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:38,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-15 05:00:38,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:38,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:38,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:38,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:00:38,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:38,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 05:00:38,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:38,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:38,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:38,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:38,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:38,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:38,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-15 05:00:38,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:38,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:38,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:38,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:38,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:38,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 05:00:38,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:38,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:38,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 05:00:38,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:38,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 05:00:38,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:38,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-15 05:00:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:38,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:38,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:38,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:38,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 05:00:38,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 05:00:38,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-15 05:00:38,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:38,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:38,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:00:38,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:38,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 05:00:38,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:00:38,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 05:00:38,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:38,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:38,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:38,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:38,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:38,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 05:00:38,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:38,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:38,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:38,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:38,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:38,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:00:38,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-15 05:00:38,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:38,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:38,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:38,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:38,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:38,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 05:00:38,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:38,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:38,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:38,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:38,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:38,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:00:38,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-15 05:00:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:38,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:38,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:38,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:38,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:38,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 05:00:38,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:38,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:38,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:00:38,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:38,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 05:00:38,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:00:38,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-15 05:00:38,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:38,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:38,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:38,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:00:38,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:38,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 05:00:38,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:38,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:38,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:00:38,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:38,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 05:00:38,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:38,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-15 05:00:38,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:38,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:38,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:38,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 05:00:38,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:38,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-15 05:00:38,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:38,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:38,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 05:00:38,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 05:00:38,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 05:00:38,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:38,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 05:00:38,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:38,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:38,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:38,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:38,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:38,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 05:00:38,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:38,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:38,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:00:38,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:38,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 05:00:38,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:38,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-15 05:00:38,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:38,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:38,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:38,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:38,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:38,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 05:00:38,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:38,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:38,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:00:38,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:38,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 05:00:38,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:38,729 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-15 05:00:38,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877667357] [2020-10-15 05:00:38,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 05:00:38,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 05:00:38,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026238581] [2020-10-15 05:00:38,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 05:00:38,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 05:00:38,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 05:00:38,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-15 05:00:38,733 INFO L87 Difference]: Start difference. First operand 96 states and 121 transitions. Second operand 11 states. [2020-10-15 05:00:39,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 05:00:39,661 INFO L93 Difference]: Finished difference Result 170 states and 218 transitions. [2020-10-15 05:00:39,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 05:00:39,661 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 68 [2020-10-15 05:00:39,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 05:00:39,666 INFO L225 Difference]: With dead ends: 170 [2020-10-15 05:00:39,668 INFO L226 Difference]: Without dead ends: 103 [2020-10-15 05:00:39,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-10-15 05:00:39,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-15 05:00:39,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 98. [2020-10-15 05:00:39,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-15 05:00:39,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 124 transitions. [2020-10-15 05:00:39,693 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 124 transitions. Word has length 68 [2020-10-15 05:00:39,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 05:00:39,693 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 124 transitions. [2020-10-15 05:00:39,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 05:00:39,694 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 124 transitions. [2020-10-15 05:00:39,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-15 05:00:39,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 05:00:39,695 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 05:00:39,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 05:00:39,696 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 05:00:39,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 05:00:39,696 INFO L82 PathProgramCache]: Analyzing trace with hash 65944627, now seen corresponding path program 1 times [2020-10-15 05:00:39,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 05:00:39,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070178951] [2020-10-15 05:00:39,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 05:00:39,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:39,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:39,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:39,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:42,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:42,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-15 05:00:42,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 05:00:42,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3117 [2020-10-15 05:00:42,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:42,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:42,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 05:00:42,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 05:00:42,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-15 05:00:42,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:42,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 05:00:42,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:42,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:42,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:42,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:00:42,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:42,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 05:00:42,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:42,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:42,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:42,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:42,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:42,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:43,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-15 05:00:43,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:43,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:43,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:43,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:00:43,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:43,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-15 05:00:43,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:43,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:43,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 05:00:43,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:43,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 05:00:43,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:00:43,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-15 05:00:43,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:43,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:43,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:43,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:43,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 05:00:43,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 05:00:43,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-15 05:00:43,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:43,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:43,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:00:43,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:43,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 05:00:43,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:43,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 05:00:43,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:43,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:43,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:43,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:43,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:43,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 05:00:43,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:43,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:43,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:43,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:43,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:43,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:43,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-15 05:00:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:43,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:43,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:43,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:43,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:43,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 05:00:43,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:43,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:43,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:43,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:43,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:43,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 05:00:43,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-15 05:00:43,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:43,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:43,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:43,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:43,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 05:00:43,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 05:00:43,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-15 05:00:43,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:43,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:43,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:00:43,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:43,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 05:00:43,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:43,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 05:00:43,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:43,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:43,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:43,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:43,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:43,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 05:00:43,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:43,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:43,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:43,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:43,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:43,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:43,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-15 05:00:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:43,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:43,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:43,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:43,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:43,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 05:00:43,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:43,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:43,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 05:00:43,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:43,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 05:00:43,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:43,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-15 05:00:43,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:43,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:43,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:43,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:43,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:43,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 05:00:43,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:43,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:43,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:00:43,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:43,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 05:00:43,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:43,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-15 05:00:43,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:43,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:43,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:43,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 05:00:43,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:43,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 05:00:43,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:43,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:43,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:00:43,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:43,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 05:00:43,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:43,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-15 05:00:43,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:43,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:43,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:43,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 05:00:43,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:43,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-15 05:00:43,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:43,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:43,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 05:00:43,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 05:00:43,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 05:00:43,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:43,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 05:00:43,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:43,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:43,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:43,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:43,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:43,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 05:00:43,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:43,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:43,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:00:43,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:43,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 05:00:43,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:43,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-15 05:00:43,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 05:00:43,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 05:00:43,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 05:00:43,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 05:00:43,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 05:00:43,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 05:00:43,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 05:00:43,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 05:00:43,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 05:00:43,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 05:00:43,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 05:00:43,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 05:00:43,358 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-15 05:00:43,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070178951] [2020-10-15 05:00:43,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 05:00:43,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-15 05:00:43,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139198114] [2020-10-15 05:00:43,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 05:00:43,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 05:00:43,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 05:00:43,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-15 05:00:43,363 INFO L87 Difference]: Start difference. First operand 98 states and 124 transitions. Second operand 12 states. [2020-10-15 05:00:44,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 05:00:44,200 INFO L93 Difference]: Finished difference Result 172 states and 220 transitions. [2020-10-15 05:00:44,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 05:00:44,201 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 81 [2020-10-15 05:00:44,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 05:00:44,203 INFO L225 Difference]: With dead ends: 172 [2020-10-15 05:00:44,203 INFO L226 Difference]: Without dead ends: 102 [2020-10-15 05:00:44,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2020-10-15 05:00:44,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-15 05:00:44,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2020-10-15 05:00:44,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-15 05:00:44,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 127 transitions. [2020-10-15 05:00:44,229 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 127 transitions. Word has length 81 [2020-10-15 05:00:44,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 05:00:44,229 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 127 transitions. [2020-10-15 05:00:44,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 05:00:44,230 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 127 transitions. [2020-10-15 05:00:44,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-15 05:00:44,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 05:00:44,233 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-15 05:00:44,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 05:00:44,233 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 05:00:44,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 05:00:44,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1471493578, now seen corresponding path program 1 times [2020-10-15 05:00:44,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 05:00:44,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717294930] [2020-10-15 05:00:44,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 05:00:44,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 05:00:44,267 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-15 05:00:44,268 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 05:00:44,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 05:00:44,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 05:00:44 BoogieIcfgContainer [2020-10-15 05:00:44,302 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 05:00:44,305 INFO L168 Benchmark]: Toolchain (without parser) took 16208.92 ms. Allocated memory was 147.8 MB in the beginning and 379.1 MB in the end (delta: 231.2 MB). Free memory was 102.1 MB in the beginning and 109.7 MB in the end (delta: -7.6 MB). Peak memory consumption was 223.6 MB. Max. memory is 7.1 GB. [2020-10-15 05:00:44,310 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 147.8 MB. Free memory was 121.1 MB in the beginning and 120.7 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-10-15 05:00:44,311 INFO L168 Benchmark]: CACSL2BoogieTranslator took 513.74 ms. Allocated memory was 147.8 MB in the beginning and 209.2 MB in the end (delta: 61.3 MB). Free memory was 102.1 MB in the beginning and 184.6 MB in the end (delta: -82.5 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. [2020-10-15 05:00:44,312 INFO L168 Benchmark]: Boogie Preprocessor took 56.53 ms. Allocated memory is still 209.2 MB. Free memory was 184.6 MB in the beginning and 182.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2020-10-15 05:00:44,313 INFO L168 Benchmark]: RCFGBuilder took 617.01 ms. Allocated memory is still 209.2 MB. Free memory was 182.8 MB in the beginning and 147.9 MB in the end (delta: 34.9 MB). Peak memory consumption was 34.9 MB. Max. memory is 7.1 GB. [2020-10-15 05:00:44,314 INFO L168 Benchmark]: TraceAbstraction took 15016.50 ms. Allocated memory was 209.2 MB in the beginning and 379.1 MB in the end (delta: 169.9 MB). Free memory was 147.0 MB in the beginning and 109.7 MB in the end (delta: 37.3 MB). Peak memory consumption was 207.2 MB. Max. memory is 7.1 GB. [2020-10-15 05:00:44,327 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 147.8 MB. Free memory was 121.1 MB in the beginning and 120.7 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 513.74 ms. Allocated memory was 147.8 MB in the beginning and 209.2 MB in the end (delta: 61.3 MB). Free memory was 102.1 MB in the beginning and 184.6 MB in the end (delta: -82.5 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 56.53 ms. Allocated memory is still 209.2 MB. Free memory was 184.6 MB in the beginning and 182.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 617.01 ms. Allocated memory is still 209.2 MB. Free memory was 182.8 MB in the beginning and 147.9 MB in the end (delta: 34.9 MB). Peak memory consumption was 34.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15016.50 ms. Allocated memory was 209.2 MB in the beginning and 379.1 MB in the end (delta: 169.9 MB). Free memory was 147.0 MB in the beginning and 109.7 MB in the end (delta: 37.3 MB). Peak memory consumption was 207.2 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: [L103] 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; [L103] RET, EXPR nondet_tree() [L103] CALL task(nondet_tree()) [L81] 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; [L81] RET, EXPR min(t) [L81] int a = min(t); [L82] int b; [L84] CALL, EXPR size(t) [L76] COND FALSE !(!t) [L77] EXPR t->left [L77] CALL, EXPR size(t->left) [L76] COND TRUE !t [L76] return 0; [L77] RET, EXPR size(t->left) [L77] EXPR t->right [L77] CALL, EXPR size(t->right) [L76] COND TRUE !t [L76] return 0; [L77] RET, EXPR size(t->right) [L77] return size(t->left) + size(t->right) + 1; [L84] RET, EXPR size(t) [L84] int n = size(t); [L85] CALL assume_abort_if_not(n != 0) [L10] COND FALSE !(!cond) [L85] RET assume_abort_if_not(n != 0) [L86] EXPR, FCALL calloc(n, sizeof(int)) [L86] int *x = calloc(n, sizeof(int)); [L87] CALL tree_inorder(t, x, n) [L65] COND FALSE !(!t) [L68] EXPR t->left [L68] CALL, EXPR tree_inorder(t->left, a, i) [L65] COND TRUE !t [L66] return i; [L68] RET, EXPR tree_inorder(t->left, a, i) [L68] i = tree_inorder(t->left, a, i) [L69] EXPR i++ [L69] EXPR t->data [L69] a[i++] = t->data [L70] EXPR t->right [L70] CALL, EXPR tree_inorder(t->right, a, i) [L65] COND TRUE !t [L66] return i; [L70] RET, EXPR tree_inorder(t->right, a, i) [L70] i = tree_inorder(t->right, a, i) [L71] return i; [L87] RET tree_inorder(t, x, n) [L88] EXPR x[0] [L88] CALL __VERIFIER_assert(a == x[0]) [L14] COND TRUE !cond [L14] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 96 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.9s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 414 SDtfs, 569 SDslu, 1162 SDs, 0 SdLazy, 1920 SolverSat, 582 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 160 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred in iteration=5, 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, 5 MinimizatonAttempts, 26 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 10.5s InterpolantComputationTime, 384 NumberOfCodeBlocks, 384 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 288 ConstructedInterpolants, 0 QuantifiedInterpolants, 62874 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 66/72 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...