/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/list-simple/dll2n_insert_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:38:29,733 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:38:29,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:38:29,760 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:38:29,760 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:38:29,761 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:38:29,763 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:38:29,765 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:38:29,766 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:38:29,767 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:38:29,768 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:38:29,769 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:38:29,769 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:38:29,770 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:38:29,771 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:38:29,772 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:38:29,773 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:38:29,774 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:38:29,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:38:29,778 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:38:29,779 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:38:29,780 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:38:29,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:38:29,782 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:38:29,784 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:38:29,785 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:38:29,785 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:38:29,786 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:38:29,786 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:38:29,787 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:38:29,787 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:38:29,788 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:38:29,789 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:38:29,789 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:38:29,791 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:38:29,791 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:38:29,792 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:38:29,792 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:38:29,792 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:38:29,793 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:38:29,793 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:38:29,794 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 [2020-10-14 23:38:29,819 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:38:29,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:38:29,820 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:38:29,820 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:38:29,821 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:38:29,821 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:38:29,821 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:38:29,821 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:38:29,822 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:38:29,822 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:38:29,822 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:38:29,822 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:38:29,822 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:38:29,823 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:38:29,823 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:38:29,823 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:38:29,823 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:38:29,823 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:38:29,824 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:38:29,824 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:38:29,824 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:38:29,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:38:29,824 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:38:29,825 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:38:29,825 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:38:29,825 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:38:29,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:38:29,825 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:38:29,826 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:38:29,826 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; [2020-10-14 23:38:30,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:38:30,145 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:38:30,150 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:38:30,153 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:38:30,153 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:38:30,154 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_insert_unequal.i [2020-10-14 23:38:30,232 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0936d162d/12f8bedbce304f42b57531a9858b58ac/FLAG1c202a5cf [2020-10-14 23:38:30,872 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:38:30,873 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/dll2n_insert_unequal.i [2020-10-14 23:38:30,897 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0936d162d/12f8bedbce304f42b57531a9858b58ac/FLAG1c202a5cf [2020-10-14 23:38:31,065 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0936d162d/12f8bedbce304f42b57531a9858b58ac [2020-10-14 23:38:31,077 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:38:31,079 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:38:31,084 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:38:31,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:38:31,088 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:38:31,089 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:38:31" (1/1) ... [2020-10-14 23:38:31,093 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63983835 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:31, skipping insertion in model container [2020-10-14 23:38:31,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:38:31" (1/1) ... [2020-10-14 23:38:31,103 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:38:31,158 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:38:31,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:38:31,642 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:38:31,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:38:31,752 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:38:31,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:31 WrapperNode [2020-10-14 23:38:31,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:38:31,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:38:31,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:38:31,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:38:31,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:31" (1/1) ... [2020-10-14 23:38:31,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:31" (1/1) ... [2020-10-14 23:38:31,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:31" (1/1) ... [2020-10-14 23:38:31,788 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:31" (1/1) ... [2020-10-14 23:38:31,808 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:31" (1/1) ... [2020-10-14 23:38:31,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:31" (1/1) ... [2020-10-14 23:38:31,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:31" (1/1) ... [2020-10-14 23:38:31,827 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:38:31,827 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:38:31,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:38:31,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:38:31,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:31" (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 [2020-10-14 23:38:31,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:38:31,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:38:31,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-14 23:38:31,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-14 23:38:31,894 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-14 23:38:31,895 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-14 23:38:31,896 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2020-10-14 23:38:31,897 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2020-10-14 23:38:31,897 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert [2020-10-14 23:38:31,897 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:38:31,897 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:38:31,897 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-14 23:38:31,898 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-14 23:38:31,898 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 23:38:31,898 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 23:38:31,899 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 23:38:31,899 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 23:38:31,899 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 23:38:31,899 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 23:38:31,899 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 23:38:31,900 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 23:38:31,901 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 23:38:31,901 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 23:38:31,901 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 23:38:31,902 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 23:38:31,903 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 23:38:31,903 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 23:38:31,903 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 23:38:31,903 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 23:38:31,903 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 23:38:31,903 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 23:38:31,903 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 23:38:31,903 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 23:38:31,904 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 23:38:31,904 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 23:38:31,904 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 23:38:31,904 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 23:38:31,904 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 23:38:31,904 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 23:38:31,904 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 23:38:31,904 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 23:38:31,904 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 23:38:31,905 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 23:38:31,905 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 23:38:31,905 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 23:38:31,905 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 23:38:31,905 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 23:38:31,905 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 23:38:31,906 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 23:38:31,906 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 23:38:31,906 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 23:38:31,906 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 23:38:31,906 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 23:38:31,906 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 23:38:31,907 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 23:38:31,907 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 23:38:31,907 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 23:38:31,907 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 23:38:31,907 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 23:38:31,907 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 23:38:31,907 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 23:38:31,908 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 23:38:31,908 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 23:38:31,908 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 23:38:31,908 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 23:38:31,908 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 23:38:31,908 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 23:38:31,908 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 23:38:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 23:38:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 23:38:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 23:38:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 23:38:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 23:38:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 23:38:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 23:38:31,910 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 23:38:31,910 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:38:31,910 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 23:38:31,910 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 23:38:31,910 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 23:38:31,910 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 23:38:31,911 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 23:38:31,911 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 23:38:31,911 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 23:38:31,911 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 23:38:31,911 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 23:38:31,911 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 23:38:31,911 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 23:38:31,912 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 23:38:31,912 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 23:38:31,912 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 23:38:31,912 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 23:38:31,912 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 23:38:31,912 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 23:38:31,912 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 23:38:31,913 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 23:38:31,913 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 23:38:31,913 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 23:38:31,913 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 23:38:31,913 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 23:38:31,913 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 23:38:31,913 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 23:38:31,914 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 23:38:31,914 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 23:38:31,914 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 23:38:31,914 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 23:38:31,914 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 23:38:31,914 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 23:38:31,914 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 23:38:31,915 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 23:38:31,915 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 23:38:31,915 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 23:38:31,915 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 23:38:31,915 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 23:38:31,915 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 23:38:31,916 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 23:38:31,916 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-14 23:38:31,916 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-14 23:38:31,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 23:38:31,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 23:38:31,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:38:31,917 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2020-10-14 23:38:31,917 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2020-10-14 23:38:31,917 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 23:38:31,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:38:31,917 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert [2020-10-14 23:38:31,917 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:38:31,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 23:38:31,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-14 23:38:31,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:38:31,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:38:31,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:38:32,332 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-14 23:38:32,558 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:38:32,558 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-14 23:38:32,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:38:32 BoogieIcfgContainer [2020-10-14 23:38:32,563 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:38:32,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:38:32,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:38:32,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:38:32,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:38:31" (1/3) ... [2020-10-14 23:38:32,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eaf7cee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:38:32, skipping insertion in model container [2020-10-14 23:38:32,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:38:31" (2/3) ... [2020-10-14 23:38:32,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eaf7cee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:38:32, skipping insertion in model container [2020-10-14 23:38:32,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:38:32" (3/3) ... [2020-10-14 23:38:32,574 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2n_insert_unequal.i [2020-10-14 23:38:32,585 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:38:32,594 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:38:32,609 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:38:32,632 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:38:32,632 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:38:32,632 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:38:32,632 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:38:32,633 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:38:32,633 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:38:32,633 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:38:32,633 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:38:32,655 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2020-10-14 23:38:32,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 23:38:32,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:38:32,664 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] [2020-10-14 23:38:32,665 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:38:32,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:38:32,672 INFO L82 PathProgramCache]: Analyzing trace with hash 405466376, now seen corresponding path program 1 times [2020-10-14 23:38:32,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:38:32,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765755379] [2020-10-14 23:38:32,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:38:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:32,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:33,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:33,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:33,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:34,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:34,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:38:34,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:38:34,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1891 [2020-10-14 23:38:34,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:34,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:34,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:38:34,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:38:34,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 23:38:34,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 23:38:34,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:38:34,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:34,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:34,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:34,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:38:34,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:34,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:38:34,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:34,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:34,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:38:34,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:34,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:38:34,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:34,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:38:34,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:34,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:34,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:34,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:38:34,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:34,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 23:38:34,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:34,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:34,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:38:34,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:34,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:38:34,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:34,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 23:38:34,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:34,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:34,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:35,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:35,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:35,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:38:35,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:38:35,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-14 23:38:35,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:35,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:35,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:38:35,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:38:35,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 23:38:35,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:35,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:38:35,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:35,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:35,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:35,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:38:35,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:35,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 23:38:35,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:35,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:35,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:38:35,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:38:35,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:38:35,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:35,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:38:35,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765755379] [2020-10-14 23:38:35,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:38:35,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-14 23:38:35,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661204701] [2020-10-14 23:38:35,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:38:35,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:38:35,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:38:35,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:38:35,547 INFO L87 Difference]: Start difference. First operand 57 states. Second operand 15 states. [2020-10-14 23:38:36,730 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2020-10-14 23:38:37,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:38:37,102 INFO L93 Difference]: Finished difference Result 129 states and 184 transitions. [2020-10-14 23:38:37,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:38:37,104 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 31 [2020-10-14 23:38:37,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:38:37,117 INFO L225 Difference]: With dead ends: 129 [2020-10-14 23:38:37,118 INFO L226 Difference]: Without dead ends: 62 [2020-10-14 23:38:37,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2020-10-14 23:38:37,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-14 23:38:37,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 57. [2020-10-14 23:38:37,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-14 23:38:37,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 72 transitions. [2020-10-14 23:38:37,214 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 72 transitions. Word has length 31 [2020-10-14 23:38:37,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:38:37,216 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 72 transitions. [2020-10-14 23:38:37,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:38:37,217 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 72 transitions. [2020-10-14 23:38:37,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 23:38:37,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:38:37,221 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] [2020-10-14 23:38:37,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:38:37,221 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:38:37,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:38:37,222 INFO L82 PathProgramCache]: Analyzing trace with hash 820356998, now seen corresponding path program 1 times [2020-10-14 23:38:37,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:38:37,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291630212] [2020-10-14 23:38:37,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:38:37,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:37,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:37,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:37,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:38,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:38,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:38:38,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:38:38,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 855 [2020-10-14 23:38:38,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:38,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:38,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:38:38,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:38:38,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 23:38:38,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:38,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:38:38,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:38,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:38,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:38,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:38:38,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:38,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:38:38,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:38,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:38,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:38:38,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:38,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:38:38,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:38,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:38:38,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:38,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:38,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:38,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:38,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:38:38,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:38:38,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 23:38:38,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:38,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:38,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:38:38,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:38,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:38:38,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:38,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 23:38:38,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:38,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:38,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:38,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:38,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:38:38,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:38:38,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-14 23:38:38,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:38,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:38,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:38:38,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:38:38,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:38:38,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:38,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:38:38,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:38,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:38,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:38,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:38:38,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:38,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 23:38:38,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:38,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:38,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:38:38,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:38,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:38:38,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:38,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:38:38,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291630212] [2020-10-14 23:38:38,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:38:38,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 23:38:38,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057396185] [2020-10-14 23:38:38,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:38:38,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:38:38,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:38:38,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:38:38,414 INFO L87 Difference]: Start difference. First operand 57 states and 72 transitions. Second operand 8 states. [2020-10-14 23:38:38,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:38:38,678 INFO L93 Difference]: Finished difference Result 71 states and 92 transitions. [2020-10-14 23:38:38,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:38:38,679 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-10-14 23:38:38,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:38:38,681 INFO L225 Difference]: With dead ends: 71 [2020-10-14 23:38:38,681 INFO L226 Difference]: Without dead ends: 53 [2020-10-14 23:38:38,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:38:38,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-14 23:38:38,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 48. [2020-10-14 23:38:38,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-14 23:38:38,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 59 transitions. [2020-10-14 23:38:38,704 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 59 transitions. Word has length 31 [2020-10-14 23:38:38,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:38:38,705 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 59 transitions. [2020-10-14 23:38:38,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 23:38:38,706 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 59 transitions. [2020-10-14 23:38:38,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 23:38:38,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:38:38,709 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] [2020-10-14 23:38:38,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:38:38,710 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:38:38,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:38:38,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1942146218, now seen corresponding path program 1 times [2020-10-14 23:38:38,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:38:38,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787554378] [2020-10-14 23:38:38,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:38:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:38,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:38,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:38,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:40,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:40,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 23:38:40,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:38:40,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1914 [2020-10-14 23:38:40,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:40,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:40,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:38:40,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 23:38:40,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 23:38:40,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:40,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:38:40,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:40,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:40,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:40,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:38:40,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:40,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:38:40,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:40,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:40,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:38:40,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:40,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:38:40,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:40,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:38:40,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:40,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:40,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:40,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:38:40,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:40,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 23:38:40,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:40,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:40,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:38:40,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:40,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:38:40,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:40,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 23:38:40,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:40,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:40,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:40,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:38:40,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:40,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 23:38:40,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:40,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:40,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:38:40,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:38:40,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:38:40,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:40,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:38:40,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:40,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:40,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:40,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:38:40,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:40,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 23:38:40,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:40,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:40,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:38:40,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:40,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:38:40,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:40,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:38:40,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787554378] [2020-10-14 23:38:40,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:38:40,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 23:38:40,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561768978] [2020-10-14 23:38:40,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 23:38:40,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:38:40,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 23:38:40,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:38:40,909 INFO L87 Difference]: Start difference. First operand 48 states and 59 transitions. Second operand 10 states. [2020-10-14 23:38:41,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:38:41,243 INFO L93 Difference]: Finished difference Result 64 states and 80 transitions. [2020-10-14 23:38:41,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:38:41,243 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2020-10-14 23:38:41,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:38:41,245 INFO L225 Difference]: With dead ends: 64 [2020-10-14 23:38:41,245 INFO L226 Difference]: Without dead ends: 49 [2020-10-14 23:38:41,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:38:41,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-14 23:38:41,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2020-10-14 23:38:41,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-14 23:38:41,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2020-10-14 23:38:41,254 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 32 [2020-10-14 23:38:41,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:38:41,254 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2020-10-14 23:38:41,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 23:38:41,254 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2020-10-14 23:38:41,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 23:38:41,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:38:41,256 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] [2020-10-14 23:38:41,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:38:41,256 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:38:41,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:38:41,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1142511384, now seen corresponding path program 1 times [2020-10-14 23:38:41,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:38:41,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645845567] [2020-10-14 23:38:41,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:38:41,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:41,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:41,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:41,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:42,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:42,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:44,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:44,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 23:38:44,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:38:44,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3368 [2020-10-14 23:38:44,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:44,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:44,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:38:44,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 23:38:44,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 23:38:44,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:44,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:38:44,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:44,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:44,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:44,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:38:44,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:44,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:38:44,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:44,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:44,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:38:44,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:44,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:38:44,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:44,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:38:44,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:44,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:44,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:44,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:38:44,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:44,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 23:38:44,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:44,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:44,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:38:44,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:44,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:38:44,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:44,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 23:38:44,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:44,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:44,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:44,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:44,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:38:44,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:38:44,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 23:38:44,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:44,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:44,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:38:44,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:44,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:38:44,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:44,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:38:44,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:44,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:44,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:44,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:38:44,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:44,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:38:44,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:44,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:44,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:38:44,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:44,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:38:44,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:44,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:38:44,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645845567] [2020-10-14 23:38:44,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:38:44,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:38:44,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747544553] [2020-10-14 23:38:44,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:38:44,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:38:44,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:38:44,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:38:44,975 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand 11 states. [2020-10-14 23:38:45,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:38:45,300 INFO L93 Difference]: Finished difference Result 79 states and 98 transitions. [2020-10-14 23:38:45,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:38:45,301 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-10-14 23:38:45,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:38:45,302 INFO L225 Difference]: With dead ends: 79 [2020-10-14 23:38:45,302 INFO L226 Difference]: Without dead ends: 70 [2020-10-14 23:38:45,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:38:45,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-14 23:38:45,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 57. [2020-10-14 23:38:45,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-14 23:38:45,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 69 transitions. [2020-10-14 23:38:45,312 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 69 transitions. Word has length 37 [2020-10-14 23:38:45,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:38:45,312 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 69 transitions. [2020-10-14 23:38:45,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:38:45,313 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 69 transitions. [2020-10-14 23:38:45,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 23:38:45,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:38:45,314 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] [2020-10-14 23:38:45,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:38:45,315 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:38:45,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:38:45,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1058060003, now seen corresponding path program 1 times [2020-10-14 23:38:45,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:38:45,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839552509] [2020-10-14 23:38:45,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:38:45,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:45,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:45,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:45,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:46,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:46,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:47,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:47,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:48,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:49,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:49,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:50,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:50,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 23:38:50,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 23:38:50,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 23:38:50,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:50,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:50,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 23:38:50,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:38:50,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 23:38:50,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:50,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:38:50,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:50,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:50,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:50,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:38:50,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:38:50,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:38:50,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:50,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:50,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:38:50,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:50,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:38:50,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:50,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:38:50,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:50,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:50,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:50,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:50,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:50,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 23:38:50,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:38:50,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-10-14 23:38:50,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:50,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:50,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:38:50,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:38:50,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:38:50,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:51,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-14 23:38:51,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:51,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:51,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:51,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:51,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:51,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:38:51,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:38:51,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 565 [2020-10-14 23:38:51,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:51,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:51,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:38:51,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:51,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 23:38:51,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:52,558 WARN L193 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 40 [2020-10-14 23:38:54,984 WARN L193 SmtUtils]: Spent 2.25 s on a formula simplification. DAG size of input: 245 DAG size of output: 113 [2020-10-14 23:38:55,426 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 33 [2020-10-14 23:38:55,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:38:55,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:38:55,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:55,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:38:55,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:38:55,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:38:55,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:38:55,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 23:38:55,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:38:55,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:38:55,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:38:55,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:38:55,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:38:55,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:38:55,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:38:55,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [839552509] [2020-10-14 23:38:55,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:38:55,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 23:38:55,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233831315] [2020-10-14 23:38:55,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 23:38:55,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:38:55,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 23:38:55,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:38:55,624 INFO L87 Difference]: Start difference. First operand 57 states and 69 transitions. Second operand 21 states. [2020-10-14 23:38:57,959 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 122 DAG size of output: 122 [2020-10-14 23:39:00,375 WARN L193 SmtUtils]: Spent 2.24 s on a formula simplification. DAG size of input: 131 DAG size of output: 130 [2020-10-14 23:39:01,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:39:01,163 INFO L93 Difference]: Finished difference Result 108 states and 133 transitions. [2020-10-14 23:39:01,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:39:01,164 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 38 [2020-10-14 23:39:01,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:39:01,166 INFO L225 Difference]: With dead ends: 108 [2020-10-14 23:39:01,166 INFO L226 Difference]: Without dead ends: 78 [2020-10-14 23:39:01,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=99, Invalid=893, Unknown=0, NotChecked=0, Total=992 [2020-10-14 23:39:01,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-14 23:39:01,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 57. [2020-10-14 23:39:01,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-14 23:39:01,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 70 transitions. [2020-10-14 23:39:01,178 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 70 transitions. Word has length 38 [2020-10-14 23:39:01,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:39:01,183 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 70 transitions. [2020-10-14 23:39:01,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 23:39:01,183 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 70 transitions. [2020-10-14 23:39:01,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 23:39:01,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:39:01,185 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:39:01,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:39:01,185 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:39:01,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:39:01,186 INFO L82 PathProgramCache]: Analyzing trace with hash 380933720, now seen corresponding path program 1 times [2020-10-14 23:39:01,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:39:01,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729605586] [2020-10-14 23:39:01,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:39:01,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:01,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:03,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:03,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 23:39:03,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:03,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2220 [2020-10-14 23:39:03,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:03,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:03,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-14 23:39:03,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:39:03,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 23:39:03,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:39:03,693 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 37 [2020-10-14 23:39:03,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:39:03,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:03,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:03,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:03,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:39:03,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:03,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:39:03,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:03,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:03,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:39:03,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:03,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:39:03,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:39:03,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:39:03,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:03,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:03,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:03,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:39:03,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:03,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-14 23:39:03,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:03,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:03,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:39:03,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:03,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:39:03,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:04,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 23:39:04,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:04,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:04,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:04,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:39:04,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:04,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 353 [2020-10-14 23:39:04,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:04,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:04,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:39:04,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:39:04,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:39:04,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:39:05,253 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2020-10-14 23:39:05,751 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 70 [2020-10-14 23:39:06,270 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 85 [2020-10-14 23:39:06,481 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-14 23:39:06,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:39:06,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:06,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:06,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:06,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:39:06,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:06,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 23:39:06,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:06,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:06,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:39:06,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:39:06,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:39:06,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:39:08,269 WARN L193 SmtUtils]: Spent 908.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 42 [2020-10-14 23:39:08,296 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:39:08,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729605586] [2020-10-14 23:39:08,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:39:08,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 23:39:08,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654024245] [2020-10-14 23:39:08,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 23:39:08,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:39:08,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 23:39:08,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2020-10-14 23:39:08,299 INFO L87 Difference]: Start difference. First operand 57 states and 70 transitions. Second operand 26 states. [2020-10-14 23:39:10,970 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 61 [2020-10-14 23:39:11,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:39:11,748 INFO L93 Difference]: Finished difference Result 83 states and 103 transitions. [2020-10-14 23:39:11,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 23:39:11,750 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 42 [2020-10-14 23:39:11,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:39:11,752 INFO L225 Difference]: With dead ends: 83 [2020-10-14 23:39:11,752 INFO L226 Difference]: Without dead ends: 81 [2020-10-14 23:39:11,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=184, Invalid=1622, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 23:39:11,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-14 23:39:11,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 62. [2020-10-14 23:39:11,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-14 23:39:11,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 76 transitions. [2020-10-14 23:39:11,764 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 76 transitions. Word has length 42 [2020-10-14 23:39:11,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:39:11,765 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 76 transitions. [2020-10-14 23:39:11,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 23:39:11,765 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 76 transitions. [2020-10-14 23:39:11,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 23:39:11,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:39:11,766 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:39:11,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 23:39:11,766 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:39:11,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:39:11,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1885357727, now seen corresponding path program 1 times [2020-10-14 23:39:11,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:39:11,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362917598] [2020-10-14 23:39:11,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:39:11,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:11,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:11,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:12,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:13,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:13,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:14,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:15,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:15,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:16,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:16,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:16,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 23:39:16,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 23:39:16,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 23:39:16,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:16,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:16,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 23:39:16,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:39:16,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 23:39:16,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:16,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:39:16,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:16,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:16,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:16,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:39:16,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:16,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:39:16,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:16,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:16,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:39:16,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:16,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:39:16,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:16,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:39:17,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:17,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:17,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:17,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:39:17,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:17,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-14 23:39:17,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:17,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:17,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:39:17,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:17,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:39:17,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:17,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 23:39:17,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:17,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:17,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:17,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:39:17,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:17,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-14 23:39:17,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:17,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:17,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:39:17,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:39:17,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:39:17,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:17,778 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2020-10-14 23:39:17,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:39:17,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:17,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:17,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:17,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:39:17,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:17,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 23:39:17,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:17,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:17,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:39:17,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:39:17,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:39:17,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:39:17,960 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:39:17,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362917598] [2020-10-14 23:39:17,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:39:17,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-14 23:39:17,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869945201] [2020-10-14 23:39:17,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 23:39:17,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:39:17,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 23:39:17,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:39:17,962 INFO L87 Difference]: Start difference. First operand 62 states and 76 transitions. Second operand 18 states. [2020-10-14 23:39:19,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:39:19,160 INFO L93 Difference]: Finished difference Result 128 states and 161 transitions. [2020-10-14 23:39:19,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:39:19,161 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 43 [2020-10-14 23:39:19,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:39:19,163 INFO L225 Difference]: With dead ends: 128 [2020-10-14 23:39:19,163 INFO L226 Difference]: Without dead ends: 80 [2020-10-14 23:39:19,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2020-10-14 23:39:19,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-14 23:39:19,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 62. [2020-10-14 23:39:19,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-14 23:39:19,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 74 transitions. [2020-10-14 23:39:19,191 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 74 transitions. Word has length 43 [2020-10-14 23:39:19,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:39:19,191 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 74 transitions. [2020-10-14 23:39:19,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 23:39:19,191 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 74 transitions. [2020-10-14 23:39:19,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 23:39:19,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:39:19,195 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:39:19,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 23:39:19,196 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:39:19,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:39:19,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1291621555, now seen corresponding path program 1 times [2020-10-14 23:39:19,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:39:19,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221500980] [2020-10-14 23:39:19,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:39:19,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:19,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:19,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:19,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:19,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:21,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:21,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 23:39:21,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:39:21,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2142 [2020-10-14 23:39:21,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:21,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:21,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:39:21,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:39:21,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 23:39:21,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:21,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:39:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:21,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:21,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:21,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:39:21,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:21,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:39:21,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:21,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:21,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:39:21,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:21,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:39:21,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:21,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:39:21,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:21,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:21,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:21,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:21,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:39:21,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:39:21,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-14 23:39:21,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:21,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:21,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:39:21,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:21,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:39:21,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:21,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 23:39:21,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:21,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:21,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:21,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:21,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 23:39:21,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:39:21,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-14 23:39:21,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:21,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:21,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:39:21,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:39:21,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 23:39:21,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:21,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:39:21,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:21,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:22,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:22,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:39:22,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:22,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 23:39:22,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:22,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:22,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:39:22,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:39:22,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:39:22,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:39:22,177 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:39:22,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221500980] [2020-10-14 23:39:22,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:39:22,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-14 23:39:22,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005626078] [2020-10-14 23:39:22,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:39:22,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:39:22,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:39:22,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:39:22,179 INFO L87 Difference]: Start difference. First operand 62 states and 74 transitions. Second operand 16 states. [2020-10-14 23:39:23,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:39:23,020 INFO L93 Difference]: Finished difference Result 75 states and 91 transitions. [2020-10-14 23:39:23,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 23:39:23,021 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 43 [2020-10-14 23:39:23,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:39:23,022 INFO L225 Difference]: With dead ends: 75 [2020-10-14 23:39:23,023 INFO L226 Difference]: Without dead ends: 62 [2020-10-14 23:39:23,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:39:23,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-14 23:39:23,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-10-14 23:39:23,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-14 23:39:23,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 73 transitions. [2020-10-14 23:39:23,034 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 73 transitions. Word has length 43 [2020-10-14 23:39:23,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:39:23,034 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 73 transitions. [2020-10-14 23:39:23,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:39:23,035 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 73 transitions. [2020-10-14 23:39:23,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 23:39:23,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:39:23,035 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:39:23,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 23:39:23,036 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:39:23,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:39:23,036 INFO L82 PathProgramCache]: Analyzing trace with hash 2100968181, now seen corresponding path program 1 times [2020-10-14 23:39:23,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:39:23,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417646822] [2020-10-14 23:39:23,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:39:23,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:23,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:23,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:23,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:24,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:24,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 23:39:24,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:39:24,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1104 [2020-10-14 23:39:24,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:24,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:24,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 23:39:24,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:39:24,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 23:39:24,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:24,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:39:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:24,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:24,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:24,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:39:24,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:24,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:39:24,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:24,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:24,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:39:24,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:24,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:39:24,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:24,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:39:24,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:24,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:24,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:24,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:39:24,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:24,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 23:39:24,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:24,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:24,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:39:24,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:24,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:39:24,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:24,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 23:39:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:24,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:24,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:24,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:24,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 23:39:24,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:39:24,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 23:39:24,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:24,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:24,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:39:24,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:39:24,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 23:39:24,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:24,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:39:24,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:24,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:24,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:24,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:39:24,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:24,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 23:39:24,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:24,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:24,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:39:24,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:39:24,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:39:24,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:24,678 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:39:24,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417646822] [2020-10-14 23:39:24,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:39:24,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:39:24,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129799813] [2020-10-14 23:39:24,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:39:24,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:39:24,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:39:24,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:39:24,681 INFO L87 Difference]: Start difference. First operand 62 states and 73 transitions. Second operand 17 states. [2020-10-14 23:39:25,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:39:25,632 INFO L93 Difference]: Finished difference Result 76 states and 91 transitions. [2020-10-14 23:39:25,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:39:25,633 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 43 [2020-10-14 23:39:25,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:39:25,634 INFO L225 Difference]: With dead ends: 76 [2020-10-14 23:39:25,634 INFO L226 Difference]: Without dead ends: 62 [2020-10-14 23:39:25,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:39:25,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-14 23:39:25,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-10-14 23:39:25,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-14 23:39:25,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2020-10-14 23:39:25,654 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 43 [2020-10-14 23:39:25,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:39:25,655 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2020-10-14 23:39:25,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:39:25,655 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2020-10-14 23:39:25,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 23:39:25,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:39:25,656 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:39:25,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 23:39:25,657 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:39:25,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:39:25,657 INFO L82 PathProgramCache]: Analyzing trace with hash 806254722, now seen corresponding path program 2 times [2020-10-14 23:39:25,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:39:25,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83993024] [2020-10-14 23:39:25,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:39:25,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:25,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:25,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:26,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:26,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 23:39:26,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:39:26,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 558 [2020-10-14 23:39:26,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:26,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:26,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:39:26,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:39:26,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 23:39:26,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:26,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:39:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:26,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:26,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:26,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:39:26,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:26,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:39:26,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:26,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:26,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:39:26,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:26,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:39:26,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:26,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:39:26,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:26,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:26,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:26,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:26,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:39:26,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:39:26,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 23:39:26,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:26,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:26,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:39:26,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:26,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:39:26,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:26,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 23:39:26,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:26,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:26,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:26,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 23:39:26,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:26,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 23:39:26,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:26,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:26,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:39:26,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:39:26,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 23:39:26,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:26,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:39:26,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:26,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:26,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:26,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:39:26,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:26,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:39:26,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:26,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:26,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:39:26,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:26,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:39:26,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:26,449 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 23:39:26,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83993024] [2020-10-14 23:39:26,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:39:26,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:39:26,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484401232] [2020-10-14 23:39:26,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:39:26,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:39:26,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:39:26,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:39:26,451 INFO L87 Difference]: Start difference. First operand 62 states and 72 transitions. Second operand 9 states. [2020-10-14 23:39:26,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:39:26,706 INFO L93 Difference]: Finished difference Result 71 states and 85 transitions. [2020-10-14 23:39:26,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 23:39:26,707 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 43 [2020-10-14 23:39:26,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:39:26,708 INFO L225 Difference]: With dead ends: 71 [2020-10-14 23:39:26,708 INFO L226 Difference]: Without dead ends: 50 [2020-10-14 23:39:26,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:39:26,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-14 23:39:26,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-14 23:39:26,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-14 23:39:26,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2020-10-14 23:39:26,718 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 43 [2020-10-14 23:39:26,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:39:26,718 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2020-10-14 23:39:26,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:39:26,719 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2020-10-14 23:39:26,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 23:39:26,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:39:26,719 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:39:26,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 23:39:26,720 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:39:26,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:39:26,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1005109587, now seen corresponding path program 1 times [2020-10-14 23:39:26,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:39:26,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268689597] [2020-10-14 23:39:26,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:39:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:26,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:26,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:26,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:27,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:27,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:28,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:28,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 23:39:28,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:39:28,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1794 [2020-10-14 23:39:28,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:28,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:28,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:39:28,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:39:28,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 23:39:28,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:28,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:39:28,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:28,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:28,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:28,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:39:28,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:28,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:39:28,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:28,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:28,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:39:28,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:28,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:39:28,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:28,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:39:28,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:28,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:28,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:28,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:28,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:39:28,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:39:28,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 23:39:28,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:28,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:28,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:39:28,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:28,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:39:28,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:28,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 23:39:28,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:28,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:28,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:28,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:28,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:39:28,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:39:28,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 23:39:28,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:28,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:28,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:39:28,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:28,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:39:28,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:28,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:39:28,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:28,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:28,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:28,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:39:28,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:28,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:39:28,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:28,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:28,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:39:28,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:28,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:39:28,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:28,764 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 23:39:28,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [268689597] [2020-10-14 23:39:28,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:39:28,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 23:39:28,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497122582] [2020-10-14 23:39:28,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:39:28,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:39:28,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:39:28,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:39:28,765 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand 8 states. [2020-10-14 23:39:28,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:39:28,974 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2020-10-14 23:39:28,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:39:28,974 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-10-14 23:39:28,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:39:28,975 INFO L225 Difference]: With dead ends: 60 [2020-10-14 23:39:28,975 INFO L226 Difference]: Without dead ends: 51 [2020-10-14 23:39:28,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:39:28,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-14 23:39:28,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2020-10-14 23:39:28,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-14 23:39:28,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-14 23:39:28,990 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 44 [2020-10-14 23:39:28,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:39:28,990 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-14 23:39:28,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 23:39:28,991 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-14 23:39:28,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 23:39:28,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:39:28,992 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:39:28,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 23:39:28,992 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:39:28,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:39:28,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1093571592, now seen corresponding path program 1 times [2020-10-14 23:39:28,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:39:28,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029699974] [2020-10-14 23:39:28,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:39:29,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:29,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:30,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:30,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 23:39:30,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:30,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1645 [2020-10-14 23:39:30,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:30,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:30,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 23:39:30,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:39:30,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 23:39:30,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:30,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:39:30,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:30,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:30,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:30,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:39:30,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:30,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:39:30,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:30,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:30,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:39:30,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:30,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:39:30,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:30,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:39:30,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:30,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:30,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:30,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:39:30,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:30,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 23:39:30,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:30,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:30,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:39:30,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:30,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:39:30,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:31,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 23:39:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:31,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:31,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:31,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:39:31,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:31,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-14 23:39:31,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:31,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:31,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:39:31,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:39:31,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:39:31,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:32,262 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2020-10-14 23:39:33,342 WARN L193 SmtUtils]: Spent 892.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 133 [2020-10-14 23:39:34,220 WARN L193 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 97 [2020-10-14 23:39:34,983 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 77 [2020-10-14 23:39:34,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:39:34,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:34,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:35,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:35,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:39:35,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:35,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 23:39:35,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:35,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:35,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:39:35,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:39:35,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:39:35,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:35,333 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:39:35,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029699974] [2020-10-14 23:39:35,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:39:35,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 23:39:35,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913038976] [2020-10-14 23:39:35,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 23:39:35,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:39:35,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 23:39:35,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=641, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:39:35,336 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 27 states. [2020-10-14 23:39:38,190 WARN L193 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 118 [2020-10-14 23:39:39,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:39:39,035 INFO L93 Difference]: Finished difference Result 57 states and 60 transitions. [2020-10-14 23:39:39,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 23:39:39,036 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 45 [2020-10-14 23:39:39,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:39:39,037 INFO L225 Difference]: With dead ends: 57 [2020-10-14 23:39:39,037 INFO L226 Difference]: Without dead ends: 55 [2020-10-14 23:39:39,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=158, Invalid=1482, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 23:39:39,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-14 23:39:39,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2020-10-14 23:39:39,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-14 23:39:39,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2020-10-14 23:39:39,046 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 45 [2020-10-14 23:39:39,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:39:39,047 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2020-10-14 23:39:39,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 23:39:39,047 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2020-10-14 23:39:39,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 23:39:39,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:39:39,048 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:39:39,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 23:39:39,048 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:39:39,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:39:39,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1344641639, now seen corresponding path program 1 times [2020-10-14 23:39:39,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:39:39,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917097857] [2020-10-14 23:39:39,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:39:39,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:39,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:39,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:42,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:42,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:42,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 23:39:42,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:39:42,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3554 [2020-10-14 23:39:42,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:42,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:42,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 23:39:42,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:39:42,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 23:39:42,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:43,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:39:43,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:43,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:43,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:43,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:39:43,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:43,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:39:43,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:43,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:43,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:39:43,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:43,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:39:43,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:43,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:39:43,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:43,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:43,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:43,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:39:43,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:43,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 23:39:43,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:43,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:43,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:39:43,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:43,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:39:43,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:43,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 23:39:43,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:43,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:43,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:43,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:39:43,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:43,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-14 23:39:43,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:43,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:43,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:39:43,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:39:43,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:39:43,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:44,031 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2020-10-14 23:39:44,242 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 58 [2020-10-14 23:39:45,029 WARN L193 SmtUtils]: Spent 657.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 100 [2020-10-14 23:39:45,330 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2020-10-14 23:39:45,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:39:45,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:45,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:45,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:45,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:39:45,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:45,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 23:39:45,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:45,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:45,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:39:45,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:39:45,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:39:45,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:45,594 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:39:45,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [917097857] [2020-10-14 23:39:45,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:39:45,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 23:39:45,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119137279] [2020-10-14 23:39:45,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 23:39:45,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:39:45,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 23:39:45,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=462, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:39:45,597 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 23 states. [2020-10-14 23:39:47,449 WARN L193 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 124 [2020-10-14 23:39:48,124 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2020-10-14 23:39:48,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:39:48,766 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2020-10-14 23:39:48,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 23:39:48,767 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 47 [2020-10-14 23:39:48,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:39:48,768 INFO L225 Difference]: With dead ends: 70 [2020-10-14 23:39:48,769 INFO L226 Difference]: Without dead ends: 67 [2020-10-14 23:39:48,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=121, Invalid=1139, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 23:39:48,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-14 23:39:48,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 58. [2020-10-14 23:39:48,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-14 23:39:48,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2020-10-14 23:39:48,779 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 47 [2020-10-14 23:39:48,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:39:48,779 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2020-10-14 23:39:48,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 23:39:48,780 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2020-10-14 23:39:48,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 23:39:48,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:39:48,780 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:39:48,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 23:39:48,781 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:39:48,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:39:48,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1344639965, now seen corresponding path program 1 times [2020-10-14 23:39:48,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:39:48,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394466666] [2020-10-14 23:39:48,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:39:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:48,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:50,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:50,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 23:39:50,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:50,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1624 [2020-10-14 23:39:50,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:50,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:50,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 23:39:50,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:39:50,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 23:39:50,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:50,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:39:50,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:50,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:50,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:50,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:39:50,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:50,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:39:50,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:50,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:50,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:39:50,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:50,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:39:50,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:50,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:39:50,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:50,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:50,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:50,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:39:50,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:50,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 23:39:50,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:50,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:50,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:39:50,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:39:50,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:39:50,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:51,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 23:39:51,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:51,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:51,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:51,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:39:51,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:51,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-10-14 23:39:51,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:51,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:51,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:39:51,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:39:51,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:39:51,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:52,380 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 57 [2020-10-14 23:39:52,800 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 63 [2020-10-14 23:39:53,302 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 101 [2020-10-14 23:39:53,687 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 89 [2020-10-14 23:39:54,009 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2020-10-14 23:39:54,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:39:54,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:54,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:54,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:54,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:39:54,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:39:54,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 23:39:54,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:54,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:54,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:39:54,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:39:54,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:39:54,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:39:54,539 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 40 [2020-10-14 23:39:54,564 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:39:54,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394466666] [2020-10-14 23:39:54,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:39:54,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 23:39:54,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553602274] [2020-10-14 23:39:54,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 23:39:54,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:39:54,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 23:39:54,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=749, Unknown=0, NotChecked=0, Total=812 [2020-10-14 23:39:54,566 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand 29 states. [2020-10-14 23:39:55,604 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-10-14 23:39:56,113 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2020-10-14 23:39:56,474 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2020-10-14 23:39:57,656 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 96 [2020-10-14 23:39:58,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:39:58,627 INFO L93 Difference]: Finished difference Result 69 states and 72 transitions. [2020-10-14 23:39:58,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 23:39:58,628 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 47 [2020-10-14 23:39:58,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:39:58,629 INFO L225 Difference]: With dead ends: 69 [2020-10-14 23:39:58,629 INFO L226 Difference]: Without dead ends: 67 [2020-10-14 23:39:58,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=166, Invalid=1726, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 23:39:58,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-14 23:39:58,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 60. [2020-10-14 23:39:58,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-14 23:39:58,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-10-14 23:39:58,638 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 47 [2020-10-14 23:39:58,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:39:58,638 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-10-14 23:39:58,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 23:39:58,638 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-10-14 23:39:58,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 23:39:58,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:39:58,639 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:39:58,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 23:39:58,639 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:39:58,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:39:58,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1086476201, now seen corresponding path program 1 times [2020-10-14 23:39:58,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:39:58,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984645032] [2020-10-14 23:39:58,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:39:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:39:58,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:59,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:39:59,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:39:59,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 23:39:59,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:39:59,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1227 [2020-10-14 23:39:59,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:39:59,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:39:59,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 23:39:59,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:39:59,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 23:39:59,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:00,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:40:00,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:00,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:00,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:00,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:40:00,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:00,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:40:00,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:00,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:00,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:40:00,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:00,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:40:00,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:00,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:40:00,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:00,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:00,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:00,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:40:00,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:00,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 23:40:00,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:00,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:00,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:40:00,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:00,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:40:00,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:00,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 23:40:00,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:00,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:00,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:00,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:40:00,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:00,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 23:40:00,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:00,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:00,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:40:00,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:40:00,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:40:00,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:00,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:40:00,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:00,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:00,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:00,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:40:00,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:00,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 23:40:00,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:00,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:00,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:40:00,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:40:00,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:40:00,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:01,126 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:40:01,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984645032] [2020-10-14 23:40:01,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:40:01,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 23:40:01,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27454699] [2020-10-14 23:40:01,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:40:01,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:40:01,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:40:01,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:40:01,129 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 19 states. [2020-10-14 23:40:02,575 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2020-10-14 23:40:02,808 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2020-10-14 23:40:03,044 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2020-10-14 23:40:03,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:40:03,352 INFO L93 Difference]: Finished difference Result 70 states and 75 transitions. [2020-10-14 23:40:03,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 23:40:03,353 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 47 [2020-10-14 23:40:03,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:40:03,354 INFO L225 Difference]: With dead ends: 70 [2020-10-14 23:40:03,354 INFO L226 Difference]: Without dead ends: 55 [2020-10-14 23:40:03,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=130, Invalid=992, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 23:40:03,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-14 23:40:03,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2020-10-14 23:40:03,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-14 23:40:03,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2020-10-14 23:40:03,364 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 47 [2020-10-14 23:40:03,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:40:03,365 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2020-10-14 23:40:03,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:40:03,365 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2020-10-14 23:40:03,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 23:40:03,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:40:03,366 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:40:03,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 23:40:03,366 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:40:03,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:40:03,366 INFO L82 PathProgramCache]: Analyzing trace with hash 586195700, now seen corresponding path program 1 times [2020-10-14 23:40:03,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:40:03,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518245215] [2020-10-14 23:40:03,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:40:03,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:03,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:03,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:03,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:03,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:05,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:05,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 23:40:05,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:40:05,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2064 [2020-10-14 23:40:05,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:05,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:05,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:40:05,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:40:05,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 23:40:05,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:05,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:40:05,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:05,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:05,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:05,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:40:05,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:05,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:40:05,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:05,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:05,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:40:05,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:05,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:40:05,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:05,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:40:05,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:05,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:05,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:05,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:05,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:40:05,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:40:05,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 23:40:05,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:05,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:05,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:40:05,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:05,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:40:05,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:05,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 23:40:05,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:05,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:05,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:05,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:40:05,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:05,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 23:40:05,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:05,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:05,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:40:05,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:05,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:40:05,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:05,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:40:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:05,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:05,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:05,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:40:05,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:05,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:40:05,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:05,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:05,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:40:05,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:05,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:40:05,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:05,653 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 23:40:05,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518245215] [2020-10-14 23:40:05,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:40:05,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:40:05,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166845420] [2020-10-14 23:40:05,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:40:05,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:40:05,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:40:05,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:40:05,655 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 9 states. [2020-10-14 23:40:05,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:40:05,921 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2020-10-14 23:40:05,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:40:05,922 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 49 [2020-10-14 23:40:05,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:40:05,922 INFO L225 Difference]: With dead ends: 58 [2020-10-14 23:40:05,922 INFO L226 Difference]: Without dead ends: 55 [2020-10-14 23:40:05,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:40:05,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-14 23:40:05,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2020-10-14 23:40:05,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-14 23:40:05,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2020-10-14 23:40:05,930 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 49 [2020-10-14 23:40:05,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:40:05,931 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2020-10-14 23:40:05,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:40:05,931 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2020-10-14 23:40:05,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 23:40:05,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:40:05,931 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:40:05,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 23:40:05,932 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:40:05,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:40:05,932 INFO L82 PathProgramCache]: Analyzing trace with hash 586197374, now seen corresponding path program 1 times [2020-10-14 23:40:05,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:40:05,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015731198] [2020-10-14 23:40:05,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:40:05,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:06,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:06,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:09,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:09,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 23:40:09,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:40:09,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4012 [2020-10-14 23:40:09,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:09,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:09,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-14 23:40:09,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:40:09,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 23:40:09,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:10,217 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 42 [2020-10-14 23:40:10,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:40:10,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:10,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:10,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:10,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:40:10,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:10,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:40:10,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:10,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:10,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:40:10,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:10,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:40:10,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:10,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:40:10,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:10,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:10,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:10,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:10,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:40:10,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:40:10,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-14 23:40:10,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:10,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:10,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:40:10,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:10,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:40:10,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:11,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 23:40:11,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:11,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:11,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:11,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:40:11,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:11,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-14 23:40:11,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:11,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:11,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:40:11,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:40:11,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:40:11,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:40:12,410 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2020-10-14 23:40:13,199 WARN L193 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 102 [2020-10-14 23:40:13,980 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 102 [2020-10-14 23:40:14,381 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 74 [2020-10-14 23:40:14,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:40:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:14,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:14,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:14,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:40:14,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:14,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 23:40:14,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:14,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:14,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:40:14,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:40:14,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:40:14,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:14,759 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:40:14,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015731198] [2020-10-14 23:40:14,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:40:14,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-14 23:40:14,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725910289] [2020-10-14 23:40:14,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-14 23:40:14,761 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:40:14,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-14 23:40:14,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=868, Unknown=0, NotChecked=0, Total=930 [2020-10-14 23:40:14,762 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand 31 states. [2020-10-14 23:40:16,413 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-14 23:40:18,312 WARN L193 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 92 [2020-10-14 23:40:19,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:40:19,721 INFO L93 Difference]: Finished difference Result 80 states and 84 transitions. [2020-10-14 23:40:19,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-14 23:40:19,722 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 49 [2020-10-14 23:40:19,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:40:19,723 INFO L225 Difference]: With dead ends: 80 [2020-10-14 23:40:19,724 INFO L226 Difference]: Without dead ends: 61 [2020-10-14 23:40:19,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=165, Invalid=2187, Unknown=0, NotChecked=0, Total=2352 [2020-10-14 23:40:19,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-14 23:40:19,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 57. [2020-10-14 23:40:19,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-14 23:40:19,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2020-10-14 23:40:19,735 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 49 [2020-10-14 23:40:19,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:40:19,735 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2020-10-14 23:40:19,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-14 23:40:19,735 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2020-10-14 23:40:19,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 23:40:19,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:40:19,736 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] [2020-10-14 23:40:19,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 23:40:19,737 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:40:19,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:40:19,737 INFO L82 PathProgramCache]: Analyzing trace with hash -999880514, now seen corresponding path program 2 times [2020-10-14 23:40:19,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:40:19,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515446365] [2020-10-14 23:40:19,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:40:19,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:19,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:19,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:24,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:24,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 23:40:24,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:40:24,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 23:40:24,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:24,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:24,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-14 23:40:24,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:40:24,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 23:40:24,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:25,066 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 48 [2020-10-14 23:40:25,223 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-10-14 23:40:25,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:40:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:25,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:25,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:25,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:40:25,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:25,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:40:25,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:25,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:25,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:40:25,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:25,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:40:25,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:25,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:40:25,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:25,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:25,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:25,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:40:25,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:25,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-14 23:40:25,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:25,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:25,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:40:25,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:40:25,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 23:40:25,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:40:26,789 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2020-10-14 23:40:27,003 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2020-10-14 23:40:27,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 23:40:27,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:27,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:27,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:27,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:40:27,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:27,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 512 [2020-10-14 23:40:27,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:27,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:27,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:40:27,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:40:27,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:40:27,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 23:40:29,169 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 45 [2020-10-14 23:40:29,946 WARN L193 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 72 [2020-10-14 23:40:34,996 WARN L193 SmtUtils]: Spent 4.45 s on a formula simplification. DAG size of input: 251 DAG size of output: 142 [2020-10-14 23:40:39,972 WARN L193 SmtUtils]: Spent 4.16 s on a formula simplification. DAG size of input: 240 DAG size of output: 155 [2020-10-14 23:40:45,786 WARN L193 SmtUtils]: Spent 2.79 s on a formula simplification. DAG size of input: 269 DAG size of output: 166 [2020-10-14 23:40:48,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:40:48,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:48,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:48,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:40:48,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:40:48,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:40:48,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 23:40:48,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:40:48,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:40:48,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:40:48,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:40:48,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:40:48,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:40:49,604 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 40 [2020-10-14 23:40:49,646 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:40:49,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1515446365] [2020-10-14 23:40:49,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:40:49,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-14 23:40:49,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026679817] [2020-10-14 23:40:49,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-14 23:40:49,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:40:49,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-14 23:40:49,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=1111, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 23:40:49,649 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 35 states. [2020-10-14 23:40:52,293 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 62 [2020-10-14 23:40:52,902 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2020-10-14 23:40:53,266 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-10-14 23:40:53,857 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 116 [2020-10-14 23:40:54,645 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 74 [2020-10-14 23:40:59,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:40:59,002 INFO L93 Difference]: Finished difference Result 66 states and 67 transitions. [2020-10-14 23:40:59,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 23:40:59,003 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 54 [2020-10-14 23:40:59,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:40:59,004 INFO L225 Difference]: With dead ends: 66 [2020-10-14 23:40:59,004 INFO L226 Difference]: Without dead ends: 64 [2020-10-14 23:40:59,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 26.9s TimeCoverageRelationStatistics Valid=243, Invalid=2727, Unknown=0, NotChecked=0, Total=2970 [2020-10-14 23:40:59,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-14 23:40:59,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2020-10-14 23:40:59,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-14 23:40:59,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2020-10-14 23:40:59,017 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 54 [2020-10-14 23:40:59,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:40:59,017 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2020-10-14 23:40:59,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-14 23:40:59,017 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2020-10-14 23:40:59,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 23:40:59,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:40:59,021 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 23:40:59,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 23:40:59,022 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:40:59,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:40:59,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1187546319, now seen corresponding path program 2 times [2020-10-14 23:40:59,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:40:59,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1496721967] [2020-10-14 23:40:59,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:40:59,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:40:59,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:59,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:40:59,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:00,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:01,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:04,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:04,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 23:41:04,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:41:04,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 23:41:04,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:04,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:04,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:41:04,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 23:41:04,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 23:41:04,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:04,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:41:04,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:04,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:04,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:04,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:41:04,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:04,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:41:04,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:04,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:04,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:41:04,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:04,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:41:04,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:41:04,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:41:04,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:04,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:04,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:04,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:41:04,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:04,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-14 23:41:04,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:04,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:04,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:41:04,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:04,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 23:41:04,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:41:04,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 23:41:04,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:04,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:04,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:04,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:41:04,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:04,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 23:41:04,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:04,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:04,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:41:04,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:04,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:41:04,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:04,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:41:04,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:04,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:04,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:04,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:41:04,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:04,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:41:04,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:04,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:04,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:41:04,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:04,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:41:04,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:04,726 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:41:04,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1496721967] [2020-10-14 23:41:04,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:41:04,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:41:04,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165559278] [2020-10-14 23:41:04,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:41:04,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:41:04,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:41:04,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:41:04,728 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 16 states. [2020-10-14 23:41:05,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:41:05,450 INFO L93 Difference]: Finished difference Result 94 states and 99 transitions. [2020-10-14 23:41:05,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 23:41:05,451 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 56 [2020-10-14 23:41:05,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:41:05,452 INFO L225 Difference]: With dead ends: 94 [2020-10-14 23:41:05,452 INFO L226 Difference]: Without dead ends: 91 [2020-10-14 23:41:05,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2020-10-14 23:41:05,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-14 23:41:05,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 79. [2020-10-14 23:41:05,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-14 23:41:05,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-14 23:41:05,468 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 56 [2020-10-14 23:41:05,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:41:05,468 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-14 23:41:05,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:41:05,468 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-14 23:41:05,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 23:41:05,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:41:05,470 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-14 23:41:05,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 23:41:05,470 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:41:05,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:41:05,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1187547993, now seen corresponding path program 3 times [2020-10-14 23:41:05,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:41:05,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965144274] [2020-10-14 23:41:05,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:41:05,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:05,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:05,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:08,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:10,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:10,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 23:41:10,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:41:10,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 23:41:10,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:10,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:10,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-14 23:41:10,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:41:10,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 23:41:10,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:10,696 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-10-14 23:41:10,819 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-10-14 23:41:11,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:41:11,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:11,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:11,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:11,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:41:11,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:11,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:41:11,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:11,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:11,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:41:11,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:11,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:41:11,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:11,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:41:11,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:11,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:11,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:12,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:12,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:41:12,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:41:12,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 621 [2020-10-14 23:41:12,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:12,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:12,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:41:12,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:12,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 23:41:12,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:13,186 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 42 [2020-10-14 23:41:13,489 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2020-10-14 23:41:13,691 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 43 [2020-10-14 23:41:14,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 23:41:14,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:14,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:14,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:14,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:41:14,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:14,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-10-14 23:41:14,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:14,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:14,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:41:14,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:41:14,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:41:14,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:14,957 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 36 [2020-10-14 23:41:15,365 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 49 [2020-10-14 23:41:16,504 WARN L193 SmtUtils]: Spent 807.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 98 [2020-10-14 23:41:17,442 WARN L193 SmtUtils]: Spent 550.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 94 [2020-10-14 23:41:19,212 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 137 DAG size of output: 133 [2020-10-14 23:41:19,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:41:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:19,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:19,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:19,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:41:19,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:19,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 23:41:19,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:19,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:19,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:41:19,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:41:19,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:41:19,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:20,359 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 11 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:41:20,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965144274] [2020-10-14 23:41:20,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:41:20,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-14 23:41:20,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081677252] [2020-10-14 23:41:20,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-14 23:41:20,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:41:20,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-14 23:41:20,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1240, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 23:41:20,362 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 37 states. [2020-10-14 23:41:23,096 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-14 23:41:25,284 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-14 23:41:25,595 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-14 23:41:25,908 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-14 23:41:26,317 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-14 23:41:26,645 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-14 23:41:26,945 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-14 23:41:27,258 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-14 23:41:27,524 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-14 23:41:27,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:41:27,755 INFO L93 Difference]: Finished difference Result 88 states and 92 transitions. [2020-10-14 23:41:27,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-14 23:41:27,756 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 56 [2020-10-14 23:41:27,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:41:27,757 INFO L225 Difference]: With dead ends: 88 [2020-10-14 23:41:27,757 INFO L226 Difference]: Without dead ends: 67 [2020-10-14 23:41:27,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=205, Invalid=2765, Unknown=0, NotChecked=0, Total=2970 [2020-10-14 23:41:27,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-14 23:41:27,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2020-10-14 23:41:27,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-14 23:41:27,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2020-10-14 23:41:27,771 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 56 [2020-10-14 23:41:27,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:41:27,771 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2020-10-14 23:41:27,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-14 23:41:27,771 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2020-10-14 23:41:27,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 23:41:27,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:41:27,772 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2020-10-14 23:41:27,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 23:41:27,773 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:41:27,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:41:27,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1132167793, now seen corresponding path program 3 times [2020-10-14 23:41:27,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:41:27,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1039721065] [2020-10-14 23:41:27,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:41:27,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:27,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:27,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:27,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:28,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:29,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:32,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:32,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 23:41:32,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:41:32,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 23:41:32,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:32,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:32,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:41:32,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 23:41:32,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 23:41:32,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:32,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:41:32,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:32,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:32,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:32,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:41:32,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:32,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:41:32,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:32,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:32,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:41:32,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:32,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:41:32,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:32,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:41:32,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:32,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:32,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:32,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 23:41:32,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:32,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 23:41:32,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:32,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:32,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:41:32,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:32,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 23:41:32,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:33,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 23:41:33,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:33,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:33,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:33,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:41:33,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:33,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 23:41:33,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:33,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:33,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:41:33,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:41:33,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:41:33,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:33,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:41:33,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:41:33,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:41:33,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:41:33,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:41:33,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:41:33,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:41:33,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:41:33,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:41:33,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:41:33,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:41:33,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:41:33,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:41:33,213 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 7 proven. 28 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 23:41:33,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1039721065] [2020-10-14 23:41:33,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:41:33,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:41:33,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813055935] [2020-10-14 23:41:33,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:41:33,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:41:33,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:41:33,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:41:33,216 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand 14 states. [2020-10-14 23:41:33,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:41:33,694 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2020-10-14 23:41:33,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:41:33,695 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 61 [2020-10-14 23:41:33,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:41:33,696 INFO L225 Difference]: With dead ends: 63 [2020-10-14 23:41:33,696 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 23:41:33,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:41:33,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 23:41:33,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 23:41:33,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 23:41:33,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 23:41:33,698 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2020-10-14 23:41:33,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:41:33,698 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 23:41:33,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:41:33,698 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 23:41:33,698 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 23:41:33,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 23:41:33,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 23:41:33,893 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 136 [2020-10-14 23:41:34,295 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 401 DAG size of output: 380 [2020-10-14 23:41:34,597 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 466 DAG size of output: 430 [2020-10-14 23:41:34,802 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 465 DAG size of output: 429 [2020-10-14 23:41:34,918 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 251 DAG size of output: 241 [2020-10-14 23:41:35,052 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 284 DAG size of output: 272 [2020-10-14 23:41:35,735 WARN L193 SmtUtils]: Spent 675.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 69 [2020-10-14 23:41:35,962 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 63 [2020-10-14 23:41:38,121 WARN L193 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 192 DAG size of output: 155 [2020-10-14 23:42:14,114 WARN L193 SmtUtils]: Spent 35.86 s on a formula simplification. DAG size of input: 468 DAG size of output: 301 [2020-10-14 23:42:15,892 WARN L193 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 239 DAG size of output: 139 [2020-10-14 23:42:17,904 WARN L193 SmtUtils]: Spent 1.98 s on a formula simplification. DAG size of input: 268 DAG size of output: 165 [2020-10-14 23:42:17,912 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-14 23:42:17,912 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-14 23:42:17,912 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-14 23:42:17,912 INFO L271 CegarLoopResult]: At program point myexitENTRY(lines 561 563) the Hoare annotation is: true [2020-10-14 23:42:17,913 INFO L268 CegarLoopResult]: For program point myexitEXIT(lines 561 563) no Hoare annotation was computed. [2020-10-14 23:42:17,913 INFO L271 CegarLoopResult]: At program point L562(line 562) the Hoare annotation is: true [2020-10-14 23:42:17,913 INFO L268 CegarLoopResult]: For program point L578-1(lines 578 580) no Hoare annotation was computed. [2020-10-14 23:42:17,913 INFO L264 CegarLoopResult]: At program point dll_createENTRY(lines 574 591) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|)) [2020-10-14 23:42:17,914 INFO L264 CegarLoopResult]: At program point L576-2(lines 576 589) the Hoare annotation is: (let ((.cse44 (select |#memory_$Pointer$.base| dll_create_~head~0.base)) (.cse53 (+ dll_create_~new_head~0.offset 4))) (let ((.cse37 (select (select |#memory_$Pointer$.base| dll_create_~new_head~0.base) .cse53)) (.cse48 (select |#memory_$Pointer$.offset| dll_create_~new_head~0.base)) (.cse47 (select |#memory_$Pointer$.offset| dll_create_~head~0.base)) (.cse34 (select .cse44 4))) (let ((.cse29 (= .cse34 0)) (.cse32 (= (select .cse47 4) 0)) (.cse45 (+ dll_create_~head~0.offset 4)) (.cse49 (select |#valid| dll_create_~new_head~0.base)) (.cse15 (select (select |#memory_$Pointer$.base| .cse34) 4)) (.cse30 (select (select |#memory_int| dll_create_~head~0.base) 0)) (.cse43 (select .cse48 .cse53)) (.cse42 (+ dll_create_~len 3)) (.cse46 (select |#valid| dll_create_~head~0.base)) (.cse50 (select (select |#memory_int| dll_create_~new_head~0.base) dll_create_~new_head~0.offset)) (.cse26 (select (select |#memory_$Pointer$.base| .cse37) 4)) (.cse52 (+ dll_create_~new_head~0.base 1)) (.cse51 (+ dll_create_~head~0.base 1)) (.cse28 (= .cse37 0))) (let ((.cse14 (= dll_create_~head~0.offset 0)) (.cse0 (= 0 (select (select |#memory_$Pointer$.offset| .cse37) 4))) (.cse1 (not .cse28)) (.cse2 (= 0 (select .cse47 (+ dll_create_~head~0.offset 8)))) (.cse3 (<= .cse51 |#StackHeapBarrier|)) (.cse5 (<= .cse52 |#StackHeapBarrier|)) (.cse4 (= (select (select |#memory_$Pointer$.offset| .cse34) 4) 0)) (.cse33 (= .cse50 (select (select |#memory_int| .cse26) 0))) (.cse35 (<= dll_create_~head~0.offset 0)) (.cse7 (or (<= 1 dll_create_~new_head~0.base) (<= .cse52 0))) (.cse8 (= .cse46 1)) (.cse9 (or (<= 1 dll_create_~head~0.base) (<= .cse51 0))) (.cse10 (= (select (select |#memory_int| .cse34) 0) dll_create_~data)) (.cse11 (= .cse50 dll_create_~data)) (.cse12 (<= (+ .cse37 1) |#StackHeapBarrier|)) (.cse13 (= |dll_create_#in~data| dll_create_~data)) (.cse36 (<= 0 dll_create_~head~0.offset)) (.cse16 (= dll_create_~new_head~0.offset 0)) (.cse38 (<= .cse42 |dll_create_#in~len|)) (.cse17 (= (select (select |#memory_int| .cse37) .cse43) .cse50)) (.cse39 (= (select (select |#memory_int| .cse15) 0) .cse30)) (.cse18 (= (select |#valid| .cse37) .cse49)) (.cse19 (= .cse49 1)) (.cse40 (= (select |#valid| .cse15) 1)) (.cse20 (= (select .cse48 (+ dll_create_~new_head~0.offset 8)) 0)) (.cse41 (= (select |#valid| .cse26) 1)) (.cse21 (<= (+ .cse34 1) |#StackHeapBarrier|)) (.cse22 (= (select .cse47 .cse45) 0)) (.cse23 (= (select |#valid| (select .cse44 .cse45)) .cse46)) (.cse24 (= |dll_create_#in~data| .cse30)) (.cse25 (or (not .cse29) (not .cse32))) (.cse27 (= .cse43 0))) (or (let ((.cse6 (+ dll_create_~len 2))) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (<= .cse6 |dll_create_#in~len|) .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 (= .cse15 0) .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24 .cse25 (<= |dll_create_#in~len| .cse6) (= .cse26 0) .cse27)) (let ((.cse31 (+ dll_create_~len 1))) (and .cse28 .cse11 .cse13 .cse14 .cse2 .cse3 .cse5 .cse16 .cse29 (= .cse30 dll_create_~data) (<= |dll_create_#in~len| .cse31) .cse19 .cse20 .cse32 .cse7 .cse8 .cse27 (<= .cse31 |dll_create_#in~len|) (<= 1 |dll_create_#in~len|) .cse9)) (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) .cse13 (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= dll_create_~len |dll_create_#in~len|) .cse14 (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|) (= 0 dll_create_~head~0.base)) (and .cse0 .cse1 .cse2 .cse3 .cse5 .cse4 .cse33 (not (= .cse34 .cse15)) .cse35 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse36 (not (= .cse37 .cse26)) .cse16 .cse38 (<= 4 |dll_create_#in~len|) .cse17 .cse39 .cse18 .cse19 .cse40 .cse20 .cse41 .cse21 .cse22 .cse23 .cse24 .cse25 .cse27) (and .cse0 (= (select (select |#memory_$Pointer$.offset| .cse26) 4) 0) .cse1 .cse2 .cse3 .cse5 .cse4 (= (select (select |#memory_$Pointer$.base| .cse26) 4) 0) .cse33 (= (select (select |#memory_$Pointer$.offset| .cse15) 4) 0) (= (select (select |#memory_$Pointer$.base| .cse15) 4) 0) .cse35 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 (<= |dll_create_#in~len| .cse42) .cse13 (<= 3 |dll_create_#in~len|) .cse36 .cse16 .cse38 .cse17 .cse39 .cse18 .cse19 .cse40 .cse20 .cse41 .cse21 .cse22 .cse23 .cse24 .cse25 .cse27)))))) [2020-10-14 23:42:17,915 INFO L268 CegarLoopResult]: For program point L576-3(lines 576 589) no Hoare annotation was computed. [2020-10-14 23:42:17,915 INFO L268 CegarLoopResult]: For program point dll_createFINAL(lines 574 591) no Hoare annotation was computed. [2020-10-14 23:42:17,915 INFO L271 CegarLoopResult]: At program point L579(line 579) the Hoare annotation is: true [2020-10-14 23:42:17,915 INFO L268 CegarLoopResult]: For program point dll_createEXIT(lines 574 591) no Hoare annotation was computed. [2020-10-14 23:42:17,915 INFO L268 CegarLoopResult]: For program point L584(lines 584 586) no Hoare annotation was computed. [2020-10-14 23:42:17,915 INFO L268 CegarLoopResult]: For program point L584-2(lines 584 586) no Hoare annotation was computed. [2020-10-14 23:42:17,915 INFO L268 CegarLoopResult]: For program point L578(lines 578 580) no Hoare annotation was computed. [2020-10-14 23:42:17,915 INFO L268 CegarLoopResult]: For program point __bswap_32ENTRY(lines 63 67) no Hoare annotation was computed. [2020-10-14 23:42:17,916 INFO L268 CegarLoopResult]: For program point __bswap_32FINAL(lines 63 67) no Hoare annotation was computed. [2020-10-14 23:42:17,916 INFO L268 CegarLoopResult]: For program point __bswap_32EXIT(lines 63 67) no Hoare annotation was computed. [2020-10-14 23:42:17,916 INFO L268 CegarLoopResult]: For program point __bswap_64ENTRY(lines 68 72) no Hoare annotation was computed. [2020-10-14 23:42:17,916 INFO L268 CegarLoopResult]: For program point __bswap_64FINAL(lines 68 72) no Hoare annotation was computed. [2020-10-14 23:42:17,916 INFO L268 CegarLoopResult]: For program point __bswap_64EXIT(lines 68 72) no Hoare annotation was computed. [2020-10-14 23:42:17,916 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-14 23:42:17,916 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-14 23:42:17,916 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-14 23:42:17,917 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-14 23:42:17,917 INFO L264 CegarLoopResult]: At program point dll_insertENTRY(lines 599 622) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|)) [2020-10-14 23:42:17,918 INFO L264 CegarLoopResult]: At program point L603-2(lines 603 607) the Hoare annotation is: (let ((.cse9 (select (select |old(#memory_$Pointer$.base)| |dll_insert_#in~head.base|) |dll_insert_#in~head.offset|))) (let ((.cse43 (= |dll_insert_#in~head.base| dll_insert_~last~0.base)) (.cse51 (= dll_insert_~last~0.offset 0)) (.cse11 (select (select |old(#memory_$Pointer$.base)| .cse9) 4)) (.cse66 (+ dll_insert_~new_node~0.offset 4)) (.cse68 (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) (.cse71 (@diff |old(#memory_int)| |#memory_int|)) (.cse69 (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (.cse70 (@diff |old(#memory_$Pointer$.offset)| |#memory_$Pointer$.offset|)) (.cse67 (@diff |old(#memory_$Pointer$.base)| |#memory_$Pointer$.base|))) (let ((.cse10 (select (select |#memory_$Pointer$.base| |dll_insert_#in~head.base|) |dll_insert_#in~head.offset|)) (.cse25 (= (select |old(#valid)| dll_insert_~new_node~0.base) 0)) (.cse24 (select |#memory_$Pointer$.base| dll_insert_~last~0.base)) (.cse1 (= |#memory_$Pointer$.base| (store |old(#memory_$Pointer$.base)| .cse67 (select |#memory_$Pointer$.base| .cse67)))) (.cse8 (or .cse69 (<= (+ .cse70 1) |#StackHeapBarrier|))) (.cse22 (= |dll_insert_#in~data| (select (select |#memory_int| dll_insert_~new_node~0.base) 0))) (.cse26 (or (= |#memory_int| |old(#memory_int)|) (= .cse71 dll_insert_~new_node~0.base))) (.cse28 (= (store |old(#memory_int)| .cse71 (select |#memory_int| .cse71)) |#memory_int|)) (.cse0 (or (<= (+ .cse67 1) |#StackHeapBarrier|) .cse68)) (.cse3 (+ dll_insert_~index 1)) (.cse4 (= |dll_insert_#in~head.base| dll_insert_~head.base)) (.cse29 (or .cse69 (= (select |old(#valid)| .cse70) 0))) (.cse5 (<= (+ dll_insert_~new_node~0.base 1) |#StackHeapBarrier|)) (.cse6 (= |#memory_$Pointer$.offset| (store |old(#memory_$Pointer$.offset)| .cse70 (select |#memory_$Pointer$.offset| .cse70)))) (.cse30 (or (= (select |old(#valid)| .cse67) 0) .cse68)) (.cse7 (= dll_insert_~head.offset |dll_insert_#in~head.offset|)) (.cse20 (= .cse66 |dll_insert_#in~head.offset|)) (.cse21 (= |dll_insert_#in~head.base| dll_insert_~new_node~0.base)) (.cse12 (= |dll_insert_#in~head.base| .cse11)) (.cse17 (and (or (= dll_insert_~new_node~0.base .cse67) .cse68) (or .cse69 (= dll_insert_~new_node~0.base .cse70)))) (.cse18 (not .cse51)) (.cse15 (= (select |old(#valid)| .cse9) 0)) (.cse13 (<= (+ |dll_insert_#in~head.base| 1) |#StackHeapBarrier|)) (.cse14 (= |dll_insert_#in~head.base| .cse9)) (.cse16 (not (= (select (select |old(#memory_$Pointer$.offset)| |dll_insert_#in~head.base|) |dll_insert_#in~head.offset|) 0))) (.cse2 (not (= dll_insert_~new_node~0.base 0))) (.cse27 (= 0 dll_insert_~new_node~0.offset)) (.cse23 (not .cse43)) (.cse19 (+ dll_insert_~new_node~0.offset 8))) (or (and .cse0 .cse1 .cse2 (<= 2 |dll_insert_#in~index|) (<= .cse3 |dll_insert_#in~index|) .cse4 .cse5 .cse6 .cse7 .cse8 (or (= (select (select |old(#memory_int)| .cse9) 0) (select (select |#memory_int| .cse10) 0)) (= .cse11 .cse9) .cse12 .cse13 .cse14 .cse15 .cse16)) (and (= |dll_insert_#in~index| dll_insert_~index) .cse1 (or .cse13 .cse17 .cse18) .cse8 .cse0 (or (and (or (= .cse19 |dll_insert_#in~head.offset|) .cse20) .cse21) (and (= (select (select |#memory_$Pointer$.offset| |dll_insert_#in~head.base|) |dll_insert_#in~head.offset|) dll_insert_~last~0.offset) (= dll_insert_~last~0.base .cse10))) (or .cse13 .cse22 .cse18) .cse2 .cse4 (or .cse23 (= (select .cse24 |dll_insert_#in~head.offset|) dll_insert_~last~0.base)) (or (and .cse25 .cse26 .cse27 .cse28) .cse13) .cse29 .cse5 .cse6 .cse30 .cse7) (let ((.cse41 (select |#memory_$Pointer$.offset| dll_insert_~snd_to_last~0.base)) (.cse46 (+ dll_insert_~snd_to_last~0.offset 4))) (let ((.cse49 (select |#memory_$Pointer$.base| dll_insert_~snd_to_last~0.base)) (.cse44 (store |#memory_$Pointer$.offset| dll_insert_~snd_to_last~0.base (store .cse41 .cse46 dll_insert_~new_node~0.offset)))) (let ((.cse59 (store (store (select .cse44 dll_insert_~new_node~0.base) .cse19 dll_insert_~snd_to_last~0.offset) .cse66 dll_insert_~last~0.offset)) (.cse60 (store .cse49 .cse46 dll_insert_~new_node~0.base))) (let ((.cse62 (let ((.cse65 (store |#memory_$Pointer$.base| dll_insert_~snd_to_last~0.base .cse60))) (store .cse65 dll_insert_~new_node~0.base (store (store (select .cse65 dll_insert_~new_node~0.base) .cse19 dll_insert_~snd_to_last~0.base) .cse66 dll_insert_~last~0.base)))) (.cse61 (= dll_insert_~snd_to_last~0.base 0)) (.cse64 (store .cse44 dll_insert_~new_node~0.base .cse59))) (let ((.cse34 (= dll_insert_~snd_to_last~0.base dll_insert_~last~0.base)) (.cse54 (select (select .cse64 dll_insert_~last~0.base) |dll_insert_#in~head.offset|)) (.cse63 (= |dll_insert_#in~head.offset| (+ dll_insert_~last~0.offset 8))) (.cse52 (not .cse61)) (.cse47 (select (select .cse64 |dll_insert_#in~head.base|) |dll_insert_#in~head.offset|)) (.cse35 (= dll_insert_~new_node~0.base dll_insert_~last~0.base)) (.cse38 (= dll_insert_~snd_to_last~0.offset 0)) (.cse50 (select (select .cse62 |dll_insert_#in~head.base|) |dll_insert_#in~head.offset|)) (.cse32 (select .cse49 4))) (let ((.cse36 (= .cse32 |dll_insert_#in~head.base|)) (.cse42 (= (select |old(#valid)| .cse50) 0)) (.cse37 (= dll_insert_~snd_to_last~0.base dll_insert_~new_node~0.base)) (.cse53 (= .cse46 |dll_insert_#in~head.offset|)) (.cse31 (not .cse38)) (.cse33 (not .cse35)) (.cse55 (and .cse23 (or (= dll_insert_~snd_to_last~0.base .cse50) .cse61) (or .cse38 .cse52 (= dll_insert_~snd_to_last~0.offset .cse47)))) (.cse56 (and .cse63 (or .cse2 (not .cse27)) .cse43)) (.cse57 (and (or .cse61 (= (select (select .cse62 dll_insert_~last~0.base) |dll_insert_#in~head.offset|) dll_insert_~snd_to_last~0.base)) (not .cse63) .cse43 (or .cse38 (= dll_insert_~snd_to_last~0.offset .cse54) .cse52))) (.cse58 (= dll_insert_~last~0.base (select .cse60 |dll_insert_#in~head.offset|))) (.cse48 (not .cse34))) (and (or .cse31 .cse13 (and .cse25 (or (and (or (= .cse32 dll_insert_~new_node~0.base) .cse33) (or (and (= (select |old(#memory_$Pointer$.offset)| dll_insert_~last~0.base) (select |#memory_$Pointer$.offset| dll_insert_~last~0.base)) (= .cse24 (select |old(#memory_$Pointer$.base)| dll_insert_~last~0.base))) .cse34 .cse35 .cse18)) .cse36 .cse14 .cse37))) (or (let ((.cse40 (= |dll_insert_#in~head.base| dll_insert_~snd_to_last~0.base)) (.cse39 (select (select .cse44 |dll_insert_#in~head.base|) |dll_insert_#in~head.offset|))) (and (or .cse38 (and (or (= dll_insert_~snd_to_last~0.offset .cse39) .cse40) (or (not .cse40) (= (select .cse41 |dll_insert_#in~head.offset|) dll_insert_~snd_to_last~0.offset)))) (or .cse40 .cse31 (and (or .cse34 (and (or (= .cse39 0) .cse42) (or .cse33 (= (select |old(#valid)| .cse32) 0)))) .cse23) (and .cse36 .cse43)))) .cse13) .cse1 (<= 1 |dll_insert_#in~index|) .cse8 (or .cse13 .cse14 .cse15 .cse22 .cse16) (or .cse31 (let ((.cse45 (select .cse49 .cse46))) (and (or .cse34 .cse14 (and (or (and (= dll_insert_~last~0.base .cse45) (= (select |old(#memory_int)| dll_insert_~last~0.base) (select |#memory_int| dll_insert_~last~0.base)) (= (select .cse41 .cse46) dll_insert_~last~0.offset)) .cse35) (= .cse47 0)) (= |dll_insert_#in~head.base| .cse45)) (or (= .cse9 .cse45) .cse48))) .cse13 .cse37) (or (and .cse26 .cse28) .cse34 .cse31 (= |dll_insert_#in~head.base| (select (select |old(#memory_$Pointer$.base)| .cse50) 4)) .cse13 .cse35 .cse14 .cse42 .cse18) .cse0 (= |dll_insert_#in~index| .cse3) .cse2 (or .cse51 (and (or .cse52 (and (or .cse53 (= dll_insert_~last~0.offset .cse54)) (not (= (+ dll_insert_~last~0.offset 4) dll_insert_~snd_to_last~0.offset)))) .cse34) .cse55 .cse56 .cse57 (and (or (and .cse37 (not .cse58)) .cse20) .cse21)) .cse4 (or (= dll_insert_~last~0.offset (select (select |old(#memory_$Pointer$.offset)| .cse9) 4)) .cse13 .cse15 .cse16) .cse29 .cse5 .cse6 .cse30 .cse7 (or (and .cse53 .cse34 (= dll_insert_~snd_to_last~0.offset dll_insert_~last~0.offset) .cse43) (and .cse35 .cse43 .cse20) (and (or (and .cse31 (= (select .cse59 |dll_insert_#in~head.offset|) dll_insert_~snd_to_last~0.offset)) .cse20) .cse33 .cse21) .cse55 .cse56 .cse57 (and .cse34 .cse58 .cse43)) (or (and (or .cse34 .cse12 .cse17 .cse14 .cse35 .cse18) (= .cse11 dll_insert_~last~0.base)) .cse13 .cse15 .cse16) (or .cse13 (and (or (and (or (= (select |old(#valid)| dll_insert_~snd_to_last~0.base) 0) (= (select |old(#memory_int)| dll_insert_~snd_to_last~0.base) (select |#memory_int| dll_insert_~snd_to_last~0.base))) (or (= .cse32 .cse9) .cse48)) .cse14 .cse16) .cse27 (= dll_insert_~snd_to_last~0.base .cse9)))))))))))))) [2020-10-14 23:42:17,918 INFO L268 CegarLoopResult]: For program point L603-3(lines 599 622) no Hoare annotation was computed. [2020-10-14 23:42:17,918 INFO L268 CegarLoopResult]: For program point L612(lines 612 614) no Hoare annotation was computed. [2020-10-14 23:42:17,918 INFO L268 CegarLoopResult]: For program point L608(lines 599 622) no Hoare annotation was computed. [2020-10-14 23:42:17,919 INFO L268 CegarLoopResult]: For program point dll_insertEXIT(lines 599 622) no Hoare annotation was computed. [2020-10-14 23:42:17,919 INFO L264 CegarLoopResult]: At program point L600(line 600) the Hoare annotation is: (and (= |dll_insert_#in~index| dll_insert_~index) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |dll_insert_#in~head.base| dll_insert_~head.base) (= dll_insert_~head.offset |dll_insert_#in~head.offset|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|) (= |dll_insert_#in~data| dll_insert_~data)) [2020-10-14 23:42:17,919 INFO L268 CegarLoopResult]: For program point L600-1(line 600) no Hoare annotation was computed. [2020-10-14 23:42:17,919 INFO L268 CegarLoopResult]: For program point L617(lines 617 619) no Hoare annotation was computed. [2020-10-14 23:42:17,919 INFO L268 CegarLoopResult]: For program point L617-2(lines 617 619) no Hoare annotation was computed. [2020-10-14 23:42:17,919 INFO L268 CegarLoopResult]: For program point L640(lines 640 642) no Hoare annotation was computed. [2020-10-14 23:42:17,919 INFO L268 CegarLoopResult]: For program point L634(lines 634 636) no Hoare annotation was computed. [2020-10-14 23:42:17,919 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 623 660) no Hoare annotation was computed. [2020-10-14 23:42:17,920 INFO L264 CegarLoopResult]: At program point L632-2(lines 632 639) the Hoare annotation is: (let ((.cse30 (select (select |#memory_$Pointer$.base| |main_~#s~0.base|) |main_~#s~0.offset|))) (let ((.cse47 (select |#memory_$Pointer$.base| .cse30))) (let ((.cse49 (+ main_~ptr~0.offset 4)) (.cse48 (select .cse47 4))) (let ((.cse45 (select |#memory_int| .cse30)) (.cse40 (select (select |#memory_$Pointer$.offset| |main_~#s~0.base|) |main_~#s~0.offset|)) (.cse43 (select |#memory_$Pointer$.offset| .cse48)) (.cse41 (select |#memory_$Pointer$.base| .cse48)) (.cse44 (select (select |#memory_$Pointer$.offset| .cse30) 4)) (.cse33 (select (select |#memory_$Pointer$.offset| main_~ptr~0.base) .cse49)) (.cse22 (select (select |#memory_$Pointer$.base| main_~ptr~0.base) .cse49))) (let ((.cse34 (select |#memory_$Pointer$.base| .cse22)) (.cse35 (select |#memory_$Pointer$.offset| .cse22)) (.cse37 (+ .cse33 4)) (.cse36 (select (select |#memory_int| .cse48) .cse44)) (.cse6 (= .cse44 0)) (.cse38 (select .cse41 4)) (.cse39 (+ (select .cse43 4) 4)) (.cse32 (select .cse45 .cse40))) (let ((.cse3 (= main_~ptr~0.offset 0)) (.cse5 (= .cse32 (let ((.cse46 (select .cse47 (+ .cse40 4)))) (select (select |#memory_int| (select (select |#memory_$Pointer$.base| .cse46) 4)) (select (select |#memory_$Pointer$.offset| .cse46) 4))))) (.cse7 (= (select (select |#memory_$Pointer$.base| .cse38) .cse39) 0)) (.cse10 (= |main_~#s~0.offset| 0)) (.cse11 (let ((.cse42 (+ .cse44 4))) (or (not (= (select .cse41 .cse42) 0)) (and (not (= (select .cse43 .cse42) .cse44)) .cse6) (not (= main_~data~0 (select .cse45 0))) (= main_~mid_index~0 0)))) (.cse13 (<= .cse36 main_~uneq~0)) (.cse12 (<= (+ |#StackHeapBarrier| 1) |main_~#s~0.base|)) (.cse0 (select (select |#memory_int| main_~ptr~0.base) main_~ptr~0.offset)) (.cse15 (<= main_~len~0 2)) (.cse17 (= .cse40 0)) (.cse18 (= main_~data~0 1)) (.cse21 (= .cse33 0)) (.cse19 (not (= |main_~#s~0.base| 0))) (.cse20 (= (select (select |#memory_$Pointer$.offset| .cse38) .cse39) 0)) (.cse14 (select (select |#memory_int| .cse22) .cse33)) (.cse23 (= (div main_~len~0 2) 1)) (.cse1 (select .cse35 .cse37)) (.cse16 (= (select .cse34 .cse37) 0)) (.cse27 (<= main_~uneq~0 .cse36))) (or (let ((.cse26 (select |#memory_$Pointer$.offset| main_~temp~2.base)) (.cse24 (select |#memory_$Pointer$.base| main_~temp~2.base))) (let ((.cse4 (+ main_~count~0 1)) (.cse2 (select (select |#memory_int| main_~temp~2.base) main_~temp~2.offset)) (.cse8 (select .cse24 4)) (.cse9 (+ (select .cse26 4) 4))) (and (<= main_~uneq~0 .cse0) (= .cse1 0) (<= main_~uneq~0 .cse2) .cse3 (<= .cse4 main_~len~0) .cse5 .cse6 (<= main_~len~0 .cse4) .cse7 (= 0 (select (select |#memory_$Pointer$.base| .cse8) .cse9)) .cse10 .cse11 .cse12 .cse13 (= 0 main_~temp~2.offset) (= main_~mid_index~0 1) (= main_~data~0 .cse14) .cse15 .cse16 .cse17 (<= .cse2 main_~uneq~0) .cse18 (<= .cse0 main_~uneq~0) .cse19 .cse20 (= 0 (select (select |#memory_$Pointer$.offset| .cse8) .cse9)) (or (not .cse21) (not (= .cse22 0))) .cse23 (let ((.cse25 (+ main_~temp~2.offset 4))) (or (not (= (select .cse24 .cse25) 0)) (not (= |main_#t~mem16| main_~data~0)) (not (= (select .cse26 .cse25) main_~temp~2.offset)))) .cse27))) (let ((.cse31 (select .cse35 4))) (let ((.cse29 (+ .cse31 4)) (.cse28 (select .cse34 4))) (and (= (select (select |#memory_$Pointer$.base| .cse28) .cse29) 0) .cse3 (= .cse0 main_~data~0) .cse5 (= (select (select |#memory_$Pointer$.offset| .cse28) .cse29) 0) .cse6 (<= .cse14 main_~uneq~0) .cse7 (<= 1 main_~mid_index~0) .cse10 .cse11 (not (= .cse30 0)) .cse13 .cse12 (= .cse0 (select (select |#memory_int| .cse28) .cse31)) .cse15 .cse17 .cse18 (= main_~data~0 .cse32) .cse21 .cse19 .cse20 (<= main_~uneq~0 .cse14) .cse23 (not (= main_~ptr~0.base 0)) (<= main_~mid_index~0 1) (= main_~count~0 0) (or (not (= .cse1 .cse33)) (not .cse16)) .cse27)))))))))) [2020-10-14 23:42:17,920 INFO L268 CegarLoopResult]: For program point L632-3(lines 632 639) no Hoare annotation was computed. [2020-10-14 23:42:17,921 INFO L264 CegarLoopResult]: At program point L626(line 626) the Hoare annotation is: (let ((.cse0 (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (.cse1 (@diff |old(#memory_$Pointer$.offset)| |#memory_$Pointer$.offset|))) (and (not (= |main_~#s~0.base| 0)) (<= main_~len~0 2) (or .cse0 (= (select |old(#valid)| .cse1) 0)) (= |#memory_$Pointer$.offset| (store |old(#memory_$Pointer$.offset)| .cse1 (select |#memory_$Pointer$.offset| .cse1))) (= |main_~#s~0.offset| 0) (<= (+ |#StackHeapBarrier| 1) |main_~#s~0.base|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= main_~data~0 1) (or .cse0 (<= (+ .cse1 1) |#StackHeapBarrier|)) (let ((.cse2 (select (select |old(#memory_$Pointer$.base)| |dll_insert_#in~head.base|) |dll_insert_#in~head.offset|))) (let ((.cse3 (select (select |old(#memory_$Pointer$.base)| .cse2) 4))) (or (= (select (select |old(#memory_int)| .cse2) 0) (select (select |#memory_int| (select (select |#memory_$Pointer$.base| |dll_insert_#in~head.base|) |dll_insert_#in~head.offset|)) 0)) (= .cse3 .cse2) (= |dll_insert_#in~head.base| .cse3) (<= (+ |dll_insert_#in~head.base| 1) |#StackHeapBarrier|) (= |dll_insert_#in~head.base| .cse2) (= (select |old(#valid)| .cse2) 0) (not (= (select (select |old(#memory_$Pointer$.offset)| |dll_insert_#in~head.base|) |dll_insert_#in~head.offset|) 0))))) (< 0 (div main_~len~0 2)))) [2020-10-14 23:42:17,921 INFO L268 CegarLoopResult]: For program point L626-1(line 626) no Hoare annotation was computed. [2020-10-14 23:42:17,921 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 623 660) no Hoare annotation was computed. [2020-10-14 23:42:17,921 INFO L268 CegarLoopResult]: For program point L647(lines 647 649) no Hoare annotation was computed. [2020-10-14 23:42:17,922 INFO L264 CegarLoopResult]: At program point L645-2(lines 645 652) the Hoare annotation is: (let ((.cse43 (select (select |#memory_$Pointer$.base| |main_~#s~0.base|) |main_~#s~0.offset|))) (let ((.cse39 (select |#memory_$Pointer$.base| .cse43)) (.cse42 (select |#memory_$Pointer$.offset| .cse43)) (.cse36 (select (select |#memory_$Pointer$.offset| |main_~#s~0.base|) |main_~#s~0.offset|))) (let ((.cse40 (+ .cse36 4)) (.cse25 (select |#memory_$Pointer$.offset| main_~temp~2.base)) (.cse23 (select |#memory_$Pointer$.base| main_~temp~2.base)) (.cse15 (select .cse42 4)) (.cse44 (select .cse39 4))) (let ((.cse14 (select |#memory_$Pointer$.offset| .cse44)) (.cse12 (select |#memory_$Pointer$.base| .cse44)) (.cse31 (select (select |#memory_int| .cse44) .cse15)) (.cse32 (select .cse23 4)) (.cse33 (+ (select .cse25 4) 4)) (.cse16 (select |#memory_int| .cse43)) (.cse37 (select (select |#memory_int| main_~temp~2.base) main_~temp~2.offset)) (.cse41 (select .cse42 .cse40))) (let ((.cse28 (= main_~ptr~0.base 0)) (.cse1 (<= .cse41 0)) (.cse0 (<= main_~uneq~0 .cse37)) (.cse2 (<= 0 .cse41)) (.cse27 (= main_~ptr~0.offset 0)) (.cse3 (= (select .cse16 .cse36) (let ((.cse38 (select .cse39 .cse40))) (select (select |#memory_int| (select (select |#memory_$Pointer$.base| .cse38) 4)) (select (select |#memory_$Pointer$.offset| .cse38) 4))))) (.cse4 (<= 1 main_~mid_index~0)) (.cse5 (= 0 (select (select |#memory_$Pointer$.base| .cse32) .cse33))) (.cse6 (= |main_~#s~0.offset| 0)) (.cse8 (<= (+ |#StackHeapBarrier| 1) |main_~#s~0.base|)) (.cse7 (<= .cse31 main_~uneq~0)) (.cse9 (< 0 (div main_~len~0 2))) (.cse10 (= 0 main_~temp~2.offset)) (.cse17 (<= main_~len~0 2)) (.cse18 (<= .cse37 main_~uneq~0)) (.cse19 (= main_~data~0 1)) (.cse20 (or (let ((.cse34 (select .cse12 4)) (.cse35 (+ (select .cse14 4) 4))) (and (= (select (select |#memory_$Pointer$.base| .cse34) .cse35) 0) (= (select (select |#memory_$Pointer$.offset| .cse34) .cse35) 0) (= .cse36 0))) (= main_~mid_index~0 0))) (.cse21 (not (= |main_~#s~0.base| 0))) (.cse22 (= 0 (select (select |#memory_$Pointer$.offset| .cse32) .cse33))) (.cse26 (<= main_~mid_index~0 1)) (.cse29 (<= main_~uneq~0 .cse31))) (or (let ((.cse11 (+ main_~ptr~0.offset 4))) (and (<= main_~count~0 main_~len~0) .cse0 .cse1 .cse2 (= (select (select |#memory_int| main_~ptr~0.base) main_~ptr~0.offset) main_~data~0) (<= main_~len~0 main_~count~0) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 (= (select (select |#memory_$Pointer$.base| main_~ptr~0.base) .cse11) 0) (let ((.cse13 (+ .cse15 4))) (or (not (= (select .cse12 .cse13) 0)) (not (= (select .cse14 .cse13) .cse15)) (not (= main_~data~0 (select .cse16 0))))) .cse17 .cse18 .cse19 .cse20 (= (select (select |#memory_$Pointer$.offset| main_~ptr~0.base) .cse11) 0) .cse21 .cse22 (let ((.cse24 (+ main_~temp~2.offset 4))) (or (not (= (select .cse23 .cse24) 0)) (not (= |main_#t~mem16| main_~data~0)) (not (= (select .cse25 .cse24) main_~temp~2.offset)))) .cse26 (or (not .cse27) (not .cse28)) .cse29)) (let ((.cse30 (+ main_~len~0 1))) (and (= main_~temp~3.offset 0) .cse28 .cse1 .cse0 .cse2 .cse27 .cse3 .cse4 .cse5 .cse6 .cse8 .cse7 .cse9 .cse10 (= main_~temp~3.base 0) .cse17 (<= main_~count~0 .cse30) .cse18 .cse19 .cse20 (<= .cse30 main_~count~0) .cse21 .cse22 .cse26 .cse29)))))))) [2020-10-14 23:42:17,922 INFO L268 CegarLoopResult]: For program point L645-3(lines 623 660) no Hoare annotation was computed. [2020-10-14 23:42:17,922 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 658) no Hoare annotation was computed. [2020-10-14 23:42:17,922 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 623 660) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|)) [2020-10-14 23:42:17,923 INFO L264 CegarLoopResult]: At program point L629(line 629) the Hoare annotation is: (let ((.cse2 (select (select |#memory_$Pointer$.base| |main_~#s~0.base|) |main_~#s~0.offset|))) (let ((.cse5 (select |#memory_$Pointer$.base| .cse2))) (let ((.cse0 (select .cse5 4)) (.cse3 (select |#memory_$Pointer$.offset| .cse2)) (.cse1 (select (select |#memory_$Pointer$.offset| |main_~#s~0.base|) |main_~#s~0.offset|)) (.cse4 (select |#memory_int| .cse2))) (and (= main_~mid_index~0 1) (<= main_~len~0 2) (not (= |main_~#s~0.base| .cse0)) (= (select (select |#memory_$Pointer$.base| .cse0) 4) 0) (<= 5 main_~uneq~0) (= .cse1 0) (= main_~data~0 1) (= main_~mid_index~0 (select |#valid| .cse2)) (= (select .cse3 4) 0) (not (= |main_~#s~0.base| 0)) (= (select (select |#memory_$Pointer$.offset| .cse0) 4) 0) (not (= .cse0 0)) (or (<= 1 .cse2) (<= (+ .cse2 1) 0)) (= main_~mid_index~0 (select |#valid| .cse0)) (= |main_~#s~0.offset| 0) (= (div main_~len~0 2) 1) (= (select .cse4 .cse1) (let ((.cse6 (+ .cse1 4))) (select (select |#memory_int| (select .cse5 .cse6)) (select .cse3 .cse6)))) (<= (+ |#StackHeapBarrier| 1) |main_~#s~0.base|) (= main_~data~0 (select .cse4 0)) (not (= |main_~#s~0.base| .cse2)))))) [2020-10-14 23:42:17,923 INFO L268 CegarLoopResult]: For program point L629-1(line 629) no Hoare annotation was computed. [2020-10-14 23:42:17,923 INFO L264 CegarLoopResult]: At program point L656(line 656) the Hoare annotation is: (<= (+ |#StackHeapBarrier| 1) |main_~#s~0.base|) [2020-10-14 23:42:17,923 INFO L268 CegarLoopResult]: For program point L656-1(line 656) no Hoare annotation was computed. [2020-10-14 23:42:17,923 INFO L264 CegarLoopResult]: At program point L654(lines 623 660) the Hoare annotation is: false [2020-10-14 23:42:17,923 INFO L268 CegarLoopResult]: For program point dll_destroyEXIT(lines 592 598) no Hoare annotation was computed. [2020-10-14 23:42:17,923 INFO L264 CegarLoopResult]: At program point dll_destroyENTRY(lines 592 598) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-10-14 23:42:17,924 INFO L271 CegarLoopResult]: At program point L593-2(lines 593 597) the Hoare annotation is: true [2020-10-14 23:42:17,924 INFO L268 CegarLoopResult]: For program point L593-3(lines 592 598) no Hoare annotation was computed. [2020-10-14 23:42:17,924 INFO L264 CegarLoopResult]: At program point node_createENTRY(lines 564 573) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|)) [2020-10-14 23:42:17,924 INFO L268 CegarLoopResult]: For program point node_createFINAL(lines 564 573) no Hoare annotation was computed. [2020-10-14 23:42:17,924 INFO L264 CegarLoopResult]: At program point L567(line 567) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (<= (+ node_create_~temp~0.base 1) |#StackHeapBarrier|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) [2020-10-14 23:42:17,924 INFO L268 CegarLoopResult]: For program point L566(lines 566 568) no Hoare annotation was computed. [2020-10-14 23:42:17,924 INFO L268 CegarLoopResult]: For program point node_createEXIT(lines 564 573) no Hoare annotation was computed. [2020-10-14 23:42:17,924 INFO L268 CegarLoopResult]: For program point L566-1(lines 566 568) no Hoare annotation was computed. [2020-10-14 23:42:17,938 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: unknown symbol (@diff (Array Int (Array Int Int)) (Array Int (Array Int Int)) Int) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.getBinaryOperator(Term2Expression.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:246) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportResult(TraceAbstractionStarter.java:693) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:260) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:217) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-10-14 23:42:17,945 INFO L168 Benchmark]: Toolchain (without parser) took 226864.75 ms. Allocated memory was 146.3 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 101.4 MB in the beginning and 1.1 GB in the end (delta: -985.2 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2020-10-14 23:42:17,945 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-14 23:42:17,946 INFO L168 Benchmark]: CACSL2BoogieTranslator took 669.11 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 101.0 MB in the beginning and 168.4 MB in the end (delta: -67.4 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-10-14 23:42:17,947 INFO L168 Benchmark]: Boogie Preprocessor took 73.47 ms. Allocated memory is still 203.4 MB. Free memory was 168.4 MB in the beginning and 164.6 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-10-14 23:42:17,956 INFO L168 Benchmark]: RCFGBuilder took 735.81 ms. Allocated memory is still 203.4 MB. Free memory was 164.6 MB in the beginning and 109.9 MB in the end (delta: 54.6 MB). Peak memory consumption was 54.6 MB. Max. memory is 7.1 GB. [2020-10-14 23:42:17,957 INFO L168 Benchmark]: TraceAbstraction took 225377.21 ms. Allocated memory was 203.4 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 109.9 MB in the beginning and 1.1 GB in the end (delta: -976.6 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2020-10-14 23:42:17,962 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.4 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 669.11 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 101.0 MB in the beginning and 168.4 MB in the end (delta: -67.4 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 73.47 ms. Allocated memory is still 203.4 MB. Free memory was 168.4 MB in the beginning and 164.6 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 735.81 ms. Allocated memory is still 203.4 MB. Free memory was 164.6 MB in the beginning and 109.9 MB in the end (delta: 54.6 MB). Peak memory consumption was 54.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 225377.21 ms. Allocated memory was 203.4 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 109.9 MB in the beginning and 1.1 GB in the end (delta: -976.6 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 658]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 562]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 623]: Loop Invariant Derived loop invariant: 0 - ExceptionOrErrorResult: IllegalArgumentException: unknown symbol (@diff (Array Int (Array Int Int)) (Array Int (Array Int Int)) Int) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: unknown symbol (@diff (Array Int (Array Int Int)) (Array Int (Array Int Int)) Int): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.getBinaryOperator(Term2Expression.java:553) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...