/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/sll2n_append_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 05:10:32,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 05:10:32,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 05:10:32,683 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 05:10:32,684 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 05:10:32,691 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 05:10:32,693 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 05:10:32,696 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 05:10:32,698 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 05:10:32,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 05:10:32,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 05:10:32,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 05:10:32,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 05:10:32,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 05:10:32,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 05:10:32,709 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 05:10:32,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 05:10:32,711 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 05:10:32,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 05:10:32,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 05:10:32,721 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 05:10:32,722 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 05:10:32,723 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 05:10:32,724 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 05:10:32,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 05:10:32,736 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 05:10:32,741 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 05:10:32,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 05:10:32,742 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 05:10:32,746 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 05:10:32,746 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 05:10:32,747 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 05:10:32,748 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 05:10:32,748 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 05:10:32,750 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 05:10:32,750 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 05:10:32,751 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 05:10:32,751 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 05:10:32,751 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 05:10:32,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 05:10:32,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 05:10:32,754 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 05:10:32,788 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 05:10:32,788 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 05:10:32,789 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 05:10:32,790 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 05:10:32,790 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 05:10:32,790 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 05:10:32,790 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 05:10:32,790 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 05:10:32,791 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 05:10:32,791 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 05:10:32,792 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 05:10:32,792 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 05:10:32,792 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 05:10:32,792 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 05:10:32,793 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 05:10:32,793 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 05:10:32,793 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 05:10:32,793 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 05:10:32,793 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 05:10:32,794 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 05:10:32,794 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 05:10:32,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:10:32,794 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 05:10:32,795 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 05:10:32,795 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 05:10:32,795 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 05:10:32,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 05:10:32,795 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 05:10:32,796 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 05:10:32,796 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 05:10:33,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 05:10:33,122 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 05:10:33,125 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 05:10:33,127 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 05:10:33,127 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 05:10:33,128 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_append_unequal.i [2020-10-14 05:10:33,187 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c7ea4c4e/d4639991563747edbb75eae3ee511cac/FLAGde1672202 [2020-10-14 05:10:33,726 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 05:10:33,726 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/sll2n_append_unequal.i [2020-10-14 05:10:33,741 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c7ea4c4e/d4639991563747edbb75eae3ee511cac/FLAGde1672202 [2020-10-14 05:10:34,025 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c7ea4c4e/d4639991563747edbb75eae3ee511cac [2020-10-14 05:10:34,033 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 05:10:34,034 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 05:10:34,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 05:10:34,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 05:10:34,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 05:10:34,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:10:34" (1/1) ... [2020-10-14 05:10:34,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2905bd1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:10:34, skipping insertion in model container [2020-10-14 05:10:34,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:10:34" (1/1) ... [2020-10-14 05:10:34,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 05:10:34,093 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 05:10:34,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:10:34,543 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 05:10:34,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:10:34,691 INFO L208 MainTranslator]: Completed translation [2020-10-14 05:10:34,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:10:34 WrapperNode [2020-10-14 05:10:34,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 05:10:34,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 05:10:34,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 05:10:34,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 05:10:34,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:10:34" (1/1) ... [2020-10-14 05:10:34,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:10:34" (1/1) ... [2020-10-14 05:10:34,723 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:10:34" (1/1) ... [2020-10-14 05:10:34,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:10:34" (1/1) ... [2020-10-14 05:10:34,743 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:10:34" (1/1) ... [2020-10-14 05:10:34,748 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:10:34" (1/1) ... [2020-10-14 05:10:34,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:10:34" (1/1) ... [2020-10-14 05:10:34,758 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 05:10:34,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 05:10:34,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 05:10:34,759 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 05:10:34,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:10:34" (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 05:10:34,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 05:10:34,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 05:10:34,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-14 05:10:34,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-14 05:10:34,822 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-14 05:10:34,822 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-14 05:10:34,822 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-10-14 05:10:34,822 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-10-14 05:10:34,823 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_append [2020-10-14 05:10:34,823 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 05:10:34,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 05:10:34,823 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-14 05:10:34,823 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-14 05:10:34,823 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 05:10:34,824 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 05:10:34,824 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 05:10:34,824 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 05:10:34,824 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 05:10:34,824 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 05:10:34,824 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 05:10:34,824 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 05:10:34,825 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 05:10:34,825 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 05:10:34,825 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 05:10:34,825 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 05:10:34,825 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 05:10:34,825 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 05:10:34,826 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 05:10:34,826 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 05:10:34,826 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 05:10:34,826 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 05:10:34,826 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 05:10:34,826 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 05:10:34,826 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 05:10:34,827 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 05:10:34,827 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 05:10:34,827 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 05:10:34,827 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 05:10:34,827 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 05:10:34,827 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 05:10:34,828 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 05:10:34,828 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 05:10:34,828 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 05:10:34,828 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 05:10:34,828 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 05:10:34,828 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 05:10:34,829 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 05:10:34,829 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 05:10:34,829 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 05:10:34,829 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 05:10:34,829 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 05:10:34,829 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 05:10:34,830 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 05:10:34,830 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 05:10:34,830 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 05:10:34,830 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 05:10:34,830 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 05:10:34,830 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 05:10:34,831 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 05:10:34,831 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 05:10:34,831 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 05:10:34,831 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 05:10:34,831 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 05:10:34,831 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 05:10:34,831 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 05:10:34,832 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 05:10:34,832 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 05:10:34,832 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 05:10:34,832 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 05:10:34,832 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 05:10:34,832 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 05:10:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 05:10:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 05:10:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 05:10:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 05:10:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 05:10:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 05:10:34,833 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 05:10:34,834 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 05:10:34,834 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 05:10:34,834 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 05:10:34,834 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 05:10:34,834 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 05:10:34,834 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 05:10:34,834 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 05:10:34,835 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 05:10:34,835 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 05:10:34,835 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 05:10:34,835 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 05:10:34,835 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 05:10:34,835 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 05:10:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 05:10:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 05:10:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 05:10:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 05:10:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 05:10:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 05:10:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 05:10:34,837 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 05:10:34,837 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 05:10:34,837 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 05:10:34,837 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 05:10:34,837 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 05:10:34,837 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 05:10:34,837 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 05:10:34,838 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 05:10:34,838 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 05:10:34,838 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 05:10:34,838 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 05:10:34,838 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 05:10:34,838 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 05:10:34,838 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 05:10:34,839 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 05:10:34,839 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 05:10:34,839 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 05:10:34,839 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 05:10:34,839 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-14 05:10:34,839 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-14 05:10:34,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 05:10:34,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 05:10:34,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 05:10:34,840 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-10-14 05:10:34,840 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-10-14 05:10:34,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 05:10:34,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 05:10:34,841 INFO L130 BoogieDeclarations]: Found specification of procedure sll_append [2020-10-14 05:10:34,841 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 05:10:34,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 05:10:34,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-14 05:10:34,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 05:10:34,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 05:10:34,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 05:10:35,246 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-14 05:10:35,431 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 05:10:35,431 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-14 05:10:35,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:10:35 BoogieIcfgContainer [2020-10-14 05:10:35,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 05:10:35,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 05:10:35,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 05:10:35,439 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 05:10:35,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:10:34" (1/3) ... [2020-10-14 05:10:35,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5676f0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:10:35, skipping insertion in model container [2020-10-14 05:10:35,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:10:34" (2/3) ... [2020-10-14 05:10:35,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5676f0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:10:35, skipping insertion in model container [2020-10-14 05:10:35,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:10:35" (3/3) ... [2020-10-14 05:10:35,443 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_append_unequal.i [2020-10-14 05:10:35,453 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 05:10:35,460 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 05:10:35,472 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 05:10:35,493 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 05:10:35,494 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 05:10:35,494 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 05:10:35,494 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 05:10:35,494 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 05:10:35,495 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 05:10:35,495 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 05:10:35,495 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 05:10:35,514 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-10-14 05:10:35,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 05:10:35,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:10:35,522 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] [2020-10-14 05:10:35,523 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:10:35,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:10:35,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1433043619, now seen corresponding path program 1 times [2020-10-14 05:10:35,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:10:35,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898126544] [2020-10-14 05:10:35,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:10:35,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:10:35,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:35,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:10:35,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 05:10:35,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:10:35,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-14 05:10:35,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:10:35,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:10:35,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:10:35,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 05:10:35,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:10:35,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 05:10:35,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:10:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:10:35,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:35,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:10:35,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:10:35,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:10:35,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 05:10:35,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:10:35,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:10:35,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:10:35,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:10:35,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:10:35,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:10:35,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:10:35,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:10:35,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:35,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:10:35,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:10:35,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:10:35,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 05:10:35,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:10:35,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:10:35,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:10:35,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 05:10:35,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:10:35,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:10:36,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 05:10:36,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:10:36,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:36,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:10:36,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:10:36,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:10:36,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 05:10:36,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:10:36,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:10:36,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:10:36,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:10:36,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:10:36,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:10:36,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:10:36,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:10:36,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:36,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:10:36,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:10:36,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:10:36,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 05:10:36,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:10:36,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:10:36,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:10:36,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:10:36,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:10:36,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:10:36,139 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 05:10:36,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898126544] [2020-10-14 05:10:36,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:10:36,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 05:10:36,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108053461] [2020-10-14 05:10:36,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 05:10:36,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:10:36,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 05:10:36,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 05:10:36,164 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 4 states. [2020-10-14 05:10:36,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:10:36,361 INFO L93 Difference]: Finished difference Result 104 states and 136 transitions. [2020-10-14 05:10:36,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:10:36,363 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-14 05:10:36,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:10:36,374 INFO L225 Difference]: With dead ends: 104 [2020-10-14 05:10:36,374 INFO L226 Difference]: Without dead ends: 46 [2020-10-14 05:10:36,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:10:36,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-14 05:10:36,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2020-10-14 05:10:36,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 05:10:36,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2020-10-14 05:10:36,426 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 29 [2020-10-14 05:10:36,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:10:36,426 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2020-10-14 05:10:36,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 05:10:36,427 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2020-10-14 05:10:36,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 05:10:36,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:10:36,429 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] [2020-10-14 05:10:36,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 05:10:36,430 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:10:36,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:10:36,430 INFO L82 PathProgramCache]: Analyzing trace with hash -257763685, now seen corresponding path program 1 times [2020-10-14 05:10:36,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:10:36,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616613850] [2020-10-14 05:10:36,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:10:36,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:10:36,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:36,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:10:36,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 05:10:36,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:10:36,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-14 05:10:36,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:10:36,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:10:36,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:10:36,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:10:36,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:10:36,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:10:36,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:10:36,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:10:36,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:36,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:10:36,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:10:36,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:10:36,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:10:36,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:10:36,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:10:36,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:10:36,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:10:36,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:10:36,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:10:36,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:10:36,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:10:36,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:36,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:10:36,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:10:36,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:10:36,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 05:10:36,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:10:36,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:10:36,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:10:36,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:10:36,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:10:36,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:10:36,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 05:10:36,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:10:36,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:36,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:10:36,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:10:36,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:10:36,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 05:10:36,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:10:36,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:10:36,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:10:36,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:10:36,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:10:36,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:10:36,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:10:36,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:10:36,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:36,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:10:36,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:10:36,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:10:36,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:10:36,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:10:36,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:10:36,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:10:36,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:10:36,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:10:36,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:10:36,734 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 05:10:36,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616613850] [2020-10-14 05:10:36,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:10:36,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 05:10:36,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676491324] [2020-10-14 05:10:36,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 05:10:36,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:10:36,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 05:10:36,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:10:36,738 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 7 states. [2020-10-14 05:10:37,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:10:37,034 INFO L93 Difference]: Finished difference Result 74 states and 88 transitions. [2020-10-14 05:10:37,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 05:10:37,034 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-10-14 05:10:37,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:10:37,037 INFO L225 Difference]: With dead ends: 74 [2020-10-14 05:10:37,037 INFO L226 Difference]: Without dead ends: 45 [2020-10-14 05:10:37,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:10:37,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-14 05:10:37,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2020-10-14 05:10:37,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-14 05:10:37,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-10-14 05:10:37,060 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 29 [2020-10-14 05:10:37,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:10:37,060 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-10-14 05:10:37,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 05:10:37,061 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-10-14 05:10:37,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 05:10:37,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:10:37,062 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] [2020-10-14 05:10:37,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 05:10:37,063 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:10:37,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:10:37,063 INFO L82 PathProgramCache]: Analyzing trace with hash 58818396, now seen corresponding path program 1 times [2020-10-14 05:10:37,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:10:37,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1391880434] [2020-10-14 05:10:37,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:10:37,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:10:37,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:37,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:37,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:40,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:10:40,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 05:10:40,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:10:40,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3146 [2020-10-14 05:10:40,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:10:40,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:10:40,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:10:40,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:10:40,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:10:40,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 05:10:40,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:10:40,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:10:40,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:40,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:10:40,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:10:40,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:10:40,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:10:40,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:10:40,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:10:40,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:10:40,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:10:40,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:10:40,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:10:40,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:10:40,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:10:40,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:40,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:10:40,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:10:40,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:10:40,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 05:10:40,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:10:40,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:10:40,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:10:40,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:10:40,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:10:40,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:10:40,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:10:40,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:10:40,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:40,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:10:40,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:10:40,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:10:40,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 05:10:40,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:10:40,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:10:40,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:10:40,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:10:40,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:10:40,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:10:40,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 05:10:40,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:10:40,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:40,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:10:40,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:10:40,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:10:40,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 05:10:40,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:10:40,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:10:40,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:10:40,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 05:10:40,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:10:40,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:10:40,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:10:40,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:10:40,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:40,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:10:40,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:10:40,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:10:40,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 05:10:40,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:10:40,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:10:40,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:10:40,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:10:40,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:10:40,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:10:40,531 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 05:10:40,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1391880434] [2020-10-14 05:10:40,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:10:40,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 05:10:40,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594800732] [2020-10-14 05:10:40,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 05:10:40,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:10:40,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 05:10:40,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:10:40,535 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 8 states. [2020-10-14 05:10:40,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:10:40,826 INFO L93 Difference]: Finished difference Result 78 states and 93 transitions. [2020-10-14 05:10:40,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 05:10:40,828 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-10-14 05:10:40,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:10:40,832 INFO L225 Difference]: With dead ends: 78 [2020-10-14 05:10:40,832 INFO L226 Difference]: Without dead ends: 49 [2020-10-14 05:10:40,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:10:40,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-14 05:10:40,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2020-10-14 05:10:40,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-14 05:10:40,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2020-10-14 05:10:40,855 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 38 [2020-10-14 05:10:40,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:10:40,855 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2020-10-14 05:10:40,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 05:10:40,855 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2020-10-14 05:10:40,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 05:10:40,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:10:40,859 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:10:40,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 05:10:40,859 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:10:40,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:10:40,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1476517957, now seen corresponding path program 2 times [2020-10-14 05:10:40,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:10:40,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626851325] [2020-10-14 05:10:40,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:10:40,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:10:40,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:41,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:41,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:42,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:44,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:10:44,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 05:10:44,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:10:44,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4005 [2020-10-14 05:10:44,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:10:44,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:10:44,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 05:10:44,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:10:44,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 05:10:44,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:10:45,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:10:45,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:10:45,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:45,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:10:45,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:10:45,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:10:45,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:10:45,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:10:45,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:10:45,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:10:45,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:10:45,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:10:45,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:10:45,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:10:45,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:10:45,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:45,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:45,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:10:45,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 05:10:45,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:10:45,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-10-14 05:10:45,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:10:45,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:10:45,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:10:45,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:10:45,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 05:10:45,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:10:45,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:10:45,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:10:45,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:45,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:45,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:10:45,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:10:45,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:10:45,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 05:10:45,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:10:45,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:10:45,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:10:45,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:10:45,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:10:45,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:10:45,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 05:10:45,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:10:45,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:45,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:10:45,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:10:45,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:10:45,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 05:10:45,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:10:45,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:10:45,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:10:45,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:10:45,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:10:45,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:10:45,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 05:10:45,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:10:45,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:45,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:46,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:10:46,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:10:46,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:10:46,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-14 05:10:46,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:10:46,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:10:46,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:10:46,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:10:46,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:10:46,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:10:46,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:10:46,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:10:46,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:46,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:10:46,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:10:46,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:10:46,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 05:10:46,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:10:46,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:10:46,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:10:46,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:10:46,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:10:46,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:10:46,280 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 05:10:46,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626851325] [2020-10-14 05:10:46,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:10:46,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 05:10:46,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360745790] [2020-10-14 05:10:46,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 05:10:46,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:10:46,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 05:10:46,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=496, Unknown=0, NotChecked=0, Total=552 [2020-10-14 05:10:46,283 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand 24 states. [2020-10-14 05:10:47,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:10:47,066 INFO L93 Difference]: Finished difference Result 59 states and 71 transitions. [2020-10-14 05:10:47,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 05:10:47,067 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 47 [2020-10-14 05:10:47,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:10:47,068 INFO L225 Difference]: With dead ends: 59 [2020-10-14 05:10:47,069 INFO L226 Difference]: Without dead ends: 47 [2020-10-14 05:10:47,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=106, Invalid=950, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 05:10:47,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-14 05:10:47,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2020-10-14 05:10:47,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-14 05:10:47,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2020-10-14 05:10:47,078 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 47 [2020-10-14 05:10:47,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:10:47,078 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2020-10-14 05:10:47,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 05:10:47,079 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2020-10-14 05:10:47,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 05:10:47,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:10:47,080 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:10:47,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 05:10:47,081 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:10:47,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:10:47,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1884294349, now seen corresponding path program 1 times [2020-10-14 05:10:47,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:10:47,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751091332] [2020-10-14 05:10:47,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:10:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:10:47,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:47,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:47,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:48,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:48,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:48,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:50,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:52,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:10:52,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 05:10:52,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 05:10:52,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 05:10:52,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:10:52,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:10:52,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:10:52,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-14 05:10:52,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:10:52,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:10:52,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:10:52,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:10:52,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:52,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:10:52,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:10:52,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:10:52,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:10:52,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:10:52,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:10:52,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:10:52,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:10:52,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:10:52,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:10:52,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:10:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:10:52,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:52,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:10:52,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 05:10:52,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:10:52,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 05:10:52,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:10:52,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:10:52,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:10:52,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:10:52,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:10:52,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:10:52,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:10:52,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:10:52,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:52,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:10:52,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:10:52,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:10:52,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:10:52,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:10:52,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:10:52,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:10:52,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:10:52,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:10:52,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:10:52,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 05:10:52,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:10:52,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:52,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:10:52,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:10:52,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:10:52,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:10:52,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:10:52,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:10:52,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:10:52,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:10:52,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:10:52,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:10:52,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 05:10:52,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:10:52,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:52,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:10:52,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:10:52,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:10:52,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 05:10:52,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:10:52,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:10:52,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:10:52,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:10:52,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:10:52,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:10:52,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:10:52,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:10:52,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:52,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:10:52,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:10:52,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:10:52,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 05:10:52,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:10:52,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:10:52,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:10:52,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:10:52,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:10:52,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:10:52,666 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 05:10:52,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1751091332] [2020-10-14 05:10:52,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:10:52,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-14 05:10:52,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556831982] [2020-10-14 05:10:52,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 05:10:52,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:10:52,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 05:10:52,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-14 05:10:52,669 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand 15 states. [2020-10-14 05:10:53,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:10:53,211 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2020-10-14 05:10:53,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 05:10:53,211 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 50 [2020-10-14 05:10:53,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:10:53,213 INFO L225 Difference]: With dead ends: 64 [2020-10-14 05:10:53,213 INFO L226 Difference]: Without dead ends: 61 [2020-10-14 05:10:53,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2020-10-14 05:10:53,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-14 05:10:53,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 53. [2020-10-14 05:10:53,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-14 05:10:53,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2020-10-14 05:10:53,228 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 50 [2020-10-14 05:10:53,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:10:53,228 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2020-10-14 05:10:53,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 05:10:53,228 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2020-10-14 05:10:53,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 05:10:53,233 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:10:53,234 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:10:53,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 05:10:53,235 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:10:53,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:10:53,235 INFO L82 PathProgramCache]: Analyzing trace with hash 753895118, now seen corresponding path program 1 times [2020-10-14 05:10:53,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:10:53,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407650628] [2020-10-14 05:10:53,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:10:53,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:10:53,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:53,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:54,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:55,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:57,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:57,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:57,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:58,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:58,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:10:58,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 05:10:58,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 05:10:58,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 05:10:58,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:10:58,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:10:58,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:10:58,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-14 05:10:58,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 05:10:58,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 05:10:58,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:10:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:10:58,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:58,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:10:58,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:10:58,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:10:58,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:10:58,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:10:58,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:10:58,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:10:58,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:10:58,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:10:58,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:10:58,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:10:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:10:58,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:58,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:10:58,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 05:10:58,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:10:58,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 05:10:58,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:10:58,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:10:58,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:10:58,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:10:58,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:10:58,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:10:58,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:10:58,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:10:58,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:58,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:10:58,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:10:58,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:10:58,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 05:10:58,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:10:58,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:10:58,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:10:58,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:10:58,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:10:58,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:10:58,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 05:10:58,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:10:58,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:58,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:10:58,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:10:58,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:10:58,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:10:58,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:10:58,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:10:58,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:10:58,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:10:58,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:10:58,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:10:58,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 05:10:58,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:10:58,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:10:58,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:10:58,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:10:58,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:10:58,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-14 05:10:58,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:10:58,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:10:58,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:10:58,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:10:58,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 05:10:58,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:10:58,911 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2020-10-14 05:10:59,299 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 52 [2020-10-14 05:10:59,778 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 81 [2020-10-14 05:11:00,230 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 75 [2020-10-14 05:11:00,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:11:00,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:00,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:00,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:00,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:11:00,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:00,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:11:00,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:00,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:00,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:11:00,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:00,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:11:00,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:11:00,291 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-14 05:11:00,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407650628] [2020-10-14 05:11:00,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:11:00,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 05:11:00,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082887890] [2020-10-14 05:11:00,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 05:11:00,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:11:00,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 05:11:00,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-14 05:11:00,294 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 14 states. [2020-10-14 05:11:00,780 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-10-14 05:11:01,138 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2020-10-14 05:11:01,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:11:01,506 INFO L93 Difference]: Finished difference Result 71 states and 82 transitions. [2020-10-14 05:11:01,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 05:11:01,507 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 52 [2020-10-14 05:11:01,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:11:01,509 INFO L225 Difference]: With dead ends: 71 [2020-10-14 05:11:01,510 INFO L226 Difference]: Without dead ends: 68 [2020-10-14 05:11:01,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2020-10-14 05:11:01,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-14 05:11:01,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 55. [2020-10-14 05:11:01,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-14 05:11:01,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2020-10-14 05:11:01,524 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 52 [2020-10-14 05:11:01,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:11:01,525 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2020-10-14 05:11:01,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 05:11:01,525 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2020-10-14 05:11:01,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 05:11:01,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:11:01,528 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:11:01,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 05:11:01,529 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:11:01,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:11:01,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1644551471, now seen corresponding path program 1 times [2020-10-14 05:11:01,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:11:01,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225656944] [2020-10-14 05:11:01,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:11:01,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:01,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:02,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:02,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:05,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:05,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 05:11:05,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:11:05,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3901 [2020-10-14 05:11:05,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:05,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:05,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 05:11:05,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:11:05,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 05:11:05,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:11:05,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:11:05,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:05,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:05,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:05,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:11:05,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:05,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:11:05,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:05,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:05,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:11:05,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:05,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:11:05,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:11:05,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:11:05,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:05,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:05,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:05,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 05:11:05,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:05,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 05:11:05,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:05,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:05,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:11:05,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:05,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 05:11:05,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:11:05,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:11:05,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:05,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:05,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:05,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:11:05,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:05,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 05:11:05,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:05,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:05,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:11:05,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:05,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:11:05,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:11:05,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 05:11:05,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:05,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:05,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:05,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:11:05,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:05,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 05:11:05,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:05,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:05,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:11:05,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:05,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 05:11:05,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:11:05,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 05:11:05,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:05,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:05,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:05,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:11:05,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:05,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 05:11:05,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:05,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:05,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:11:05,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:11:05,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 05:11:05,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:11:06,391 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 64 [2020-10-14 05:11:06,710 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 70 [2020-10-14 05:11:06,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:11:06,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:06,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:06,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:06,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:11:06,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:06,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 05:11:06,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:06,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:06,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:11:06,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:11:06,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:11:06,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:11:07,232 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 37 [2020-10-14 05:11:07,262 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 05:11:07,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225656944] [2020-10-14 05:11:07,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:11:07,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 05:11:07,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246550000] [2020-10-14 05:11:07,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 05:11:07,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:11:07,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 05:11:07,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2020-10-14 05:11:07,264 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand 22 states. [2020-10-14 05:11:08,106 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-14 05:11:08,925 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2020-10-14 05:11:09,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:11:09,352 INFO L93 Difference]: Finished difference Result 79 states and 92 transitions. [2020-10-14 05:11:09,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 05:11:09,354 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 52 [2020-10-14 05:11:09,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:11:09,355 INFO L225 Difference]: With dead ends: 79 [2020-10-14 05:11:09,355 INFO L226 Difference]: Without dead ends: 77 [2020-10-14 05:11:09,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=154, Invalid=1252, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 05:11:09,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-14 05:11:09,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 63. [2020-10-14 05:11:09,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-14 05:11:09,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2020-10-14 05:11:09,366 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 52 [2020-10-14 05:11:09,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:11:09,367 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2020-10-14 05:11:09,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 05:11:09,367 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2020-10-14 05:11:09,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 05:11:09,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:11:09,368 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:11:09,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 05:11:09,368 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:11:09,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:11:09,369 INFO L82 PathProgramCache]: Analyzing trace with hash -558566077, now seen corresponding path program 1 times [2020-10-14 05:11:09,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:11:09,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1375577825] [2020-10-14 05:11:09,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:11:09,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:09,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:09,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:09,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:11,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:11,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:11,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:12,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:12,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:12,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:13,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:13,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:14,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:14,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 05:11:14,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 05:11:14,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 05:11:14,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:14,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:14,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:11:14,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-14 05:11:14,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 05:11:14,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:11:14,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:11:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:14,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:14,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:14,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:11:14,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:14,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:11:14,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:14,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:14,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:11:14,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:14,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:11:14,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:11:14,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:11:14,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:14,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:14,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:14,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 05:11:14,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:14,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 05:11:14,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:14,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:14,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:11:14,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:14,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:11:14,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:11:14,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:11:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:14,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:14,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:14,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:11:14,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:14,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:11:14,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:14,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:14,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:11:14,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:14,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:11:14,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:11:14,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 05:11:14,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:14,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:14,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:14,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:11:14,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:14,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:11:14,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:14,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:14,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:11:14,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:14,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:11:14,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:11:14,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 05:11:14,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:14,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:14,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:14,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:11:14,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:14,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:11:14,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:14,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:14,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:11:14,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:14,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:11:14,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:11:14,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:11:14,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:14,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:14,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:14,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:11:14,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:14,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:11:14,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:14,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:14,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:11:14,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:14,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:11:14,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:11:14,529 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-14 05:11:14,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1375577825] [2020-10-14 05:11:14,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:11:14,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 05:11:14,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378649401] [2020-10-14 05:11:14,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 05:11:14,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:11:14,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 05:11:14,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:11:14,531 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand 7 states. [2020-10-14 05:11:14,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:11:14,697 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2020-10-14 05:11:14,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 05:11:14,697 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 53 [2020-10-14 05:11:14,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:11:14,699 INFO L225 Difference]: With dead ends: 73 [2020-10-14 05:11:14,700 INFO L226 Difference]: Without dead ends: 68 [2020-10-14 05:11:14,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:11:14,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-14 05:11:14,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2020-10-14 05:11:14,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-14 05:11:14,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2020-10-14 05:11:14,710 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 53 [2020-10-14 05:11:14,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:11:14,711 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2020-10-14 05:11:14,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 05:11:14,711 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2020-10-14 05:11:14,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 05:11:14,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:11:14,712 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:11:14,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 05:11:14,712 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:11:14,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:11:14,713 INFO L82 PathProgramCache]: Analyzing trace with hash 2023268265, now seen corresponding path program 2 times [2020-10-14 05:11:14,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:11:14,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047104851] [2020-10-14 05:11:14,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:11:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:14,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:15,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:15,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:15,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:15,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:16,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:16,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:19,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:19,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:19,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 05:11:19,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 05:11:19,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 05:11:19,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:19,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:19,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:11:19,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-14 05:11:19,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 05:11:19,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:11:19,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:11:19,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:19,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:19,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:19,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:11:19,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:19,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:11:19,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:19,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:19,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:11:19,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:19,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:11:19,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:11:19,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:11:19,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:19,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:19,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:19,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 05:11:19,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:19,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 05:11:19,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:19,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:19,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:11:19,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:19,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:11:19,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:11:19,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:11:19,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:19,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:19,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:19,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:11:19,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:19,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:11:19,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:19,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:19,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:11:19,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:19,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:11:19,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:11:19,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 05:11:19,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:19,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:19,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:19,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:11:19,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:19,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:11:19,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:19,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:19,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:11:19,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:19,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:11:19,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:11:19,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 05:11:19,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:19,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:19,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:19,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 05:11:19,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:19,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 05:11:19,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:19,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:19,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:11:19,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:19,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 05:11:19,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:11:20,542 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 79 [2020-10-14 05:11:20,990 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 73 [2020-10-14 05:11:21,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:11:21,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:21,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:21,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:21,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:11:21,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:21,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:11:21,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:21,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:21,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:11:21,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:21,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:11:21,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:11:21,042 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-14 05:11:21,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047104851] [2020-10-14 05:11:21,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:11:21,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 05:11:21,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844491059] [2020-10-14 05:11:21,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 05:11:21,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:11:21,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 05:11:21,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-14 05:11:21,044 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand 14 states. [2020-10-14 05:11:21,506 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 60 [2020-10-14 05:11:21,671 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 54 [2020-10-14 05:11:21,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:11:21,824 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-10-14 05:11:21,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 05:11:21,824 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-10-14 05:11:21,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:11:21,825 INFO L225 Difference]: With dead ends: 76 [2020-10-14 05:11:21,825 INFO L226 Difference]: Without dead ends: 73 [2020-10-14 05:11:21,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2020-10-14 05:11:21,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-14 05:11:21,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 58. [2020-10-14 05:11:21,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-14 05:11:21,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2020-10-14 05:11:21,835 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 54 [2020-10-14 05:11:21,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:11:21,835 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2020-10-14 05:11:21,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 05:11:21,836 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2020-10-14 05:11:21,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 05:11:21,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:11:21,837 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:11:21,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 05:11:21,837 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:11:21,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:11:21,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1381042678, now seen corresponding path program 1 times [2020-10-14 05:11:21,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:11:21,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179494705] [2020-10-14 05:11:21,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:11:21,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:21,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:22,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:22,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 05:11:22,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:22,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 635 [2020-10-14 05:11:22,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:22,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:22,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-14 05:11:22,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:11:22,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 05:11:22,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:11:22,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:11:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:22,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:22,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:22,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:11:22,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:22,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:11:22,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:22,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:22,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:11:22,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:22,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:11:22,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:11:22,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:11:22,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:22,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:22,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:22,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 05:11:22,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:22,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-14 05:11:22,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:22,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:22,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:11:22,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:22,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 05:11:22,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:11:22,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:11:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:22,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:22,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:22,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:11:22,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:22,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 05:11:22,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:22,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:22,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:11:22,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:22,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:11:22,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:11:23,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 05:11:23,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:23,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:23,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:23,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:11:23,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:23,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 05:11:23,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:23,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:23,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:11:23,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:23,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 05:11:23,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:11:23,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 05:11:23,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:23,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:23,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:23,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:11:23,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:23,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 05:11:23,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:23,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:23,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 05:11:23,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:11:23,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 05:11:23,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:11:23,628 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2020-10-14 05:11:24,188 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 85 [2020-10-14 05:11:24,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:11:24,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:24,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:24,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:24,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:11:24,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:24,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 05:11:24,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:24,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:24,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:11:24,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:11:24,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:11:24,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:11:24,622 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 44 [2020-10-14 05:11:24,649 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 05:11:24,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179494705] [2020-10-14 05:11:24,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:11:24,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 05:11:24,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933999036] [2020-10-14 05:11:24,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 05:11:24,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:11:24,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 05:11:24,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2020-10-14 05:11:24,652 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand 27 states. [2020-10-14 05:11:26,179 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2020-10-14 05:11:26,530 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 66 [2020-10-14 05:11:26,888 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 71 [2020-10-14 05:11:27,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:11:27,616 INFO L93 Difference]: Finished difference Result 79 states and 90 transitions. [2020-10-14 05:11:27,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 05:11:27,616 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 54 [2020-10-14 05:11:27,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:11:27,617 INFO L225 Difference]: With dead ends: 79 [2020-10-14 05:11:27,618 INFO L226 Difference]: Without dead ends: 77 [2020-10-14 05:11:27,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=174, Invalid=1632, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 05:11:27,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-14 05:11:27,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 60. [2020-10-14 05:11:27,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-14 05:11:27,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions. [2020-10-14 05:11:27,628 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 68 transitions. Word has length 54 [2020-10-14 05:11:27,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:11:27,629 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 68 transitions. [2020-10-14 05:11:27,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 05:11:27,629 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 68 transitions. [2020-10-14 05:11:27,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 05:11:27,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:11:27,630 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:11:27,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 05:11:27,630 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:11:27,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:11:27,631 INFO L82 PathProgramCache]: Analyzing trace with hash 141948043, now seen corresponding path program 1 times [2020-10-14 05:11:27,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:11:27,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1975308024] [2020-10-14 05:11:27,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:11:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:27,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:27,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:27,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:28,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:29,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:29,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:30,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:30,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:30,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:31,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:31,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:32,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:32,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 05:11:32,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 05:11:32,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 05:11:32,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:32,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:32,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 05:11:32,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:11:32,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 05:11:32,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:11:32,691 ERROR L253 erpolLogProxyWrapper]: Interpolant 10 not inductive [2020-10-14 05:11:32,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 05:11:32,693 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:849) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:155) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:256) at de.uni_freiburg.informatik.ultimate.smtinterpol.muses.MusEnumerationScript.getInterpolants(MusEnumerationScript.java:150) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) 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 05:11:32,698 INFO L168 Benchmark]: Toolchain (without parser) took 58663.79 ms. Allocated memory was 148.4 MB in the beginning and 857.7 MB in the end (delta: 709.4 MB). Free memory was 101.9 MB in the beginning and 790.4 MB in the end (delta: -688.5 MB). Peak memory consumption was 728.6 MB. Max. memory is 7.1 GB. [2020-10-14 05:11:32,699 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 148.4 MB. Free memory was 121.7 MB in the beginning and 121.2 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-10-14 05:11:32,700 INFO L168 Benchmark]: CACSL2BoogieTranslator took 657.32 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 101.9 MB in the beginning and 168.8 MB in the end (delta: -66.9 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2020-10-14 05:11:32,700 INFO L168 Benchmark]: Boogie Preprocessor took 65.62 ms. Allocated memory is still 204.5 MB. Free memory was 168.8 MB in the beginning and 166.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-10-14 05:11:32,701 INFO L168 Benchmark]: RCFGBuilder took 676.16 ms. Allocated memory is still 204.5 MB. Free memory was 166.0 MB in the beginning and 115.3 MB in the end (delta: 50.8 MB). Peak memory consumption was 50.8 MB. Max. memory is 7.1 GB. [2020-10-14 05:11:32,702 INFO L168 Benchmark]: TraceAbstraction took 57260.50 ms. Allocated memory was 204.5 MB in the beginning and 857.7 MB in the end (delta: 653.3 MB). Free memory was 115.3 MB in the beginning and 790.4 MB in the end (delta: -675.2 MB). Peak memory consumption was 685.8 MB. Max. memory is 7.1 GB. [2020-10-14 05:11:32,705 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 148.4 MB. Free memory was 121.7 MB in the beginning and 121.2 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 657.32 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 101.9 MB in the beginning and 168.8 MB in the end (delta: -66.9 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 65.62 ms. Allocated memory is still 204.5 MB. Free memory was 168.8 MB in the beginning and 166.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 676.16 ms. Allocated memory is still 204.5 MB. Free memory was 166.0 MB in the beginning and 115.3 MB in the end (delta: 50.8 MB). Peak memory consumption was 50.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 57260.50 ms. Allocated memory was 204.5 MB in the beginning and 857.7 MB in the end (delta: 653.3 MB). Free memory was 115.3 MB in the beginning and 790.4 MB in the end (delta: -675.2 MB). Peak memory consumption was 685.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...