/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:21:30,597 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:21:30,599 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:21:30,624 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:21:30,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:21:30,626 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:21:30,627 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:21:30,629 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:21:30,630 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:21:30,633 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:21:30,634 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:21:30,636 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:21:30,636 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:21:30,637 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:21:30,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:21:30,642 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:21:30,643 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:21:30,644 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:21:30,645 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:21:30,647 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:21:30,648 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:21:30,649 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:21:30,653 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:21:30,654 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:21:30,656 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:21:30,657 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:21:30,657 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:21:30,658 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:21:30,658 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:21:30,659 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:21:30,659 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:21:30,660 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:21:30,661 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:21:30,661 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:21:30,662 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:21:30,663 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:21:30,663 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:21:30,663 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:21:30,664 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:21:30,665 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:21:30,665 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:21:30,666 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 23:21:30,691 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:21:30,691 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:21:30,693 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:21:30,693 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:21:30,694 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:21:30,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:21:30,695 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:21:30,695 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:21:30,695 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:21:30,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:21:30,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:21:30,696 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:21:30,696 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:21:30,696 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:21:30,697 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:21:30,697 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:21:30,697 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:21:30,697 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:21:30,697 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:21:30,698 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:21:30,698 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:21:30,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:21:30,700 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:21:30,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:21:30,700 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:21:30,701 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:21:30,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:21:30,701 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:21:30,701 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:21:30,701 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:21:31,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:21:31,052 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:21:31,057 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:21:31,058 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:21:31,058 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:21:31,059 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1-1.i [2020-10-14 23:21:31,122 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/847b9989d/99e4244dcdda425f93281dd6f3010b8a/FLAG33e68143e [2020-10-14 23:21:31,649 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:21:31,649 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1-1.i [2020-10-14 23:21:31,663 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/847b9989d/99e4244dcdda425f93281dd6f3010b8a/FLAG33e68143e [2020-10-14 23:21:31,957 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/847b9989d/99e4244dcdda425f93281dd6f3010b8a [2020-10-14 23:21:31,965 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:21:31,967 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:21:31,968 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:21:31,968 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:21:31,972 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:21:31,973 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:21:31" (1/1) ... [2020-10-14 23:21:31,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@654a9070 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:21:31, skipping insertion in model container [2020-10-14 23:21:31,977 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:21:31" (1/1) ... [2020-10-14 23:21:31,985 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:21:32,045 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:21:32,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:21:32,457 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:21:32,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:21:32,567 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:21:32,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:21:32 WrapperNode [2020-10-14 23:21:32,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:21:32,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:21:32,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:21:32,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:21:32,584 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:21:32" (1/1) ... [2020-10-14 23:21:32,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:21:32" (1/1) ... [2020-10-14 23:21:32,600 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:21:32" (1/1) ... [2020-10-14 23:21:32,601 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:21:32" (1/1) ... [2020-10-14 23:21:32,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:21:32" (1/1) ... [2020-10-14 23:21:32,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:21:32" (1/1) ... [2020-10-14 23:21:32,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:21:32" (1/1) ... [2020-10-14 23:21:32,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:21:32,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:21:32,637 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:21:32,637 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:21:32,638 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:21:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:21:32,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:21:32,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:21:32,703 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:21:32,703 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 23:21:32,703 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 23:21:32,704 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 23:21:32,704 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 23:21:32,705 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 23:21:32,705 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 23:21:32,705 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 23:21:32,706 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 23:21:32,706 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 23:21:32,706 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 23:21:32,706 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 23:21:32,706 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 23:21:32,707 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 23:21:32,707 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 23:21:32,707 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 23:21:32,707 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 23:21:32,708 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 23:21:32,708 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 23:21:32,709 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 23:21:32,709 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 23:21:32,709 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 23:21:32,709 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 23:21:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 23:21:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 23:21:32,710 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 23:21:32,711 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 23:21:32,711 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 23:21:32,711 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 23:21:32,711 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 23:21:32,711 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 23:21:32,711 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 23:21:32,711 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 23:21:32,712 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 23:21:32,712 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 23:21:32,712 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 23:21:32,712 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 23:21:32,712 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 23:21:32,713 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 23:21:32,713 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 23:21:32,713 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 23:21:32,713 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 23:21:32,713 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 23:21:32,713 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 23:21:32,713 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 23:21:32,714 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 23:21:32,714 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 23:21:32,714 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 23:21:32,714 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 23:21:32,714 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 23:21:32,715 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 23:21:32,715 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 23:21:32,715 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 23:21:32,715 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 23:21:32,715 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 23:21:32,715 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 23:21:32,716 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 23:21:32,716 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 23:21:32,716 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 23:21:32,716 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 23:21:32,716 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 23:21:32,716 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 23:21:32,716 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 23:21:32,717 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 23:21:32,717 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:21:32,718 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 23:21:32,718 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 23:21:32,718 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 23:21:32,719 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 23:21:32,720 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 23:21:32,720 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 23:21:32,720 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 23:21:32,720 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 23:21:32,721 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 23:21:32,721 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 23:21:32,721 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 23:21:32,721 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 23:21:32,721 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 23:21:32,721 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 23:21:32,721 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 23:21:32,722 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 23:21:32,723 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 23:21:32,723 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 23:21:32,723 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 23:21:32,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 23:21:32,723 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 23:21:32,723 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 23:21:32,723 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 23:21:32,723 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 23:21:32,724 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 23:21:32,724 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 23:21:32,724 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 23:21:32,724 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 23:21:32,724 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 23:21:32,724 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 23:21:32,725 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 23:21:32,725 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 23:21:32,725 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 23:21:32,725 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 23:21:32,725 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 23:21:32,725 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 23:21:32,725 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 23:21:32,725 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 23:21:32,726 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 23:21:32,726 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:21:32,726 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:21:32,726 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:21:32,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 23:21:32,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 23:21:32,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:21:32,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 23:21:32,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:21:32,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:21:32,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:21:32,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:21:33,335 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:21:33,335 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-14 23:21:33,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:21:33 BoogieIcfgContainer [2020-10-14 23:21:33,340 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:21:33,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:21:33,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:21:33,345 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:21:33,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:21:31" (1/3) ... [2020-10-14 23:21:33,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dbe686c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:21:33, skipping insertion in model container [2020-10-14 23:21:33,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:21:32" (2/3) ... [2020-10-14 23:21:33,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dbe686c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:21:33, skipping insertion in model container [2020-10-14 23:21:33,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:21:33" (3/3) ... [2020-10-14 23:21:33,349 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-1.i [2020-10-14 23:21:33,359 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:21:33,367 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-10-14 23:21:33,381 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-14 23:21:33,401 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:21:33,402 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:21:33,402 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:21:33,402 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:21:33,402 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:21:33,402 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:21:33,403 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:21:33,403 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:21:33,421 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-10-14 23:21:33,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-14 23:21:33,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:33,428 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:33,428 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:33,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:33,433 INFO L82 PathProgramCache]: Analyzing trace with hash -742552803, now seen corresponding path program 1 times [2020-10-14 23:21:33,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:33,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781357749] [2020-10-14 23:21:33,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:33,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:33,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:33,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:33,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:33,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 23:21:33,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:21:33,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-14 23:21:33,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:33,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:33,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:21:33,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:33,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 23:21:33,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 23:21:33,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:33,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:33,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:33,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:33,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:33,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:33,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:21:33,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:33,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:33,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:33,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:33,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:33,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:33,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:33,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781357749] [2020-10-14 23:21:33,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:21:33,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 23:21:33,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219406314] [2020-10-14 23:21:33,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 23:21:33,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:33,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 23:21:33,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:21:33,978 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 5 states. [2020-10-14 23:21:34,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:34,163 INFO L93 Difference]: Finished difference Result 70 states and 113 transitions. [2020-10-14 23:21:34,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 23:21:34,165 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-14 23:21:34,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:34,176 INFO L225 Difference]: With dead ends: 70 [2020-10-14 23:21:34,176 INFO L226 Difference]: Without dead ends: 32 [2020-10-14 23:21:34,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:21:34,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-14 23:21:34,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2020-10-14 23:21:34,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-14 23:21:34,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-10-14 23:21:34,220 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 10 [2020-10-14 23:21:34,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:34,220 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-10-14 23:21:34,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 23:21:34,220 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-10-14 23:21:34,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-14 23:21:34,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:34,221 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:34,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:21:34,222 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:34,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:34,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1973625457, now seen corresponding path program 1 times [2020-10-14 23:21:34,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:34,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602942681] [2020-10-14 23:21:34,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:34,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:34,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:34,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:34,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:21:34,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:34,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 23:21:34,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:34,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:34,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:21:34,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:34,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:21:34,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:34,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:34,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:34,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:34,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:34,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:34,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:34,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:21:34,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:34,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:34,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:34,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:34,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:34,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:34,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:34,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602942681] [2020-10-14 23:21:34,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:21:34,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:21:34,428 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015417335] [2020-10-14 23:21:34,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:21:34,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:34,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:21:34,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:21:34,431 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 6 states. [2020-10-14 23:21:34,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:34,575 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2020-10-14 23:21:34,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:21:34,575 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-14 23:21:34,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:34,577 INFO L225 Difference]: With dead ends: 54 [2020-10-14 23:21:34,577 INFO L226 Difference]: Without dead ends: 52 [2020-10-14 23:21:34,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:21:34,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-14 23:21:34,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 36. [2020-10-14 23:21:34,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-14 23:21:34,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-10-14 23:21:34,588 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 14 [2020-10-14 23:21:34,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:34,588 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-10-14 23:21:34,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:21:34,588 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-10-14 23:21:34,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 23:21:34,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:34,589 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:34,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:21:34,590 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:34,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:34,590 INFO L82 PathProgramCache]: Analyzing trace with hash -954667545, now seen corresponding path program 1 times [2020-10-14 23:21:34,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:34,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1083376996] [2020-10-14 23:21:34,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:34,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:34,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:34,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:34,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 23:21:34,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:34,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-10-14 23:21:34,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:34,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:34,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:21:34,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:34,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 23:21:34,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:35,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:35,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:35,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:35,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:35,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:35,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:35,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:21:35,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:35,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:35,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:35,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:35,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:35,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:35,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:35,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1083376996] [2020-10-14 23:21:35,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:35,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 23:21:35,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067218274] [2020-10-14 23:21:35,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:21:35,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:35,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:21:35,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:21:35,145 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 8 states. [2020-10-14 23:21:35,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:35,404 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-10-14 23:21:35,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:21:35,404 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-10-14 23:21:35,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:35,406 INFO L225 Difference]: With dead ends: 39 [2020-10-14 23:21:35,406 INFO L226 Difference]: Without dead ends: 37 [2020-10-14 23:21:35,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:21:35,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-14 23:21:35,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 27. [2020-10-14 23:21:35,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-14 23:21:35,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-10-14 23:21:35,419 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 17 [2020-10-14 23:21:35,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:35,419 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-10-14 23:21:35,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 23:21:35,420 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-10-14 23:21:35,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 23:21:35,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:35,421 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:35,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:21:35,422 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:35,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:35,422 INFO L82 PathProgramCache]: Analyzing trace with hash 903516662, now seen corresponding path program 1 times [2020-10-14 23:21:35,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:35,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436889611] [2020-10-14 23:21:35,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:35,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:35,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:35,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:35,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:35,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 23:21:35,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:21:35,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 23:21:35,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:35,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:35,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:21:35,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:35,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 23:21:35,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:35,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:35,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:35,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:35,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:35,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:35,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:35,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:21:35,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:35,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:35,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:35,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:35,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:35,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:35,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:35,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1436889611] [2020-10-14 23:21:35,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:21:35,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:21:35,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051331903] [2020-10-14 23:21:35,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:21:35,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:35,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:21:35,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:21:35,659 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 6 states. [2020-10-14 23:21:35,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:35,780 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2020-10-14 23:21:35,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:21:35,780 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-10-14 23:21:35,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:35,781 INFO L225 Difference]: With dead ends: 62 [2020-10-14 23:21:35,781 INFO L226 Difference]: Without dead ends: 50 [2020-10-14 23:21:35,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:21:35,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-14 23:21:35,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 37. [2020-10-14 23:21:35,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-14 23:21:35,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-14 23:21:35,790 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 18 [2020-10-14 23:21:35,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:35,790 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-14 23:21:35,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:21:35,790 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-14 23:21:35,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 23:21:35,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:35,791 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:35,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:21:35,792 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:35,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:35,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1223911862, now seen corresponding path program 1 times [2020-10-14 23:21:35,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:35,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88081500] [2020-10-14 23:21:35,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:35,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:35,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:35,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:35,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 23:21:35,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:35,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 23:21:35,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:35,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:35,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:21:35,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:35,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:21:35,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:35,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:35,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:35,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:35,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:35,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:35,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:35,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:21:35,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:35,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:35,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:35,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:35,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:35,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:35,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:35,914 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88081500] [2020-10-14 23:21:35,914 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:35,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 23:21:35,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111050309] [2020-10-14 23:21:35,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:21:35,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:35,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:21:35,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:21:35,916 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 6 states. [2020-10-14 23:21:36,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:36,063 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2020-10-14 23:21:36,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:21:36,064 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-14 23:21:36,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:36,065 INFO L225 Difference]: With dead ends: 51 [2020-10-14 23:21:36,065 INFO L226 Difference]: Without dead ends: 29 [2020-10-14 23:21:36,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:21:36,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-14 23:21:36,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-14 23:21:36,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-14 23:21:36,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-10-14 23:21:36,076 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 21 [2020-10-14 23:21:36,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:36,076 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-10-14 23:21:36,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:21:36,076 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-10-14 23:21:36,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 23:21:36,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:36,077 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:36,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:21:36,078 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:36,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:36,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1696156082, now seen corresponding path program 1 times [2020-10-14 23:21:36,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:36,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [456482754] [2020-10-14 23:21:36,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:36,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:36,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:36,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:36,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:36,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:36,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 23:21:36,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:21:36,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 416 [2020-10-14 23:21:36,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:36,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:36,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:21:36,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:36,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:21:36,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:36,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:36,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:36,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:36,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:36,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:36,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:36,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:21:36,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:36,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:36,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:36,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:36,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:36,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:36,603 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:36,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [456482754] [2020-10-14 23:21:36,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:36,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 23:21:36,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032725855] [2020-10-14 23:21:36,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:21:36,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:36,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:21:36,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:21:36,606 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 8 states. [2020-10-14 23:21:36,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:36,868 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2020-10-14 23:21:36,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:21:36,869 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-10-14 23:21:36,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:36,870 INFO L225 Difference]: With dead ends: 44 [2020-10-14 23:21:36,870 INFO L226 Difference]: Without dead ends: 42 [2020-10-14 23:21:36,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:21:36,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-14 23:21:36,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 32. [2020-10-14 23:21:36,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-14 23:21:36,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-14 23:21:36,878 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 21 [2020-10-14 23:21:36,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:36,878 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-14 23:21:36,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 23:21:36,878 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-14 23:21:36,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 23:21:36,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:36,880 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:36,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 23:21:36,880 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:36,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:36,881 INFO L82 PathProgramCache]: Analyzing trace with hash 108390666, now seen corresponding path program 1 times [2020-10-14 23:21:36,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:36,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014821254] [2020-10-14 23:21:36,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:36,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:36,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:36,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:37,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:37,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 23:21:37,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:21:37,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 379 [2020-10-14 23:21:37,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:37,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:37,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:21:37,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:37,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 23:21:37,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:37,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:37,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:37,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:37,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:37,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:37,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:21:37,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:37,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:37,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:37,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:37,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:37,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:37,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:37,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014821254] [2020-10-14 23:21:37,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:37,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 23:21:37,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93837228] [2020-10-14 23:21:37,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:21:37,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:37,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:21:37,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:21:37,475 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 8 states. [2020-10-14 23:21:37,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:37,692 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2020-10-14 23:21:37,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:21:37,693 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-10-14 23:21:37,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:37,694 INFO L225 Difference]: With dead ends: 45 [2020-10-14 23:21:37,694 INFO L226 Difference]: Without dead ends: 32 [2020-10-14 23:21:37,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:21:37,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-14 23:21:37,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-14 23:21:37,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-14 23:21:37,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-10-14 23:21:37,700 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 24 [2020-10-14 23:21:37,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:37,700 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-10-14 23:21:37,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 23:21:37,701 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-10-14 23:21:37,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 23:21:37,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:37,701 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:37,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 23:21:37,702 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:37,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:37,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1223476830, now seen corresponding path program 1 times [2020-10-14 23:21:37,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:37,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782629866] [2020-10-14 23:21:37,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:37,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:37,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:37,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:37,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 23:21:37,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:37,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-14 23:21:37,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:37,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:37,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:21:37,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:37,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:21:37,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:37,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:37,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:37,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:37,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:37,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:37,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:37,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:21:37,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:37,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:37,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:37,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:37,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:37,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:37,962 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:37,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782629866] [2020-10-14 23:21:37,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:37,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:21:37,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769619729] [2020-10-14 23:21:37,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:21:37,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:37,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:21:37,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:21:37,964 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 9 states. [2020-10-14 23:21:38,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:38,358 INFO L93 Difference]: Finished difference Result 85 states and 96 transitions. [2020-10-14 23:21:38,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:21:38,359 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-10-14 23:21:38,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:38,362 INFO L225 Difference]: With dead ends: 85 [2020-10-14 23:21:38,362 INFO L226 Difference]: Without dead ends: 83 [2020-10-14 23:21:38,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:21:38,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-14 23:21:38,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 46. [2020-10-14 23:21:38,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-14 23:21:38,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2020-10-14 23:21:38,374 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 24 [2020-10-14 23:21:38,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:38,374 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2020-10-14 23:21:38,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:21:38,374 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2020-10-14 23:21:38,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 23:21:38,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:38,376 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:38,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 23:21:38,376 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:38,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:38,377 INFO L82 PathProgramCache]: Analyzing trace with hash -2050422112, now seen corresponding path program 1 times [2020-10-14 23:21:38,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:38,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706748671] [2020-10-14 23:21:38,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:38,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:38,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:38,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:38,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 23:21:38,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:38,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-14 23:21:38,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:38,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:38,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:21:38,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:38,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:21:38,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:38,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:38,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:38,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:38,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:38,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:38,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:38,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:21:38,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:38,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:38,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:38,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:38,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:38,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:38,762 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:38,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706748671] [2020-10-14 23:21:38,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:38,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:21:38,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360963142] [2020-10-14 23:21:38,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:21:38,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:38,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:21:38,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:21:38,764 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand 9 states. [2020-10-14 23:21:39,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:39,145 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-10-14 23:21:39,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:21:39,146 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-10-14 23:21:39,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:39,147 INFO L225 Difference]: With dead ends: 84 [2020-10-14 23:21:39,147 INFO L226 Difference]: Without dead ends: 72 [2020-10-14 23:21:39,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:21:39,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-14 23:21:39,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 57. [2020-10-14 23:21:39,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-14 23:21:39,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2020-10-14 23:21:39,155 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 24 [2020-10-14 23:21:39,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:39,155 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2020-10-14 23:21:39,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:21:39,156 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2020-10-14 23:21:39,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 23:21:39,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:39,157 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 23:21:39,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 23:21:39,157 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:39,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:39,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1509760762, now seen corresponding path program 1 times [2020-10-14 23:21:39,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:39,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [576525328] [2020-10-14 23:21:39,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:39,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:39,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:39,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:39,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 23:21:39,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:39,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-14 23:21:39,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:39,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:39,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:21:39,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:39,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:21:39,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:39,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:39,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:39,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:39,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:39,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:39,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:39,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:21:39,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:39,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:39,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:39,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:39,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:39,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:39,645 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:39,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [576525328] [2020-10-14 23:21:39,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:39,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 23:21:39,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566587392] [2020-10-14 23:21:39,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 23:21:39,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:39,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 23:21:39,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:21:39,648 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 10 states. [2020-10-14 23:21:40,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:40,079 INFO L93 Difference]: Finished difference Result 85 states and 95 transitions. [2020-10-14 23:21:40,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:21:40,080 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2020-10-14 23:21:40,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:40,081 INFO L225 Difference]: With dead ends: 85 [2020-10-14 23:21:40,081 INFO L226 Difference]: Without dead ends: 83 [2020-10-14 23:21:40,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:21:40,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-14 23:21:40,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 60. [2020-10-14 23:21:40,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-14 23:21:40,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2020-10-14 23:21:40,097 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 27 [2020-10-14 23:21:40,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:40,097 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2020-10-14 23:21:40,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 23:21:40,097 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2020-10-14 23:21:40,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 23:21:40,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:40,102 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:40,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 23:21:40,103 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:40,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:40,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1670120370, now seen corresponding path program 2 times [2020-10-14 23:21:40,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:40,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10057686] [2020-10-14 23:21:40,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:40,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:40,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:40,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:40,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:40,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 23:21:40,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:21:40,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 420 [2020-10-14 23:21:40,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:40,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:40,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:21:40,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:40,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:21:40,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:40,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:40,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:40,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:40,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:40,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:40,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:40,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:21:40,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:40,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:40,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:40,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:40,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:40,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:40,685 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:40,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10057686] [2020-10-14 23:21:40,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:40,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:21:40,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864208238] [2020-10-14 23:21:40,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:21:40,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:40,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:21:40,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:21:40,688 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand 9 states. [2020-10-14 23:21:41,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:41,070 INFO L93 Difference]: Finished difference Result 87 states and 97 transitions. [2020-10-14 23:21:41,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 23:21:41,071 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-10-14 23:21:41,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:41,072 INFO L225 Difference]: With dead ends: 87 [2020-10-14 23:21:41,072 INFO L226 Difference]: Without dead ends: 75 [2020-10-14 23:21:41,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:21:41,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-14 23:21:41,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 60. [2020-10-14 23:21:41,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-14 23:21:41,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2020-10-14 23:21:41,079 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 27 [2020-10-14 23:21:41,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:41,080 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2020-10-14 23:21:41,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:21:41,080 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2020-10-14 23:21:41,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 23:21:41,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:41,081 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:41,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 23:21:41,081 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:41,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:41,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1148340406, now seen corresponding path program 3 times [2020-10-14 23:21:41,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:41,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370986322] [2020-10-14 23:21:41,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:41,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:41,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:41,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:41,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 23:21:41,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:41,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-14 23:21:41,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:41,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:41,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:21:41,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:41,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:21:41,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:41,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:41,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:41,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:41,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:41,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:41,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:41,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:21:41,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:41,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:41,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:41,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:41,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:41,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:41,528 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:41,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370986322] [2020-10-14 23:21:41,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:41,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:21:41,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171451084] [2020-10-14 23:21:41,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:21:41,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:41,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:21:41,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:21:41,530 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand 11 states. [2020-10-14 23:21:41,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:41,982 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2020-10-14 23:21:41,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 23:21:41,982 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-14 23:21:41,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:41,983 INFO L225 Difference]: With dead ends: 91 [2020-10-14 23:21:41,983 INFO L226 Difference]: Without dead ends: 89 [2020-10-14 23:21:41,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:21:41,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-14 23:21:41,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 66. [2020-10-14 23:21:41,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-14 23:21:41,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2020-10-14 23:21:41,991 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 27 [2020-10-14 23:21:41,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:41,992 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2020-10-14 23:21:41,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:21:41,992 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2020-10-14 23:21:41,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 23:21:41,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:41,993 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:41,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 23:21:41,993 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:41,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:41,994 INFO L82 PathProgramCache]: Analyzing trace with hash 18823372, now seen corresponding path program 2 times [2020-10-14 23:21:41,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:41,994 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799909070] [2020-10-14 23:21:41,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:42,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:42,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:42,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:42,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 23:21:42,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:42,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-14 23:21:42,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:42,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:42,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:21:42,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:42,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 23:21:42,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:42,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:42,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:42,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:42,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:42,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:42,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:21:42,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:42,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:42,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:42,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:42,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:42,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:42,236 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:42,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799909070] [2020-10-14 23:21:42,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:42,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:21:42,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944562656] [2020-10-14 23:21:42,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:21:42,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:42,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:21:42,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:21:42,239 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand 9 states. [2020-10-14 23:21:42,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:42,546 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2020-10-14 23:21:42,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:21:42,547 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-10-14 23:21:42,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:42,548 INFO L225 Difference]: With dead ends: 80 [2020-10-14 23:21:42,548 INFO L226 Difference]: Without dead ends: 55 [2020-10-14 23:21:42,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:21:42,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-14 23:21:42,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-14 23:21:42,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-14 23:21:42,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2020-10-14 23:21:42,557 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 27 [2020-10-14 23:21:42,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:42,557 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2020-10-14 23:21:42,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:21:42,558 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2020-10-14 23:21:42,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 23:21:42,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:42,559 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:42,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 23:21:42,559 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:42,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:42,559 INFO L82 PathProgramCache]: Analyzing trace with hash 798514594, now seen corresponding path program 2 times [2020-10-14 23:21:42,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:42,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952528931] [2020-10-14 23:21:42,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:42,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:42,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:43,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:43,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 23:21:43,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:43,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 493 [2020-10-14 23:21:43,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:43,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:43,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:21:43,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:43,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 23:21:43,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:43,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:43,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:43,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:43,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:43,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:43,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:43,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:21:43,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:43,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:43,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:43,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:43,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:43,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:43,431 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:43,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952528931] [2020-10-14 23:21:43,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:43,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:21:43,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973989905] [2020-10-14 23:21:43,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:21:43,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:43,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:21:43,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:21:43,434 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand 12 states. [2020-10-14 23:21:44,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:44,070 INFO L93 Difference]: Finished difference Result 99 states and 113 transitions. [2020-10-14 23:21:44,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:21:44,070 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-10-14 23:21:44,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:44,071 INFO L225 Difference]: With dead ends: 99 [2020-10-14 23:21:44,071 INFO L226 Difference]: Without dead ends: 97 [2020-10-14 23:21:44,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:21:44,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-14 23:21:44,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 69. [2020-10-14 23:21:44,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-14 23:21:44,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2020-10-14 23:21:44,083 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 30 [2020-10-14 23:21:44,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:44,083 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2020-10-14 23:21:44,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:21:44,083 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2020-10-14 23:21:44,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 23:21:44,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:44,084 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:44,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 23:21:44,086 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:44,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:44,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1913600758, now seen corresponding path program 4 times [2020-10-14 23:21:44,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:44,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202343203] [2020-10-14 23:21:44,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:44,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:44,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:44,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:44,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:45,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:45,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 23:21:45,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:21:45,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1172 [2020-10-14 23:21:45,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:45,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:45,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:21:45,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:45,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 23:21:45,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:45,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:45,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:45,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:45,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:45,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:45,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:45,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:21:45,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:45,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:45,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:45,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:45,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:45,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:45,619 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:45,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202343203] [2020-10-14 23:21:45,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:45,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:21:45,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769144688] [2020-10-14 23:21:45,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:21:45,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:45,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:21:45,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:21:45,621 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand 11 states. [2020-10-14 23:21:46,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:46,200 INFO L93 Difference]: Finished difference Result 117 states and 134 transitions. [2020-10-14 23:21:46,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:21:46,200 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-10-14 23:21:46,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:46,201 INFO L225 Difference]: With dead ends: 117 [2020-10-14 23:21:46,202 INFO L226 Difference]: Without dead ends: 105 [2020-10-14 23:21:46,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:21:46,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-14 23:21:46,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 72. [2020-10-14 23:21:46,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-14 23:21:46,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 82 transitions. [2020-10-14 23:21:46,215 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 82 transitions. Word has length 30 [2020-10-14 23:21:46,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:46,215 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 82 transitions. [2020-10-14 23:21:46,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:21:46,215 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 82 transitions. [2020-10-14 23:21:46,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 23:21:46,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:46,216 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:46,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 23:21:46,216 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:46,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:46,217 INFO L82 PathProgramCache]: Analyzing trace with hash 579659876, now seen corresponding path program 1 times [2020-10-14 23:21:46,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:46,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1099104293] [2020-10-14 23:21:46,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:46,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:46,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:46,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:46,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 23:21:46,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:46,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-14 23:21:46,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:46,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:46,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:21:46,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:46,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 23:21:46,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:46,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:46,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:46,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:46,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:46,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:46,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:46,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:46,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:46,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:46,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:46,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:46,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:46,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:46,842 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:46,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1099104293] [2020-10-14 23:21:46,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:46,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:21:46,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976534726] [2020-10-14 23:21:46,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:21:46,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:46,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:21:46,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:21:46,847 INFO L87 Difference]: Start difference. First operand 72 states and 82 transitions. Second operand 11 states. [2020-10-14 23:21:47,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:47,701 INFO L93 Difference]: Finished difference Result 116 states and 133 transitions. [2020-10-14 23:21:47,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 23:21:47,702 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-10-14 23:21:47,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:47,703 INFO L225 Difference]: With dead ends: 116 [2020-10-14 23:21:47,703 INFO L226 Difference]: Without dead ends: 103 [2020-10-14 23:21:47,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:21:47,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-14 23:21:47,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 86. [2020-10-14 23:21:47,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-14 23:21:47,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 98 transitions. [2020-10-14 23:21:47,712 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 98 transitions. Word has length 30 [2020-10-14 23:21:47,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:47,713 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 98 transitions. [2020-10-14 23:21:47,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:21:47,713 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 98 transitions. [2020-10-14 23:21:47,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 23:21:47,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:47,713 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:47,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 23:21:47,714 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:47,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:47,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1694746040, now seen corresponding path program 1 times [2020-10-14 23:21:47,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:47,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954732724] [2020-10-14 23:21:47,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:47,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:47,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:48,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:48,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 23:21:48,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:48,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-10-14 23:21:48,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:48,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:48,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:21:48,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:48,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 23:21:48,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:48,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:48,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:48,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:48,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:48,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:48,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:48,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:21:48,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:48,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:48,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:48,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:48,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:48,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:48,246 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:48,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954732724] [2020-10-14 23:21:48,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:48,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:21:48,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659582544] [2020-10-14 23:21:48,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:21:48,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:48,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:21:48,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:21:48,251 INFO L87 Difference]: Start difference. First operand 86 states and 98 transitions. Second operand 11 states. [2020-10-14 23:21:48,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:48,915 INFO L93 Difference]: Finished difference Result 148 states and 166 transitions. [2020-10-14 23:21:48,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:21:48,915 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-10-14 23:21:48,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:48,917 INFO L225 Difference]: With dead ends: 148 [2020-10-14 23:21:48,917 INFO L226 Difference]: Without dead ends: 146 [2020-10-14 23:21:48,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:21:48,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-14 23:21:48,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 97. [2020-10-14 23:21:48,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-14 23:21:48,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 110 transitions. [2020-10-14 23:21:48,928 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 110 transitions. Word has length 30 [2020-10-14 23:21:48,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:48,929 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 110 transitions. [2020-10-14 23:21:48,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:21:48,929 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 110 transitions. [2020-10-14 23:21:48,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 23:21:48,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:48,930 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:48,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 23:21:48,930 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:48,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:48,931 INFO L82 PathProgramCache]: Analyzing trace with hash -911277514, now seen corresponding path program 3 times [2020-10-14 23:21:48,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:48,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1739653363] [2020-10-14 23:21:48,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:48,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:49,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:49,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 23:21:49,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:49,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-14 23:21:49,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:49,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:49,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:21:49,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:49,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 23:21:49,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:49,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:49,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:49,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:49,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:49,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:49,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:49,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:21:49,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:49,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:49,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:49,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:49,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:49,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:49,327 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:49,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1739653363] [2020-10-14 23:21:49,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:49,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:21:49,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054687954] [2020-10-14 23:21:49,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:21:49,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:49,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:21:49,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:21:49,329 INFO L87 Difference]: Start difference. First operand 97 states and 110 transitions. Second operand 11 states. [2020-10-14 23:21:49,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:49,858 INFO L93 Difference]: Finished difference Result 141 states and 157 transitions. [2020-10-14 23:21:49,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:21:49,859 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-10-14 23:21:49,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:49,861 INFO L225 Difference]: With dead ends: 141 [2020-10-14 23:21:49,861 INFO L226 Difference]: Without dead ends: 129 [2020-10-14 23:21:49,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:21:49,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-14 23:21:49,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 100. [2020-10-14 23:21:49,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-14 23:21:49,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 113 transitions. [2020-10-14 23:21:49,871 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 113 transitions. Word has length 30 [2020-10-14 23:21:49,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:49,872 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 113 transitions. [2020-10-14 23:21:49,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:21:49,872 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 113 transitions. [2020-10-14 23:21:49,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 23:21:49,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:49,873 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:49,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 23:21:49,873 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:49,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:49,873 INFO L82 PathProgramCache]: Analyzing trace with hash 499848564, now seen corresponding path program 1 times [2020-10-14 23:21:49,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:49,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1899412214] [2020-10-14 23:21:49,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:49,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:49,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:50,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:50,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 23:21:50,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:50,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-14 23:21:50,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:50,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:50,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:21:50,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:50,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 23:21:50,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:50,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:50,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:50,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:50,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:50,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:50,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:50,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:21:50,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:50,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:50,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:50,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:50,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:50,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:50,309 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:50,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1899412214] [2020-10-14 23:21:50,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:50,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 23:21:50,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009222991] [2020-10-14 23:21:50,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 23:21:50,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:50,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 23:21:50,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:21:50,311 INFO L87 Difference]: Start difference. First operand 100 states and 113 transitions. Second operand 10 states. [2020-10-14 23:21:50,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:50,720 INFO L93 Difference]: Finished difference Result 130 states and 144 transitions. [2020-10-14 23:21:50,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:21:50,720 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2020-10-14 23:21:50,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:50,722 INFO L225 Difference]: With dead ends: 130 [2020-10-14 23:21:50,722 INFO L226 Difference]: Without dead ends: 100 [2020-10-14 23:21:50,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:21:50,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-14 23:21:50,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2020-10-14 23:21:50,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-14 23:21:50,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 112 transitions. [2020-10-14 23:21:50,732 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 112 transitions. Word has length 32 [2020-10-14 23:21:50,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:50,732 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 112 transitions. [2020-10-14 23:21:50,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 23:21:50,733 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 112 transitions. [2020-10-14 23:21:50,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 23:21:50,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:50,733 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:50,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 23:21:50,734 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:50,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:50,734 INFO L82 PathProgramCache]: Analyzing trace with hash -862405126, now seen corresponding path program 3 times [2020-10-14 23:21:50,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:50,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321821393] [2020-10-14 23:21:50,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:50,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:50,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:51,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:51,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 23:21:51,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:51,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 516 [2020-10-14 23:21:51,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:51,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:51,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:21:51,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:51,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 23:21:51,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:51,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:51,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:51,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:51,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:51,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:51,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:51,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:51,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:51,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:51,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:51,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:51,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:51,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:51,824 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:51,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321821393] [2020-10-14 23:21:51,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:51,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:21:51,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383622205] [2020-10-14 23:21:51,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:21:51,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:51,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:21:51,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:21:51,826 INFO L87 Difference]: Start difference. First operand 100 states and 112 transitions. Second operand 14 states. [2020-10-14 23:21:52,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:52,371 INFO L93 Difference]: Finished difference Result 120 states and 133 transitions. [2020-10-14 23:21:52,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:21:52,372 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 33 [2020-10-14 23:21:52,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:52,373 INFO L225 Difference]: With dead ends: 120 [2020-10-14 23:21:52,374 INFO L226 Difference]: Without dead ends: 118 [2020-10-14 23:21:52,374 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:21:52,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-14 23:21:52,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 86. [2020-10-14 23:21:52,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-14 23:21:52,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 96 transitions. [2020-10-14 23:21:52,381 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 96 transitions. Word has length 33 [2020-10-14 23:21:52,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:52,382 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 96 transitions. [2020-10-14 23:21:52,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:21:52,382 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 96 transitions. [2020-10-14 23:21:52,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 23:21:52,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:52,382 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:52,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 23:21:52,382 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:52,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:52,383 INFO L82 PathProgramCache]: Analyzing trace with hash 842705248, now seen corresponding path program 2 times [2020-10-14 23:21:52,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:52,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706148156] [2020-10-14 23:21:52,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:52,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:52,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:52,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 23:21:52,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:52,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-10-14 23:21:52,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:52,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:52,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:21:52,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:52,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 23:21:52,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:52,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:52,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:52,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:52,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:52,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:52,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:52,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:21:52,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:52,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:52,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:52,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:52,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:52,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:52,913 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:52,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706148156] [2020-10-14 23:21:52,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:52,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:21:52,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345512726] [2020-10-14 23:21:52,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:21:52,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:52,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:21:52,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:21:52,915 INFO L87 Difference]: Start difference. First operand 86 states and 96 transitions. Second operand 12 states. [2020-10-14 23:21:53,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:53,653 INFO L93 Difference]: Finished difference Result 115 states and 128 transitions. [2020-10-14 23:21:53,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 23:21:53,654 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-10-14 23:21:53,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:53,655 INFO L225 Difference]: With dead ends: 115 [2020-10-14 23:21:53,655 INFO L226 Difference]: Without dead ends: 113 [2020-10-14 23:21:53,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:21:53,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-14 23:21:53,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 91. [2020-10-14 23:21:53,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-14 23:21:53,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 102 transitions. [2020-10-14 23:21:53,669 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 102 transitions. Word has length 33 [2020-10-14 23:21:53,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:53,670 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 102 transitions. [2020-10-14 23:21:53,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:21:53,670 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 102 transitions. [2020-10-14 23:21:53,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 23:21:53,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:53,671 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:53,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 23:21:53,671 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:53,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:53,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1957791412, now seen corresponding path program 2 times [2020-10-14 23:21:53,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:53,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178840241] [2020-10-14 23:21:53,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:53,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:53,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:53,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:54,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:54,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 23:21:54,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:21:54,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 611 [2020-10-14 23:21:54,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:54,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:54,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:21:54,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:54,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 23:21:54,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:54,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:54,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:54,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:54,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:54,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:54,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:54,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:54,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:54,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:54,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:54,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:54,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:54,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:54,578 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:54,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1178840241] [2020-10-14 23:21:54,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:54,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:21:54,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201458276] [2020-10-14 23:21:54,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:21:54,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:54,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:21:54,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:21:54,580 INFO L87 Difference]: Start difference. First operand 91 states and 102 transitions. Second operand 11 states. [2020-10-14 23:21:55,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:55,120 INFO L93 Difference]: Finished difference Result 119 states and 132 transitions. [2020-10-14 23:21:55,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:21:55,123 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-10-14 23:21:55,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:55,124 INFO L225 Difference]: With dead ends: 119 [2020-10-14 23:21:55,124 INFO L226 Difference]: Without dead ends: 107 [2020-10-14 23:21:55,125 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:21:55,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-14 23:21:55,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 86. [2020-10-14 23:21:55,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-14 23:21:55,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 96 transitions. [2020-10-14 23:21:55,137 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 96 transitions. Word has length 33 [2020-10-14 23:21:55,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:55,138 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 96 transitions. [2020-10-14 23:21:55,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:21:55,138 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 96 transitions. [2020-10-14 23:21:55,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 23:21:55,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:55,139 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:55,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 23:21:55,140 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:55,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:55,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1002953736, now seen corresponding path program 3 times [2020-10-14 23:21:55,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:55,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1569514094] [2020-10-14 23:21:55,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:55,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:55,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:55,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:55,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 23:21:55,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:55,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 416 [2020-10-14 23:21:55,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:55,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:55,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:21:55,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:55,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 23:21:55,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:56,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:56,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:56,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:56,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:56,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:56,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:56,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:56,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:56,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:56,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:56,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:56,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:56,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:56,094 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:56,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1569514094] [2020-10-14 23:21:56,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:56,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:21:56,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878276549] [2020-10-14 23:21:56,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:21:56,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:56,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:21:56,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:21:56,096 INFO L87 Difference]: Start difference. First operand 86 states and 96 transitions. Second operand 12 states. [2020-10-14 23:21:57,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:57,002 INFO L93 Difference]: Finished difference Result 123 states and 136 transitions. [2020-10-14 23:21:57,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:21:57,003 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-10-14 23:21:57,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:57,004 INFO L225 Difference]: With dead ends: 123 [2020-10-14 23:21:57,004 INFO L226 Difference]: Without dead ends: 110 [2020-10-14 23:21:57,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:21:57,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-14 23:21:57,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 80. [2020-10-14 23:21:57,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-14 23:21:57,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2020-10-14 23:21:57,016 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 33 [2020-10-14 23:21:57,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:57,016 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2020-10-14 23:21:57,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:21:57,016 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2020-10-14 23:21:57,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 23:21:57,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:57,017 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:57,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 23:21:57,017 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:57,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:57,017 INFO L82 PathProgramCache]: Analyzing trace with hash 112132428, now seen corresponding path program 3 times [2020-10-14 23:21:57,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:57,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [461654617] [2020-10-14 23:21:57,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:57,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:57,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:57,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:57,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 23:21:57,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:57,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 439 [2020-10-14 23:21:57,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:57,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:57,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:21:57,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:57,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 23:21:57,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:57,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:57,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:57,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:57,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:57,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:57,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:57,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:21:57,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:57,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:57,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:57,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:57,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:57,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:57,774 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:57,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [461654617] [2020-10-14 23:21:57,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:57,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:21:57,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148441549] [2020-10-14 23:21:57,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:21:57,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:57,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:21:57,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:21:57,777 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand 12 states. [2020-10-14 23:21:58,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:58,717 INFO L93 Difference]: Finished difference Result 124 states and 136 transitions. [2020-10-14 23:21:58,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:21:58,718 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-10-14 23:21:58,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:58,719 INFO L225 Difference]: With dead ends: 124 [2020-10-14 23:21:58,720 INFO L226 Difference]: Without dead ends: 122 [2020-10-14 23:21:58,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:21:58,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-14 23:21:58,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 89. [2020-10-14 23:21:58,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-14 23:21:58,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 99 transitions. [2020-10-14 23:21:58,730 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 99 transitions. Word has length 33 [2020-10-14 23:21:58,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:58,730 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 99 transitions. [2020-10-14 23:21:58,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:21:58,730 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 99 transitions. [2020-10-14 23:21:58,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 23:21:58,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:58,731 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:58,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 23:21:58,731 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:58,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:58,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1738936694, now seen corresponding path program 4 times [2020-10-14 23:21:58,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:58,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413099901] [2020-10-14 23:21:58,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:58,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:58,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:58,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:58,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 23:21:58,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:58,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-14 23:21:58,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:58,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:58,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:21:58,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:58,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:21:58,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:59,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:59,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:59,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:59,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:59,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:59,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:59,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:21:59,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:59,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:59,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:59,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:59,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:59,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:59,143 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:59,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413099901] [2020-10-14 23:21:59,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:59,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:21:59,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911000274] [2020-10-14 23:21:59,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:21:59,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:59,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:21:59,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:21:59,146 INFO L87 Difference]: Start difference. First operand 89 states and 99 transitions. Second operand 11 states. [2020-10-14 23:21:59,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:59,782 INFO L93 Difference]: Finished difference Result 103 states and 114 transitions. [2020-10-14 23:21:59,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 23:21:59,782 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-10-14 23:21:59,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:59,783 INFO L225 Difference]: With dead ends: 103 [2020-10-14 23:21:59,783 INFO L226 Difference]: Without dead ends: 75 [2020-10-14 23:21:59,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:21:59,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-14 23:21:59,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-10-14 23:21:59,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-14 23:21:59,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 84 transitions. [2020-10-14 23:21:59,792 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 84 transitions. Word has length 33 [2020-10-14 23:21:59,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:59,792 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 84 transitions. [2020-10-14 23:21:59,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:21:59,792 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 84 transitions. [2020-10-14 23:21:59,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 23:21:59,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:59,793 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:59,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 23:21:59,793 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:59,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:59,794 INFO L82 PathProgramCache]: Analyzing trace with hash 2083831756, now seen corresponding path program 2 times [2020-10-14 23:21:59,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:59,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875299568] [2020-10-14 23:21:59,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:59,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:59,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:00,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:00,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 23:22:00,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:00,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-10-14 23:22:00,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:00,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:00,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:22:00,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:00,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 23:22:00,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:00,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:00,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:00,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:00,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:00,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:00,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:00,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:22:00,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:00,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:00,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:00,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:00,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:00,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:22:00,385 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:00,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875299568] [2020-10-14 23:22:00,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:00,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:22:00,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814059574] [2020-10-14 23:22:00,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:22:00,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:00,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:22:00,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:22:00,387 INFO L87 Difference]: Start difference. First operand 75 states and 84 transitions. Second operand 13 states. [2020-10-14 23:22:01,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:01,419 INFO L93 Difference]: Finished difference Result 202 states and 225 transitions. [2020-10-14 23:22:01,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 23:22:01,419 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 35 [2020-10-14 23:22:01,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:01,421 INFO L225 Difference]: With dead ends: 202 [2020-10-14 23:22:01,421 INFO L226 Difference]: Without dead ends: 200 [2020-10-14 23:22:01,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:22:01,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-14 23:22:01,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 111. [2020-10-14 23:22:01,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-14 23:22:01,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 125 transitions. [2020-10-14 23:22:01,432 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 125 transitions. Word has length 35 [2020-10-14 23:22:01,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:01,433 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 125 transitions. [2020-10-14 23:22:01,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:22:01,433 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 125 transitions. [2020-10-14 23:22:01,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 23:22:01,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:01,434 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:01,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 23:22:01,434 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:01,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:01,434 INFO L82 PathProgramCache]: Analyzing trace with hash -2077122034, now seen corresponding path program 1 times [2020-10-14 23:22:01,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:01,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171000297] [2020-10-14 23:22:01,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:01,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:01,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:01,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:01,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 23:22:01,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:01,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-10-14 23:22:01,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:01,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:01,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:22:01,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:01,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 23:22:01,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:02,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:02,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:02,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:02,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:02,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:02,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:02,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:02,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:02,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:02,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:02,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:02,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:02,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:02,087 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:02,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171000297] [2020-10-14 23:22:02,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:02,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:22:02,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707381471] [2020-10-14 23:22:02,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:22:02,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:02,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:22:02,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:22:02,089 INFO L87 Difference]: Start difference. First operand 111 states and 125 transitions. Second operand 13 states. [2020-10-14 23:22:02,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:02,928 INFO L93 Difference]: Finished difference Result 195 states and 217 transitions. [2020-10-14 23:22:02,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 23:22:02,929 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 35 [2020-10-14 23:22:02,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:02,930 INFO L225 Difference]: With dead ends: 195 [2020-10-14 23:22:02,930 INFO L226 Difference]: Without dead ends: 183 [2020-10-14 23:22:02,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:22:02,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-14 23:22:02,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 148. [2020-10-14 23:22:02,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-14 23:22:02,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 165 transitions. [2020-10-14 23:22:02,944 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 165 transitions. Word has length 35 [2020-10-14 23:22:02,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:02,945 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 165 transitions. [2020-10-14 23:22:02,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:22:02,945 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 165 transitions. [2020-10-14 23:22:02,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:22:02,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:02,946 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:02,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 23:22:02,946 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:02,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:02,946 INFO L82 PathProgramCache]: Analyzing trace with hash -943401652, now seen corresponding path program 4 times [2020-10-14 23:22:02,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:02,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993184006] [2020-10-14 23:22:02,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:02,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:03,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:03,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:03,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 23:22:03,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:03,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 471 [2020-10-14 23:22:03,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:03,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:03,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:22:03,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:03,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 23:22:03,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:03,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:03,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:03,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:03,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:03,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:03,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:03,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:22:03,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:03,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:03,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:03,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:03,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:03,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:03,948 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:03,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993184006] [2020-10-14 23:22:03,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:03,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:22:03,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521617985] [2020-10-14 23:22:03,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:22:03,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:03,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:22:03,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:22:03,950 INFO L87 Difference]: Start difference. First operand 148 states and 165 transitions. Second operand 14 states. [2020-10-14 23:22:04,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:04,927 INFO L93 Difference]: Finished difference Result 197 states and 219 transitions. [2020-10-14 23:22:04,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:22:04,927 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 36 [2020-10-14 23:22:04,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:04,929 INFO L225 Difference]: With dead ends: 197 [2020-10-14 23:22:04,929 INFO L226 Difference]: Without dead ends: 195 [2020-10-14 23:22:04,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:22:04,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-14 23:22:04,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 165. [2020-10-14 23:22:04,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-14 23:22:04,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 185 transitions. [2020-10-14 23:22:04,948 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 185 transitions. Word has length 36 [2020-10-14 23:22:04,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:04,948 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 185 transitions. [2020-10-14 23:22:04,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:22:04,948 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 185 transitions. [2020-10-14 23:22:04,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:22:04,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:04,949 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:04,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 23:22:04,950 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:04,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:04,950 INFO L82 PathProgramCache]: Analyzing trace with hash 171684512, now seen corresponding path program 4 times [2020-10-14 23:22:04,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:04,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787764820] [2020-10-14 23:22:04,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:04,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:04,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:05,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:05,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:05,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:05,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 23:22:05,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:22:05,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 791 [2020-10-14 23:22:05,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:05,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:05,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:22:05,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:05,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 23:22:05,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:06,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:06,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:06,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:06,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:06,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:06,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:06,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:06,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:06,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:06,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:06,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:06,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:06,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:22:06,138 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:06,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787764820] [2020-10-14 23:22:06,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:06,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:22:06,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067021920] [2020-10-14 23:22:06,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:22:06,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:06,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:22:06,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:22:06,140 INFO L87 Difference]: Start difference. First operand 165 states and 185 transitions. Second operand 12 states. [2020-10-14 23:22:06,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:06,711 INFO L93 Difference]: Finished difference Result 198 states and 220 transitions. [2020-10-14 23:22:06,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 23:22:06,716 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 36 [2020-10-14 23:22:06,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:06,718 INFO L225 Difference]: With dead ends: 198 [2020-10-14 23:22:06,718 INFO L226 Difference]: Without dead ends: 186 [2020-10-14 23:22:06,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:22:06,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-14 23:22:06,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 149. [2020-10-14 23:22:06,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-14 23:22:06,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 167 transitions. [2020-10-14 23:22:06,732 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 167 transitions. Word has length 36 [2020-10-14 23:22:06,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:06,732 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 167 transitions. [2020-10-14 23:22:06,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:22:06,733 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 167 transitions. [2020-10-14 23:22:06,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:22:06,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:06,733 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:06,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 23:22:06,734 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:06,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:06,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1083950262, now seen corresponding path program 5 times [2020-10-14 23:22:06,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:06,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047659093] [2020-10-14 23:22:06,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:06,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:06,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:07,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:07,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 23:22:07,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:07,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 328 [2020-10-14 23:22:07,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:07,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:07,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:22:07,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:07,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 23:22:07,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:07,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:07,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:07,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:07,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:07,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:07,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:07,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:07,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:07,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:07,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:07,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:07,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:07,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:07,487 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:07,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047659093] [2020-10-14 23:22:07,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:07,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:22:07,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602680033] [2020-10-14 23:22:07,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:22:07,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:07,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:22:07,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:22:07,489 INFO L87 Difference]: Start difference. First operand 149 states and 167 transitions. Second operand 13 states. [2020-10-14 23:22:08,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:08,096 INFO L93 Difference]: Finished difference Result 188 states and 209 transitions. [2020-10-14 23:22:08,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 23:22:08,096 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2020-10-14 23:22:08,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:08,098 INFO L225 Difference]: With dead ends: 188 [2020-10-14 23:22:08,098 INFO L226 Difference]: Without dead ends: 175 [2020-10-14 23:22:08,099 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:22:08,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-14 23:22:08,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 144. [2020-10-14 23:22:08,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-14 23:22:08,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 160 transitions. [2020-10-14 23:22:08,112 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 160 transitions. Word has length 36 [2020-10-14 23:22:08,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:08,112 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 160 transitions. [2020-10-14 23:22:08,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:22:08,112 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 160 transitions. [2020-10-14 23:22:08,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 23:22:08,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:08,113 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 23:22:08,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 23:22:08,114 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:08,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:08,114 INFO L82 PathProgramCache]: Analyzing trace with hash -21461300, now seen corresponding path program 1 times [2020-10-14 23:22:08,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:08,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779862664] [2020-10-14 23:22:08,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:08,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:08,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:08,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:08,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 23:22:08,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:08,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 361 [2020-10-14 23:22:08,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:08,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:08,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:22:08,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:08,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 23:22:08,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:08,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:08,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:08,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:08,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:08,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:08,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:08,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:08,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:08,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:08,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:08,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:08,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:08,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:22:09,007 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:09,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [779862664] [2020-10-14 23:22:09,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:09,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:22:09,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828078886] [2020-10-14 23:22:09,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:22:09,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:09,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:22:09,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:22:09,010 INFO L87 Difference]: Start difference. First operand 144 states and 160 transitions. Second operand 14 states. [2020-10-14 23:22:10,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:10,313 INFO L93 Difference]: Finished difference Result 177 states and 196 transitions. [2020-10-14 23:22:10,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:22:10,317 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 38 [2020-10-14 23:22:10,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:10,319 INFO L225 Difference]: With dead ends: 177 [2020-10-14 23:22:10,319 INFO L226 Difference]: Without dead ends: 175 [2020-10-14 23:22:10,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:22:10,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-14 23:22:10,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 143. [2020-10-14 23:22:10,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-14 23:22:10,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 159 transitions. [2020-10-14 23:22:10,332 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 159 transitions. Word has length 38 [2020-10-14 23:22:10,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:10,332 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 159 transitions. [2020-10-14 23:22:10,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:22:10,332 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 159 transitions. [2020-10-14 23:22:10,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 23:22:10,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:10,333 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:10,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 23:22:10,334 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:10,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:10,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1093624864, now seen corresponding path program 3 times [2020-10-14 23:22:10,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:10,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [254192945] [2020-10-14 23:22:10,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:10,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:10,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:11,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:11,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 23:22:11,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:22:11,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 789 [2020-10-14 23:22:11,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:11,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:11,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:22:11,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:11,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 23:22:11,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:22:11,521 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2020-10-14 23:22:11,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:11,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:11,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:11,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:11,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:11,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:11,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:22:11,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:11,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:11,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:11,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:11,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:11,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:22:11,830 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:11,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [254192945] [2020-10-14 23:22:11,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:11,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:22:11,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902096562] [2020-10-14 23:22:11,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:22:11,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:11,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:22:11,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:22:11,833 INFO L87 Difference]: Start difference. First operand 143 states and 159 transitions. Second operand 13 states. [2020-10-14 23:22:12,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:12,625 INFO L93 Difference]: Finished difference Result 182 states and 201 transitions. [2020-10-14 23:22:12,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:22:12,625 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2020-10-14 23:22:12,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:12,627 INFO L225 Difference]: With dead ends: 182 [2020-10-14 23:22:12,627 INFO L226 Difference]: Without dead ends: 170 [2020-10-14 23:22:12,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:22:12,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-14 23:22:12,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 135. [2020-10-14 23:22:12,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-14 23:22:12,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 150 transitions. [2020-10-14 23:22:12,640 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 150 transitions. Word has length 38 [2020-10-14 23:22:12,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:12,641 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 150 transitions. [2020-10-14 23:22:12,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:22:12,641 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 150 transitions. [2020-10-14 23:22:12,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 23:22:12,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:12,642 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:12,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 23:22:12,642 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:12,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:12,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1721423476, now seen corresponding path program 4 times [2020-10-14 23:22:12,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:12,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1419452199] [2020-10-14 23:22:12,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:12,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:12,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:13,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:13,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 23:22:13,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:13,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-10-14 23:22:13,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:13,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:13,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:22:13,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:13,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 23:22:13,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:13,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:13,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:13,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:13,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:13,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:13,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:13,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:13,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:13,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:13,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:13,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:13,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:13,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:22:13,501 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:13,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1419452199] [2020-10-14 23:22:13,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:13,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:22:13,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432560818] [2020-10-14 23:22:13,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:22:13,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:13,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:22:13,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:22:13,504 INFO L87 Difference]: Start difference. First operand 135 states and 150 transitions. Second operand 15 states. [2020-10-14 23:22:14,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:14,941 INFO L93 Difference]: Finished difference Result 216 states and 235 transitions. [2020-10-14 23:22:14,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:22:14,941 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 38 [2020-10-14 23:22:14,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:14,942 INFO L225 Difference]: With dead ends: 216 [2020-10-14 23:22:14,943 INFO L226 Difference]: Without dead ends: 214 [2020-10-14 23:22:14,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2020-10-14 23:22:14,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-14 23:22:14,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 157. [2020-10-14 23:22:14,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-14 23:22:14,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 173 transitions. [2020-10-14 23:22:14,958 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 173 transitions. Word has length 38 [2020-10-14 23:22:14,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:14,958 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 173 transitions. [2020-10-14 23:22:14,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:22:14,959 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 173 transitions. [2020-10-14 23:22:14,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 23:22:14,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:14,959 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:14,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 23:22:14,960 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:14,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:14,960 INFO L82 PathProgramCache]: Analyzing trace with hash -829603170, now seen corresponding path program 2 times [2020-10-14 23:22:14,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:14,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2038027362] [2020-10-14 23:22:14,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:14,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:14,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:15,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:15,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 23:22:15,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:15,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-14 23:22:15,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:15,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:15,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:22:15,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:15,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 23:22:15,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:15,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:15,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:15,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:15,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:15,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:15,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:15,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:15,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:15,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:15,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:15,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:15,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:15,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:15,385 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:15,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2038027362] [2020-10-14 23:22:15,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:15,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:22:15,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707889661] [2020-10-14 23:22:15,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:22:15,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:15,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:22:15,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:22:15,387 INFO L87 Difference]: Start difference. First operand 157 states and 173 transitions. Second operand 13 states. [2020-10-14 23:22:16,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:16,329 INFO L93 Difference]: Finished difference Result 192 states and 210 transitions. [2020-10-14 23:22:16,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:22:16,329 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 38 [2020-10-14 23:22:16,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:16,330 INFO L225 Difference]: With dead ends: 192 [2020-10-14 23:22:16,331 INFO L226 Difference]: Without dead ends: 126 [2020-10-14 23:22:16,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:22:16,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-14 23:22:16,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-10-14 23:22:16,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-14 23:22:16,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 140 transitions. [2020-10-14 23:22:16,344 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 140 transitions. Word has length 38 [2020-10-14 23:22:16,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:16,345 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 140 transitions. [2020-10-14 23:22:16,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:22:16,345 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 140 transitions. [2020-10-14 23:22:16,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 23:22:16,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:16,346 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-10-14 23:22:16,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 23:22:16,346 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:16,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:16,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1021251364, now seen corresponding path program 2 times [2020-10-14 23:22:16,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:16,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37633215] [2020-10-14 23:22:16,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:16,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:16,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:17,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:17,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 23:22:17,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:17,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 637 [2020-10-14 23:22:17,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:17,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:17,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:22:17,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:17,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 23:22:17,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:17,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:17,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:17,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:17,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:17,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:17,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:17,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:17,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:17,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:17,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:17,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:17,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:17,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:17,493 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:17,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37633215] [2020-10-14 23:22:17,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:17,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:22:17,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746223393] [2020-10-14 23:22:17,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:22:17,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:17,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:22:17,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:22:17,495 INFO L87 Difference]: Start difference. First operand 126 states and 140 transitions. Second operand 16 states. [2020-10-14 23:22:18,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:18,828 INFO L93 Difference]: Finished difference Result 200 states and 221 transitions. [2020-10-14 23:22:18,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:22:18,829 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 41 [2020-10-14 23:22:18,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:18,831 INFO L225 Difference]: With dead ends: 200 [2020-10-14 23:22:18,831 INFO L226 Difference]: Without dead ends: 198 [2020-10-14 23:22:18,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=81, Invalid=621, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:22:18,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-14 23:22:18,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 165. [2020-10-14 23:22:18,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-14 23:22:18,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 184 transitions. [2020-10-14 23:22:18,845 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 184 transitions. Word has length 41 [2020-10-14 23:22:18,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:18,846 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 184 transitions. [2020-10-14 23:22:18,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:22:18,846 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 184 transitions. [2020-10-14 23:22:18,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 23:22:18,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:18,847 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:18,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 23:22:18,847 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:18,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:18,847 INFO L82 PathProgramCache]: Analyzing trace with hash 2136337528, now seen corresponding path program 5 times [2020-10-14 23:22:18,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:18,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576018103] [2020-10-14 23:22:18,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:18,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:18,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:19,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:19,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:20,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:20,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 23:22:20,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:22:20,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1436 [2020-10-14 23:22:20,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:20,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:20,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:22:20,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:20,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 23:22:20,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:20,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:20,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:20,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:20,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:20,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:20,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:20,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:20,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:20,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:20,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:20,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:20,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:20,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:21,008 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:21,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576018103] [2020-10-14 23:22:21,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:21,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:22:21,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094425145] [2020-10-14 23:22:21,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:22:21,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:21,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:22:21,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:22:21,009 INFO L87 Difference]: Start difference. First operand 165 states and 184 transitions. Second operand 15 states. [2020-10-14 23:22:22,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:22,336 INFO L93 Difference]: Finished difference Result 216 states and 242 transitions. [2020-10-14 23:22:22,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:22:22,337 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 41 [2020-10-14 23:22:22,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:22,339 INFO L225 Difference]: With dead ends: 216 [2020-10-14 23:22:22,339 INFO L226 Difference]: Without dead ends: 204 [2020-10-14 23:22:22,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2020-10-14 23:22:22,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-14 23:22:22,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 128. [2020-10-14 23:22:22,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-14 23:22:22,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 144 transitions. [2020-10-14 23:22:22,355 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 144 transitions. Word has length 41 [2020-10-14 23:22:22,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:22,355 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 144 transitions. [2020-10-14 23:22:22,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:22:22,355 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 144 transitions. [2020-10-14 23:22:22,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 23:22:22,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:22,356 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-10-14 23:22:22,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 23:22:22,356 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:22,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:22,357 INFO L82 PathProgramCache]: Analyzing trace with hash 998619110, now seen corresponding path program 1 times [2020-10-14 23:22:22,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:22,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182821641] [2020-10-14 23:22:22,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:22,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:22,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:22,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:22,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 23:22:22,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:22,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 368 [2020-10-14 23:22:22,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:22,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:22,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:22:22,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:22,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 23:22:22,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:23,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:23,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:23,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:23,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:23,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:23,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:23,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:22:23,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:23,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:23,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:23,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:23,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:23,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:23,290 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:23,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182821641] [2020-10-14 23:22:23,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:23,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:22:23,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658831146] [2020-10-14 23:22:23,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:22:23,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:23,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:22:23,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:22:23,292 INFO L87 Difference]: Start difference. First operand 128 states and 144 transitions. Second operand 15 states. [2020-10-14 23:22:24,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:24,254 INFO L93 Difference]: Finished difference Result 181 states and 204 transitions. [2020-10-14 23:22:24,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:22:24,255 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 41 [2020-10-14 23:22:24,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:24,256 INFO L225 Difference]: With dead ends: 181 [2020-10-14 23:22:24,256 INFO L226 Difference]: Without dead ends: 168 [2020-10-14 23:22:24,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:22:24,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-14 23:22:24,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 127. [2020-10-14 23:22:24,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-14 23:22:24,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 142 transitions. [2020-10-14 23:22:24,269 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 142 transitions. Word has length 41 [2020-10-14 23:22:24,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:24,269 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 142 transitions. [2020-10-14 23:22:24,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:22:24,269 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 142 transitions. [2020-10-14 23:22:24,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 23:22:24,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:24,270 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:24,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 23:22:24,270 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:24,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:24,271 INFO L82 PathProgramCache]: Analyzing trace with hash 2113705274, now seen corresponding path program 3 times [2020-10-14 23:22:24,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:24,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [610752572] [2020-10-14 23:22:24,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:24,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:24,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:24,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:24,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 23:22:24,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:24,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 511 [2020-10-14 23:22:24,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:24,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:24,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:22:24,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:24,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 23:22:24,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:25,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:25,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:25,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:25,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:25,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:25,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:25,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:25,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:25,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:25,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:25,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:25,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:25,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:25,193 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:25,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [610752572] [2020-10-14 23:22:25,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:25,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:22:25,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259435129] [2020-10-14 23:22:25,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:22:25,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:25,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:22:25,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:22:25,196 INFO L87 Difference]: Start difference. First operand 127 states and 142 transitions. Second operand 15 states. [2020-10-14 23:22:26,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:26,652 INFO L93 Difference]: Finished difference Result 325 states and 360 transitions. [2020-10-14 23:22:26,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:22:26,653 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 41 [2020-10-14 23:22:26,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:26,655 INFO L225 Difference]: With dead ends: 325 [2020-10-14 23:22:26,655 INFO L226 Difference]: Without dead ends: 323 [2020-10-14 23:22:26,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2020-10-14 23:22:26,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-10-14 23:22:26,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 192. [2020-10-14 23:22:26,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-10-14 23:22:26,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 214 transitions. [2020-10-14 23:22:26,675 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 214 transitions. Word has length 41 [2020-10-14 23:22:26,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:26,675 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 214 transitions. [2020-10-14 23:22:26,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:22:26,675 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 214 transitions. [2020-10-14 23:22:26,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 23:22:26,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:26,676 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:26,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 23:22:26,676 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:26,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:26,677 INFO L82 PathProgramCache]: Analyzing trace with hash 190477240, now seen corresponding path program 4 times [2020-10-14 23:22:26,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:26,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59715688] [2020-10-14 23:22:26,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:26,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:27,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:27,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 23:22:27,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:27,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 474 [2020-10-14 23:22:27,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:27,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:27,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:22:27,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:27,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 23:22:27,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:27,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:27,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:27,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:27,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:27,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:27,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:27,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:27,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:27,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:27,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:27,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:27,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:27,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:27,624 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:27,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59715688] [2020-10-14 23:22:27,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:27,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:22:27,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805386740] [2020-10-14 23:22:27,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:22:27,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:27,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:22:27,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:22:27,626 INFO L87 Difference]: Start difference. First operand 192 states and 214 transitions. Second operand 15 states. [2020-10-14 23:22:28,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:28,797 INFO L93 Difference]: Finished difference Result 320 states and 350 transitions. [2020-10-14 23:22:28,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:22:28,798 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 41 [2020-10-14 23:22:28,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:28,800 INFO L225 Difference]: With dead ends: 320 [2020-10-14 23:22:28,800 INFO L226 Difference]: Without dead ends: 308 [2020-10-14 23:22:28,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2020-10-14 23:22:28,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-10-14 23:22:28,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 232. [2020-10-14 23:22:28,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-14 23:22:28,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 257 transitions. [2020-10-14 23:22:28,837 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 257 transitions. Word has length 41 [2020-10-14 23:22:28,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:28,838 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 257 transitions. [2020-10-14 23:22:28,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:22:28,838 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 257 transitions. [2020-10-14 23:22:28,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 23:22:28,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:28,839 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-10-14 23:22:28,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 23:22:28,840 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:28,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:28,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1601290466, now seen corresponding path program 6 times [2020-10-14 23:22:28,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:28,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699344372] [2020-10-14 23:22:28,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:28,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:28,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:29,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:29,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 23:22:29,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:29,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 427 [2020-10-14 23:22:29,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:29,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:29,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:22:29,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:29,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 23:22:29,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:22:29,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:29,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:29,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:29,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:29,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:29,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:29,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:29,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:29,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:29,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:29,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:29,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:29,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:29,582 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:29,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699344372] [2020-10-14 23:22:29,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:29,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:22:29,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641635845] [2020-10-14 23:22:29,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:22:29,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:29,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:22:29,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:22:29,583 INFO L87 Difference]: Start difference. First operand 232 states and 257 transitions. Second operand 14 states. [2020-10-14 23:22:30,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:30,584 INFO L93 Difference]: Finished difference Result 288 states and 316 transitions. [2020-10-14 23:22:30,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:22:30,585 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 43 [2020-10-14 23:22:30,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:30,587 INFO L225 Difference]: With dead ends: 288 [2020-10-14 23:22:30,587 INFO L226 Difference]: Without dead ends: 236 [2020-10-14 23:22:30,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:22:30,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-10-14 23:22:30,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2020-10-14 23:22:30,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-10-14 23:22:30,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 261 transitions. [2020-10-14 23:22:30,623 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 261 transitions. Word has length 43 [2020-10-14 23:22:30,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:30,624 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 261 transitions. [2020-10-14 23:22:30,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:22:30,624 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 261 transitions. [2020-10-14 23:22:30,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 23:22:30,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:30,626 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-10-14 23:22:30,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 23:22:30,626 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:30,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:30,627 INFO L82 PathProgramCache]: Analyzing trace with hash 882283166, now seen corresponding path program 2 times [2020-10-14 23:22:30,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:30,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [71472727] [2020-10-14 23:22:30,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:30,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:30,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:31,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:31,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 23:22:31,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:31,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 717 [2020-10-14 23:22:31,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:31,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:31,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:22:31,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:31,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 23:22:31,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:32,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:32,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:32,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:32,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:32,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:32,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:32,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:22:32,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:32,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:32,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:32,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:32,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:32,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:32,069 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:32,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [71472727] [2020-10-14 23:22:32,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:32,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:22:32,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817638471] [2020-10-14 23:22:32,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:22:32,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:32,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:22:32,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:22:32,070 INFO L87 Difference]: Start difference. First operand 236 states and 261 transitions. Second operand 16 states. [2020-10-14 23:22:33,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:33,662 INFO L93 Difference]: Finished difference Result 273 states and 305 transitions. [2020-10-14 23:22:33,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:22:33,662 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 44 [2020-10-14 23:22:33,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:33,664 INFO L225 Difference]: With dead ends: 273 [2020-10-14 23:22:33,665 INFO L226 Difference]: Without dead ends: 271 [2020-10-14 23:22:33,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2020-10-14 23:22:33,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-10-14 23:22:33,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 235. [2020-10-14 23:22:33,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-10-14 23:22:33,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 260 transitions. [2020-10-14 23:22:33,701 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 260 transitions. Word has length 44 [2020-10-14 23:22:33,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:33,701 INFO L479 AbstractCegarLoop]: Abstraction has 235 states and 260 transitions. [2020-10-14 23:22:33,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:22:33,702 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 260 transitions. [2020-10-14 23:22:33,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 23:22:33,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:33,703 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:33,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 23:22:33,704 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:33,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:33,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1997369330, now seen corresponding path program 5 times [2020-10-14 23:22:33,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:33,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [23295328] [2020-10-14 23:22:33,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:33,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:33,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:34,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:34,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:34,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 23:22:34,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:22:34,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1094 [2020-10-14 23:22:34,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:34,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:34,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:22:34,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:34,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 23:22:34,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:35,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:35,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:35,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:35,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:35,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:35,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:35,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:35,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:35,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:35,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:35,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:35,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:35,426 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:35,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [23295328] [2020-10-14 23:22:35,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:35,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:22:35,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188993181] [2020-10-14 23:22:35,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:22:35,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:35,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:22:35,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:22:35,427 INFO L87 Difference]: Start difference. First operand 235 states and 260 transitions. Second operand 15 states. [2020-10-14 23:22:36,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:36,474 INFO L93 Difference]: Finished difference Result 263 states and 290 transitions. [2020-10-14 23:22:36,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:22:36,475 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2020-10-14 23:22:36,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:36,476 INFO L225 Difference]: With dead ends: 263 [2020-10-14 23:22:36,477 INFO L226 Difference]: Without dead ends: 251 [2020-10-14 23:22:36,477 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:22:36,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-10-14 23:22:36,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 214. [2020-10-14 23:22:36,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-14 23:22:36,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 238 transitions. [2020-10-14 23:22:36,497 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 238 transitions. Word has length 44 [2020-10-14 23:22:36,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:36,497 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 238 transitions. [2020-10-14 23:22:36,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:22:36,498 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 238 transitions. [2020-10-14 23:22:36,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 23:22:36,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:36,498 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:36,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 23:22:36,499 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:36,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:36,499 INFO L82 PathProgramCache]: Analyzing trace with hash 163245342, now seen corresponding path program 6 times [2020-10-14 23:22:36,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:36,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845013547] [2020-10-14 23:22:36,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:36,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:37,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:37,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 23:22:37,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:37,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 710 [2020-10-14 23:22:37,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:37,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:37,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:22:37,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:37,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 23:22:37,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:38,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:38,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:38,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:38,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:38,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:38,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:38,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:38,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:38,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:38,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:38,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:38,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:38,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:38,053 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:38,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1845013547] [2020-10-14 23:22:38,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:38,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:22:38,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245523685] [2020-10-14 23:22:38,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:22:38,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:38,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:22:38,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:22:38,055 INFO L87 Difference]: Start difference. First operand 214 states and 238 transitions. Second operand 17 states. [2020-10-14 23:22:39,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:39,702 INFO L93 Difference]: Finished difference Result 303 states and 330 transitions. [2020-10-14 23:22:39,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:22:39,703 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 44 [2020-10-14 23:22:39,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:39,705 INFO L225 Difference]: With dead ends: 303 [2020-10-14 23:22:39,705 INFO L226 Difference]: Without dead ends: 301 [2020-10-14 23:22:39,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=89, Invalid=781, Unknown=0, NotChecked=0, Total=870 [2020-10-14 23:22:39,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-10-14 23:22:39,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 252. [2020-10-14 23:22:39,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-14 23:22:39,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 277 transitions. [2020-10-14 23:22:39,726 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 277 transitions. Word has length 44 [2020-10-14 23:22:39,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:39,726 INFO L479 AbstractCegarLoop]: Abstraction has 252 states and 277 transitions. [2020-10-14 23:22:39,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:22:39,726 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 277 transitions. [2020-10-14 23:22:39,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 23:22:39,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:39,727 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:39,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 23:22:39,728 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:39,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:39,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1974737076, now seen corresponding path program 7 times [2020-10-14 23:22:39,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:39,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183828970] [2020-10-14 23:22:39,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:39,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:39,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:40,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:40,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 23:22:40,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:40,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-14 23:22:40,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:40,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:40,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:22:40,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:40,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 23:22:40,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:40,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:40,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:40,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:40,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:40,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:40,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:40,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:40,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:40,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:40,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:40,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:40,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:40,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:40,715 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 5 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:40,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183828970] [2020-10-14 23:22:40,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:40,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:22:40,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168712546] [2020-10-14 23:22:40,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:22:40,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:40,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:22:40,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:22:40,716 INFO L87 Difference]: Start difference. First operand 252 states and 277 transitions. Second operand 15 states. [2020-10-14 23:22:41,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:41,817 INFO L93 Difference]: Finished difference Result 266 states and 292 transitions. [2020-10-14 23:22:41,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 23:22:41,817 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2020-10-14 23:22:41,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:41,819 INFO L225 Difference]: With dead ends: 266 [2020-10-14 23:22:41,819 INFO L226 Difference]: Without dead ends: 197 [2020-10-14 23:22:41,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2020-10-14 23:22:41,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-14 23:22:41,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2020-10-14 23:22:41,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-14 23:22:41,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 219 transitions. [2020-10-14 23:22:41,843 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 219 transitions. Word has length 44 [2020-10-14 23:22:41,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:41,843 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 219 transitions. [2020-10-14 23:22:41,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:22:41,843 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 219 transitions. [2020-10-14 23:22:41,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 23:22:41,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:41,844 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-10-14 23:22:41,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-14 23:22:41,845 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:41,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:41,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1303728246, now seen corresponding path program 7 times [2020-10-14 23:22:41,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:41,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075811840] [2020-10-14 23:22:41,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:41,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:42,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:42,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 23:22:42,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:42,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 687 [2020-10-14 23:22:42,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:42,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:42,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:22:42,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:42,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 23:22:42,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:43,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:43,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:43,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:43,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:43,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:43,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:43,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:43,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:43,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:43,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:43,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:43,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:43,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:43,045 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:43,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075811840] [2020-10-14 23:22:43,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:43,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:22:43,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119083403] [2020-10-14 23:22:43,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:22:43,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:43,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:22:43,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:22:43,047 INFO L87 Difference]: Start difference. First operand 197 states and 219 transitions. Second operand 17 states. [2020-10-14 23:22:45,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:45,240 INFO L93 Difference]: Finished difference Result 484 states and 532 transitions. [2020-10-14 23:22:45,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 23:22:45,241 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 46 [2020-10-14 23:22:45,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:45,243 INFO L225 Difference]: With dead ends: 484 [2020-10-14 23:22:45,244 INFO L226 Difference]: Without dead ends: 482 [2020-10-14 23:22:45,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=83, Invalid=787, Unknown=0, NotChecked=0, Total=870 [2020-10-14 23:22:45,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2020-10-14 23:22:45,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 292. [2020-10-14 23:22:45,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-10-14 23:22:45,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 325 transitions. [2020-10-14 23:22:45,280 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 325 transitions. Word has length 46 [2020-10-14 23:22:45,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:45,280 INFO L479 AbstractCegarLoop]: Abstraction has 292 states and 325 transitions. [2020-10-14 23:22:45,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:22:45,280 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 325 transitions. [2020-10-14 23:22:45,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 23:22:45,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:45,281 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-10-14 23:22:45,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-14 23:22:45,281 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:45,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:45,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1578487860, now seen corresponding path program 8 times [2020-10-14 23:22:45,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:45,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618432260] [2020-10-14 23:22:45,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:45,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:45,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:45,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:45,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 23:22:45,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:45,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 482 [2020-10-14 23:22:45,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:45,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:45,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:22:45,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:45,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 23:22:45,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:46,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:46,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:46,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:46,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:46,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:46,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:46,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:46,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:46,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:46,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:46,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:46,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:46,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:46,331 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:46,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618432260] [2020-10-14 23:22:46,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:46,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:22:46,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998305345] [2020-10-14 23:22:46,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:22:46,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:46,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:22:46,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:22:46,333 INFO L87 Difference]: Start difference. First operand 292 states and 325 transitions. Second operand 17 states. [2020-10-14 23:22:48,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:48,037 INFO L93 Difference]: Finished difference Result 455 states and 497 transitions. [2020-10-14 23:22:48,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 23:22:48,037 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 46 [2020-10-14 23:22:48,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:48,040 INFO L225 Difference]: With dead ends: 455 [2020-10-14 23:22:48,040 INFO L226 Difference]: Without dead ends: 443 [2020-10-14 23:22:48,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=87, Invalid=783, Unknown=0, NotChecked=0, Total=870 [2020-10-14 23:22:48,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2020-10-14 23:22:48,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 398. [2020-10-14 23:22:48,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398 states. [2020-10-14 23:22:48,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 437 transitions. [2020-10-14 23:22:48,076 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 437 transitions. Word has length 46 [2020-10-14 23:22:48,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:48,076 INFO L479 AbstractCegarLoop]: Abstraction has 398 states and 437 transitions. [2020-10-14 23:22:48,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:22:48,076 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 437 transitions. [2020-10-14 23:22:48,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 23:22:48,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:48,078 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 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] [2020-10-14 23:22:48,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-14 23:22:48,078 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:48,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:48,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1342996538, now seen corresponding path program 3 times [2020-10-14 23:22:48,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:48,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407270903] [2020-10-14 23:22:48,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:48,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:48,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:48,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:48,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 23:22:48,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:48,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 809 [2020-10-14 23:22:48,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:48,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:48,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 23:22:48,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:48,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 23:22:48,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:49,284 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2020-10-14 23:22:49,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:49,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:49,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:49,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:49,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:49,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:49,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:49,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:49,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:49,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:49,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:49,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:49,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:49,663 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:49,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407270903] [2020-10-14 23:22:49,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:49,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 23:22:49,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424619863] [2020-10-14 23:22:49,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 23:22:49,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:49,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 23:22:49,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:22:49,664 INFO L87 Difference]: Start difference. First operand 398 states and 437 transitions. Second operand 18 states. [2020-10-14 23:22:51,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:51,658 INFO L93 Difference]: Finished difference Result 510 states and 558 transitions. [2020-10-14 23:22:51,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 23:22:51,658 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 47 [2020-10-14 23:22:51,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:51,662 INFO L225 Difference]: With dead ends: 510 [2020-10-14 23:22:51,662 INFO L226 Difference]: Without dead ends: 508 [2020-10-14 23:22:51,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=93, Invalid=837, Unknown=0, NotChecked=0, Total=930 [2020-10-14 23:22:51,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-10-14 23:22:51,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 462. [2020-10-14 23:22:51,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 462 states. [2020-10-14 23:22:51,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 508 transitions. [2020-10-14 23:22:51,709 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 508 transitions. Word has length 47 [2020-10-14 23:22:51,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:51,709 INFO L479 AbstractCegarLoop]: Abstraction has 462 states and 508 transitions. [2020-10-14 23:22:51,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 23:22:51,709 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 508 transitions. [2020-10-14 23:22:51,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 23:22:51,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:51,711 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:51,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-14 23:22:51,711 INFO L427 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:51,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:51,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1836884594, now seen corresponding path program 9 times [2020-10-14 23:22:51,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:51,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951592189] [2020-10-14 23:22:51,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:51,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:51,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:52,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:52,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:53,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:53,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 23:22:53,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:22:53,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2221 [2020-10-14 23:22:53,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:53,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:53,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:22:53,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:53,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 23:22:53,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:54,627 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-10-14 23:22:54,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:54,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:54,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:54,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:54,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:54,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:54,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:54,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:54,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:54,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:54,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:54,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:54,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:54,964 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 12 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:54,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951592189] [2020-10-14 23:22:54,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:54,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:22:54,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527931645] [2020-10-14 23:22:54,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:22:54,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:54,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:22:54,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:22:54,965 INFO L87 Difference]: Start difference. First operand 462 states and 508 transitions. Second operand 17 states. [2020-10-14 23:22:56,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:56,286 INFO L93 Difference]: Finished difference Result 511 states and 559 transitions. [2020-10-14 23:22:56,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 23:22:56,286 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 47 [2020-10-14 23:22:56,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:56,289 INFO L225 Difference]: With dead ends: 511 [2020-10-14 23:22:56,289 INFO L226 Difference]: Without dead ends: 499 [2020-10-14 23:22:56,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:22:56,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2020-10-14 23:22:56,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 401. [2020-10-14 23:22:56,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2020-10-14 23:22:56,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 443 transitions. [2020-10-14 23:22:56,320 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 443 transitions. Word has length 47 [2020-10-14 23:22:56,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:56,320 INFO L479 AbstractCegarLoop]: Abstraction has 401 states and 443 transitions. [2020-10-14 23:22:56,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:22:56,320 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 443 transitions. [2020-10-14 23:22:56,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 23:22:56,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:56,321 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 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] [2020-10-14 23:22:56,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-14 23:22:56,322 INFO L427 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:56,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:56,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1415383096, now seen corresponding path program 4 times [2020-10-14 23:22:56,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:56,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270787415] [2020-10-14 23:22:56,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:56,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:56,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:56,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:56,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 23:22:56,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:56,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 505 [2020-10-14 23:22:56,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:56,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:56,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:22:56,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:56,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 23:22:56,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:57,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:57,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:57,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:57,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:57,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:57,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:57,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:57,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:57,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:57,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:57,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:57,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:57,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:57,639 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:57,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270787415] [2020-10-14 23:22:57,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:57,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:22:57,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019882103] [2020-10-14 23:22:57,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:22:57,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:57,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:22:57,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:22:57,640 INFO L87 Difference]: Start difference. First operand 401 states and 443 transitions. Second operand 17 states. [2020-10-14 23:22:59,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:59,004 INFO L93 Difference]: Finished difference Result 472 states and 530 transitions. [2020-10-14 23:22:59,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:22:59,004 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 47 [2020-10-14 23:22:59,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:59,006 INFO L225 Difference]: With dead ends: 472 [2020-10-14 23:22:59,006 INFO L226 Difference]: Without dead ends: 459 [2020-10-14 23:22:59,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=74, Invalid=576, Unknown=0, NotChecked=0, Total=650 [2020-10-14 23:22:59,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2020-10-14 23:22:59,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 380. [2020-10-14 23:22:59,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2020-10-14 23:22:59,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 420 transitions. [2020-10-14 23:22:59,049 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 420 transitions. Word has length 47 [2020-10-14 23:22:59,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:59,050 INFO L479 AbstractCegarLoop]: Abstraction has 380 states and 420 transitions. [2020-10-14 23:22:59,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:22:59,050 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 420 transitions. [2020-10-14 23:22:59,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 23:22:59,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:59,051 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:59,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-14 23:22:59,052 INFO L427 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:59,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:59,052 INFO L82 PathProgramCache]: Analyzing trace with hash 25073230, now seen corresponding path program 3 times [2020-10-14 23:22:59,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:59,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654746451] [2020-10-14 23:22:59,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:59,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:59,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:59,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:59,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 23:22:59,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:59,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 645 [2020-10-14 23:22:59,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:59,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:59,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:22:59,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:59,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 23:22:59,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:00,153 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2020-10-14 23:23:00,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:00,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:00,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:00,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:00,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:00,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:00,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:00,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:00,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:00,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:00,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:00,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:00,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:00,610 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:00,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654746451] [2020-10-14 23:23:00,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:00,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 23:23:00,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797246578] [2020-10-14 23:23:00,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 23:23:00,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:00,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 23:23:00,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:23:00,612 INFO L87 Difference]: Start difference. First operand 380 states and 420 transitions. Second operand 18 states. [2020-10-14 23:23:03,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:03,003 INFO L93 Difference]: Finished difference Result 531 states and 585 transitions. [2020-10-14 23:23:03,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 23:23:03,004 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 49 [2020-10-14 23:23:03,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:03,007 INFO L225 Difference]: With dead ends: 531 [2020-10-14 23:23:03,007 INFO L226 Difference]: Without dead ends: 529 [2020-10-14 23:23:03,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=92, Invalid=900, Unknown=0, NotChecked=0, Total=992 [2020-10-14 23:23:03,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-10-14 23:23:03,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 417. [2020-10-14 23:23:03,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-10-14 23:23:03,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 458 transitions. [2020-10-14 23:23:03,053 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 458 transitions. Word has length 49 [2020-10-14 23:23:03,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:03,054 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 458 transitions. [2020-10-14 23:23:03,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 23:23:03,054 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 458 transitions. [2020-10-14 23:23:03,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 23:23:03,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:03,055 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:03,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-14 23:23:03,056 INFO L427 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:03,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:03,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1140159394, now seen corresponding path program 8 times [2020-10-14 23:23:03,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:03,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591901658] [2020-10-14 23:23:03,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:03,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:03,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:03,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:04,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:04,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 23:23:04,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:23:04,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1282 [2020-10-14 23:23:04,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:04,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:04,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:23:04,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:04,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 23:23:04,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:05,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:05,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:05,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:05,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:05,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:05,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:05,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:05,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:05,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:05,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:05,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:05,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:05,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:05,183 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 13 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:05,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1591901658] [2020-10-14 23:23:05,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:05,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:23:05,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423212582] [2020-10-14 23:23:05,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:23:05,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:05,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:23:05,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:23:05,184 INFO L87 Difference]: Start difference. First operand 417 states and 458 transitions. Second operand 17 states. [2020-10-14 23:23:07,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:07,229 INFO L93 Difference]: Finished difference Result 478 states and 532 transitions. [2020-10-14 23:23:07,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 23:23:07,229 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 49 [2020-10-14 23:23:07,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:07,233 INFO L225 Difference]: With dead ends: 478 [2020-10-14 23:23:07,233 INFO L226 Difference]: Without dead ends: 466 [2020-10-14 23:23:07,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=87, Invalid=783, Unknown=0, NotChecked=0, Total=870 [2020-10-14 23:23:07,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-10-14 23:23:07,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 380. [2020-10-14 23:23:07,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2020-10-14 23:23:07,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 420 transitions. [2020-10-14 23:23:07,267 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 420 transitions. Word has length 49 [2020-10-14 23:23:07,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:07,267 INFO L479 AbstractCegarLoop]: Abstraction has 380 states and 420 transitions. [2020-10-14 23:23:07,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:23:07,267 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 420 transitions. [2020-10-14 23:23:07,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 23:23:07,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:07,269 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:07,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-14 23:23:07,269 INFO L427 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:07,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:07,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1125163038, now seen corresponding path program 9 times [2020-10-14 23:23:07,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:07,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249403521] [2020-10-14 23:23:07,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:07,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:07,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:08,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:08,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 23:23:08,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:08,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1023 [2020-10-14 23:23:08,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:08,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:08,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 23:23:08,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:08,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 23:23:08,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:08,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:08,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:08,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:08,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:08,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:08,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:08,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:08,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:08,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:08,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:08,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:08,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:08,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:08,952 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:08,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249403521] [2020-10-14 23:23:08,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:08,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 23:23:08,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294076370] [2020-10-14 23:23:08,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 23:23:08,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:08,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 23:23:08,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:23:08,953 INFO L87 Difference]: Start difference. First operand 380 states and 420 transitions. Second operand 18 states. [2020-10-14 23:23:11,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:11,310 INFO L93 Difference]: Finished difference Result 548 states and 594 transitions. [2020-10-14 23:23:11,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 23:23:11,310 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 49 [2020-10-14 23:23:11,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:11,313 INFO L225 Difference]: With dead ends: 548 [2020-10-14 23:23:11,313 INFO L226 Difference]: Without dead ends: 546 [2020-10-14 23:23:11,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=92, Invalid=900, Unknown=0, NotChecked=0, Total=992 [2020-10-14 23:23:11,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2020-10-14 23:23:11,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 409. [2020-10-14 23:23:11,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2020-10-14 23:23:11,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 450 transitions. [2020-10-14 23:23:11,353 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 450 transitions. Word has length 49 [2020-10-14 23:23:11,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:11,353 INFO L479 AbstractCegarLoop]: Abstraction has 409 states and 450 transitions. [2020-10-14 23:23:11,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 23:23:11,353 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 450 transitions. [2020-10-14 23:23:11,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 23:23:11,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:11,354 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 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] [2020-10-14 23:23:11,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-14 23:23:11,355 INFO L427 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:11,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:11,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1984164896, now seen corresponding path program 10 times [2020-10-14 23:23:11,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:11,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [501671139] [2020-10-14 23:23:11,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:11,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:11,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:11,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:11,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 23:23:11,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:11,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 414 [2020-10-14 23:23:11,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:11,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:11,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:23:11,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:11,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 23:23:11,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:12,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:12,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:12,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:12,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:12,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:12,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:12,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:12,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:12,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:12,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:12,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:12,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:12,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:12,570 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:12,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [501671139] [2020-10-14 23:23:12,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:12,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:23:12,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507593625] [2020-10-14 23:23:12,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:23:12,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:12,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:23:12,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:23:12,571 INFO L87 Difference]: Start difference. First operand 409 states and 450 transitions. Second operand 17 states. [2020-10-14 23:23:14,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:14,252 INFO L93 Difference]: Finished difference Result 489 states and 534 transitions. [2020-10-14 23:23:14,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:23:14,252 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 49 [2020-10-14 23:23:14,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:14,254 INFO L225 Difference]: With dead ends: 489 [2020-10-14 23:23:14,254 INFO L226 Difference]: Without dead ends: 319 [2020-10-14 23:23:14,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=82, Invalid=730, Unknown=0, NotChecked=0, Total=812 [2020-10-14 23:23:14,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-10-14 23:23:14,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2020-10-14 23:23:14,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-14 23:23:14,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 355 transitions. [2020-10-14 23:23:14,290 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 355 transitions. Word has length 49 [2020-10-14 23:23:14,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:14,290 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 355 transitions. [2020-10-14 23:23:14,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:23:14,291 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 355 transitions. [2020-10-14 23:23:14,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 23:23:14,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:14,292 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 4, 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] [2020-10-14 23:23:14,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-14 23:23:14,292 INFO L427 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:14,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:14,292 INFO L82 PathProgramCache]: Analyzing trace with hash 133950560, now seen corresponding path program 5 times [2020-10-14 23:23:14,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:14,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1679623136] [2020-10-14 23:23:14,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:14,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:14,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:15,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:15,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 23:23:15,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:15,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1030 [2020-10-14 23:23:15,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:15,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:15,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 23:23:15,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:15,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 23:23:15,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:16,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:16,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:16,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:16,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:16,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:16,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:16,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:16,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:16,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:16,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:16,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:16,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:16,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:16,218 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:16,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1679623136] [2020-10-14 23:23:16,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:16,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 23:23:16,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997600684] [2020-10-14 23:23:16,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 23:23:16,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:16,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 23:23:16,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:23:16,220 INFO L87 Difference]: Start difference. First operand 319 states and 355 transitions. Second operand 18 states. [2020-10-14 23:23:17,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:17,796 INFO L93 Difference]: Finished difference Result 409 states and 455 transitions. [2020-10-14 23:23:17,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:23:17,796 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 50 [2020-10-14 23:23:17,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:17,799 INFO L225 Difference]: With dead ends: 409 [2020-10-14 23:23:17,799 INFO L226 Difference]: Without dead ends: 396 [2020-10-14 23:23:17,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=86, Invalid=670, Unknown=0, NotChecked=0, Total=756 [2020-10-14 23:23:17,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2020-10-14 23:23:17,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 319. [2020-10-14 23:23:17,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-14 23:23:17,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 354 transitions. [2020-10-14 23:23:17,835 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 354 transitions. Word has length 50 [2020-10-14 23:23:17,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:17,836 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 354 transitions. [2020-10-14 23:23:17,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 23:23:17,836 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 354 transitions. [2020-10-14 23:23:17,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 23:23:17,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:17,837 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:17,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-14 23:23:17,838 INFO L427 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:17,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:17,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1803294986, now seen corresponding path program 4 times [2020-10-14 23:23:17,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:17,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454790447] [2020-10-14 23:23:17,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:17,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:18,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:19,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:19,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 23:23:19,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:19,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1369 [2020-10-14 23:23:19,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:19,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:19,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 23:23:19,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:19,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 23:23:19,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:19,735 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2020-10-14 23:23:20,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:20,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:20,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:20,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:20,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:20,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:20,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:20,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:20,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:20,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:20,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:20,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:20,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:23:20,196 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:20,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454790447] [2020-10-14 23:23:20,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:20,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 23:23:20,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396918451] [2020-10-14 23:23:20,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 23:23:20,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:20,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 23:23:20,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:23:20,198 INFO L87 Difference]: Start difference. First operand 319 states and 354 transitions. Second operand 20 states. [2020-10-14 23:23:22,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:22,905 INFO L93 Difference]: Finished difference Result 538 states and 604 transitions. [2020-10-14 23:23:22,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 23:23:22,906 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 52 [2020-10-14 23:23:22,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:22,909 INFO L225 Difference]: With dead ends: 538 [2020-10-14 23:23:22,909 INFO L226 Difference]: Without dead ends: 536 [2020-10-14 23:23:22,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=99, Invalid=1023, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 23:23:22,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2020-10-14 23:23:22,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 430. [2020-10-14 23:23:22,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 430 states. [2020-10-14 23:23:22,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 476 transitions. [2020-10-14 23:23:22,967 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 476 transitions. Word has length 52 [2020-10-14 23:23:22,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:22,968 INFO L479 AbstractCegarLoop]: Abstraction has 430 states and 476 transitions. [2020-10-14 23:23:22,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 23:23:22,968 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 476 transitions. [2020-10-14 23:23:22,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 23:23:22,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:22,969 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:22,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-14 23:23:22,970 INFO L427 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:22,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:22,970 INFO L82 PathProgramCache]: Analyzing trace with hash -688208822, now seen corresponding path program 10 times [2020-10-14 23:23:22,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:22,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550983064] [2020-10-14 23:23:22,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:23,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:23,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:23,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:24,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:26,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:26,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 23:23:26,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:23:26,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2986 [2020-10-14 23:23:26,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:26,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:26,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 23:23:26,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:26,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 23:23:26,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:26,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:26,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:26,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:26,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:26,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:26,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:26,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:23:26,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:26,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:26,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:26,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:26,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:26,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:26,857 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 13 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:26,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550983064] [2020-10-14 23:23:26,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:26,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 23:23:26,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546480832] [2020-10-14 23:23:26,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:23:26,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:26,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:23:26,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:23:26,858 INFO L87 Difference]: Start difference. First operand 430 states and 476 transitions. Second operand 19 states. [2020-10-14 23:23:29,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:29,278 INFO L93 Difference]: Finished difference Result 661 states and 738 transitions. [2020-10-14 23:23:29,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 23:23:29,279 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 52 [2020-10-14 23:23:29,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:29,282 INFO L225 Difference]: With dead ends: 661 [2020-10-14 23:23:29,283 INFO L226 Difference]: Without dead ends: 649 [2020-10-14 23:23:29,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=102, Invalid=954, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 23:23:29,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2020-10-14 23:23:29,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 445. [2020-10-14 23:23:29,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2020-10-14 23:23:29,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 500 transitions. [2020-10-14 23:23:29,347 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 500 transitions. Word has length 52 [2020-10-14 23:23:29,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:29,347 INFO L479 AbstractCegarLoop]: Abstraction has 445 states and 500 transitions. [2020-10-14 23:23:29,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:23:29,348 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 500 transitions. [2020-10-14 23:23:29,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 23:23:29,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:29,349 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:29,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-14 23:23:29,350 INFO L427 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:29,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:29,350 INFO L82 PathProgramCache]: Analyzing trace with hash -773935688, now seen corresponding path program 6 times [2020-10-14 23:23:29,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:29,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [434402697] [2020-10-14 23:23:29,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:29,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:30,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:30,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 23:23:30,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:30,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 755 [2020-10-14 23:23:30,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:30,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:30,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 23:23:30,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:30,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 23:23:30,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:30,539 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2020-10-14 23:23:30,671 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2020-10-14 23:23:31,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:31,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:31,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:31,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:31,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:31,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:31,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:31,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:31,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:31,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:31,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:31,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:31,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:23:31,162 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:31,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [434402697] [2020-10-14 23:23:31,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:31,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 23:23:31,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92819578] [2020-10-14 23:23:31,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:23:31,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:31,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:23:31,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:23:31,164 INFO L87 Difference]: Start difference. First operand 445 states and 500 transitions. Second operand 19 states. [2020-10-14 23:23:33,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:33,391 INFO L93 Difference]: Finished difference Result 683 states and 773 transitions. [2020-10-14 23:23:33,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 23:23:33,392 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 52 [2020-10-14 23:23:33,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:33,395 INFO L225 Difference]: With dead ends: 683 [2020-10-14 23:23:33,395 INFO L226 Difference]: Without dead ends: 670 [2020-10-14 23:23:33,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=96, Invalid=896, Unknown=0, NotChecked=0, Total=992 [2020-10-14 23:23:33,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-10-14 23:23:33,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 556. [2020-10-14 23:23:33,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-10-14 23:23:33,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 621 transitions. [2020-10-14 23:23:33,471 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 621 transitions. Word has length 52 [2020-10-14 23:23:33,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:33,471 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 621 transitions. [2020-10-14 23:23:33,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:23:33,471 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 621 transitions. [2020-10-14 23:23:33,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 23:23:33,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:33,473 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:33,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-14 23:23:33,473 INFO L427 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:33,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:33,474 INFO L82 PathProgramCache]: Analyzing trace with hash 341150476, now seen corresponding path program 11 times [2020-10-14 23:23:33,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:33,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640169271] [2020-10-14 23:23:33,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:33,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:33,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:34,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:34,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 23:23:34,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:34,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 844 [2020-10-14 23:23:34,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:34,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:34,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 23:23:34,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:34,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 23:23:34,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:34,755 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2020-10-14 23:23:35,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:35,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:35,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:35,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:35,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:35,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:35,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:35,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:35,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:35,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:35,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:35,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:35,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:35,066 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:35,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640169271] [2020-10-14 23:23:35,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:35,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 23:23:35,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936954005] [2020-10-14 23:23:35,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:23:35,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:35,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:23:35,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:23:35,067 INFO L87 Difference]: Start difference. First operand 556 states and 621 transitions. Second operand 19 states. [2020-10-14 23:23:38,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:38,129 INFO L93 Difference]: Finished difference Result 938 states and 1029 transitions. [2020-10-14 23:23:38,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 23:23:38,129 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 52 [2020-10-14 23:23:38,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:38,134 INFO L225 Difference]: With dead ends: 938 [2020-10-14 23:23:38,135 INFO L226 Difference]: Without dead ends: 936 [2020-10-14 23:23:38,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=95, Invalid=1027, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 23:23:38,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2020-10-14 23:23:38,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 668. [2020-10-14 23:23:38,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 668 states. [2020-10-14 23:23:38,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 744 transitions. [2020-10-14 23:23:38,198 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 744 transitions. Word has length 52 [2020-10-14 23:23:38,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:38,199 INFO L479 AbstractCegarLoop]: Abstraction has 668 states and 744 transitions. [2020-10-14 23:23:38,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:23:38,199 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 744 transitions. [2020-10-14 23:23:38,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 23:23:38,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:38,201 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:38,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-14 23:23:38,201 INFO L427 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:38,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:38,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1185155978, now seen corresponding path program 12 times [2020-10-14 23:23:38,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:38,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [553452090] [2020-10-14 23:23:38,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:38,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:38,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:38,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:38,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-14 23:23:38,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:38,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 610 [2020-10-14 23:23:38,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:38,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:38,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 23:23:38,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:38,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 23:23:38,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:39,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:39,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:39,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:39,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:39,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:39,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:39,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:39,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:39,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:39,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:39,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:39,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:39,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:39,765 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 2 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:39,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [553452090] [2020-10-14 23:23:39,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:39,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 23:23:39,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194858722] [2020-10-14 23:23:39,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:23:39,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:39,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:23:39,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:23:39,766 INFO L87 Difference]: Start difference. First operand 668 states and 744 transitions. Second operand 19 states. [2020-10-14 23:23:42,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:42,294 INFO L93 Difference]: Finished difference Result 917 states and 1017 transitions. [2020-10-14 23:23:42,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 23:23:42,295 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 52 [2020-10-14 23:23:42,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:42,299 INFO L225 Difference]: With dead ends: 917 [2020-10-14 23:23:42,299 INFO L226 Difference]: Without dead ends: 905 [2020-10-14 23:23:42,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=99, Invalid=1023, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 23:23:42,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2020-10-14 23:23:42,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 737. [2020-10-14 23:23:42,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 737 states. [2020-10-14 23:23:42,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 816 transitions. [2020-10-14 23:23:42,384 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 816 transitions. Word has length 52 [2020-10-14 23:23:42,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:42,385 INFO L479 AbstractCegarLoop]: Abstraction has 737 states and 816 transitions. [2020-10-14 23:23:42,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:23:42,385 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 816 transitions. [2020-10-14 23:23:42,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 23:23:42,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:42,387 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:42,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-14 23:23:42,387 INFO L427 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:42,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:42,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1628237152, now seen corresponding path program 11 times [2020-10-14 23:23:42,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:42,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206733713] [2020-10-14 23:23:42,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:42,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:43,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:43,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 23:23:43,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:43,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 591 [2020-10-14 23:23:43,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:43,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:43,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:23:43,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:43,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 23:23:43,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:43,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:43,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:43,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:43,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:43,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:43,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:43,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:43,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:43,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:43,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:43,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:43,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:43,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:43,935 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 7 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:43,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206733713] [2020-10-14 23:23:43,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:43,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 23:23:43,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688390828] [2020-10-14 23:23:43,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 23:23:43,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:43,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 23:23:43,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:23:43,937 INFO L87 Difference]: Start difference. First operand 737 states and 816 transitions. Second operand 18 states. [2020-10-14 23:23:46,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:46,147 INFO L93 Difference]: Finished difference Result 852 states and 932 transitions. [2020-10-14 23:23:46,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:23:46,147 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 54 [2020-10-14 23:23:46,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:46,151 INFO L225 Difference]: With dead ends: 852 [2020-10-14 23:23:46,151 INFO L226 Difference]: Without dead ends: 737 [2020-10-14 23:23:46,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=89, Invalid=903, Unknown=0, NotChecked=0, Total=992 [2020-10-14 23:23:46,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2020-10-14 23:23:46,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 737. [2020-10-14 23:23:46,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 737 states. [2020-10-14 23:23:46,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 811 transitions. [2020-10-14 23:23:46,234 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 811 transitions. Word has length 54 [2020-10-14 23:23:46,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:46,235 INFO L479 AbstractCegarLoop]: Abstraction has 737 states and 811 transitions. [2020-10-14 23:23:46,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 23:23:46,235 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 811 transitions. [2020-10-14 23:23:46,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 23:23:46,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:46,236 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:46,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-14 23:23:46,237 INFO L427 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:46,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:46,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1945569970, now seen corresponding path program 5 times [2020-10-14 23:23:46,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:46,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157438967] [2020-10-14 23:23:46,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:46,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:46,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:48,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:48,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 23:23:48,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:48,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1839 [2020-10-14 23:23:48,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:48,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:48,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 23:23:48,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:48,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 23:23:48,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:48,834 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2020-10-14 23:23:48,979 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2020-10-14 23:23:49,136 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2020-10-14 23:23:49,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:49,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:49,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:49,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:49,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:49,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:49,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:49,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:49,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:49,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:49,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:49,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:49,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:49,711 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:49,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157438967] [2020-10-14 23:23:49,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:49,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 23:23:49,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168521338] [2020-10-14 23:23:49,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 23:23:49,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:49,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 23:23:49,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:23:49,713 INFO L87 Difference]: Start difference. First operand 737 states and 811 transitions. Second operand 21 states. [2020-10-14 23:23:51,280 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2020-10-14 23:23:51,644 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2020-10-14 23:23:52,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:52,762 INFO L93 Difference]: Finished difference Result 852 states and 945 transitions. [2020-10-14 23:23:52,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 23:23:52,762 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 55 [2020-10-14 23:23:52,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:52,766 INFO L225 Difference]: With dead ends: 852 [2020-10-14 23:23:52,766 INFO L226 Difference]: Without dead ends: 850 [2020-10-14 23:23:52,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=112, Invalid=1148, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 23:23:52,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2020-10-14 23:23:52,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 626. [2020-10-14 23:23:52,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2020-10-14 23:23:52,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 690 transitions. [2020-10-14 23:23:52,843 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 690 transitions. Word has length 55 [2020-10-14 23:23:52,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:52,843 INFO L479 AbstractCegarLoop]: Abstraction has 626 states and 690 transitions. [2020-10-14 23:23:52,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 23:23:52,843 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 690 transitions. [2020-10-14 23:23:52,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 23:23:52,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:52,844 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:52,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-14 23:23:52,845 INFO L427 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:52,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:52,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1325200268, now seen corresponding path program 7 times [2020-10-14 23:23:52,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:52,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266111730] [2020-10-14 23:23:52,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:52,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:52,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:53,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:53,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 23:23:53,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:53,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-10-14 23:23:53,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:53,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:53,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 23:23:53,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:53,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 23:23:53,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:54,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:54,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:54,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:54,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:54,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:54,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:54,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:54,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:54,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:54,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:54,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:54,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:54,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:54,588 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:54,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266111730] [2020-10-14 23:23:54,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:54,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 23:23:54,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640175856] [2020-10-14 23:23:54,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 23:23:54,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:54,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 23:23:54,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:23:54,589 INFO L87 Difference]: Start difference. First operand 626 states and 690 transitions. Second operand 20 states. [2020-10-14 23:23:57,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:57,988 INFO L93 Difference]: Finished difference Result 716 states and 783 transitions. [2020-10-14 23:23:57,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 23:23:57,988 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 55 [2020-10-14 23:23:57,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:57,993 INFO L225 Difference]: With dead ends: 716 [2020-10-14 23:23:57,993 INFO L226 Difference]: Without dead ends: 714 [2020-10-14 23:23:57,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=103, Invalid=1157, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 23:23:57,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2020-10-14 23:23:58,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 692. [2020-10-14 23:23:58,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-10-14 23:23:58,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 757 transitions. [2020-10-14 23:23:58,102 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 757 transitions. Word has length 55 [2020-10-14 23:23:58,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:58,102 INFO L479 AbstractCegarLoop]: Abstraction has 692 states and 757 transitions. [2020-10-14 23:23:58,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 23:23:58,103 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 757 transitions. [2020-10-14 23:23:58,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 23:23:58,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:58,105 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:58,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-14 23:23:58,105 INFO L427 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:58,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:58,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1854680864, now seen corresponding path program 13 times [2020-10-14 23:23:58,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:58,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372100961] [2020-10-14 23:23:58,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:58,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:59,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:00,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:00,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 23:24:00,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:24:00,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2510 [2020-10-14 23:24:00,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:00,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:00,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 23:24:00,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:00,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 23:24:00,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:01,415 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2020-10-14 23:24:01,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:01,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:01,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:01,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:01,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:01,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:01,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:01,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:01,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:01,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:01,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:01,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:01,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:01,887 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 16 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:01,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372100961] [2020-10-14 23:24:01,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:01,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 23:24:01,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784086298] [2020-10-14 23:24:01,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:24:01,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:01,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:24:01,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:24:01,888 INFO L87 Difference]: Start difference. First operand 692 states and 757 transitions. Second operand 19 states. [2020-10-14 23:24:04,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:04,228 INFO L93 Difference]: Finished difference Result 720 states and 787 transitions. [2020-10-14 23:24:04,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:24:04,229 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 55 [2020-10-14 23:24:04,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:04,231 INFO L225 Difference]: With dead ends: 720 [2020-10-14 23:24:04,231 INFO L226 Difference]: Without dead ends: 708 [2020-10-14 23:24:04,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:24:04,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2020-10-14 23:24:04,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 626. [2020-10-14 23:24:04,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2020-10-14 23:24:04,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 690 transitions. [2020-10-14 23:24:04,302 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 690 transitions. Word has length 55 [2020-10-14 23:24:04,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:04,302 INFO L479 AbstractCegarLoop]: Abstraction has 626 states and 690 transitions. [2020-10-14 23:24:04,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:24:04,302 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 690 transitions. [2020-10-14 23:24:04,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 23:24:04,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:04,303 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:04,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-14 23:24:04,303 INFO L427 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:04,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:04,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1925750604, now seen corresponding path program 8 times [2020-10-14 23:24:04,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:04,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585085265] [2020-10-14 23:24:04,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:04,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:04,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:05,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:05,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 23:24:05,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:05,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1149 [2020-10-14 23:24:05,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:05,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:05,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 23:24:05,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:05,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 23:24:05,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:05,971 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2020-10-14 23:24:06,104 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2020-10-14 23:24:06,389 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2020-10-14 23:24:06,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:06,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:06,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:06,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:06,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:06,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:06,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:06,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:06,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:06,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:06,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:06,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:06,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:06,938 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 8 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:06,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [585085265] [2020-10-14 23:24:06,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:06,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 23:24:06,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395251931] [2020-10-14 23:24:06,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 23:24:06,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:06,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 23:24:06,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:24:06,940 INFO L87 Difference]: Start difference. First operand 626 states and 690 transitions. Second operand 20 states. [2020-10-14 23:24:07,855 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 73 [2020-10-14 23:24:08,340 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-10-14 23:24:08,526 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2020-10-14 23:24:08,925 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-14 23:24:09,263 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-10-14 23:24:09,590 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 91 [2020-10-14 23:24:10,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:10,849 INFO L93 Difference]: Finished difference Result 802 states and 881 transitions. [2020-10-14 23:24:10,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 23:24:10,849 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 55 [2020-10-14 23:24:10,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:10,854 INFO L225 Difference]: With dead ends: 802 [2020-10-14 23:24:10,854 INFO L226 Difference]: Without dead ends: 789 [2020-10-14 23:24:10,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=158, Invalid=1402, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 23:24:10,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2020-10-14 23:24:10,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 559. [2020-10-14 23:24:10,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-14 23:24:10,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 622 transitions. [2020-10-14 23:24:10,935 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 622 transitions. Word has length 55 [2020-10-14 23:24:10,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:10,935 INFO L479 AbstractCegarLoop]: Abstraction has 559 states and 622 transitions. [2020-10-14 23:24:10,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 23:24:10,935 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 622 transitions. [2020-10-14 23:24:10,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 23:24:10,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:10,937 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:10,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-14 23:24:10,937 INFO L427 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:10,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:10,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1254130528, now seen corresponding path program 14 times [2020-10-14 23:24:10,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:10,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908807298] [2020-10-14 23:24:10,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:11,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:11,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:12,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:12,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 23:24:12,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:12,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1861 [2020-10-14 23:24:12,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:12,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:12,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 23:24:12,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:12,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 23:24:12,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:13,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:13,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:13,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:13,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:13,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:13,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:13,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:13,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:13,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:13,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:13,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:13,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:13,759 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:13,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908807298] [2020-10-14 23:24:13,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:13,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 23:24:13,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319079733] [2020-10-14 23:24:13,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 23:24:13,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:13,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 23:24:13,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=378, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:24:13,760 INFO L87 Difference]: Start difference. First operand 559 states and 622 transitions. Second operand 21 states. [2020-10-14 23:24:17,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:17,142 INFO L93 Difference]: Finished difference Result 767 states and 833 transitions. [2020-10-14 23:24:17,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 23:24:17,143 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 55 [2020-10-14 23:24:17,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:17,147 INFO L225 Difference]: With dead ends: 767 [2020-10-14 23:24:17,147 INFO L226 Difference]: Without dead ends: 765 [2020-10-14 23:24:17,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=109, Invalid=1223, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 23:24:17,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2020-10-14 23:24:17,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 671. [2020-10-14 23:24:17,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 671 states. [2020-10-14 23:24:17,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 735 transitions. [2020-10-14 23:24:17,215 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 735 transitions. Word has length 55 [2020-10-14 23:24:17,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:17,215 INFO L479 AbstractCegarLoop]: Abstraction has 671 states and 735 transitions. [2020-10-14 23:24:17,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 23:24:17,215 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 735 transitions. [2020-10-14 23:24:17,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 23:24:17,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:17,216 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:17,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-14 23:24:17,217 INFO L427 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:17,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:17,217 INFO L82 PathProgramCache]: Analyzing trace with hash -825321566, now seen corresponding path program 15 times [2020-10-14 23:24:17,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:17,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2121044720] [2020-10-14 23:24:17,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:17,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:17,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:17,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:17,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 23:24:17,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:17,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 692 [2020-10-14 23:24:17,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:17,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:17,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 23:24:17,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:17,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 23:24:17,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:18,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:18,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:18,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:18,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:18,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:18,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:18,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:18,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:18,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:18,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:18,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:18,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:18,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:18,557 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 7 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:18,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2121044720] [2020-10-14 23:24:18,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:18,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 23:24:18,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772712266] [2020-10-14 23:24:18,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:24:18,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:18,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:24:18,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:24:18,559 INFO L87 Difference]: Start difference. First operand 671 states and 735 transitions. Second operand 19 states. [2020-10-14 23:24:20,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:20,997 INFO L93 Difference]: Finished difference Result 685 states and 750 transitions. [2020-10-14 23:24:20,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:24:20,997 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 55 [2020-10-14 23:24:20,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:21,000 INFO L225 Difference]: With dead ends: 685 [2020-10-14 23:24:21,000 INFO L226 Difference]: Without dead ends: 512 [2020-10-14 23:24:21,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=94, Invalid=962, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 23:24:21,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2020-10-14 23:24:21,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 512. [2020-10-14 23:24:21,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 512 states. [2020-10-14 23:24:21,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 568 transitions. [2020-10-14 23:24:21,061 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 568 transitions. Word has length 55 [2020-10-14 23:24:21,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:21,061 INFO L479 AbstractCegarLoop]: Abstraction has 512 states and 568 transitions. [2020-10-14 23:24:21,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:24:21,061 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 568 transitions. [2020-10-14 23:24:21,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 23:24:21,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:21,063 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:21,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-14 23:24:21,063 INFO L427 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:21,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:21,063 INFO L82 PathProgramCache]: Analyzing trace with hash -915543304, now seen corresponding path program 12 times [2020-10-14 23:24:21,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:21,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338184830] [2020-10-14 23:24:21,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:21,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:21,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:22,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:22,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 23:24:22,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:22,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1415 [2020-10-14 23:24:22,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:22,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:22,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 23:24:22,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:22,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 23:24:22,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:23,022 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2020-10-14 23:24:23,189 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2020-10-14 23:24:23,375 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2020-10-14 23:24:23,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:23,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:23,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:23,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:23,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:23,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:23,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:23,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:23,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:23,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:23,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:23,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:23,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:23,883 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:23,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338184830] [2020-10-14 23:24:23,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:23,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 23:24:23,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412563056] [2020-10-14 23:24:23,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 23:24:23,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:23,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 23:24:23,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:24:23,884 INFO L87 Difference]: Start difference. First operand 512 states and 568 transitions. Second operand 21 states. [2020-10-14 23:24:28,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:28,220 INFO L93 Difference]: Finished difference Result 1226 states and 1340 transitions. [2020-10-14 23:24:28,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 23:24:28,220 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 57 [2020-10-14 23:24:28,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:28,225 INFO L225 Difference]: With dead ends: 1226 [2020-10-14 23:24:28,225 INFO L226 Difference]: Without dead ends: 1224 [2020-10-14 23:24:28,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=107, Invalid=1299, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 23:24:28,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2020-10-14 23:24:28,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 769. [2020-10-14 23:24:28,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 769 states. [2020-10-14 23:24:28,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 852 transitions. [2020-10-14 23:24:28,328 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 852 transitions. Word has length 57 [2020-10-14 23:24:28,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:28,328 INFO L479 AbstractCegarLoop]: Abstraction has 769 states and 852 transitions. [2020-10-14 23:24:28,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 23:24:28,328 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 852 transitions. [2020-10-14 23:24:28,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 23:24:28,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:28,330 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:28,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-10-14 23:24:28,330 INFO L427 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:28,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:28,331 INFO L82 PathProgramCache]: Analyzing trace with hash 456263994, now seen corresponding path program 16 times [2020-10-14 23:24:28,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:28,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [53960709] [2020-10-14 23:24:28,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:28,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:28,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:29,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:29,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 23:24:29,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:29,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1088 [2020-10-14 23:24:29,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:29,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:29,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 23:24:29,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:29,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 23:24:29,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:30,020 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2020-10-14 23:24:30,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:30,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:30,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:30,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:30,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:30,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:30,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:30,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:30,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:30,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:30,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:30,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:30,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:30,662 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 3 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:30,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [53960709] [2020-10-14 23:24:30,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:30,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 23:24:30,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421875951] [2020-10-14 23:24:30,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 23:24:30,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:30,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 23:24:30,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:24:30,664 INFO L87 Difference]: Start difference. First operand 769 states and 852 transitions. Second operand 21 states. [2020-10-14 23:24:34,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:34,183 INFO L93 Difference]: Finished difference Result 1199 states and 1312 transitions. [2020-10-14 23:24:34,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 23:24:34,184 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 57 [2020-10-14 23:24:34,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:34,189 INFO L225 Difference]: With dead ends: 1199 [2020-10-14 23:24:34,189 INFO L226 Difference]: Without dead ends: 1187 [2020-10-14 23:24:34,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=107, Invalid=1225, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 23:24:34,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2020-10-14 23:24:34,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 1058. [2020-10-14 23:24:34,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1058 states. [2020-10-14 23:24:34,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1155 transitions. [2020-10-14 23:24:34,316 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1155 transitions. Word has length 57 [2020-10-14 23:24:34,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:34,316 INFO L479 AbstractCegarLoop]: Abstraction has 1058 states and 1155 transitions. [2020-10-14 23:24:34,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 23:24:34,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1155 transitions. [2020-10-14 23:24:34,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 23:24:34,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:34,318 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:34,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-14 23:24:34,318 INFO L427 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:34,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:34,318 INFO L82 PathProgramCache]: Analyzing trace with hash 121940344, now seen corresponding path program 9 times [2020-10-14 23:24:34,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:34,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726809423] [2020-10-14 23:24:34,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:34,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:34,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:36,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:36,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 23:24:36,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:36,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1869 [2020-10-14 23:24:36,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:36,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:36,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 23:24:36,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:36,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 23:24:36,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:37,015 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2020-10-14 23:24:37,212 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 89 [2020-10-14 23:24:37,437 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 86 [2020-10-14 23:24:38,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:38,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:38,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:38,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:38,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:38,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:38,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:38,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:38,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:38,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:38,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:38,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:38,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:38,136 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:38,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726809423] [2020-10-14 23:24:38,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:38,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 23:24:38,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314413965] [2020-10-14 23:24:38,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 23:24:38,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:38,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 23:24:38,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=418, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:24:38,138 INFO L87 Difference]: Start difference. First operand 1058 states and 1155 transitions. Second operand 22 states. [2020-10-14 23:24:42,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:42,007 INFO L93 Difference]: Finished difference Result 1334 states and 1450 transitions. [2020-10-14 23:24:42,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 23:24:42,007 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 58 [2020-10-14 23:24:42,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:42,012 INFO L225 Difference]: With dead ends: 1334 [2020-10-14 23:24:42,013 INFO L226 Difference]: Without dead ends: 1332 [2020-10-14 23:24:42,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=117, Invalid=1365, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 23:24:42,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1332 states. [2020-10-14 23:24:42,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1332 to 1241. [2020-10-14 23:24:42,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1241 states. [2020-10-14 23:24:42,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 1355 transitions. [2020-10-14 23:24:42,140 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 1355 transitions. Word has length 58 [2020-10-14 23:24:42,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:42,141 INFO L479 AbstractCegarLoop]: Abstraction has 1241 states and 1355 transitions. [2020-10-14 23:24:42,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 23:24:42,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 1355 transitions. [2020-10-14 23:24:42,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 23:24:42,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:42,142 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:42,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-14 23:24:42,142 INFO L427 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:42,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:42,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1237026508, now seen corresponding path program 17 times [2020-10-14 23:24:42,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:42,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39766677] [2020-10-14 23:24:42,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:42,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:42,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:43,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:44,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:45,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:45,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 23:24:45,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:24:45,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3676 [2020-10-14 23:24:45,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:45,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:45,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 23:24:45,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:45,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 23:24:45,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:46,338 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2020-10-14 23:24:47,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:47,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:47,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:47,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:47,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:47,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:47,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:47,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:47,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:47,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:47,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:47,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:47,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:47,043 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 16 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:47,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39766677] [2020-10-14 23:24:47,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:47,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 23:24:47,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732701675] [2020-10-14 23:24:47,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 23:24:47,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:47,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 23:24:47,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=378, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:24:47,044 INFO L87 Difference]: Start difference. First operand 1241 states and 1355 transitions. Second operand 21 states. [2020-10-14 23:24:48,162 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2020-10-14 23:24:48,591 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-14 23:24:50,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:50,985 INFO L93 Difference]: Finished difference Result 1398 states and 1535 transitions. [2020-10-14 23:24:50,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 23:24:50,986 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 58 [2020-10-14 23:24:50,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:50,992 INFO L225 Difference]: With dead ends: 1398 [2020-10-14 23:24:50,992 INFO L226 Difference]: Without dead ends: 1386 [2020-10-14 23:24:50,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=113, Invalid=1219, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 23:24:50,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2020-10-14 23:24:51,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1066. [2020-10-14 23:24:51,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-10-14 23:24:51,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1171 transitions. [2020-10-14 23:24:51,107 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1171 transitions. Word has length 58 [2020-10-14 23:24:51,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:51,107 INFO L479 AbstractCegarLoop]: Abstraction has 1066 states and 1171 transitions. [2020-10-14 23:24:51,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 23:24:51,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1171 transitions. [2020-10-14 23:24:51,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 23:24:51,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:51,109 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:51,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-14 23:24:51,109 INFO L427 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:51,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:51,109 INFO L82 PathProgramCache]: Analyzing trace with hash -301706378, now seen corresponding path program 10 times [2020-10-14 23:24:51,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:51,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371771867] [2020-10-14 23:24:51,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:51,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:51,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:52,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:52,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 23:24:52,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:52,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1147 [2020-10-14 23:24:52,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:52,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:52,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 23:24:52,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:52,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 23:24:52,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:52,954 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 73 [2020-10-14 23:24:53,121 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2020-10-14 23:24:53,283 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2020-10-14 23:24:53,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:53,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:53,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:53,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:53,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:53,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:53,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:53,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:53,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:53,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:53,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:53,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:53,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:53,917 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 8 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:53,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371771867] [2020-10-14 23:24:53,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:53,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 23:24:53,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886055209] [2020-10-14 23:24:53,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 23:24:53,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:53,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 23:24:53,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:24:53,918 INFO L87 Difference]: Start difference. First operand 1066 states and 1171 transitions. Second operand 21 states. [2020-10-14 23:24:56,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:56,910 INFO L93 Difference]: Finished difference Result 1208 states and 1316 transitions. [2020-10-14 23:24:56,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 23:24:56,913 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 58 [2020-10-14 23:24:56,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:56,917 INFO L225 Difference]: With dead ends: 1208 [2020-10-14 23:24:56,917 INFO L226 Difference]: Without dead ends: 1195 [2020-10-14 23:24:56,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=108, Invalid=1152, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 23:24:56,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2020-10-14 23:24:57,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1000. [2020-10-14 23:24:57,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1000 states. [2020-10-14 23:24:57,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1103 transitions. [2020-10-14 23:24:57,030 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1103 transitions. Word has length 58 [2020-10-14 23:24:57,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:57,030 INFO L479 AbstractCegarLoop]: Abstraction has 1000 states and 1103 transitions. [2020-10-14 23:24:57,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 23:24:57,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1103 transitions. [2020-10-14 23:24:57,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 23:24:57,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:57,032 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:57,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-14 23:24:57,032 INFO L427 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:57,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:57,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1904247776, now seen corresponding path program 6 times [2020-10-14 23:24:57,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:57,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419191309] [2020-10-14 23:24:57,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:57,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:57,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:58,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:58,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 23:24:58,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:58,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1418 [2020-10-14 23:24:58,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:58,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:58,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 23:24:58,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:58,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 23:24:58,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:59,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:59,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:59,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:59,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:59,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:59,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:59,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:59,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:59,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:59,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:59,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:59,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:59,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:59,574 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:59,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419191309] [2020-10-14 23:24:59,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:59,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 23:24:59,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071275053] [2020-10-14 23:24:59,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 23:24:59,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:59,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 23:24:59,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:24:59,575 INFO L87 Difference]: Start difference. First operand 1000 states and 1103 transitions. Second operand 22 states. [2020-10-14 23:25:04,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:04,402 INFO L93 Difference]: Finished difference Result 1377 states and 1511 transitions. [2020-10-14 23:25:04,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-14 23:25:04,402 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 60 [2020-10-14 23:25:04,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:04,408 INFO L225 Difference]: With dead ends: 1377 [2020-10-14 23:25:04,408 INFO L226 Difference]: Without dead ends: 1375 [2020-10-14 23:25:04,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=116, Invalid=1444, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 23:25:04,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2020-10-14 23:25:04,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 999. [2020-10-14 23:25:04,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 999 states. [2020-10-14 23:25:04,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1102 transitions. [2020-10-14 23:25:04,520 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1102 transitions. Word has length 60 [2020-10-14 23:25:04,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:04,520 INFO L479 AbstractCegarLoop]: Abstraction has 999 states and 1102 transitions. [2020-10-14 23:25:04,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 23:25:04,520 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1102 transitions. [2020-10-14 23:25:04,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 23:25:04,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:04,521 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:04,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-10-14 23:25:04,522 INFO L427 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:04,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:04,522 INFO L82 PathProgramCache]: Analyzing trace with hash -789161612, now seen corresponding path program 13 times [2020-10-14 23:25:04,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:04,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346558881] [2020-10-14 23:25:04,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:04,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:04,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:05,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:07,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:07,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 23:25:07,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:25:07,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2543 [2020-10-14 23:25:07,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:07,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:07,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 23:25:07,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:07,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 23:25:07,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:08,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:08,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:08,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:08,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:08,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:08,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:08,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:08,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:08,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:08,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:08,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:08,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:08,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:08,095 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 17 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:08,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346558881] [2020-10-14 23:25:08,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:08,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 23:25:08,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31370189] [2020-10-14 23:25:08,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 23:25:08,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:08,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 23:25:08,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:25:08,096 INFO L87 Difference]: Start difference. First operand 999 states and 1102 transitions. Second operand 21 states. [2020-10-14 23:25:11,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:11,274 INFO L93 Difference]: Finished difference Result 1115 states and 1228 transitions. [2020-10-14 23:25:11,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:25:11,274 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 60 [2020-10-14 23:25:11,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:11,279 INFO L225 Difference]: With dead ends: 1115 [2020-10-14 23:25:11,279 INFO L226 Difference]: Without dead ends: 1103 [2020-10-14 23:25:11,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=77, Invalid=793, Unknown=0, NotChecked=0, Total=870 [2020-10-14 23:25:11,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2020-10-14 23:25:11,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 888. [2020-10-14 23:25:11,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 888 states. [2020-10-14 23:25:11,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 990 transitions. [2020-10-14 23:25:11,385 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 990 transitions. Word has length 60 [2020-10-14 23:25:11,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:11,385 INFO L479 AbstractCegarLoop]: Abstraction has 888 states and 990 transitions. [2020-10-14 23:25:11,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 23:25:11,385 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 990 transitions. [2020-10-14 23:25:11,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 23:25:11,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:11,386 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:11,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-10-14 23:25:11,386 INFO L427 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:11,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:11,387 INFO L82 PathProgramCache]: Analyzing trace with hash 923538336, now seen corresponding path program 14 times [2020-10-14 23:25:11,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:11,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [420434390] [2020-10-14 23:25:11,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:11,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:11,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:13,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:13,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 23:25:13,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:13,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1877 [2020-10-14 23:25:13,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:13,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:13,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 23:25:13,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:13,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 23:25:13,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:13,997 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2020-10-14 23:25:14,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:14,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:14,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:14,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:14,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:14,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:14,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:14,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:14,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:14,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:14,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:14,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:14,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:14,544 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:14,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [420434390] [2020-10-14 23:25:14,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:14,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 23:25:14,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186873445] [2020-10-14 23:25:14,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 23:25:14,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:14,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 23:25:14,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=460, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:25:14,546 INFO L87 Difference]: Start difference. First operand 888 states and 990 transitions. Second operand 23 states. [2020-10-14 23:25:19,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:19,613 INFO L93 Difference]: Finished difference Result 1395 states and 1508 transitions. [2020-10-14 23:25:19,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 23:25:19,613 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 60 [2020-10-14 23:25:19,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:19,620 INFO L225 Difference]: With dead ends: 1395 [2020-10-14 23:25:19,620 INFO L226 Difference]: Without dead ends: 1393 [2020-10-14 23:25:19,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=126, Invalid=1596, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 23:25:19,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2020-10-14 23:25:19,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1074. [2020-10-14 23:25:19,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1074 states. [2020-10-14 23:25:19,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 1177 transitions. [2020-10-14 23:25:19,747 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 1177 transitions. Word has length 60 [2020-10-14 23:25:19,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:19,747 INFO L479 AbstractCegarLoop]: Abstraction has 1074 states and 1177 transitions. [2020-10-14 23:25:19,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 23:25:19,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 1177 transitions. [2020-10-14 23:25:19,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 23:25:19,749 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:19,749 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:19,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-10-14 23:25:19,749 INFO L427 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:19,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:19,749 INFO L82 PathProgramCache]: Analyzing trace with hash 108231666, now seen corresponding path program 18 times [2020-10-14 23:25:19,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:19,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092413619] [2020-10-14 23:25:19,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:19,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:19,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:20,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:20,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 23:25:20,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:20,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 993 [2020-10-14 23:25:20,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:20,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:20,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 23:25:20,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:20,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 23:25:20,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:21,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:21,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:21,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:21,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:21,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:21,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:25:21,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:21,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:21,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:21,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:21,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:21,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:25:21,759 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 8 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:21,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092413619] [2020-10-14 23:25:21,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:21,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 23:25:21,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873215975] [2020-10-14 23:25:21,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 23:25:21,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:21,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 23:25:21,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:25:21,769 INFO L87 Difference]: Start difference. First operand 1074 states and 1177 transitions. Second operand 21 states.