/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=NARROWEST --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-01-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:21:19,571 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:21:19,574 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:21:19,616 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:21:19,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:21:19,618 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:21:19,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:21:19,629 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:21:19,631 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:21:19,632 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:21:19,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:21:19,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:21:19,640 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:21:19,641 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:21:19,642 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:21:19,643 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:21:19,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:21:19,645 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:21:19,647 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:21:19,648 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:21:19,650 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:21:19,651 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:21:19,652 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:21:19,653 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:21:19,655 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:21:19,655 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:21:19,656 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:21:19,657 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:21:19,657 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:21:19,658 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:21:19,658 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:21:19,659 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:21:19,660 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:21:19,660 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:21:19,661 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:21:19,662 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:21:19,662 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:21:19,663 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:21:19,663 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:21:19,664 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:21:19,664 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:21:19,665 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 [2020-10-13 10:21:19,687 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:21:19,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:21:19,689 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:21:19,689 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:21:19,689 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:21:19,689 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:21:19,690 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:21:19,690 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:21:19,690 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:21:19,690 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:21:19,690 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:21:19,690 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:21:19,691 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:21:19,691 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:21:19,691 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:21:19,691 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:21:19,691 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:21:19,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:21:19,692 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:21:19,692 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:21:19,692 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:21:19,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:21:19,693 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:21:19,693 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:21:19,693 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:21:19,693 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:21:19,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:21:19,694 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:21:19,694 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:21:19,694 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 10:21:20,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:21:20,068 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:21:20,075 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:21:20,078 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:21:20,078 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:21:20,079 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-01-1.i [2020-10-13 10:21:20,157 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bfcc53238/5f35372d691c4138b1c590f9a496d0f2/FLAGb7dd2d86a [2020-10-13 10:21:20,726 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:21:20,727 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-01-1.i [2020-10-13 10:21:20,742 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bfcc53238/5f35372d691c4138b1c590f9a496d0f2/FLAGb7dd2d86a [2020-10-13 10:21:20,980 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bfcc53238/5f35372d691c4138b1c590f9a496d0f2 [2020-10-13 10:21:20,989 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:21:20,990 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:21:20,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:21:20,992 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:21:20,996 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:21:20,997 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:21:20" (1/1) ... [2020-10-13 10:21:21,000 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bae0244 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:20, skipping insertion in model container [2020-10-13 10:21:21,000 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:21:20" (1/1) ... [2020-10-13 10:21:21,008 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:21:21,053 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:21:21,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:21:21,554 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:21:21,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:21:21,681 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:21:21,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:21 WrapperNode [2020-10-13 10:21:21,682 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:21:21,683 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:21:21,683 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:21:21,683 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:21:21,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:21" (1/1) ... [2020-10-13 10:21:21,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:21" (1/1) ... [2020-10-13 10:21:21,717 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:21" (1/1) ... [2020-10-13 10:21:21,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:21" (1/1) ... [2020-10-13 10:21:21,739 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:21" (1/1) ... [2020-10-13 10:21:21,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:21" (1/1) ... [2020-10-13 10:21:21,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:21" (1/1) ... [2020-10-13 10:21:21,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:21:21,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:21:21,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:21:21,766 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:21:21,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:21" (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 [2020-10-13 10:21:21,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:21:21,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:21:21,828 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:21:21,828 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-13 10:21:21,828 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-13 10:21:21,829 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-13 10:21:21,829 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-13 10:21:21,830 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-13 10:21:21,830 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-13 10:21:21,831 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-13 10:21:21,831 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-13 10:21:21,831 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-13 10:21:21,831 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-13 10:21:21,831 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-13 10:21:21,831 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-13 10:21:21,833 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-13 10:21:21,833 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-13 10:21:21,833 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-13 10:21:21,834 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-13 10:21:21,834 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-13 10:21:21,835 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-13 10:21:21,835 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-13 10:21:21,836 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-13 10:21:21,836 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-13 10:21:21,836 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-13 10:21:21,837 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-13 10:21:21,837 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-13 10:21:21,837 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-13 10:21:21,838 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-13 10:21:21,839 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-13 10:21:21,839 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-13 10:21:21,839 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-13 10:21:21,839 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-13 10:21:21,839 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-13 10:21:21,839 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-13 10:21:21,840 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-13 10:21:21,840 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-13 10:21:21,841 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-13 10:21:21,841 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-13 10:21:21,841 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-13 10:21:21,841 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-13 10:21:21,841 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-13 10:21:21,841 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-13 10:21:21,841 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-13 10:21:21,842 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-13 10:21:21,842 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-13 10:21:21,842 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-13 10:21:21,842 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-13 10:21:21,842 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-13 10:21:21,842 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-13 10:21:21,843 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-13 10:21:21,843 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-13 10:21:21,843 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-13 10:21:21,843 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 10:21:21,843 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-13 10:21:21,843 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-13 10:21:21,844 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-13 10:21:21,844 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-13 10:21:21,844 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-13 10:21:21,844 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-13 10:21:21,844 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-13 10:21:21,844 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-13 10:21:21,844 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 10:21:21,844 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-13 10:21:21,845 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-13 10:21:21,845 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-13 10:21:21,845 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 10:21:21,845 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-13 10:21:21,845 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-13 10:21:21,845 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-13 10:21:21,846 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-13 10:21:21,846 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-13 10:21:21,846 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-13 10:21:21,846 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-13 10:21:21,846 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-13 10:21:21,846 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-13 10:21:21,846 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-13 10:21:21,847 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-13 10:21:21,847 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-13 10:21:21,847 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-13 10:21:21,847 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-13 10:21:21,847 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-13 10:21:21,847 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-13 10:21:21,848 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-13 10:21:21,848 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-13 10:21:21,848 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-13 10:21:21,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-13 10:21:21,848 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-13 10:21:21,848 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-13 10:21:21,848 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-13 10:21:21,849 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-13 10:21:21,849 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-13 10:21:21,849 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-13 10:21:21,849 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-13 10:21:21,849 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-13 10:21:21,849 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-13 10:21:21,850 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-13 10:21:21,850 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-13 10:21:21,850 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-13 10:21:21,850 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-13 10:21:21,850 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-13 10:21:21,850 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-13 10:21:21,850 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-13 10:21:21,851 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-13 10:21:21,851 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-13 10:21:21,851 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-13 10:21:21,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 10:21:21,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:21:21,851 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:21:21,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 10:21:21,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-13 10:21:21,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-13 10:21:21,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:21:21,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:21:21,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:21:22,495 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:21:22,496 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-10-13 10:21:22,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:21:22 BoogieIcfgContainer [2020-10-13 10:21:22,501 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:21:22,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:21:22,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:21:22,506 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:21:22,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:21:20" (1/3) ... [2020-10-13 10:21:22,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2693c115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:21:22, skipping insertion in model container [2020-10-13 10:21:22,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:21" (2/3) ... [2020-10-13 10:21:22,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2693c115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:21:22, skipping insertion in model container [2020-10-13 10:21:22,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:21:22" (3/3) ... [2020-10-13 10:21:22,510 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-01-1.i [2020-10-13 10:21:22,522 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:21:22,531 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-10-13 10:21:22,546 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-10-13 10:21:22,574 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:21:22,574 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:21:22,575 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:21:22,575 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:21:22,575 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:21:22,575 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:21:22,575 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:21:22,575 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:21:22,600 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-10-13 10:21:22,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-13 10:21:22,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:22,609 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:22,609 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:22,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:22,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1861454184, now seen corresponding path program 1 times [2020-10-13 10:21:22,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:22,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1811084732] [2020-10-13 10:21:22,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:22,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:22,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:22,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:22,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 10:21:22,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:22,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-13 10:21:22,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:22,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:21:22,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:22,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 10:21:22,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 10:21:22,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:22,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:22,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:22,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:22,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:22,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:22,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 10:21:22,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:22,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:22,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:22,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:22,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:22,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:22,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1811084732] [2020-10-13 10:21:22,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:22,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:21:22,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244310562] [2020-10-13 10:21:22,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:21:22,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:22,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:21:22,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:22,991 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 4 states. [2020-10-13 10:21:23,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:23,256 INFO L93 Difference]: Finished difference Result 186 states and 302 transitions. [2020-10-13 10:21:23,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:21:23,258 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-13 10:21:23,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:23,270 INFO L225 Difference]: With dead ends: 186 [2020-10-13 10:21:23,270 INFO L226 Difference]: Without dead ends: 99 [2020-10-13 10:21:23,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:23,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-13 10:21:23,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 81. [2020-10-13 10:21:23,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-13 10:21:23,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2020-10-13 10:21:23,327 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 8 [2020-10-13 10:21:23,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:23,328 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2020-10-13 10:21:23,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:21:23,328 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2020-10-13 10:21:23,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-13 10:21:23,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:23,329 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:23,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:21:23,330 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:23,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:23,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1461031906, now seen corresponding path program 1 times [2020-10-13 10:21:23,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:23,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014039487] [2020-10-13 10:21:23,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:23,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:23,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:23,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:23,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:23,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 10:21:23,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:23,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-13 10:21:23,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:23,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:21:23,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 10:21:23,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 10:21:23,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 10:21:23,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:23,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:23,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:23,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:23,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:23,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:23,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:21:23,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:23,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:23,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:23,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:23,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:23,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:23,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014039487] [2020-10-13 10:21:23,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:23,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:21:23,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633562762] [2020-10-13 10:21:23,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:21:23,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:23,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:21:23,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:23,563 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand 4 states. [2020-10-13 10:21:23,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:23,717 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2020-10-13 10:21:23,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:21:23,717 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-13 10:21:23,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:23,719 INFO L225 Difference]: With dead ends: 84 [2020-10-13 10:21:23,719 INFO L226 Difference]: Without dead ends: 82 [2020-10-13 10:21:23,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:23,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-13 10:21:23,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-10-13 10:21:23,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-13 10:21:23,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2020-10-13 10:21:23,732 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 14 [2020-10-13 10:21:23,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:23,733 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2020-10-13 10:21:23,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:21:23,733 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2020-10-13 10:21:23,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-13 10:21:23,733 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:23,734 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:23,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:21:23,734 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:23,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:23,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1461033828, now seen corresponding path program 1 times [2020-10-13 10:21:23,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:23,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [947909070] [2020-10-13 10:21:23,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:23,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:23,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:23,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:23,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:23,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 10:21:23,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:23,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-13 10:21:23,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:23,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:21:23,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-13 10:21:23,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 10:21:23,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:23,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:23,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:23,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:23,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:23,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:23,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:23,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:21:23,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:23,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:23,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:23,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:23,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:23,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:23,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [947909070] [2020-10-13 10:21:23,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:23,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 10:21:23,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902318499] [2020-10-13 10:21:23,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:21:23,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:23,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:21:23,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:21:23,924 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand 5 states. [2020-10-13 10:21:24,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:24,098 INFO L93 Difference]: Finished difference Result 83 states and 92 transitions. [2020-10-13 10:21:24,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:21:24,098 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-13 10:21:24,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:24,100 INFO L225 Difference]: With dead ends: 83 [2020-10-13 10:21:24,100 INFO L226 Difference]: Without dead ends: 81 [2020-10-13 10:21:24,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:21:24,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-13 10:21:24,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2020-10-13 10:21:24,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-13 10:21:24,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 88 transitions. [2020-10-13 10:21:24,109 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 88 transitions. Word has length 14 [2020-10-13 10:21:24,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:24,110 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 88 transitions. [2020-10-13 10:21:24,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:21:24,110 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 88 transitions. [2020-10-13 10:21:24,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-13 10:21:24,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:24,111 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:24,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 10:21:24,112 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:24,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:24,112 INFO L82 PathProgramCache]: Analyzing trace with hash 177734485, now seen corresponding path program 1 times [2020-10-13 10:21:24,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:24,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121381370] [2020-10-13 10:21:24,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:24,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:24,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:24,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:24,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:24,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 10:21:24,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:21:24,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-13 10:21:24,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:24,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:21:24,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 10:21:24,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 10:21:24,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:24,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:24,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:24,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:24,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:24,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:24,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:24,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:21:24,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:24,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:24,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:24,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:24,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:24,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:24,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121381370] [2020-10-13 10:21:24,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:24,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:21:24,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048639944] [2020-10-13 10:21:24,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:21:24,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:24,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:21:24,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:24,359 INFO L87 Difference]: Start difference. First operand 79 states and 88 transitions. Second operand 4 states. [2020-10-13 10:21:24,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:24,498 INFO L93 Difference]: Finished difference Result 82 states and 92 transitions. [2020-10-13 10:21:24,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:21:24,498 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-13 10:21:24,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:24,499 INFO L225 Difference]: With dead ends: 82 [2020-10-13 10:21:24,499 INFO L226 Difference]: Without dead ends: 78 [2020-10-13 10:21:24,500 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:24,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-13 10:21:24,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 75. [2020-10-13 10:21:24,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-13 10:21:24,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 84 transitions. [2020-10-13 10:21:24,508 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 84 transitions. Word has length 19 [2020-10-13 10:21:24,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:24,508 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 84 transitions. [2020-10-13 10:21:24,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:21:24,508 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 84 transitions. [2020-10-13 10:21:24,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-13 10:21:24,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:24,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:24,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 10:21:24,510 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:24,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:24,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1214805939, now seen corresponding path program 1 times [2020-10-13 10:21:24,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:24,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95116027] [2020-10-13 10:21:24,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:24,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:24,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:24,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:24,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:24,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:24,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:24,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 10:21:24,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:21:24,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-13 10:21:24,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:24,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:21:24,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 10:21:24,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 10:21:24,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:24,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:24,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:24,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:24,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:24,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:24,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:21:24,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:24,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:24,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:24,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:24,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:24,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:24,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95116027] [2020-10-13 10:21:24,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:24,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 10:21:24,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248946261] [2020-10-13 10:21:24,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:21:24,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:24,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:21:24,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:21:24,857 INFO L87 Difference]: Start difference. First operand 75 states and 84 transitions. Second operand 5 states. [2020-10-13 10:21:25,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:25,056 INFO L93 Difference]: Finished difference Result 191 states and 213 transitions. [2020-10-13 10:21:25,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:21:25,057 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-13 10:21:25,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:25,058 INFO L225 Difference]: With dead ends: 191 [2020-10-13 10:21:25,059 INFO L226 Difference]: Without dead ends: 128 [2020-10-13 10:21:25,060 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 [2020-10-13 10:21:25,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-13 10:21:25,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 77. [2020-10-13 10:21:25,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-13 10:21:25,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2020-10-13 10:21:25,068 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 20 [2020-10-13 10:21:25,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:25,068 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2020-10-13 10:21:25,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:21:25,068 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2020-10-13 10:21:25,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-13 10:21:25,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:25,069 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:25,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 10:21:25,070 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:25,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:25,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1894864309, now seen corresponding path program 1 times [2020-10-13 10:21:25,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:25,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [92498148] [2020-10-13 10:21:25,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:25,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:25,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:25,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:25,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:25,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 10:21:25,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:25,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 10:21:25,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:25,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:21:25,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 10:21:25,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 10:21:25,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:25,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:25,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:25,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:25,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:25,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:25,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:25,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:21:25,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:25,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:25,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:25,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:25,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:25,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:25,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [92498148] [2020-10-13 10:21:25,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:25,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 10:21:25,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942333639] [2020-10-13 10:21:25,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:21:25,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:25,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:21:25,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:21:25,217 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand 5 states. [2020-10-13 10:21:25,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:25,403 INFO L93 Difference]: Finished difference Result 95 states and 107 transitions. [2020-10-13 10:21:25,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:21:25,404 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-13 10:21:25,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:25,405 INFO L225 Difference]: With dead ends: 95 [2020-10-13 10:21:25,405 INFO L226 Difference]: Without dead ends: 75 [2020-10-13 10:21:25,406 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 [2020-10-13 10:21:25,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-13 10:21:25,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2020-10-13 10:21:25,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-13 10:21:25,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2020-10-13 10:21:25,412 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 20 [2020-10-13 10:21:25,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:25,413 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2020-10-13 10:21:25,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:21:25,413 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2020-10-13 10:21:25,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-13 10:21:25,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:25,414 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:25,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 10:21:25,415 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:25,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:25,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1337316768, now seen corresponding path program 1 times [2020-10-13 10:21:25,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:25,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1021329048] [2020-10-13 10:21:25,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:25,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:25,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:25,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 10:21:25,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:25,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 10:21:25,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:25,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:21:25,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 10:21:25,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 10:21:25,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:25,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:25,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:25,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:25,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:25,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:25,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:25,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:25,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:25,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:25,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:25,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:25,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:25,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:25,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1021329048] [2020-10-13 10:21:25,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:25,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:21:25,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111483879] [2020-10-13 10:21:25,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:21:25,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:25,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:21:25,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:25,494 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand 4 states. [2020-10-13 10:21:25,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:25,602 INFO L93 Difference]: Finished difference Result 98 states and 111 transitions. [2020-10-13 10:21:25,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:21:25,603 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-13 10:21:25,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:25,606 INFO L225 Difference]: With dead ends: 98 [2020-10-13 10:21:25,606 INFO L226 Difference]: Without dead ends: 96 [2020-10-13 10:21:25,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:25,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-13 10:21:25,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 76. [2020-10-13 10:21:25,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-13 10:21:25,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions. [2020-10-13 10:21:25,614 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 24 [2020-10-13 10:21:25,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:25,614 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions. [2020-10-13 10:21:25,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:21:25,614 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions. [2020-10-13 10:21:25,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-13 10:21:25,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:25,615 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:25,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 10:21:25,616 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:25,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:25,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1492857654, now seen corresponding path program 1 times [2020-10-13 10:21:25,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:25,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990329575] [2020-10-13 10:21:25,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:25,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:25,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:25,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:25,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:25,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:25,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:25,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 10:21:25,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:21:25,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-13 10:21:25,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:25,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:21:25,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 10:21:25,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 10:21:25,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:25,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:25,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:25,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:25,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:25,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:25,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:25,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:25,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:25,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:25,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:25,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:25,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:25,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:25,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990329575] [2020-10-13 10:21:25,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:25,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:21:25,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690529161] [2020-10-13 10:21:25,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:21:25,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:25,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:21:25,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:25,925 INFO L87 Difference]: Start difference. First operand 76 states and 86 transitions. Second operand 4 states. [2020-10-13 10:21:26,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:26,056 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-10-13 10:21:26,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:21:26,056 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-13 10:21:26,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:26,057 INFO L225 Difference]: With dead ends: 76 [2020-10-13 10:21:26,058 INFO L226 Difference]: Without dead ends: 74 [2020-10-13 10:21:26,058 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:26,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-13 10:21:26,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-13 10:21:26,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-13 10:21:26,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 84 transitions. [2020-10-13 10:21:26,063 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 84 transitions. Word has length 25 [2020-10-13 10:21:26,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:26,063 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 84 transitions. [2020-10-13 10:21:26,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:21:26,064 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 84 transitions. [2020-10-13 10:21:26,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-13 10:21:26,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:26,065 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:26,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 10:21:26,065 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:26,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:26,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1632693981, now seen corresponding path program 1 times [2020-10-13 10:21:26,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:26,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496550654] [2020-10-13 10:21:26,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:26,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:26,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:26,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:26,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:26,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 10:21:26,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:26,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 10:21:26,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:26,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:21:26,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 10:21:26,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 10:21:26,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:26,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:26,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:26,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:26,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:26,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:26,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:26,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:26,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:26,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:26,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:26,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:26,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:26,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:26,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496550654] [2020-10-13 10:21:26,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:26,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 10:21:26,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190165771] [2020-10-13 10:21:26,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:21:26,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:26,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:21:26,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:21:26,240 INFO L87 Difference]: Start difference. First operand 74 states and 84 transitions. Second operand 5 states. [2020-10-13 10:21:26,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:26,413 INFO L93 Difference]: Finished difference Result 75 states and 85 transitions. [2020-10-13 10:21:26,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:21:26,414 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-10-13 10:21:26,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:26,415 INFO L225 Difference]: With dead ends: 75 [2020-10-13 10:21:26,415 INFO L226 Difference]: Without dead ends: 73 [2020-10-13 10:21:26,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:21:26,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-13 10:21:26,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2020-10-13 10:21:26,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-13 10:21:26,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 82 transitions. [2020-10-13 10:21:26,421 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 82 transitions. Word has length 27 [2020-10-13 10:21:26,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:26,421 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 82 transitions. [2020-10-13 10:21:26,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:21:26,422 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 82 transitions. [2020-10-13 10:21:26,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-13 10:21:26,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:26,423 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:26,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 10:21:26,423 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:26,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:26,424 INFO L82 PathProgramCache]: Analyzing trace with hash 668074133, now seen corresponding path program 1 times [2020-10-13 10:21:26,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:26,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831776532] [2020-10-13 10:21:26,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:26,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:26,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:26,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:26,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:26,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:26,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:26,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:26,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:26,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 10:21:26,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 10:21:26,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-13 10:21:26,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:26,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:21:26,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 10:21:26,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 10:21:26,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:26,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:26,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:26,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:26,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:26,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:26,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:26,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:26,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:26,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:26,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:26,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:26,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:26,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:26,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831776532] [2020-10-13 10:21:26,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:26,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 10:21:26,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772065598] [2020-10-13 10:21:26,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 10:21:26,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:26,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 10:21:26,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:21:26,716 INFO L87 Difference]: Start difference. First operand 72 states and 82 transitions. Second operand 7 states. [2020-10-13 10:21:27,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:27,008 INFO L93 Difference]: Finished difference Result 171 states and 195 transitions. [2020-10-13 10:21:27,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 10:21:27,008 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-10-13 10:21:27,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:27,009 INFO L225 Difference]: With dead ends: 171 [2020-10-13 10:21:27,010 INFO L226 Difference]: Without dead ends: 132 [2020-10-13 10:21:27,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:21:27,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-13 10:21:27,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 82. [2020-10-13 10:21:27,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-13 10:21:27,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 93 transitions. [2020-10-13 10:21:27,016 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 93 transitions. Word has length 28 [2020-10-13 10:21:27,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:27,017 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 93 transitions. [2020-10-13 10:21:27,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 10:21:27,017 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 93 transitions. [2020-10-13 10:21:27,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-13 10:21:27,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:27,018 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:27,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 10:21:27,019 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:27,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:27,019 INFO L82 PathProgramCache]: Analyzing trace with hash 567478293, now seen corresponding path program 1 times [2020-10-13 10:21:27,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:27,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210822288] [2020-10-13 10:21:27,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:27,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:27,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:27,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:27,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:27,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:27,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:27,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:27,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 10:21:27,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 10:21:27,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 582 [2020-10-13 10:21:27,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:27,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:21:27,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 10:21:27,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 10:21:27,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:28,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:28,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:28,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:28,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:28,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:28,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:28,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:21:28,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:28,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:28,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:28,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:28,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:28,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:28,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1210822288] [2020-10-13 10:21:28,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:28,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 10:21:28,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322985451] [2020-10-13 10:21:28,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 10:21:28,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:28,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 10:21:28,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:21:28,122 INFO L87 Difference]: Start difference. First operand 82 states and 93 transitions. Second operand 8 states. [2020-10-13 10:21:28,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:28,770 INFO L93 Difference]: Finished difference Result 149 states and 169 transitions. [2020-10-13 10:21:28,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:21:28,771 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-10-13 10:21:28,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:28,772 INFO L225 Difference]: With dead ends: 149 [2020-10-13 10:21:28,772 INFO L226 Difference]: Without dead ends: 147 [2020-10-13 10:21:28,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:21:28,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-13 10:21:28,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 100. [2020-10-13 10:21:28,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-13 10:21:28,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 116 transitions. [2020-10-13 10:21:28,780 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 116 transitions. Word has length 28 [2020-10-13 10:21:28,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:28,781 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 116 transitions. [2020-10-13 10:21:28,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 10:21:28,781 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 116 transitions. [2020-10-13 10:21:28,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-13 10:21:28,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:28,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:28,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 10:21:28,783 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:28,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:28,783 INFO L82 PathProgramCache]: Analyzing trace with hash 758661948, now seen corresponding path program 1 times [2020-10-13 10:21:28,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:28,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111659152] [2020-10-13 10:21:28,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:28,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:28,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:28,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:28,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:28,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:29,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:29,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:29,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 10:21:29,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 10:21:29,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 550 [2020-10-13 10:21:29,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:29,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:21:29,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 10:21:29,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 10:21:29,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:29,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:29,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:29,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:29,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:29,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:29,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:29,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:29,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:29,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:29,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:29,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:29,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:29,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:29,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111659152] [2020-10-13 10:21:29,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:29,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 10:21:29,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928157185] [2020-10-13 10:21:29,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:21:29,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:29,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:21:29,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:21:29,534 INFO L87 Difference]: Start difference. First operand 100 states and 116 transitions. Second operand 9 states. [2020-10-13 10:21:30,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:30,196 INFO L93 Difference]: Finished difference Result 233 states and 262 transitions. [2020-10-13 10:21:30,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:21:30,196 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2020-10-13 10:21:30,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:30,198 INFO L225 Difference]: With dead ends: 233 [2020-10-13 10:21:30,198 INFO L226 Difference]: Without dead ends: 231 [2020-10-13 10:21:30,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:21:30,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-10-13 10:21:30,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 108. [2020-10-13 10:21:30,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-13 10:21:30,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 125 transitions. [2020-10-13 10:21:30,208 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 125 transitions. Word has length 31 [2020-10-13 10:21:30,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:30,208 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 125 transitions. [2020-10-13 10:21:30,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:21:30,208 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 125 transitions. [2020-10-13 10:21:30,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-13 10:21:30,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:30,210 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:30,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 10:21:30,210 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:30,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:30,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1719230162, now seen corresponding path program 1 times [2020-10-13 10:21:30,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:30,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499729151] [2020-10-13 10:21:30,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:30,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:30,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:30,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:30,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:30,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:30,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:30,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:30,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:30,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:30,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:30,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 10:21:30,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 10:21:30,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 512 [2020-10-13 10:21:30,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:30,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:21:30,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 10:21:30,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 10:21:30,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:30,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:30,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:30,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:30,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:30,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:30,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:30,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:30,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:30,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:30,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:30,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:30,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:30,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499729151] [2020-10-13 10:21:30,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:30,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 10:21:30,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004428459] [2020-10-13 10:21:30,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 10:21:30,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:30,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 10:21:30,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:21:30,803 INFO L87 Difference]: Start difference. First operand 108 states and 125 transitions. Second operand 7 states. [2020-10-13 10:21:31,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:31,176 INFO L93 Difference]: Finished difference Result 241 states and 277 transitions. [2020-10-13 10:21:31,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:21:31,176 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-10-13 10:21:31,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:31,178 INFO L225 Difference]: With dead ends: 241 [2020-10-13 10:21:31,178 INFO L226 Difference]: Without dead ends: 202 [2020-10-13 10:21:31,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:21:31,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-13 10:21:31,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 143. [2020-10-13 10:21:31,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-13 10:21:31,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 171 transitions. [2020-10-13 10:21:31,189 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 171 transitions. Word has length 33 [2020-10-13 10:21:31,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:31,190 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 171 transitions. [2020-10-13 10:21:31,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 10:21:31,190 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 171 transitions. [2020-10-13 10:21:31,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-13 10:21:31,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:31,191 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:31,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 10:21:31,192 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:31,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:31,192 INFO L82 PathProgramCache]: Analyzing trace with hash -999338862, now seen corresponding path program 1 times [2020-10-13 10:21:31,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:31,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208203224] [2020-10-13 10:21:31,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:31,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:31,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:31,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:31,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 10:21:31,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:31,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 10:21:31,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:31,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:21:31,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:31,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 10:21:31,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:31,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:31,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:31,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:31,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:31,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:31,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:31,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:31,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:31,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:31,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:31,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:31,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:31,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:31,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208203224] [2020-10-13 10:21:31,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:31,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 10:21:31,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630601478] [2020-10-13 10:21:31,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:21:31,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:31,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:21:31,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:21:31,365 INFO L87 Difference]: Start difference. First operand 143 states and 171 transitions. Second operand 6 states. [2020-10-13 10:21:31,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:31,633 INFO L93 Difference]: Finished difference Result 239 states and 282 transitions. [2020-10-13 10:21:31,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 10:21:31,634 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-10-13 10:21:31,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:31,636 INFO L225 Difference]: With dead ends: 239 [2020-10-13 10:21:31,636 INFO L226 Difference]: Without dead ends: 181 [2020-10-13 10:21:31,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:21:31,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-13 10:21:31,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 158. [2020-10-13 10:21:31,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-13 10:21:31,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 188 transitions. [2020-10-13 10:21:31,652 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 188 transitions. Word has length 33 [2020-10-13 10:21:31,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:31,652 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 188 transitions. [2020-10-13 10:21:31,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:21:31,652 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 188 transitions. [2020-10-13 10:21:31,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-13 10:21:31,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:31,653 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:31,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 10:21:31,654 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:31,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:31,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1941174974, now seen corresponding path program 1 times [2020-10-13 10:21:31,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:31,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1093833076] [2020-10-13 10:21:31,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:31,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:31,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:31,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:31,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 10:21:31,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:31,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 10:21:31,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:31,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:21:31,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 10:21:31,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 10:21:31,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:31,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:31,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:31,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:31,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:31,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:31,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:31,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:31,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:31,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:31,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:31,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:31,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:31,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:31,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1093833076] [2020-10-13 10:21:31,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:31,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:21:31,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895752202] [2020-10-13 10:21:31,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:21:31,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:31,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:21:31,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:31,742 INFO L87 Difference]: Start difference. First operand 158 states and 188 transitions. Second operand 4 states. [2020-10-13 10:21:31,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:31,864 INFO L93 Difference]: Finished difference Result 207 states and 248 transitions. [2020-10-13 10:21:31,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:21:31,865 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-10-13 10:21:31,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:31,866 INFO L225 Difference]: With dead ends: 207 [2020-10-13 10:21:31,867 INFO L226 Difference]: Without dead ends: 205 [2020-10-13 10:21:31,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:31,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-10-13 10:21:31,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 194. [2020-10-13 10:21:31,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-13 10:21:31,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 230 transitions. [2020-10-13 10:21:31,882 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 230 transitions. Word has length 35 [2020-10-13 10:21:31,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:31,884 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 230 transitions. [2020-10-13 10:21:31,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:21:31,884 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 230 transitions. [2020-10-13 10:21:31,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-13 10:21:31,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:31,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:31,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 10:21:31,886 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:31,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:31,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1766986308, now seen corresponding path program 1 times [2020-10-13 10:21:31,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:31,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447673985] [2020-10-13 10:21:31,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:31,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:31,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:31,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 10:21:31,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:31,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 10:21:31,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:31,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:21:31,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 10:21:31,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 10:21:31,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:31,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:31,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:31,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:31,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:31,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:31,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:31,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:21:31,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:31,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:31,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:31,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:31,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:31,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:31,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [447673985] [2020-10-13 10:21:31,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:31,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:21:31,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409397999] [2020-10-13 10:21:31,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:21:31,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:31,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:21:31,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:31,982 INFO L87 Difference]: Start difference. First operand 194 states and 230 transitions. Second operand 4 states. [2020-10-13 10:21:32,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:32,122 INFO L93 Difference]: Finished difference Result 326 states and 391 transitions. [2020-10-13 10:21:32,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:21:32,122 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-10-13 10:21:32,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:32,124 INFO L225 Difference]: With dead ends: 326 [2020-10-13 10:21:32,124 INFO L226 Difference]: Without dead ends: 217 [2020-10-13 10:21:32,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:32,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-13 10:21:32,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 191. [2020-10-13 10:21:32,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-13 10:21:32,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 228 transitions. [2020-10-13 10:21:32,142 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 228 transitions. Word has length 35 [2020-10-13 10:21:32,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:32,142 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 228 transitions. [2020-10-13 10:21:32,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:21:32,143 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 228 transitions. [2020-10-13 10:21:32,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-13 10:21:32,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:32,144 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:32,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 10:21:32,144 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:32,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:32,145 INFO L82 PathProgramCache]: Analyzing trace with hash 930038423, now seen corresponding path program 1 times [2020-10-13 10:21:32,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:32,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [87630340] [2020-10-13 10:21:32,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:32,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:32,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:32,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:32,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:32,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 10:21:32,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:32,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-13 10:21:32,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:32,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:21:32,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 10:21:32,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 10:21:32,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:32,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:32,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:32,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:32,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:32,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:32,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:32,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:32,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:32,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:32,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:32,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:32,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:32,474 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:32,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [87630340] [2020-10-13 10:21:32,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:32,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 10:21:32,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728199101] [2020-10-13 10:21:32,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 10:21:32,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:32,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 10:21:32,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:21:32,478 INFO L87 Difference]: Start difference. First operand 191 states and 228 transitions. Second operand 7 states. [2020-10-13 10:21:32,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:32,886 INFO L93 Difference]: Finished difference Result 334 states and 394 transitions. [2020-10-13 10:21:32,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 10:21:32,887 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-10-13 10:21:32,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:32,889 INFO L225 Difference]: With dead ends: 334 [2020-10-13 10:21:32,890 INFO L226 Difference]: Without dead ends: 303 [2020-10-13 10:21:32,891 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:21:32,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-10-13 10:21:32,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 222. [2020-10-13 10:21:32,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-10-13 10:21:32,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 266 transitions. [2020-10-13 10:21:32,920 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 266 transitions. Word has length 36 [2020-10-13 10:21:32,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:32,920 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 266 transitions. [2020-10-13 10:21:32,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 10:21:32,921 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 266 transitions. [2020-10-13 10:21:32,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 10:21:32,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:32,921 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:32,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 10:21:32,922 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:32,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:32,922 INFO L82 PathProgramCache]: Analyzing trace with hash 958849274, now seen corresponding path program 1 times [2020-10-13 10:21:32,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:32,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105906413] [2020-10-13 10:21:32,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:32,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:32,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:32,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:33,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:33,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:33,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:33,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:33,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:33,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:35,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:35,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:35,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:35,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:35,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:36,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:37,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:37,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 10:21:37,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 10:21:37,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 10:21:37,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:37,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:21:37,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 10:21:37,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:21:37,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:37,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:37,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:37,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:37,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:37,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:37,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:37,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:37,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:37,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:37,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:37,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:37,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:37,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105906413] [2020-10-13 10:21:37,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:37,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 10:21:37,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547800633] [2020-10-13 10:21:37,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:21:37,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:37,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:21:37,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:21:37,996 INFO L87 Difference]: Start difference. First operand 222 states and 266 transitions. Second operand 6 states. [2020-10-13 10:21:38,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:38,214 INFO L93 Difference]: Finished difference Result 368 states and 446 transitions. [2020-10-13 10:21:38,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 10:21:38,215 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-10-13 10:21:38,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:38,216 INFO L225 Difference]: With dead ends: 368 [2020-10-13 10:21:38,216 INFO L226 Difference]: Without dead ends: 231 [2020-10-13 10:21:38,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:21:38,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-10-13 10:21:38,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 224. [2020-10-13 10:21:38,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-10-13 10:21:38,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 268 transitions. [2020-10-13 10:21:38,233 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 268 transitions. Word has length 40 [2020-10-13 10:21:38,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:38,233 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 268 transitions. [2020-10-13 10:21:38,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:21:38,233 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 268 transitions. [2020-10-13 10:21:38,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 10:21:38,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:38,234 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:38,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 10:21:38,234 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:38,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:38,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1979917628, now seen corresponding path program 1 times [2020-10-13 10:21:38,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:38,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653935932] [2020-10-13 10:21:38,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:38,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:38,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:38,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:38,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:38,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:38,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:38,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:39,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:39,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:39,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:39,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:40,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:40,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:40,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:40,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 10:21:40,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 10:21:40,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2679 [2020-10-13 10:21:40,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:40,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:21:40,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 10:21:40,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 10:21:40,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:41,280 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 34 [2020-10-13 10:21:41,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:41,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:41,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:41,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:41,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:41,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:41,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:41,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:41,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:41,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:41,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:41,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:41,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653935932] [2020-10-13 10:21:41,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:41,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 10:21:41,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353350680] [2020-10-13 10:21:41,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:21:41,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:41,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:21:41,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:21:41,443 INFO L87 Difference]: Start difference. First operand 224 states and 268 transitions. Second operand 12 states. [2020-10-13 10:21:42,026 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2020-10-13 10:21:43,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:43,027 INFO L93 Difference]: Finished difference Result 502 states and 603 transitions. [2020-10-13 10:21:43,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 10:21:43,027 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 40 [2020-10-13 10:21:43,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:43,030 INFO L225 Difference]: With dead ends: 502 [2020-10-13 10:21:43,030 INFO L226 Difference]: Without dead ends: 500 [2020-10-13 10:21:43,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=146, Invalid=454, Unknown=0, NotChecked=0, Total=600 [2020-10-13 10:21:43,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-10-13 10:21:43,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 265. [2020-10-13 10:21:43,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-13 10:21:43,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 318 transitions. [2020-10-13 10:21:43,052 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 318 transitions. Word has length 40 [2020-10-13 10:21:43,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:43,052 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 318 transitions. [2020-10-13 10:21:43,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:21:43,052 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 318 transitions. [2020-10-13 10:21:43,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 10:21:43,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:43,053 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:43,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 10:21:43,054 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:43,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:43,054 INFO L82 PathProgramCache]: Analyzing trace with hash -2026576836, now seen corresponding path program 1 times [2020-10-13 10:21:43,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:43,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330138174] [2020-10-13 10:21:43,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:43,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:43,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:43,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:43,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 10:21:43,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:43,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-13 10:21:43,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:43,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:21:43,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:43,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 10:21:43,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:43,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:43,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:43,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:43,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:43,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:43,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:43,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:43,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:43,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:43,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:43,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:43,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:43,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:43,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330138174] [2020-10-13 10:21:43,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:43,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:21:43,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299306760] [2020-10-13 10:21:43,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:21:43,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:43,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:21:43,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:21:43,560 INFO L87 Difference]: Start difference. First operand 265 states and 318 transitions. Second operand 11 states. [2020-10-13 10:21:44,291 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 59 [2020-10-13 10:21:45,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:45,014 INFO L93 Difference]: Finished difference Result 511 states and 601 transitions. [2020-10-13 10:21:45,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 10:21:45,014 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-10-13 10:21:45,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:45,017 INFO L225 Difference]: With dead ends: 511 [2020-10-13 10:21:45,017 INFO L226 Difference]: Without dead ends: 509 [2020-10-13 10:21:45,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2020-10-13 10:21:45,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2020-10-13 10:21:45,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 287. [2020-10-13 10:21:45,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-10-13 10:21:45,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 344 transitions. [2020-10-13 10:21:45,040 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 344 transitions. Word has length 40 [2020-10-13 10:21:45,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:45,040 INFO L479 AbstractCegarLoop]: Abstraction has 287 states and 344 transitions. [2020-10-13 10:21:45,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:21:45,040 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 344 transitions. [2020-10-13 10:21:45,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 10:21:45,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:45,041 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:45,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 10:21:45,042 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:45,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:45,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1295314108, now seen corresponding path program 1 times [2020-10-13 10:21:45,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:45,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [461746783] [2020-10-13 10:21:45,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:45,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:45,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:45,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-13 10:21:45,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:45,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-10-13 10:21:45,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:45,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:21:45,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:45,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 10:21:45,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:45,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:45,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:45,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:45,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:45,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:45,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:45,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:45,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:45,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:45,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:45,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:45,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:45,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [461746783] [2020-10-13 10:21:45,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:45,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:21:45,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309170371] [2020-10-13 10:21:45,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:21:45,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:45,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:21:45,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:21:45,723 INFO L87 Difference]: Start difference. First operand 287 states and 344 transitions. Second operand 11 states. [2020-10-13 10:21:46,557 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2020-10-13 10:21:46,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:46,965 INFO L93 Difference]: Finished difference Result 516 states and 613 transitions. [2020-10-13 10:21:46,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 10:21:46,966 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-10-13 10:21:46,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:46,969 INFO L225 Difference]: With dead ends: 516 [2020-10-13 10:21:46,969 INFO L226 Difference]: Without dead ends: 514 [2020-10-13 10:21:46,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:21:46,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2020-10-13 10:21:46,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 295. [2020-10-13 10:21:46,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-10-13 10:21:46,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 353 transitions. [2020-10-13 10:21:46,997 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 353 transitions. Word has length 40 [2020-10-13 10:21:46,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:46,998 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 353 transitions. [2020-10-13 10:21:46,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:21:46,998 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 353 transitions. [2020-10-13 10:21:46,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-13 10:21:46,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:46,999 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:46,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 10:21:47,000 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:47,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:47,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1848258342, now seen corresponding path program 1 times [2020-10-13 10:21:47,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:47,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7884500] [2020-10-13 10:21:47,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:47,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:47,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:47,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:47,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:47,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:47,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:47,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:47,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:47,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:47,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:47,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:47,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:47,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:47,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:49,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:49,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 10:21:49,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 10:21:49,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2683 [2020-10-13 10:21:49,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:49,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:21:49,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 10:21:49,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:21:49,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:49,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:49,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:49,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:49,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:49,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:49,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:49,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:49,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:49,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:49,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:49,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:49,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:49,759 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:49,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7884500] [2020-10-13 10:21:49,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:49,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 10:21:49,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476216998] [2020-10-13 10:21:49,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:21:49,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:49,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:21:49,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:21:49,771 INFO L87 Difference]: Start difference. First operand 295 states and 353 transitions. Second operand 6 states. [2020-10-13 10:21:49,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:49,938 INFO L93 Difference]: Finished difference Result 389 states and 464 transitions. [2020-10-13 10:21:49,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 10:21:49,940 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2020-10-13 10:21:49,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:49,941 INFO L225 Difference]: With dead ends: 389 [2020-10-13 10:21:49,942 INFO L226 Difference]: Without dead ends: 227 [2020-10-13 10:21:49,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:21:49,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-13 10:21:49,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 197. [2020-10-13 10:21:49,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-13 10:21:49,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 223 transitions. [2020-10-13 10:21:49,966 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 223 transitions. Word has length 42 [2020-10-13 10:21:49,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:49,966 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 223 transitions. [2020-10-13 10:21:49,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:21:49,967 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 223 transitions. [2020-10-13 10:21:49,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-13 10:21:49,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:49,967 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:49,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 10:21:49,968 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:49,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:49,968 INFO L82 PathProgramCache]: Analyzing trace with hash 944292021, now seen corresponding path program 1 times [2020-10-13 10:21:49,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:49,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493543580] [2020-10-13 10:21:49,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:49,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:49,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:50,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:50,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:50,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:50,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:50,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:50,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:50,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:50,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:51,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:51,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:51,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:51,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:51,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:51,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:51,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:52,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:52,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:54,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:54,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 10:21:54,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-13 10:21:54,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4098 [2020-10-13 10:21:54,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:54,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:21:54,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:54,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 10:21:54,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:54,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:54,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:54,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:54,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:54,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:54,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:54,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:54,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:54,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:54,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:54,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:54,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:54,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:54,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493543580] [2020-10-13 10:21:54,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:54,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 10:21:54,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895351482] [2020-10-13 10:21:54,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 10:21:54,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:54,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 10:21:54,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:21:54,305 INFO L87 Difference]: Start difference. First operand 197 states and 223 transitions. Second operand 10 states. [2020-10-13 10:21:54,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:54,760 INFO L93 Difference]: Finished difference Result 305 states and 341 transitions. [2020-10-13 10:21:54,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:21:54,761 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 43 [2020-10-13 10:21:54,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:54,763 INFO L225 Difference]: With dead ends: 305 [2020-10-13 10:21:54,763 INFO L226 Difference]: Without dead ends: 240 [2020-10-13 10:21:54,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:21:54,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-10-13 10:21:54,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 169. [2020-10-13 10:21:54,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-13 10:21:54,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 189 transitions. [2020-10-13 10:21:54,777 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 189 transitions. Word has length 43 [2020-10-13 10:21:54,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:54,777 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 189 transitions. [2020-10-13 10:21:54,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 10:21:54,777 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 189 transitions. [2020-10-13 10:21:54,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-13 10:21:54,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:54,778 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:54,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 10:21:54,779 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:54,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:54,779 INFO L82 PathProgramCache]: Analyzing trace with hash 608870837, now seen corresponding path program 1 times [2020-10-13 10:21:54,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:54,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358889905] [2020-10-13 10:21:54,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:54,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:54,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:54,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:54,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:55,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:55,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 10:21:55,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:21:55,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 520 [2020-10-13 10:21:55,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:55,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:21:55,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 10:21:55,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 10:21:55,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:55,580 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-10-13 10:21:55,755 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2020-10-13 10:21:56,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:56,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:56,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:56,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:56,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:56,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:56,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:56,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:56,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:56,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:56,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:56,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:56,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:56,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1358889905] [2020-10-13 10:21:56,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:56,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:21:56,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86278509] [2020-10-13 10:21:56,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:21:56,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:56,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:21:56,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:21:56,099 INFO L87 Difference]: Start difference. First operand 169 states and 189 transitions. Second operand 11 states. [2020-10-13 10:21:56,455 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 78 [2020-10-13 10:21:56,827 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 90 [2020-10-13 10:21:57,063 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 87 [2020-10-13 10:21:57,521 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 91 [2020-10-13 10:21:57,969 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 57 [2020-10-13 10:21:58,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:58,390 INFO L93 Difference]: Finished difference Result 285 states and 317 transitions. [2020-10-13 10:21:58,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 10:21:58,391 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2020-10-13 10:21:58,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:58,392 INFO L225 Difference]: With dead ends: 285 [2020-10-13 10:21:58,392 INFO L226 Difference]: Without dead ends: 283 [2020-10-13 10:21:58,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=142, Invalid=458, Unknown=0, NotChecked=0, Total=600 [2020-10-13 10:21:58,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-13 10:21:58,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 196. [2020-10-13 10:21:58,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-13 10:21:58,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 220 transitions. [2020-10-13 10:21:58,411 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 220 transitions. Word has length 43 [2020-10-13 10:21:58,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:58,411 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 220 transitions. [2020-10-13 10:21:58,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:21:58,411 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 220 transitions. [2020-10-13 10:21:58,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 10:21:58,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:58,412 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:58,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 10:21:58,413 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:21:58,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:58,413 INFO L82 PathProgramCache]: Analyzing trace with hash 938403788, now seen corresponding path program 1 times [2020-10-13 10:21:58,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:58,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918448809] [2020-10-13 10:21:58,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:58,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:58,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:58,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:58,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:58,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:58,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:58,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:59,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:00,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:00,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:01,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:01,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 10:22:01,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 10:22:01,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2939 [2020-10-13 10:22:01,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:01,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:22:01,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 10:22:01,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 10:22:01,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:01,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:01,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:01,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:01,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:01,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:01,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:01,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:01,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:01,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:01,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:01,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:01,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:01,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:01,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918448809] [2020-10-13 10:22:01,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:01,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:22:01,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839702472] [2020-10-13 10:22:01,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:22:01,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:01,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:22:01,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:22:01,476 INFO L87 Difference]: Start difference. First operand 196 states and 220 transitions. Second operand 9 states. [2020-10-13 10:22:01,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:01,978 INFO L93 Difference]: Finished difference Result 234 states and 259 transitions. [2020-10-13 10:22:01,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 10:22:01,978 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2020-10-13 10:22:01,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:01,979 INFO L225 Difference]: With dead ends: 234 [2020-10-13 10:22:01,980 INFO L226 Difference]: Without dead ends: 232 [2020-10-13 10:22:01,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:22:01,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-13 10:22:01,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 202. [2020-10-13 10:22:01,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-13 10:22:01,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 226 transitions. [2020-10-13 10:22:01,997 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 226 transitions. Word has length 44 [2020-10-13 10:22:01,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:01,997 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 226 transitions. [2020-10-13 10:22:01,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:22:01,998 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 226 transitions. [2020-10-13 10:22:01,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-13 10:22:01,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:01,999 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:01,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 10:22:01,999 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:01,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:02,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1122193205, now seen corresponding path program 1 times [2020-10-13 10:22:02,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:02,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2091842592] [2020-10-13 10:22:02,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:02,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:02,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:02,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:02,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:02,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:02,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:02,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 10:22:02,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:22:02,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-10-13 10:22:02,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:02,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:22:02,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:22:02,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:22:02,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:02,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:02,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:02,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:02,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:02,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:02,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:02,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:02,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:02,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:02,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:02,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:02,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:02,525 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:02,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2091842592] [2020-10-13 10:22:02,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:02,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:22:02,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935597888] [2020-10-13 10:22:02,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:22:02,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:02,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:22:02,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:22:02,527 INFO L87 Difference]: Start difference. First operand 202 states and 226 transitions. Second operand 9 states. [2020-10-13 10:22:02,871 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-13 10:22:03,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:03,588 INFO L93 Difference]: Finished difference Result 403 states and 452 transitions. [2020-10-13 10:22:03,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 10:22:03,590 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-10-13 10:22:03,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:03,593 INFO L225 Difference]: With dead ends: 403 [2020-10-13 10:22:03,593 INFO L226 Difference]: Without dead ends: 343 [2020-10-13 10:22:03,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:22:03,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-10-13 10:22:03,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 247. [2020-10-13 10:22:03,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-10-13 10:22:03,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 277 transitions. [2020-10-13 10:22:03,613 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 277 transitions. Word has length 45 [2020-10-13 10:22:03,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:03,614 INFO L479 AbstractCegarLoop]: Abstraction has 247 states and 277 transitions. [2020-10-13 10:22:03,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:22:03,614 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 277 transitions. [2020-10-13 10:22:03,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-13 10:22:03,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:03,615 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:03,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 10:22:03,615 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:03,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:03,616 INFO L82 PathProgramCache]: Analyzing trace with hash 944633931, now seen corresponding path program 1 times [2020-10-13 10:22:03,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:03,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [328286447] [2020-10-13 10:22:03,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:03,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:03,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:03,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:03,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:03,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:03,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:03,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 10:22:03,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:22:03,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-10-13 10:22:03,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:03,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:22:03,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:22:03,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 10:22:03,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:04,108 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 33 [2020-10-13 10:22:04,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:04,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:04,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:04,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:04,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:04,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:04,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:04,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:04,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:04,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:04,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:04,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:04,345 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:04,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [328286447] [2020-10-13 10:22:04,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:04,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:22:04,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047501451] [2020-10-13 10:22:04,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:22:04,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:04,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:22:04,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:22:04,348 INFO L87 Difference]: Start difference. First operand 247 states and 277 transitions. Second operand 11 states. [2020-10-13 10:22:04,828 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-13 10:22:05,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:05,846 INFO L93 Difference]: Finished difference Result 391 states and 436 transitions. [2020-10-13 10:22:05,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 10:22:05,847 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2020-10-13 10:22:05,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:05,849 INFO L225 Difference]: With dead ends: 391 [2020-10-13 10:22:05,849 INFO L226 Difference]: Without dead ends: 389 [2020-10-13 10:22:05,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2020-10-13 10:22:05,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-10-13 10:22:05,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 281. [2020-10-13 10:22:05,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-10-13 10:22:05,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 315 transitions. [2020-10-13 10:22:05,883 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 315 transitions. Word has length 45 [2020-10-13 10:22:05,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:05,884 INFO L479 AbstractCegarLoop]: Abstraction has 281 states and 315 transitions. [2020-10-13 10:22:05,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:22:05,884 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 315 transitions. [2020-10-13 10:22:05,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 10:22:05,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:05,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:05,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 10:22:05,885 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:05,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:05,886 INFO L82 PathProgramCache]: Analyzing trace with hash 49320255, now seen corresponding path program 1 times [2020-10-13 10:22:05,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:05,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763682321] [2020-10-13 10:22:05,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:05,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:05,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:05,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:05,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:05,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:06,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:06,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:06,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:06,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:06,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 10:22:06,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 10:22:06,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 949 [2020-10-13 10:22:06,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:06,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:22:06,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 10:22:06,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 10:22:06,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:06,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:06,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:06,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:06,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:06,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:06,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:06,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:22:06,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:06,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:06,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:06,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:06,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:22:06,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:06,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763682321] [2020-10-13 10:22:06,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:06,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:22:06,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177173762] [2020-10-13 10:22:06,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:22:06,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:06,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:22:06,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:22:06,966 INFO L87 Difference]: Start difference. First operand 281 states and 315 transitions. Second operand 9 states. [2020-10-13 10:22:07,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:07,501 INFO L93 Difference]: Finished difference Result 296 states and 327 transitions. [2020-10-13 10:22:07,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 10:22:07,502 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 47 [2020-10-13 10:22:07,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:07,504 INFO L225 Difference]: With dead ends: 296 [2020-10-13 10:22:07,504 INFO L226 Difference]: Without dead ends: 265 [2020-10-13 10:22:07,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:22:07,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-10-13 10:22:07,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 250. [2020-10-13 10:22:07,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-13 10:22:07,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 280 transitions. [2020-10-13 10:22:07,526 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 280 transitions. Word has length 47 [2020-10-13 10:22:07,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:07,526 INFO L479 AbstractCegarLoop]: Abstraction has 250 states and 280 transitions. [2020-10-13 10:22:07,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:22:07,526 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 280 transitions. [2020-10-13 10:22:07,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 10:22:07,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:07,527 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:07,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 10:22:07,527 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:07,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:07,528 INFO L82 PathProgramCache]: Analyzing trace with hash 967827270, now seen corresponding path program 1 times [2020-10-13 10:22:07,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:07,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281060464] [2020-10-13 10:22:07,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:07,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:07,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:07,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:07,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:08,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:08,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 10:22:08,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:22:08,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 579 [2020-10-13 10:22:08,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:08,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:22:08,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:22:08,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 10:22:08,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:08,323 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 33 [2020-10-13 10:22:08,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:08,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:08,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:08,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:08,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:08,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:08,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:08,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:08,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:08,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:08,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:08,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:08,585 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:08,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281060464] [2020-10-13 10:22:08,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:08,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:22:08,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037303723] [2020-10-13 10:22:08,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:22:08,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:08,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:22:08,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:22:08,587 INFO L87 Difference]: Start difference. First operand 250 states and 280 transitions. Second operand 11 states. [2020-10-13 10:22:09,022 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-10-13 10:22:09,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:09,906 INFO L93 Difference]: Finished difference Result 335 states and 374 transitions. [2020-10-13 10:22:09,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 10:22:09,906 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 48 [2020-10-13 10:22:09,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:09,908 INFO L225 Difference]: With dead ends: 335 [2020-10-13 10:22:09,908 INFO L226 Difference]: Without dead ends: 333 [2020-10-13 10:22:09,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2020-10-13 10:22:09,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-10-13 10:22:09,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 256. [2020-10-13 10:22:09,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-13 10:22:09,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 286 transitions. [2020-10-13 10:22:09,936 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 286 transitions. Word has length 48 [2020-10-13 10:22:09,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:09,936 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 286 transitions. [2020-10-13 10:22:09,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:22:09,937 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 286 transitions. [2020-10-13 10:22:09,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-13 10:22:09,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:09,938 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:09,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 10:22:09,938 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:09,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:09,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1636282852, now seen corresponding path program 2 times [2020-10-13 10:22:09,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:09,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905635246] [2020-10-13 10:22:09,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:09,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:09,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:09,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:10,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:10,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:10,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 10:22:10,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:22:10,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-13 10:22:10,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:10,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:22:10,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:22:10,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 10:22:10,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:10,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:10,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:10,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:10,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:10,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:10,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:10,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:10,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:10,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:10,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:10,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:22:10,498 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:10,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905635246] [2020-10-13 10:22:10,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:10,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 10:22:10,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775278327] [2020-10-13 10:22:10,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 10:22:10,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:10,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 10:22:10,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:22:10,500 INFO L87 Difference]: Start difference. First operand 256 states and 286 transitions. Second operand 10 states. [2020-10-13 10:22:11,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:11,233 INFO L93 Difference]: Finished difference Result 362 states and 403 transitions. [2020-10-13 10:22:11,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 10:22:11,234 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2020-10-13 10:22:11,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:11,236 INFO L225 Difference]: With dead ends: 362 [2020-10-13 10:22:11,236 INFO L226 Difference]: Without dead ends: 299 [2020-10-13 10:22:11,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:22:11,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-10-13 10:22:11,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 270. [2020-10-13 10:22:11,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-13 10:22:11,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 300 transitions. [2020-10-13 10:22:11,264 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 300 transitions. Word has length 50 [2020-10-13 10:22:11,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:11,264 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 300 transitions. [2020-10-13 10:22:11,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 10:22:11,265 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 300 transitions. [2020-10-13 10:22:11,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 10:22:11,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:11,266 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:11,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 10:22:11,266 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:11,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:11,266 INFO L82 PathProgramCache]: Analyzing trace with hash 897146061, now seen corresponding path program 1 times [2020-10-13 10:22:11,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:11,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951276332] [2020-10-13 10:22:11,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:11,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:11,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:11,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:11,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:11,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:11,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:12,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:12,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 10:22:12,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 10:22:12,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 790 [2020-10-13 10:22:12,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:12,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:22:12,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 10:22:12,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 10:22:12,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:12,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:12,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:12,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:12,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:12,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:12,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:12,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:12,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:12,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:12,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:12,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:12,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:12,196 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-13 10:22:12,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951276332] [2020-10-13 10:22:12,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:12,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:22:12,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327610325] [2020-10-13 10:22:12,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:22:12,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:12,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:22:12,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:22:12,198 INFO L87 Difference]: Start difference. First operand 270 states and 300 transitions. Second operand 9 states. [2020-10-13 10:22:12,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:12,804 INFO L93 Difference]: Finished difference Result 403 states and 445 transitions. [2020-10-13 10:22:12,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 10:22:12,805 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-10-13 10:22:12,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:12,807 INFO L225 Difference]: With dead ends: 403 [2020-10-13 10:22:12,807 INFO L226 Difference]: Without dead ends: 387 [2020-10-13 10:22:12,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:22:12,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2020-10-13 10:22:12,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 328. [2020-10-13 10:22:12,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-10-13 10:22:12,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 369 transitions. [2020-10-13 10:22:12,840 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 369 transitions. Word has length 53 [2020-10-13 10:22:12,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:12,840 INFO L479 AbstractCegarLoop]: Abstraction has 328 states and 369 transitions. [2020-10-13 10:22:12,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:22:12,840 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 369 transitions. [2020-10-13 10:22:12,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 10:22:12,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:12,841 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:12,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 10:22:12,842 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:12,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:12,842 INFO L82 PathProgramCache]: Analyzing trace with hash -391245138, now seen corresponding path program 2 times [2020-10-13 10:22:12,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:12,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720875176] [2020-10-13 10:22:12,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:12,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:12,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:12,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:13,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:13,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:13,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 10:22:13,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:22:13,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 766 [2020-10-13 10:22:13,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:13,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:22:13,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 10:22:13,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 10:22:13,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:14,030 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 41 [2020-10-13 10:22:14,351 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 46 [2020-10-13 10:22:14,944 WARN L193 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 65 [2020-10-13 10:22:15,497 WARN L193 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 69 [2020-10-13 10:22:15,737 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 34 [2020-10-13 10:22:15,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:15,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:15,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:15,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:15,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:15,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:15,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:15,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:15,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:15,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:15,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:15,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:16,016 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:16,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720875176] [2020-10-13 10:22:16,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:16,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:22:16,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383175602] [2020-10-13 10:22:16,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:22:16,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:16,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:22:16,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:22:16,018 INFO L87 Difference]: Start difference. First operand 328 states and 369 transitions. Second operand 13 states. [2020-10-13 10:22:16,510 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 85 [2020-10-13 10:22:16,905 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 104 [2020-10-13 10:22:17,294 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 98 [2020-10-13 10:22:17,535 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2020-10-13 10:22:17,799 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-10-13 10:22:18,105 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2020-10-13 10:22:18,368 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2020-10-13 10:22:18,596 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-10-13 10:22:19,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:19,189 INFO L93 Difference]: Finished difference Result 621 states and 706 transitions. [2020-10-13 10:22:19,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-13 10:22:19,190 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2020-10-13 10:22:19,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:19,193 INFO L225 Difference]: With dead ends: 621 [2020-10-13 10:22:19,193 INFO L226 Difference]: Without dead ends: 619 [2020-10-13 10:22:19,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=181, Invalid=689, Unknown=0, NotChecked=0, Total=870 [2020-10-13 10:22:19,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2020-10-13 10:22:19,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 355. [2020-10-13 10:22:19,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2020-10-13 10:22:19,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 400 transitions. [2020-10-13 10:22:19,234 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 400 transitions. Word has length 55 [2020-10-13 10:22:19,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:19,234 INFO L479 AbstractCegarLoop]: Abstraction has 355 states and 400 transitions. [2020-10-13 10:22:19,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:22:19,235 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 400 transitions. [2020-10-13 10:22:19,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 10:22:19,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:19,236 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:19,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 10:22:19,236 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:19,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:19,237 INFO L82 PathProgramCache]: Analyzing trace with hash 327610008, now seen corresponding path program 2 times [2020-10-13 10:22:19,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:19,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726077459] [2020-10-13 10:22:19,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:19,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:19,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:19,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:19,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:19,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:19,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:20,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:20,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 10:22:20,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 10:22:20,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 905 [2020-10-13 10:22:20,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:20,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:22:20,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 10:22:20,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 10:22:20,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:20,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:20,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:20,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:20,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:20,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:20,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:20,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:22:20,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:20,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:20,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:20,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:20,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:20,246 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-13 10:22:20,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726077459] [2020-10-13 10:22:20,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:20,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:22:20,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371271737] [2020-10-13 10:22:20,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:22:20,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:20,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:22:20,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:22:20,248 INFO L87 Difference]: Start difference. First operand 355 states and 400 transitions. Second operand 9 states. [2020-10-13 10:22:20,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:20,676 INFO L93 Difference]: Finished difference Result 527 states and 591 transitions. [2020-10-13 10:22:20,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 10:22:20,681 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-10-13 10:22:20,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:20,684 INFO L225 Difference]: With dead ends: 527 [2020-10-13 10:22:20,684 INFO L226 Difference]: Without dead ends: 452 [2020-10-13 10:22:20,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:22:20,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2020-10-13 10:22:20,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 377. [2020-10-13 10:22:20,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2020-10-13 10:22:20,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 425 transitions. [2020-10-13 10:22:20,720 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 425 transitions. Word has length 56 [2020-10-13 10:22:20,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:20,720 INFO L479 AbstractCegarLoop]: Abstraction has 377 states and 425 transitions. [2020-10-13 10:22:20,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:22:20,720 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 425 transitions. [2020-10-13 10:22:20,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 10:22:20,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:20,721 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:20,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 10:22:20,722 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:20,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:20,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1677756292, now seen corresponding path program 3 times [2020-10-13 10:22:20,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:20,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209067091] [2020-10-13 10:22:20,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:20,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:20,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:20,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:20,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:21,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:21,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:21,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 10:22:21,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:22:21,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 414 [2020-10-13 10:22:21,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:21,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:22:21,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:22:21,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 10:22:21,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:21,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:21,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:21,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:21,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:21,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:21,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:21,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:21,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:21,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:21,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:21,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:21,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:21,617 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:21,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209067091] [2020-10-13 10:22:21,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:21,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:22:21,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414569529] [2020-10-13 10:22:21,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:22:21,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:21,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:22:21,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:22:21,619 INFO L87 Difference]: Start difference. First operand 377 states and 425 transitions. Second operand 11 states. [2020-10-13 10:22:22,067 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 50 [2020-10-13 10:22:22,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:22,989 INFO L93 Difference]: Finished difference Result 674 states and 763 transitions. [2020-10-13 10:22:22,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 10:22:22,990 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-10-13 10:22:22,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:22,993 INFO L225 Difference]: With dead ends: 674 [2020-10-13 10:22:22,993 INFO L226 Difference]: Without dead ends: 558 [2020-10-13 10:22:22,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2020-10-13 10:22:22,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2020-10-13 10:22:23,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 457. [2020-10-13 10:22:23,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 457 states. [2020-10-13 10:22:23,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 517 transitions. [2020-10-13 10:22:23,040 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 517 transitions. Word has length 57 [2020-10-13 10:22:23,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:23,040 INFO L479 AbstractCegarLoop]: Abstraction has 457 states and 517 transitions. [2020-10-13 10:22:23,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:22:23,041 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 517 transitions. [2020-10-13 10:22:23,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 10:22:23,042 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:23,042 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:23,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 10:22:23,042 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:23,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:23,043 INFO L82 PathProgramCache]: Analyzing trace with hash -550383868, now seen corresponding path program 1 times [2020-10-13 10:22:23,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:23,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1508648186] [2020-10-13 10:22:23,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:23,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:23,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:23,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:23,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:23,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:23,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:23,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:23,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:23,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 10:22:23,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 10:22:23,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 819 [2020-10-13 10:22:23,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:23,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:22:23,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:22:23,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 10:22:23,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:24,165 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 35 [2020-10-13 10:22:24,275 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2020-10-13 10:22:24,446 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 49 [2020-10-13 10:22:24,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:24,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:24,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:24,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:24,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:24,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:24,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:24,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:24,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:24,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:24,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:24,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:24,756 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:24,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1508648186] [2020-10-13 10:22:24,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:24,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:22:24,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177031601] [2020-10-13 10:22:24,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:22:24,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:24,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:22:24,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:22:24,757 INFO L87 Difference]: Start difference. First operand 457 states and 517 transitions. Second operand 13 states. [2020-10-13 10:22:25,297 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 70 [2020-10-13 10:22:25,813 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2020-10-13 10:22:26,029 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-13 10:22:27,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:27,176 INFO L93 Difference]: Finished difference Result 726 states and 819 transitions. [2020-10-13 10:22:27,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 10:22:27,176 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 57 [2020-10-13 10:22:27,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:27,181 INFO L225 Difference]: With dead ends: 726 [2020-10-13 10:22:27,181 INFO L226 Difference]: Without dead ends: 724 [2020-10-13 10:22:27,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=114, Invalid=588, Unknown=0, NotChecked=0, Total=702 [2020-10-13 10:22:27,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2020-10-13 10:22:27,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 516. [2020-10-13 10:22:27,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 516 states. [2020-10-13 10:22:27,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 582 transitions. [2020-10-13 10:22:27,234 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 582 transitions. Word has length 57 [2020-10-13 10:22:27,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:27,234 INFO L479 AbstractCegarLoop]: Abstraction has 516 states and 582 transitions. [2020-10-13 10:22:27,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:22:27,234 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 582 transitions. [2020-10-13 10:22:27,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 10:22:27,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:27,235 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:27,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 10:22:27,236 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:27,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:27,236 INFO L82 PathProgramCache]: Analyzing trace with hash 906137348, now seen corresponding path program 2 times [2020-10-13 10:22:27,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:27,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1658512464] [2020-10-13 10:22:27,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:27,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:27,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:27,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:27,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:27,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:28,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:28,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 10:22:28,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:22:28,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-10-13 10:22:28,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:28,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:22:28,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:22:28,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 10:22:28,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:28,588 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 28 [2020-10-13 10:22:29,161 WARN L193 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 67 [2020-10-13 10:22:29,422 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 41 [2020-10-13 10:22:29,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:29,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:29,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:29,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:29,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:29,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:29,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:29,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:29,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:29,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:29,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:29,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:29,903 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:29,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1658512464] [2020-10-13 10:22:29,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:29,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:22:29,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086339797] [2020-10-13 10:22:29,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:22:29,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:29,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:22:29,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:22:29,905 INFO L87 Difference]: Start difference. First operand 516 states and 582 transitions. Second operand 13 states. [2020-10-13 10:22:30,255 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 52 [2020-10-13 10:22:30,516 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 82 [2020-10-13 10:22:30,911 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 88 [2020-10-13 10:22:31,350 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 71 [2020-10-13 10:22:31,977 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 64 [2020-10-13 10:22:32,148 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2020-10-13 10:22:32,481 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 64 [2020-10-13 10:22:32,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:32,907 INFO L93 Difference]: Finished difference Result 795 states and 898 transitions. [2020-10-13 10:22:32,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 10:22:32,908 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 57 [2020-10-13 10:22:32,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:32,911 INFO L225 Difference]: With dead ends: 795 [2020-10-13 10:22:32,911 INFO L226 Difference]: Without dead ends: 793 [2020-10-13 10:22:32,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=135, Invalid=677, Unknown=0, NotChecked=0, Total=812 [2020-10-13 10:22:32,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2020-10-13 10:22:32,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 557. [2020-10-13 10:22:32,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 557 states. [2020-10-13 10:22:32,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 632 transitions. [2020-10-13 10:22:32,971 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 632 transitions. Word has length 57 [2020-10-13 10:22:32,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:32,971 INFO L479 AbstractCegarLoop]: Abstraction has 557 states and 632 transitions. [2020-10-13 10:22:32,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:22:32,971 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 632 transitions. [2020-10-13 10:22:32,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 10:22:32,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:32,972 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:32,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 10:22:32,973 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:32,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:32,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1322002812, now seen corresponding path program 2 times [2020-10-13 10:22:32,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:32,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874780788] [2020-10-13 10:22:32,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:32,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:32,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:33,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:33,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:33,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:33,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:33,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 10:22:33,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:22:33,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 943 [2020-10-13 10:22:33,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:33,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:22:33,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:22:33,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 10:22:33,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:34,288 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 28 [2020-10-13 10:22:34,586 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 52 [2020-10-13 10:22:35,319 WARN L193 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 87 [2020-10-13 10:22:35,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:35,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:35,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:35,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:35,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:35,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:35,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:35,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:35,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:35,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:35,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:35,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:35,836 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:35,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874780788] [2020-10-13 10:22:35,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:35,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:22:35,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759818060] [2020-10-13 10:22:35,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:22:35,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:35,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:22:35,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:22:35,838 INFO L87 Difference]: Start difference. First operand 557 states and 632 transitions. Second operand 13 states. [2020-10-13 10:22:36,312 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 81 [2020-10-13 10:22:36,697 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-13 10:22:37,493 WARN L193 SmtUtils]: Spent 638.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 103 [2020-10-13 10:22:38,092 WARN L193 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 85 [2020-10-13 10:22:39,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:39,221 INFO L93 Difference]: Finished difference Result 826 states and 934 transitions. [2020-10-13 10:22:39,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 10:22:39,222 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 57 [2020-10-13 10:22:39,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:39,225 INFO L225 Difference]: With dead ends: 826 [2020-10-13 10:22:39,225 INFO L226 Difference]: Without dead ends: 824 [2020-10-13 10:22:39,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=116, Invalid=640, Unknown=0, NotChecked=0, Total=756 [2020-10-13 10:22:39,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2020-10-13 10:22:39,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 544. [2020-10-13 10:22:39,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-10-13 10:22:39,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 618 transitions. [2020-10-13 10:22:39,283 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 618 transitions. Word has length 57 [2020-10-13 10:22:39,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:39,283 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 618 transitions. [2020-10-13 10:22:39,283 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:22:39,283 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 618 transitions. [2020-10-13 10:22:39,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 10:22:39,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:39,285 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:39,285 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 10:22:39,285 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:39,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:39,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1703436781, now seen corresponding path program 1 times [2020-10-13 10:22:39,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:39,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715287204] [2020-10-13 10:22:39,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:39,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:39,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:39,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:39,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:39,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:39,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:39,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:40,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:40,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 10:22:40,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 10:22:40,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 955 [2020-10-13 10:22:40,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:40,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:22:40,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:22:40,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 10:22:40,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:40,488 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 35 [2020-10-13 10:22:40,643 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 37 [2020-10-13 10:22:40,870 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 49 [2020-10-13 10:22:41,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:41,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:41,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:41,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:41,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:41,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:41,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:41,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:41,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:41,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:41,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:41,103 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:41,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715287204] [2020-10-13 10:22:41,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:41,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:22:41,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948075655] [2020-10-13 10:22:41,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:22:41,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:41,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:22:41,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:22:41,105 INFO L87 Difference]: Start difference. First operand 544 states and 618 transitions. Second operand 13 states. [2020-10-13 10:22:41,612 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2020-10-13 10:22:42,112 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2020-10-13 10:22:42,327 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-13 10:22:43,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:43,358 INFO L93 Difference]: Finished difference Result 779 states and 881 transitions. [2020-10-13 10:22:43,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 10:22:43,359 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-10-13 10:22:43,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:43,362 INFO L225 Difference]: With dead ends: 779 [2020-10-13 10:22:43,363 INFO L226 Difference]: Without dead ends: 777 [2020-10-13 10:22:43,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=124, Invalid=632, Unknown=0, NotChecked=0, Total=756 [2020-10-13 10:22:43,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2020-10-13 10:22:43,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 603. [2020-10-13 10:22:43,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-10-13 10:22:43,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 682 transitions. [2020-10-13 10:22:43,424 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 682 transitions. Word has length 60 [2020-10-13 10:22:43,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:43,425 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 682 transitions. [2020-10-13 10:22:43,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:22:43,425 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 682 transitions. [2020-10-13 10:22:43,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 10:22:43,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:43,426 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:43,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 10:22:43,427 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:43,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:43,427 INFO L82 PathProgramCache]: Analyzing trace with hash 872391149, now seen corresponding path program 2 times [2020-10-13 10:22:43,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:43,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82050070] [2020-10-13 10:22:43,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:43,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:43,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:43,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:43,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:44,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:44,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:44,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 10:22:44,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:22:44,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1215 [2020-10-13 10:22:44,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:44,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:22:44,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:22:44,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 10:22:44,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:44,983 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 32 [2020-10-13 10:22:45,226 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 60 [2020-10-13 10:22:45,391 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 40 [2020-10-13 10:22:45,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:45,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:45,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:45,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:45,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:45,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:45,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:22:45,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:45,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:45,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:45,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:45,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:45,807 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:45,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82050070] [2020-10-13 10:22:45,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:45,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:22:45,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364081504] [2020-10-13 10:22:45,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:22:45,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:45,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:22:45,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:22:45,809 INFO L87 Difference]: Start difference. First operand 603 states and 682 transitions. Second operand 13 states. [2020-10-13 10:22:46,412 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 79 [2020-10-13 10:22:46,728 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 81 [2020-10-13 10:22:47,230 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 68 [2020-10-13 10:22:47,417 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2020-10-13 10:22:47,582 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 58 [2020-10-13 10:22:47,827 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 62 [2020-10-13 10:22:48,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:48,423 INFO L93 Difference]: Finished difference Result 793 states and 897 transitions. [2020-10-13 10:22:48,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 10:22:48,424 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-10-13 10:22:48,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:48,426 INFO L225 Difference]: With dead ends: 793 [2020-10-13 10:22:48,427 INFO L226 Difference]: Without dead ends: 791 [2020-10-13 10:22:48,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=133, Invalid=623, Unknown=0, NotChecked=0, Total=756 [2020-10-13 10:22:48,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2020-10-13 10:22:48,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 584. [2020-10-13 10:22:48,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 584 states. [2020-10-13 10:22:48,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 662 transitions. [2020-10-13 10:22:48,490 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 662 transitions. Word has length 60 [2020-10-13 10:22:48,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:48,490 INFO L479 AbstractCegarLoop]: Abstraction has 584 states and 662 transitions. [2020-10-13 10:22:48,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:22:48,490 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 662 transitions. [2020-10-13 10:22:48,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 10:22:48,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:48,492 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:48,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 10:22:48,492 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:48,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:48,493 INFO L82 PathProgramCache]: Analyzing trace with hash 909820675, now seen corresponding path program 4 times [2020-10-13 10:22:48,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:48,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811609374] [2020-10-13 10:22:48,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:48,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:48,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:48,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:48,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:48,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:49,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:49,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:49,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:49,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 10:22:49,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 10:22:49,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1077 [2020-10-13 10:22:49,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:49,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:22:49,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:22:49,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 10:22:49,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:49,835 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2020-10-13 10:22:49,955 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2020-10-13 10:22:50,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:50,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:50,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:50,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:50,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:50,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:50,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:50,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:50,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:50,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:50,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:50,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:50,351 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:50,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811609374] [2020-10-13 10:22:50,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:50,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:22:50,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933272495] [2020-10-13 10:22:50,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:22:50,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:50,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:22:50,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:22:50,352 INFO L87 Difference]: Start difference. First operand 584 states and 662 transitions. Second operand 13 states. [2020-10-13 10:22:51,059 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 75 [2020-10-13 10:22:51,344 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 73 [2020-10-13 10:22:51,600 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2020-10-13 10:22:52,014 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2020-10-13 10:22:52,146 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-10-13 10:22:53,047 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2020-10-13 10:22:53,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:53,257 INFO L93 Difference]: Finished difference Result 758 states and 856 transitions. [2020-10-13 10:22:53,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 10:22:53,258 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 62 [2020-10-13 10:22:53,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:53,260 INFO L225 Difference]: With dead ends: 758 [2020-10-13 10:22:53,260 INFO L226 Difference]: Without dead ends: 690 [2020-10-13 10:22:53,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=159, Invalid=771, Unknown=0, NotChecked=0, Total=930 [2020-10-13 10:22:53,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2020-10-13 10:22:53,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 616. [2020-10-13 10:22:53,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 616 states. [2020-10-13 10:22:53,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 696 transitions. [2020-10-13 10:22:53,333 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 696 transitions. Word has length 62 [2020-10-13 10:22:53,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:53,334 INFO L479 AbstractCegarLoop]: Abstraction has 616 states and 696 transitions. [2020-10-13 10:22:53,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:22:53,334 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 696 transitions. [2020-10-13 10:22:53,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 10:22:53,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:53,336 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:53,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 10:22:53,336 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:53,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:53,337 INFO L82 PathProgramCache]: Analyzing trace with hash 338307971, now seen corresponding path program 3 times [2020-10-13 10:22:53,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:53,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178527006] [2020-10-13 10:22:53,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:53,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:53,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:53,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:53,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:54,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:54,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 10:22:54,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:22:54,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 858 [2020-10-13 10:22:54,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:54,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:22:54,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:22:54,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 10:22:54,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:54,549 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 41 [2020-10-13 10:22:54,718 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 40 [2020-10-13 10:22:54,915 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 53 [2020-10-13 10:22:55,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:55,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:55,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:55,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:55,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:55,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:55,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:55,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:55,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:55,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:55,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:55,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:55,404 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:55,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178527006] [2020-10-13 10:22:55,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:55,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 10:22:55,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376815345] [2020-10-13 10:22:55,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 10:22:55,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:55,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 10:22:55,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:22:55,405 INFO L87 Difference]: Start difference. First operand 616 states and 696 transitions. Second operand 14 states. [2020-10-13 10:22:55,726 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 74 [2020-10-13 10:22:56,060 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 84 [2020-10-13 10:22:56,484 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 76 [2020-10-13 10:22:57,595 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 80 [2020-10-13 10:22:58,102 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-10-13 10:22:58,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:58,401 INFO L93 Difference]: Finished difference Result 940 states and 1060 transitions. [2020-10-13 10:22:58,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-13 10:22:58,401 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 62 [2020-10-13 10:22:58,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:58,405 INFO L225 Difference]: With dead ends: 940 [2020-10-13 10:22:58,405 INFO L226 Difference]: Without dead ends: 938 [2020-10-13 10:22:58,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=140, Invalid=852, Unknown=0, NotChecked=0, Total=992 [2020-10-13 10:22:58,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2020-10-13 10:22:58,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 721. [2020-10-13 10:22:58,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 721 states. [2020-10-13 10:22:58,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 812 transitions. [2020-10-13 10:22:58,469 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 812 transitions. Word has length 62 [2020-10-13 10:22:58,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:58,469 INFO L479 AbstractCegarLoop]: Abstraction has 721 states and 812 transitions. [2020-10-13 10:22:58,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 10:22:58,469 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 812 transitions. [2020-10-13 10:22:58,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 10:22:58,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:58,471 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:58,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 10:22:58,472 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:22:58,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:58,472 INFO L82 PathProgramCache]: Analyzing trace with hash 567372675, now seen corresponding path program 4 times [2020-10-13 10:22:58,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:58,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167856443] [2020-10-13 10:22:58,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:58,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:58,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:58,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:58,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:58,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:59,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:59,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:59,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:59,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:59,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:00,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:00,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 10:23:00,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-13 10:23:00,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1775 [2020-10-13 10:23:00,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:00,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:23:00,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:23:00,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 10:23:00,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:00,453 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 28 [2020-10-13 10:23:00,662 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 50 [2020-10-13 10:23:00,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:00,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:00,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:00,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:00,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:00,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:00,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:00,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:00,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:00,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:00,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:00,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:00,992 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:00,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167856443] [2020-10-13 10:23:00,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:00,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:23:00,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744959783] [2020-10-13 10:23:00,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:23:00,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:00,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:23:00,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:23:00,994 INFO L87 Difference]: Start difference. First operand 721 states and 812 transitions. Second operand 13 states. [2020-10-13 10:23:02,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:02,191 INFO L93 Difference]: Finished difference Result 880 states and 988 transitions. [2020-10-13 10:23:02,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 10:23:02,191 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 62 [2020-10-13 10:23:02,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:02,194 INFO L225 Difference]: With dead ends: 880 [2020-10-13 10:23:02,194 INFO L226 Difference]: Without dead ends: 804 [2020-10-13 10:23:02,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:23:02,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2020-10-13 10:23:02,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 721. [2020-10-13 10:23:02,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 721 states. [2020-10-13 10:23:02,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 810 transitions. [2020-10-13 10:23:02,260 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 810 transitions. Word has length 62 [2020-10-13 10:23:02,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:02,260 INFO L479 AbstractCegarLoop]: Abstraction has 721 states and 810 transitions. [2020-10-13 10:23:02,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:23:02,260 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 810 transitions. [2020-10-13 10:23:02,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 10:23:02,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:02,262 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:02,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 10:23:02,262 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:02,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:02,263 INFO L82 PathProgramCache]: Analyzing trace with hash 679696195, now seen corresponding path program 1 times [2020-10-13 10:23:02,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:02,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958809208] [2020-10-13 10:23:02,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:02,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:02,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:02,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:02,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:02,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:02,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:02,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:03,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:03,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:05,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:05,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 10:23:05,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-13 10:23:05,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3604 [2020-10-13 10:23:05,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:05,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:23:05,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 10:23:05,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-13 10:23:05,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:06,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:06,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:06,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:06,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:06,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:06,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:06,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:06,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:06,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:06,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:06,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:06,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:06,034 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-13 10:23:06,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958809208] [2020-10-13 10:23:06,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:06,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:23:06,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903752659] [2020-10-13 10:23:06,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:23:06,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:06,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:23:06,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:23:06,035 INFO L87 Difference]: Start difference. First operand 721 states and 810 transitions. Second operand 11 states. [2020-10-13 10:23:06,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:06,783 INFO L93 Difference]: Finished difference Result 765 states and 852 transitions. [2020-10-13 10:23:06,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 10:23:06,784 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 64 [2020-10-13 10:23:06,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:06,787 INFO L225 Difference]: With dead ends: 765 [2020-10-13 10:23:06,788 INFO L226 Difference]: Without dead ends: 763 [2020-10-13 10:23:06,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:23:06,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2020-10-13 10:23:06,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 732. [2020-10-13 10:23:06,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 732 states. [2020-10-13 10:23:06,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 821 transitions. [2020-10-13 10:23:06,855 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 821 transitions. Word has length 64 [2020-10-13 10:23:06,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:06,856 INFO L479 AbstractCegarLoop]: Abstraction has 732 states and 821 transitions. [2020-10-13 10:23:06,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:23:06,856 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 821 transitions. [2020-10-13 10:23:06,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 10:23:06,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:06,858 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:06,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 10:23:06,858 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:06,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:06,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1751367410, now seen corresponding path program 3 times [2020-10-13 10:23:06,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:06,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139365053] [2020-10-13 10:23:06,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:06,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:06,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:07,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:07,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:07,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:07,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 10:23:07,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:23:07,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 580 [2020-10-13 10:23:07,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:07,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:23:07,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:23:07,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 10:23:07,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:07,745 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 35 [2020-10-13 10:23:07,929 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 34 [2020-10-13 10:23:08,413 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 74 [2020-10-13 10:23:08,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:08,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:08,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:08,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:08,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:08,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:08,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:08,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:08,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:08,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:08,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:08,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:08,869 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:08,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139365053] [2020-10-13 10:23:08,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:08,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 10:23:08,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026136418] [2020-10-13 10:23:08,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 10:23:08,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:08,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 10:23:08,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:23:08,870 INFO L87 Difference]: Start difference. First operand 732 states and 821 transitions. Second operand 14 states. [2020-10-13 10:23:09,136 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 65 [2020-10-13 10:23:09,552 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 102 [2020-10-13 10:23:10,880 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 74 [2020-10-13 10:23:11,360 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2020-10-13 10:23:11,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:11,655 INFO L93 Difference]: Finished difference Result 953 states and 1069 transitions. [2020-10-13 10:23:11,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-13 10:23:11,655 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 65 [2020-10-13 10:23:11,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:11,658 INFO L225 Difference]: With dead ends: 953 [2020-10-13 10:23:11,659 INFO L226 Difference]: Without dead ends: 951 [2020-10-13 10:23:11,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=134, Invalid=796, Unknown=0, NotChecked=0, Total=930 [2020-10-13 10:23:11,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2020-10-13 10:23:11,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 744. [2020-10-13 10:23:11,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2020-10-13 10:23:11,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 833 transitions. [2020-10-13 10:23:11,716 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 833 transitions. Word has length 65 [2020-10-13 10:23:11,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:11,716 INFO L479 AbstractCegarLoop]: Abstraction has 744 states and 833 transitions. [2020-10-13 10:23:11,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 10:23:11,716 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 833 transitions. [2020-10-13 10:23:11,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 10:23:11,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:11,718 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:11,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 10:23:11,718 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:11,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:11,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1055186660, now seen corresponding path program 5 times [2020-10-13 10:23:11,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:11,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [261613509] [2020-10-13 10:23:11,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:11,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:11,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:11,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:11,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:12,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:12,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 10:23:12,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:23:12,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 598 [2020-10-13 10:23:12,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:12,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:23:12,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:23:12,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 10:23:12,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:12,509 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 36 [2020-10-13 10:23:12,660 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 34 [2020-10-13 10:23:13,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:13,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:13,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:13,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:13,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:13,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:13,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:13,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:13,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:13,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:13,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:13,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:13,078 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 13 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:13,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [261613509] [2020-10-13 10:23:13,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:13,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 10:23:13,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776392906] [2020-10-13 10:23:13,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 10:23:13,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:13,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 10:23:13,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:23:13,080 INFO L87 Difference]: Start difference. First operand 744 states and 833 transitions. Second operand 14 states. [2020-10-13 10:23:13,221 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2020-10-13 10:23:13,762 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2020-10-13 10:23:14,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:14,683 INFO L93 Difference]: Finished difference Result 939 states and 1052 transitions. [2020-10-13 10:23:14,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 10:23:14,686 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 67 [2020-10-13 10:23:14,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:14,689 INFO L225 Difference]: With dead ends: 939 [2020-10-13 10:23:14,689 INFO L226 Difference]: Without dead ends: 819 [2020-10-13 10:23:14,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=129, Invalid=521, Unknown=0, NotChecked=0, Total=650 [2020-10-13 10:23:14,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2020-10-13 10:23:14,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 772. [2020-10-13 10:23:14,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 772 states. [2020-10-13 10:23:14,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 861 transitions. [2020-10-13 10:23:14,752 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 861 transitions. Word has length 67 [2020-10-13 10:23:14,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:14,752 INFO L479 AbstractCegarLoop]: Abstraction has 772 states and 861 transitions. [2020-10-13 10:23:14,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 10:23:14,752 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 861 transitions. [2020-10-13 10:23:14,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 10:23:14,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:14,753 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:14,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 10:23:14,753 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:14,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:14,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1937253784, now seen corresponding path program 1 times [2020-10-13 10:23:14,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:14,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541963706] [2020-10-13 10:23:14,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:14,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:14,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:14,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:14,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:14,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:15,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:15,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:15,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:16,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:16,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 10:23:16,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 10:23:16,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1771 [2020-10-13 10:23:16,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:16,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:23:16,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 10:23:16,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 10:23:16,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:16,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:16,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:16,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:16,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:16,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:16,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:16,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:16,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:16,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:16,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:16,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:16,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:16,681 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-13 10:23:16,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [541963706] [2020-10-13 10:23:16,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:16,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:23:16,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462012666] [2020-10-13 10:23:16,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:23:16,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:16,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:23:16,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:23:16,682 INFO L87 Difference]: Start difference. First operand 772 states and 861 transitions. Second operand 11 states. [2020-10-13 10:23:17,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:17,367 INFO L93 Difference]: Finished difference Result 791 states and 875 transitions. [2020-10-13 10:23:17,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 10:23:17,368 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-10-13 10:23:17,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:17,370 INFO L225 Difference]: With dead ends: 791 [2020-10-13 10:23:17,370 INFO L226 Difference]: Without dead ends: 705 [2020-10-13 10:23:17,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:23:17,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2020-10-13 10:23:17,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 691. [2020-10-13 10:23:17,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-13 10:23:17,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 772 transitions. [2020-10-13 10:23:17,429 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 772 transitions. Word has length 67 [2020-10-13 10:23:17,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:17,429 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 772 transitions. [2020-10-13 10:23:17,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:23:17,429 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 772 transitions. [2020-10-13 10:23:17,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 10:23:17,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:17,431 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:17,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-13 10:23:17,431 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:17,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:17,431 INFO L82 PathProgramCache]: Analyzing trace with hash -2133141977, now seen corresponding path program 3 times [2020-10-13 10:23:17,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:17,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693691368] [2020-10-13 10:23:17,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:17,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:17,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:17,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 10:23:17,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:17,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-10-13 10:23:17,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:17,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:23:17,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:17,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 10:23:17,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:18,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:18,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:18,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:18,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:18,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:18,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:18,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:18,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:18,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:18,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:18,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:18,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:18,295 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:18,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693691368] [2020-10-13 10:23:18,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:18,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:23:18,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753017767] [2020-10-13 10:23:18,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:23:18,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:18,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:23:18,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:23:18,297 INFO L87 Difference]: Start difference. First operand 691 states and 772 transitions. Second operand 13 states. [2020-10-13 10:23:19,232 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2020-10-13 10:23:19,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:19,498 INFO L93 Difference]: Finished difference Result 854 states and 947 transitions. [2020-10-13 10:23:19,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:23:19,499 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 67 [2020-10-13 10:23:19,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:19,502 INFO L225 Difference]: With dead ends: 854 [2020-10-13 10:23:19,502 INFO L226 Difference]: Without dead ends: 852 [2020-10-13 10:23:19,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:23:19,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2020-10-13 10:23:19,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 691. [2020-10-13 10:23:19,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-13 10:23:19,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 769 transitions. [2020-10-13 10:23:19,556 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 769 transitions. Word has length 67 [2020-10-13 10:23:19,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:19,557 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 769 transitions. [2020-10-13 10:23:19,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:23:19,557 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 769 transitions. [2020-10-13 10:23:19,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 10:23:19,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:19,558 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:19,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-13 10:23:19,559 INFO L427 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:19,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:19,559 INFO L82 PathProgramCache]: Analyzing trace with hash 766793789, now seen corresponding path program 5 times [2020-10-13 10:23:19,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:19,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148229582] [2020-10-13 10:23:19,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:19,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:19,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:19,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:19,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:20,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:20,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:20,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:20,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:20,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 10:23:20,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 10:23:20,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1368 [2020-10-13 10:23:20,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:20,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:23:20,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:23:20,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 10:23:20,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:21,508 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 43 [2020-10-13 10:23:21,931 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 52 [2020-10-13 10:23:22,535 WARN L193 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 62 [2020-10-13 10:23:23,220 WARN L193 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 65 [2020-10-13 10:23:23,792 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 68 [2020-10-13 10:23:23,936 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 31 [2020-10-13 10:23:24,091 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 31 [2020-10-13 10:23:24,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:24,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:24,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:24,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:24,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:24,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:24,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:24,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:24,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:24,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:24,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:24,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:24,402 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:24,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148229582] [2020-10-13 10:23:24,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:24,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:23:24,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412894697] [2020-10-13 10:23:24,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:23:24,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:24,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:23:24,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:23:24,404 INFO L87 Difference]: Start difference. First operand 691 states and 769 transitions. Second operand 15 states. [2020-10-13 10:23:24,815 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-13 10:23:25,109 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 79 [2020-10-13 10:23:25,859 WARN L193 SmtUtils]: Spent 601.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 111 [2020-10-13 10:23:26,565 WARN L193 SmtUtils]: Spent 591.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 103 [2020-10-13 10:23:27,342 WARN L193 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 112 [2020-10-13 10:23:27,681 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 48 [2020-10-13 10:23:28,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:28,690 INFO L93 Difference]: Finished difference Result 897 states and 1001 transitions. [2020-10-13 10:23:28,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 10:23:28,691 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 69 [2020-10-13 10:23:28,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:28,694 INFO L225 Difference]: With dead ends: 897 [2020-10-13 10:23:28,694 INFO L226 Difference]: Without dead ends: 895 [2020-10-13 10:23:28,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=129, Invalid=741, Unknown=0, NotChecked=0, Total=870 [2020-10-13 10:23:28,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2020-10-13 10:23:28,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 703. [2020-10-13 10:23:28,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2020-10-13 10:23:28,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 783 transitions. [2020-10-13 10:23:28,756 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 783 transitions. Word has length 69 [2020-10-13 10:23:28,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:28,757 INFO L479 AbstractCegarLoop]: Abstraction has 703 states and 783 transitions. [2020-10-13 10:23:28,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:23:28,757 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 783 transitions. [2020-10-13 10:23:28,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 10:23:28,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:28,758 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:28,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-13 10:23:28,759 INFO L427 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:28,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:28,759 INFO L82 PathProgramCache]: Analyzing trace with hash -2071652291, now seen corresponding path program 6 times [2020-10-13 10:23:28,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:28,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645762313] [2020-10-13 10:23:28,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:28,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:28,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:28,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:29,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:29,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:29,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:29,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:30,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:30,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 10:23:30,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 10:23:30,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1354 [2020-10-13 10:23:30,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:30,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:23:30,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:23:30,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 10:23:30,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:30,455 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 35 [2020-10-13 10:23:30,621 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 37 [2020-10-13 10:23:30,871 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 50 [2020-10-13 10:23:31,187 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 56 [2020-10-13 10:23:31,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:31,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:31,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:31,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:31,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:31,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:31,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:31,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:31,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:31,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:31,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:31,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:31,591 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:31,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645762313] [2020-10-13 10:23:31,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:31,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:23:31,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566164518] [2020-10-13 10:23:31,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:23:31,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:31,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:23:31,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:23:31,593 INFO L87 Difference]: Start difference. First operand 703 states and 783 transitions. Second operand 15 states. [2020-10-13 10:23:32,117 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 65 [2020-10-13 10:23:32,450 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 66 [2020-10-13 10:23:32,745 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 92 [2020-10-13 10:23:33,051 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2020-10-13 10:23:34,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:34,646 INFO L93 Difference]: Finished difference Result 1016 states and 1137 transitions. [2020-10-13 10:23:34,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-13 10:23:34,646 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 69 [2020-10-13 10:23:34,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:34,651 INFO L225 Difference]: With dead ends: 1016 [2020-10-13 10:23:34,651 INFO L226 Difference]: Without dead ends: 1014 [2020-10-13 10:23:34,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=184, Invalid=1006, Unknown=0, NotChecked=0, Total=1190 [2020-10-13 10:23:34,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2020-10-13 10:23:34,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 719. [2020-10-13 10:23:34,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 719 states. [2020-10-13 10:23:34,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 803 transitions. [2020-10-13 10:23:34,710 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 803 transitions. Word has length 69 [2020-10-13 10:23:34,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:34,710 INFO L479 AbstractCegarLoop]: Abstraction has 719 states and 803 transitions. [2020-10-13 10:23:34,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:23:34,711 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 803 transitions. [2020-10-13 10:23:34,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 10:23:34,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:34,712 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:34,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-13 10:23:34,712 INFO L427 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:34,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:34,713 INFO L82 PathProgramCache]: Analyzing trace with hash -4825155, now seen corresponding path program 7 times [2020-10-13 10:23:34,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:34,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [402451950] [2020-10-13 10:23:34,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:34,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:34,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:34,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:35,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:35,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:35,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:35,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:36,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:36,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 10:23:36,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 10:23:36,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2095 [2020-10-13 10:23:36,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:36,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:23:36,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:23:36,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 10:23:36,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:37,295 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 36 [2020-10-13 10:23:37,437 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2020-10-13 10:23:37,608 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 44 [2020-10-13 10:23:37,974 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 61 [2020-10-13 10:23:38,543 WARN L193 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 67 [2020-10-13 10:23:38,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:38,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:38,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:38,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:38,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:38,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:38,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:38,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:38,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:38,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:38,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:39,000 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:39,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [402451950] [2020-10-13 10:23:39,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:39,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:23:39,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920910620] [2020-10-13 10:23:39,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:23:39,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:39,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:23:39,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:23:39,001 INFO L87 Difference]: Start difference. First operand 719 states and 803 transitions. Second operand 15 states. [2020-10-13 10:23:39,632 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 70 [2020-10-13 10:23:40,013 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 77 [2020-10-13 10:23:40,430 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 106 [2020-10-13 10:23:40,792 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 86 [2020-10-13 10:23:41,054 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-13 10:23:41,569 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2020-10-13 10:23:41,813 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-10-13 10:23:42,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:42,681 INFO L93 Difference]: Finished difference Result 965 states and 1079 transitions. [2020-10-13 10:23:42,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-13 10:23:42,682 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 69 [2020-10-13 10:23:42,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:42,685 INFO L225 Difference]: With dead ends: 965 [2020-10-13 10:23:42,685 INFO L226 Difference]: Without dead ends: 963 [2020-10-13 10:23:42,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=141, Invalid=851, Unknown=0, NotChecked=0, Total=992 [2020-10-13 10:23:42,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2020-10-13 10:23:42,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 719. [2020-10-13 10:23:42,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 719 states. [2020-10-13 10:23:42,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 803 transitions. [2020-10-13 10:23:42,756 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 803 transitions. Word has length 69 [2020-10-13 10:23:42,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:42,756 INFO L479 AbstractCegarLoop]: Abstraction has 719 states and 803 transitions. [2020-10-13 10:23:42,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:23:42,756 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 803 transitions. [2020-10-13 10:23:42,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 10:23:42,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:42,758 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:42,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-13 10:23:42,758 INFO L427 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:42,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:42,758 INFO L82 PathProgramCache]: Analyzing trace with hash -479780931, now seen corresponding path program 8 times [2020-10-13 10:23:42,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:42,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219695194] [2020-10-13 10:23:42,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:42,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:42,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:42,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:43,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:43,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:44,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:44,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 10:23:44,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:23:44,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1393 [2020-10-13 10:23:44,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:44,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:23:44,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:23:44,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 10:23:44,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:44,874 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 31 [2020-10-13 10:23:45,268 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 56 [2020-10-13 10:23:46,005 WARN L193 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 70 [2020-10-13 10:23:46,503 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 73 [2020-10-13 10:23:47,019 WARN L193 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 69 [2020-10-13 10:23:47,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:47,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:47,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:47,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:47,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:47,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:47,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:47,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:47,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:47,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:47,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:47,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:47,494 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:47,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219695194] [2020-10-13 10:23:47,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:47,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:23:47,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923690313] [2020-10-13 10:23:47,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:23:47,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:47,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:23:47,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:23:47,495 INFO L87 Difference]: Start difference. First operand 719 states and 803 transitions. Second operand 15 states. [2020-10-13 10:23:48,120 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2020-10-13 10:23:48,754 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 113 [2020-10-13 10:23:49,443 WARN L193 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 106 [2020-10-13 10:23:49,946 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 110 [2020-10-13 10:23:50,308 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2020-10-13 10:23:51,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:51,460 INFO L93 Difference]: Finished difference Result 976 states and 1091 transitions. [2020-10-13 10:23:51,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 10:23:51,461 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 69 [2020-10-13 10:23:51,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:51,465 INFO L225 Difference]: With dead ends: 976 [2020-10-13 10:23:51,465 INFO L226 Difference]: Without dead ends: 974 [2020-10-13 10:23:51,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=125, Invalid=745, Unknown=0, NotChecked=0, Total=870 [2020-10-13 10:23:51,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2020-10-13 10:23:51,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 719. [2020-10-13 10:23:51,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 719 states. [2020-10-13 10:23:51,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 803 transitions. [2020-10-13 10:23:51,530 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 803 transitions. Word has length 69 [2020-10-13 10:23:51,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:51,530 INFO L479 AbstractCegarLoop]: Abstraction has 719 states and 803 transitions. [2020-10-13 10:23:51,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:23:51,530 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 803 transitions. [2020-10-13 10:23:51,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 10:23:51,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:51,532 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:23:51,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-13 10:23:51,532 INFO L427 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:23:51,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:51,532 INFO L82 PathProgramCache]: Analyzing trace with hash 976740285, now seen corresponding path program 9 times [2020-10-13 10:23:51,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:51,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189158066] [2020-10-13 10:23:51,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:51,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:51,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:51,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:52,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:52,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:52,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:52,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 10:23:52,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:23:52,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1399 [2020-10-13 10:23:52,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:52,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:23:52,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:23:52,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 10:23:52,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:53,548 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 31 [2020-10-13 10:23:54,157 WARN L193 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 55 [2020-10-13 10:23:55,159 WARN L193 SmtUtils]: Spent 963.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 77 [2020-10-13 10:23:55,877 WARN L193 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 79 [2020-10-13 10:23:56,110 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 40 [2020-10-13 10:23:56,453 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 27 [2020-10-13 10:23:56,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:56,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:56,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:56,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:56,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:56,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:56,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:56,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:56,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:56,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:56,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:56,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:56,735 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:56,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189158066] [2020-10-13 10:23:56,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:56,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:23:56,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673110488] [2020-10-13 10:23:56,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:23:56,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:56,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:23:56,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:23:56,737 INFO L87 Difference]: Start difference. First operand 719 states and 803 transitions. Second operand 15 states. [2020-10-13 10:23:57,371 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 82 [2020-10-13 10:23:57,683 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 88 [2020-10-13 10:23:58,215 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 102 [2020-10-13 10:23:58,488 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2020-10-13 10:23:58,920 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 110 [2020-10-13 10:23:59,472 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 121 [2020-10-13 10:24:00,120 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 67 [2020-10-13 10:24:00,352 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 63 [2020-10-13 10:24:00,668 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 67 [2020-10-13 10:24:01,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:01,303 INFO L93 Difference]: Finished difference Result 1107 states and 1241 transitions. [2020-10-13 10:24:01,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 10:24:01,304 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 69 [2020-10-13 10:24:01,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:01,311 INFO L225 Difference]: With dead ends: 1107 [2020-10-13 10:24:01,311 INFO L226 Difference]: Without dead ends: 1105 [2020-10-13 10:24:01,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=144, Invalid=848, Unknown=0, NotChecked=0, Total=992 [2020-10-13 10:24:01,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2020-10-13 10:24:01,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 767. [2020-10-13 10:24:01,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 767 states. [2020-10-13 10:24:01,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 861 transitions. [2020-10-13 10:24:01,468 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 861 transitions. Word has length 69 [2020-10-13 10:24:01,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:01,468 INFO L479 AbstractCegarLoop]: Abstraction has 767 states and 861 transitions. [2020-10-13 10:24:01,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:24:01,469 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 861 transitions. [2020-10-13 10:24:01,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 10:24:01,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:01,471 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:01,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-13 10:24:01,472 INFO L427 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:01,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:01,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1251399875, now seen corresponding path program 3 times [2020-10-13 10:24:01,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:01,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610640744] [2020-10-13 10:24:01,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:01,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:01,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:01,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:02,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:02,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:03,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:03,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 10:24:03,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:24:03,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1880 [2020-10-13 10:24:03,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:03,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:24:03,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:24:03,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 10:24:03,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:04,337 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 31 [2020-10-13 10:24:05,103 WARN L193 SmtUtils]: Spent 747.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 61 [2020-10-13 10:24:06,002 WARN L193 SmtUtils]: Spent 875.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 69 [2020-10-13 10:24:07,122 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 154 DAG size of output: 110 [2020-10-13 10:24:07,859 WARN L193 SmtUtils]: Spent 698.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 74 [2020-10-13 10:24:08,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:08,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:08,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:08,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:08,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:08,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:08,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:08,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:08,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:08,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:08,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:08,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:08,445 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:08,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1610640744] [2020-10-13 10:24:08,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:08,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:24:08,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313592384] [2020-10-13 10:24:08,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:24:08,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:08,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:24:08,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:24:08,447 INFO L87 Difference]: Start difference. First operand 767 states and 861 transitions. Second operand 15 states. [2020-10-13 10:24:09,168 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2020-10-13 10:24:09,465 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 68 [2020-10-13 10:24:09,982 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 95 [2020-10-13 10:24:10,550 WARN L193 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 113 [2020-10-13 10:24:11,789 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 160 DAG size of output: 128 [2020-10-13 10:24:12,242 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 87 [2020-10-13 10:24:12,957 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 106 [2020-10-13 10:24:13,356 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 87 [2020-10-13 10:24:14,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:14,565 INFO L93 Difference]: Finished difference Result 1048 states and 1179 transitions. [2020-10-13 10:24:14,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-13 10:24:14,566 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 69 [2020-10-13 10:24:14,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:14,571 INFO L225 Difference]: With dead ends: 1048 [2020-10-13 10:24:14,571 INFO L226 Difference]: Without dead ends: 1046 [2020-10-13 10:24:14,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=145, Invalid=911, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 10:24:14,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2020-10-13 10:24:14,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 791. [2020-10-13 10:24:14,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 791 states. [2020-10-13 10:24:14,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 889 transitions. [2020-10-13 10:24:14,641 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 889 transitions. Word has length 69 [2020-10-13 10:24:14,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:14,641 INFO L479 AbstractCegarLoop]: Abstraction has 791 states and 889 transitions. [2020-10-13 10:24:14,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:24:14,642 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 889 transitions. [2020-10-13 10:24:14,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 10:24:14,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:14,643 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:14,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-13 10:24:14,643 INFO L427 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:14,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:14,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1373167084, now seen corresponding path program 4 times [2020-10-13 10:24:14,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:14,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1145436337] [2020-10-13 10:24:14,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:14,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:14,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:14,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:14,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:14,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:15,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:15,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:15,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:15,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 10:24:15,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 10:24:15,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1105 [2020-10-13 10:24:15,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:15,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:24:15,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:24:15,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 10:24:15,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:16,063 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 35 [2020-10-13 10:24:16,244 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 37 [2020-10-13 10:24:16,593 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 66 [2020-10-13 10:24:16,916 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2020-10-13 10:24:17,186 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 49 [2020-10-13 10:24:17,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:17,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:17,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:17,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:17,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:17,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:17,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:17,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:17,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:17,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:17,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:17,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:17,527 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:17,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1145436337] [2020-10-13 10:24:17,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:17,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:24:17,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399923442] [2020-10-13 10:24:17,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:24:17,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:17,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:24:17,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:24:17,528 INFO L87 Difference]: Start difference. First operand 791 states and 889 transitions. Second operand 15 states. [2020-10-13 10:24:18,012 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 64 [2020-10-13 10:24:18,523 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 89 [2020-10-13 10:24:18,739 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-10-13 10:24:19,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:19,773 INFO L93 Difference]: Finished difference Result 994 states and 1118 transitions. [2020-10-13 10:24:19,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 10:24:19,774 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 72 [2020-10-13 10:24:19,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:19,777 INFO L225 Difference]: With dead ends: 994 [2020-10-13 10:24:19,777 INFO L226 Difference]: Without dead ends: 992 [2020-10-13 10:24:19,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=134, Invalid=736, Unknown=0, NotChecked=0, Total=870 [2020-10-13 10:24:19,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2020-10-13 10:24:19,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 834. [2020-10-13 10:24:19,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 834 states. [2020-10-13 10:24:19,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 937 transitions. [2020-10-13 10:24:19,867 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 937 transitions. Word has length 72 [2020-10-13 10:24:19,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:19,867 INFO L479 AbstractCegarLoop]: Abstraction has 834 states and 937 transitions. [2020-10-13 10:24:19,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:24:19,867 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 937 transitions. [2020-10-13 10:24:19,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 10:24:19,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:19,869 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:19,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-13 10:24:19,869 INFO L427 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:19,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:19,870 INFO L82 PathProgramCache]: Analyzing trace with hash 2090754580, now seen corresponding path program 5 times [2020-10-13 10:24:19,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:19,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292811251] [2020-10-13 10:24:19,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:19,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:19,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:19,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:20,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:20,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:20,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:20,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:21,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:21,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 10:24:21,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 10:24:21,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1735 [2020-10-13 10:24:21,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:21,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:24:21,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:24:21,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 10:24:21,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:22,010 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-10-13 10:24:22,208 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2020-10-13 10:24:22,422 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 44 [2020-10-13 10:24:22,760 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 57 [2020-10-13 10:24:22,911 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 39 [2020-10-13 10:24:23,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:23,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:23,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:23,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:23,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:23,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:23,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:23,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:23,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:23,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:23,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:23,212 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:23,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292811251] [2020-10-13 10:24:23,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:23,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:24:23,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685877309] [2020-10-13 10:24:23,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:24:23,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:23,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:24:23,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:24:23,214 INFO L87 Difference]: Start difference. First operand 834 states and 937 transitions. Second operand 15 states. [2020-10-13 10:24:23,615 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 52 [2020-10-13 10:24:23,873 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 71 [2020-10-13 10:24:24,191 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 66 [2020-10-13 10:24:24,517 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 87 [2020-10-13 10:24:24,815 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2020-10-13 10:24:25,369 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 67 [2020-10-13 10:24:25,538 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2020-10-13 10:24:26,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:26,446 INFO L93 Difference]: Finished difference Result 1061 states and 1194 transitions. [2020-10-13 10:24:26,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-13 10:24:26,446 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 72 [2020-10-13 10:24:26,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:26,450 INFO L225 Difference]: With dead ends: 1061 [2020-10-13 10:24:26,450 INFO L226 Difference]: Without dead ends: 1059 [2020-10-13 10:24:26,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=166, Invalid=890, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 10:24:26,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2020-10-13 10:24:26,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 838. [2020-10-13 10:24:26,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 838 states. [2020-10-13 10:24:26,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 943 transitions. [2020-10-13 10:24:26,528 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 943 transitions. Word has length 72 [2020-10-13 10:24:26,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:26,529 INFO L479 AbstractCegarLoop]: Abstraction has 838 states and 943 transitions. [2020-10-13 10:24:26,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:24:26,529 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 943 transitions. [2020-10-13 10:24:26,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 10:24:26,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:26,531 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:26,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-13 10:24:26,531 INFO L427 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:26,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:26,531 INFO L82 PathProgramCache]: Analyzing trace with hash -2008159596, now seen corresponding path program 6 times [2020-10-13 10:24:26,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:26,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939327523] [2020-10-13 10:24:26,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:26,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:26,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:26,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:26,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:27,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:27,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:28,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:28,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 10:24:28,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 10:24:28,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1492 [2020-10-13 10:24:28,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:28,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:24:28,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:24:28,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 10:24:28,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:28,484 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2020-10-13 10:24:28,656 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2020-10-13 10:24:28,873 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 47 [2020-10-13 10:24:29,153 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 58 [2020-10-13 10:24:29,540 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 64 [2020-10-13 10:24:29,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:29,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:29,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:29,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:29,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:29,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:29,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:29,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:29,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:29,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:29,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:29,953 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:29,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939327523] [2020-10-13 10:24:29,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:29,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:24:29,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794557865] [2020-10-13 10:24:29,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:24:29,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:29,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:24:29,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:24:29,955 INFO L87 Difference]: Start difference. First operand 838 states and 943 transitions. Second operand 15 states. [2020-10-13 10:24:30,310 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-13 10:24:30,559 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2020-10-13 10:24:30,899 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 76 [2020-10-13 10:24:31,390 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 97 [2020-10-13 10:24:31,677 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 73 [2020-10-13 10:24:31,910 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-13 10:24:32,412 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 99 [2020-10-13 10:24:32,663 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 82 [2020-10-13 10:24:33,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:33,503 INFO L93 Difference]: Finished difference Result 1096 states and 1232 transitions. [2020-10-13 10:24:33,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-13 10:24:33,503 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 72 [2020-10-13 10:24:33,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:33,507 INFO L225 Difference]: With dead ends: 1096 [2020-10-13 10:24:33,508 INFO L226 Difference]: Without dead ends: 1094 [2020-10-13 10:24:33,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=156, Invalid=900, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 10:24:33,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2020-10-13 10:24:33,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 838. [2020-10-13 10:24:33,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 838 states. [2020-10-13 10:24:33,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 943 transitions. [2020-10-13 10:24:33,623 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 943 transitions. Word has length 72 [2020-10-13 10:24:33,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:33,624 INFO L479 AbstractCegarLoop]: Abstraction has 838 states and 943 transitions. [2020-10-13 10:24:33,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:24:33,624 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 943 transitions. [2020-10-13 10:24:33,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 10:24:33,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:33,625 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:33,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-13 10:24:33,626 INFO L427 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:33,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:33,626 INFO L82 PathProgramCache]: Analyzing trace with hash 305504788, now seen corresponding path program 7 times [2020-10-13 10:24:33,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:33,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077456915] [2020-10-13 10:24:33,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:33,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:33,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:33,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:33,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:34,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:34,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:34,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 10:24:34,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:24:34,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 867 [2020-10-13 10:24:34,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:34,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:24:34,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:24:34,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 10:24:34,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:34,877 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 35 [2020-10-13 10:24:35,369 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2020-10-13 10:24:35,742 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 93 [2020-10-13 10:24:36,091 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 93 [2020-10-13 10:24:36,293 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 41 [2020-10-13 10:24:36,591 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 25 [2020-10-13 10:24:36,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:36,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:36,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:36,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:36,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:36,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:36,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:36,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:36,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:36,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:36,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:36,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:36,802 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:36,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077456915] [2020-10-13 10:24:36,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:36,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:24:36,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635180691] [2020-10-13 10:24:36,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:24:36,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:36,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:24:36,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:24:36,803 INFO L87 Difference]: Start difference. First operand 838 states and 943 transitions. Second operand 15 states. [2020-10-13 10:24:37,196 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2020-10-13 10:24:37,462 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 77 [2020-10-13 10:24:37,799 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 81 [2020-10-13 10:24:38,286 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 109 [2020-10-13 10:24:38,760 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 120 [2020-10-13 10:24:39,335 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 139 [2020-10-13 10:24:39,893 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 61 [2020-10-13 10:24:40,102 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 57 [2020-10-13 10:24:40,386 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 61 [2020-10-13 10:24:41,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:41,088 INFO L93 Difference]: Finished difference Result 1057 states and 1188 transitions. [2020-10-13 10:24:41,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 10:24:41,089 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 72 [2020-10-13 10:24:41,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:41,094 INFO L225 Difference]: With dead ends: 1057 [2020-10-13 10:24:41,094 INFO L226 Difference]: Without dead ends: 1055 [2020-10-13 10:24:41,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2020-10-13 10:24:41,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2020-10-13 10:24:41,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 834. [2020-10-13 10:24:41,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 834 states. [2020-10-13 10:24:41,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 939 transitions. [2020-10-13 10:24:41,182 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 939 transitions. Word has length 72 [2020-10-13 10:24:41,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:41,183 INFO L479 AbstractCegarLoop]: Abstraction has 834 states and 939 transitions. [2020-10-13 10:24:41,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:24:41,183 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 939 transitions. [2020-10-13 10:24:41,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 10:24:41,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:41,184 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:41,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-13 10:24:41,185 INFO L427 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:41,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:41,185 INFO L82 PathProgramCache]: Analyzing trace with hash -329487724, now seen corresponding path program 8 times [2020-10-13 10:24:41,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:41,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214975609] [2020-10-13 10:24:41,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:41,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:41,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:41,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:41,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:42,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:42,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:42,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 10:24:42,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:24:42,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1306 [2020-10-13 10:24:42,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:42,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:24:42,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:24:42,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-13 10:24:42,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:43,224 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 31 [2020-10-13 10:24:44,346 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 105 DAG size of output: 70 [2020-10-13 10:24:45,208 WARN L193 SmtUtils]: Spent 832.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 90 [2020-10-13 10:24:46,085 WARN L193 SmtUtils]: Spent 842.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 85 [2020-10-13 10:24:46,563 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 65 [2020-10-13 10:24:46,707 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 28 [2020-10-13 10:24:46,853 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 29 [2020-10-13 10:24:46,999 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 26 [2020-10-13 10:24:47,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:47,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:47,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:47,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:47,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:47,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:47,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:24:47,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:47,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:47,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:47,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:47,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:47,248 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:47,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214975609] [2020-10-13 10:24:47,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:47,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:24:47,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17694009] [2020-10-13 10:24:47,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:24:47,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:47,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:24:47,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:24:47,250 INFO L87 Difference]: Start difference. First operand 834 states and 939 transitions. Second operand 15 states. [2020-10-13 10:24:47,648 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 51 [2020-10-13 10:24:47,944 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 79 [2020-10-13 10:24:48,538 WARN L193 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 88 [2020-10-13 10:24:49,210 WARN L193 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 113 [2020-10-13 10:24:49,971 WARN L193 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 118 [2020-10-13 10:24:50,491 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 101 [2020-10-13 10:24:51,093 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 60 [2020-10-13 10:24:51,345 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 57 [2020-10-13 10:24:51,633 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 61 [2020-10-13 10:24:51,916 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 48 [2020-10-13 10:24:52,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:52,424 INFO L93 Difference]: Finished difference Result 1086 states and 1219 transitions. [2020-10-13 10:24:52,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 10:24:52,424 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 72 [2020-10-13 10:24:52,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:52,427 INFO L225 Difference]: With dead ends: 1086 [2020-10-13 10:24:52,427 INFO L226 Difference]: Without dead ends: 1084 [2020-10-13 10:24:52,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=145, Invalid=785, Unknown=0, NotChecked=0, Total=930 [2020-10-13 10:24:52,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2020-10-13 10:24:52,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 875. [2020-10-13 10:24:52,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 875 states. [2020-10-13 10:24:52,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 985 transitions. [2020-10-13 10:24:52,518 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 985 transitions. Word has length 72 [2020-10-13 10:24:52,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:52,518 INFO L479 AbstractCegarLoop]: Abstraction has 875 states and 985 transitions. [2020-10-13 10:24:52,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:24:52,518 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 985 transitions. [2020-10-13 10:24:52,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-13 10:24:52,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:52,519 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:52,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-13 10:24:52,519 INFO L427 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:52,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:52,520 INFO L82 PathProgramCache]: Analyzing trace with hash -2010789536, now seen corresponding path program 3 times [2020-10-13 10:24:52,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:52,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541660299] [2020-10-13 10:24:52,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:52,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:52,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:52,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:52,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:52,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:53,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:53,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:53,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:53,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:53,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:53,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:53,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:55,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:55,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:55,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 10:24:55,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 10:24:55,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2972 [2020-10-13 10:24:55,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:55,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:24:55,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-13 10:24:55,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 10:24:55,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:55,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:55,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:55,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:55,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:55,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:55,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:55,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:55,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:55,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:55,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:55,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:55,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:55,661 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-13 10:24:55,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [541660299] [2020-10-13 10:24:55,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:55,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:24:55,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309990820] [2020-10-13 10:24:55,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:24:55,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:55,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:24:55,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:24:55,662 INFO L87 Difference]: Start difference. First operand 875 states and 985 transitions. Second operand 11 states. [2020-10-13 10:24:56,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:56,594 INFO L93 Difference]: Finished difference Result 1102 states and 1239 transitions. [2020-10-13 10:24:56,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 10:24:56,595 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 73 [2020-10-13 10:24:56,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:56,597 INFO L225 Difference]: With dead ends: 1102 [2020-10-13 10:24:56,597 INFO L226 Difference]: Without dead ends: 1086 [2020-10-13 10:24:56,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:24:56,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2020-10-13 10:24:56,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 989. [2020-10-13 10:24:56,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 989 states. [2020-10-13 10:24:56,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1121 transitions. [2020-10-13 10:24:56,702 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1121 transitions. Word has length 73 [2020-10-13 10:24:56,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:56,703 INFO L479 AbstractCegarLoop]: Abstraction has 989 states and 1121 transitions. [2020-10-13 10:24:56,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:24:56,703 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1121 transitions. [2020-10-13 10:24:56,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-13 10:24:56,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:56,704 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:24:56,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-13 10:24:56,704 INFO L427 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:24:56,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:56,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1909546015, now seen corresponding path program 1 times [2020-10-13 10:24:56,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:56,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754324813] [2020-10-13 10:24:56,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:56,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:56,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:56,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:56,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:57,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:57,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:57,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:57,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:57,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 10:24:57,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 10:24:57,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1066 [2020-10-13 10:24:57,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:57,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:24:57,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:24:57,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 10:24:57,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:57,984 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2020-10-13 10:24:58,229 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 53 [2020-10-13 10:24:58,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:58,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:58,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:58,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:58,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:58,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:58,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:58,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:58,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:58,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:58,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:58,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:58,821 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 27 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 10:24:58,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754324813] [2020-10-13 10:24:58,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:58,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:24:58,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223390230] [2020-10-13 10:24:58,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:24:58,823 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:58,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:24:58,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:24:58,823 INFO L87 Difference]: Start difference. First operand 989 states and 1121 transitions. Second operand 13 states. [2020-10-13 10:24:59,360 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 79 [2020-10-13 10:24:59,723 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 90 [2020-10-13 10:24:59,973 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2020-10-13 10:25:00,382 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-13 10:25:00,564 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-10-13 10:25:00,867 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2020-10-13 10:25:02,113 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2020-10-13 10:25:02,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:02,355 INFO L93 Difference]: Finished difference Result 1206 states and 1361 transitions. [2020-10-13 10:25:02,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-13 10:25:02,356 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 73 [2020-10-13 10:25:02,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:02,358 INFO L225 Difference]: With dead ends: 1206 [2020-10-13 10:25:02,358 INFO L226 Difference]: Without dead ends: 1131 [2020-10-13 10:25:02,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=154, Invalid=776, Unknown=0, NotChecked=0, Total=930 [2020-10-13 10:25:02,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2020-10-13 10:25:02,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 1050. [2020-10-13 10:25:02,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1050 states. [2020-10-13 10:25:02,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1183 transitions. [2020-10-13 10:25:02,545 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1183 transitions. Word has length 73 [2020-10-13 10:25:02,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:02,545 INFO L479 AbstractCegarLoop]: Abstraction has 1050 states and 1183 transitions. [2020-10-13 10:25:02,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:25:02,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1183 transitions. [2020-10-13 10:25:02,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-13 10:25:02,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:02,546 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:25:02,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-13 10:25:02,546 INFO L427 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:02,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:02,547 INFO L82 PathProgramCache]: Analyzing trace with hash -595352673, now seen corresponding path program 1 times [2020-10-13 10:25:02,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:02,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057522770] [2020-10-13 10:25:02,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:02,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:02,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:02,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:02,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking...