/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-queue-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:21:42,840 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:21:42,842 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:21:42,884 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:21:42,884 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:21:42,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:21:42,894 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:21:42,897 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:21:42,899 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:21:42,902 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:21:42,903 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:21:42,904 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:21:42,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:21:42,907 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:21:42,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:21:42,911 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:21:42,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:21:42,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:21:42,914 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:21:42,923 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:21:42,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:21:42,926 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:21:42,927 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:21:42,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:21:42,938 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:21:42,938 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:21:42,938 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:21:42,939 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:21:42,940 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:21:42,942 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:21:42,943 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:21:42,943 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:21:42,944 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:21:42,944 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:21:42,945 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:21:42,946 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:21:42,947 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:21:42,947 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:21:42,947 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:21:42,948 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:21:42,949 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:21:42,950 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 10:21:42,989 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:21:42,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:21:42,991 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:21:42,991 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:21:42,991 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:21:42,991 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:21:42,992 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:21:42,992 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:21:42,992 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:21:42,992 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:21:42,993 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:21:42,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:21:42,994 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:21:42,994 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:21:42,994 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:21:42,994 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:21:42,994 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:21:42,995 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:21:42,995 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:21:42,995 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:21:42,995 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:21:42,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:21:42,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:21:42,996 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:21:42,996 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:21:42,996 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:21:42,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:21:42,997 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:21:42,997 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:21:42,997 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 10:21:43,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:21:43,314 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:21:43,321 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:21:43,322 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:21:43,322 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:21:43,323 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-queue-1.i [2020-10-13 10:21:43,379 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2b94b8706/56e5ec9df70e443a8615fa16e9df80f4/FLAGc4ab3f2b5 [2020-10-13 10:21:43,854 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:21:43,855 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-queue-1.i [2020-10-13 10:21:43,877 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2b94b8706/56e5ec9df70e443a8615fa16e9df80f4/FLAGc4ab3f2b5 [2020-10-13 10:21:44,196 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2b94b8706/56e5ec9df70e443a8615fa16e9df80f4 [2020-10-13 10:21:44,205 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:21:44,207 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:21:44,208 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:21:44,208 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:21:44,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:21:44,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:21:44" (1/1) ... [2020-10-13 10:21:44,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35af59c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:44, skipping insertion in model container [2020-10-13 10:21:44,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:21:44" (1/1) ... [2020-10-13 10:21:44,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:21:44,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:21:44,699 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:21:44,709 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:21:44,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:21:44,810 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:21:44,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:44 WrapperNode [2020-10-13 10:21:44,810 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:21:44,811 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:21:44,811 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:21:44,811 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:21:44,825 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:44" (1/1) ... [2020-10-13 10:21:44,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:44" (1/1) ... [2020-10-13 10:21:44,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:44" (1/1) ... [2020-10-13 10:21:44,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:44" (1/1) ... [2020-10-13 10:21:44,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:44" (1/1) ... [2020-10-13 10:21:44,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:44" (1/1) ... [2020-10-13 10:21:44,875 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:44" (1/1) ... [2020-10-13 10:21:44,882 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:21:44,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:21:44,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:21:44,883 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:21:44,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:44" (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 10:21:44,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:21:44,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:21:44,934 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:21:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-13 10:21:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-13 10:21:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-13 10:21:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-13 10:21:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-13 10:21:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-13 10:21:44,935 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-13 10:21:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-13 10:21:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-13 10:21:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-13 10:21:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-13 10:21:44,936 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-13 10:21:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-13 10:21:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-13 10:21:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-13 10:21:44,937 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-13 10:21:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-13 10:21:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-13 10:21:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-13 10:21:44,938 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-13 10:21:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-13 10:21:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-13 10:21:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-13 10:21:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-13 10:21:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-13 10:21:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-13 10:21:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-13 10:21:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-13 10:21:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-13 10:21:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-13 10:21:44,941 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-13 10:21:44,941 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-13 10:21:44,941 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-13 10:21:44,941 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-13 10:21:44,941 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-13 10:21:44,941 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-13 10:21:44,941 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-13 10:21:44,942 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-13 10:21:44,942 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-13 10:21:44,942 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-13 10:21:44,942 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-13 10:21:44,942 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-13 10:21:44,942 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-13 10:21:44,942 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-13 10:21:44,943 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-13 10:21:44,943 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-13 10:21:44,943 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-13 10:21:44,943 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-13 10:21:44,943 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-13 10:21:44,943 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-13 10:21:44,944 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 10:21:44,945 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-13 10:21:44,945 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-13 10:21:44,945 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-13 10:21:44,945 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-13 10:21:44,945 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-13 10:21:44,945 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-13 10:21:44,946 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-13 10:21:44,946 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-13 10:21:44,946 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 10:21:44,946 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-13 10:21:44,946 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-13 10:21:44,946 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-13 10:21:44,947 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 10:21:44,947 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-13 10:21:44,948 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-13 10:21:44,948 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-13 10:21:44,948 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-13 10:21:44,950 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-13 10:21:44,950 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-13 10:21:44,950 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-13 10:21:44,950 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-13 10:21:44,950 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-13 10:21:44,951 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-13 10:21:44,951 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-13 10:21:44,951 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-13 10:21:44,951 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-13 10:21:44,951 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-13 10:21:44,951 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-13 10:21:44,951 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-13 10:21:44,952 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-13 10:21:44,952 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-13 10:21:44,952 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-13 10:21:44,952 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-13 10:21:44,953 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-13 10:21:44,953 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-13 10:21:44,953 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-13 10:21:44,953 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-13 10:21:44,953 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-13 10:21:44,954 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-13 10:21:44,954 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-13 10:21:44,954 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-13 10:21:44,954 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-13 10:21:44,954 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-13 10:21:44,954 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-13 10:21:44,954 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-13 10:21:44,955 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-13 10:21:44,955 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-13 10:21:44,955 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-13 10:21:44,955 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-13 10:21:44,955 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-13 10:21:44,955 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-13 10:21:44,955 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-13 10:21:44,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 10:21:44,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:21:44,956 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:21:44,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 10:21:44,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-13 10:21:44,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 10:21:44,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-13 10:21:44,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 10:21:44,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:21:44,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:21:44,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:21:45,572 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:21:45,572 INFO L295 CfgBuilder]: Removed 31 assume(true) statements. [2020-10-13 10:21:45,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:21:45 BoogieIcfgContainer [2020-10-13 10:21:45,577 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:21:45,578 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:21:45,578 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:21:45,581 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:21:45,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:21:44" (1/3) ... [2020-10-13 10:21:45,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@224c9d2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:21:45, skipping insertion in model container [2020-10-13 10:21:45,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:21:44" (2/3) ... [2020-10-13 10:21:45,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@224c9d2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:21:45, skipping insertion in model container [2020-10-13 10:21:45,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:21:45" (3/3) ... [2020-10-13 10:21:45,585 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-queue-1.i [2020-10-13 10:21:45,595 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:21:45,602 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 14 error locations. [2020-10-13 10:21:45,615 INFO L251 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2020-10-13 10:21:45,638 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:21:45,638 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:21:45,638 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:21:45,638 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:21:45,639 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:21:45,639 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:21:45,639 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:21:45,639 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:21:45,660 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2020-10-13 10:21:45,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-13 10:21:45,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:45,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:45,667 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:21:45,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:45,677 INFO L82 PathProgramCache]: Analyzing trace with hash 786631415, now seen corresponding path program 1 times [2020-10-13 10:21:45,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:45,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990466311] [2020-10-13 10:21:45,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:45,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:45,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:45,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:45,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:45,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 10:21:45,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:45,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-13 10:21:46,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:46,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:46,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 10:21:46,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:46,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 26 [2020-10-13 10:21:46,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:46,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:46,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:46,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:46,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:46,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:46,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 10:21:46,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:46,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:46,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:46,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:46,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 10:21:46,150 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 10:21:46,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990466311] [2020-10-13 10:21:46,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:46,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 10:21:46,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885953732] [2020-10-13 10:21:46,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 10:21:46,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:46,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 10:21:46,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 10:21:46,178 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 3 states. [2020-10-13 10:21:46,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:46,372 INFO L93 Difference]: Finished difference Result 174 states and 284 transitions. [2020-10-13 10:21:46,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 10:21:46,374 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-13 10:21:46,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:46,386 INFO L225 Difference]: With dead ends: 174 [2020-10-13 10:21:46,386 INFO L226 Difference]: Without dead ends: 84 [2020-10-13 10:21:46,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 10:21:46,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-13 10:21:46,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-10-13 10:21:46,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-13 10:21:46,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 93 transitions. [2020-10-13 10:21:46,436 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 93 transitions. Word has length 9 [2020-10-13 10:21:46,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:46,437 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 93 transitions. [2020-10-13 10:21:46,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 10:21:46,437 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 93 transitions. [2020-10-13 10:21:46,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-13 10:21:46,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:46,438 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:46,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:21:46,439 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:21:46,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:46,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1385985618, now seen corresponding path program 1 times [2020-10-13 10:21:46,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:46,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010526940] [2020-10-13 10:21:46,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:46,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:46,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:46,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:46,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 10:21:46,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:46,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 10:21:46,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:46,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:21:46,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:46,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 10:21:46,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:46,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:46,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:46,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:46,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:46,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:46,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:46,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:21:46,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:46,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:46,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:46,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:46,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:46,569 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 10:21:46,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010526940] [2020-10-13 10:21:46,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:46,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:21:46,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371216019] [2020-10-13 10:21:46,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:21:46,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:46,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:21:46,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:46,573 INFO L87 Difference]: Start difference. First operand 84 states and 93 transitions. Second operand 4 states. [2020-10-13 10:21:46,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:46,721 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2020-10-13 10:21:46,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:21:46,722 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-13 10:21:46,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:46,723 INFO L225 Difference]: With dead ends: 84 [2020-10-13 10:21:46,724 INFO L226 Difference]: Without dead ends: 74 [2020-10-13 10:21:46,725 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 10:21:46,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-13 10:21:46,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-13 10:21:46,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-13 10:21:46,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2020-10-13 10:21:46,735 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 10 [2020-10-13 10:21:46,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:46,736 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2020-10-13 10:21:46,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:21:46,736 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2020-10-13 10:21:46,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-13 10:21:46,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:46,737 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:46,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:21:46,737 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:21:46,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:46,738 INFO L82 PathProgramCache]: Analyzing trace with hash 1923530661, now seen corresponding path program 1 times [2020-10-13 10:21:46,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:46,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330216188] [2020-10-13 10:21:46,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:46,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:46,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:46,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:46,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-13 10:21:46,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:46,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-13 10:21:46,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:46,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:21:46,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 10:21:46,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 10:21:46,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:46,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:46,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:46,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:46,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:46,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:46,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:46,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:21:46,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:46,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:46,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:46,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:46,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:46,852 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 10:21:46,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330216188] [2020-10-13 10:21:46,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:46,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:21:46,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543359705] [2020-10-13 10:21:46,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:21:46,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:46,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:21:46,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:46,854 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand 4 states. [2020-10-13 10:21:46,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:46,986 INFO L93 Difference]: Finished difference Result 74 states and 83 transitions. [2020-10-13 10:21:46,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:21:46,986 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-13 10:21:46,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:46,988 INFO L225 Difference]: With dead ends: 74 [2020-10-13 10:21:46,988 INFO L226 Difference]: Without dead ends: 72 [2020-10-13 10:21:46,988 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 10:21:46,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-13 10:21:46,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-10-13 10:21:46,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-13 10:21:46,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2020-10-13 10:21:46,998 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 13 [2020-10-13 10:21:46,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:46,998 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2020-10-13 10:21:46,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:21:46,999 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2020-10-13 10:21:46,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-13 10:21:46,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:47,000 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:47,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 10:21:47,000 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:21:47,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:47,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1449483421, now seen corresponding path program 1 times [2020-10-13 10:21:47,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:47,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252440613] [2020-10-13 10:21:47,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:47,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:47,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:47,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:47,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 10:21:47,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:47,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 10:21:47,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:47,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:21:47,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:47,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:21:47,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:47,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:47,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:47,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:47,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:47,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:47,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:47,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:21:47,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:47,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:47,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:47,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:47,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:47,081 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 10:21:47,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252440613] [2020-10-13 10:21:47,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:47,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:21:47,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242840808] [2020-10-13 10:21:47,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:21:47,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:47,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:21:47,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:47,084 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand 4 states. [2020-10-13 10:21:47,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:47,232 INFO L93 Difference]: Finished difference Result 157 states and 182 transitions. [2020-10-13 10:21:47,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:21:47,233 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-13 10:21:47,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:47,234 INFO L225 Difference]: With dead ends: 157 [2020-10-13 10:21:47,234 INFO L226 Difference]: Without dead ends: 91 [2020-10-13 10:21:47,236 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 10:21:47,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-13 10:21:47,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 80. [2020-10-13 10:21:47,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-13 10:21:47,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 90 transitions. [2020-10-13 10:21:47,245 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 90 transitions. Word has length 16 [2020-10-13 10:21:47,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:47,246 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 90 transitions. [2020-10-13 10:21:47,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:21:47,246 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 90 transitions. [2020-10-13 10:21:47,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 10:21:47,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:47,247 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] [2020-10-13 10:21:47,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 10:21:47,248 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:21:47,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:47,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1095322203, now seen corresponding path program 1 times [2020-10-13 10:21:47,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:47,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173915465] [2020-10-13 10:21:47,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:47,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:47,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:47,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:47,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:47,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:47,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 10:21:47,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:21:47,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-13 10:21:47,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:47,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:21:47,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 10:21:47,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 10:21:47,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:47,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:47,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:47,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:47,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:47,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:47,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:47,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:47,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:47,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:47,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:47,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:47,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:47,485 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 10:21:47,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173915465] [2020-10-13 10:21:47,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:47,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:21:47,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642675564] [2020-10-13 10:21:47,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:21:47,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:47,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:21:47,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:47,489 INFO L87 Difference]: Start difference. First operand 80 states and 90 transitions. Second operand 4 states. [2020-10-13 10:21:47,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:47,605 INFO L93 Difference]: Finished difference Result 83 states and 93 transitions. [2020-10-13 10:21:47,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:21:47,606 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-13 10:21:47,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:47,607 INFO L225 Difference]: With dead ends: 83 [2020-10-13 10:21:47,607 INFO L226 Difference]: Without dead ends: 81 [2020-10-13 10:21:47,609 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 10:21:47,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-13 10:21:47,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-10-13 10:21:47,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-13 10:21:47,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 91 transitions. [2020-10-13 10:21:47,624 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 91 transitions. Word has length 21 [2020-10-13 10:21:47,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:47,625 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 91 transitions. [2020-10-13 10:21:47,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:21:47,627 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 91 transitions. [2020-10-13 10:21:47,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 10:21:47,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:47,628 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] [2020-10-13 10:21:47,629 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 10:21:47,629 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:21:47,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:47,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1095324125, now seen corresponding path program 1 times [2020-10-13 10:21:47,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:47,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126803290] [2020-10-13 10:21:47,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:47,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:47,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:47,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:47,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:47,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 10:21:47,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:47,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-13 10:21:47,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:47,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:21:47,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:47,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 10:21:47,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:47,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:47,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:47,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:47,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:47,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:47,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:47,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:21:47,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:47,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:47,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:47,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:47,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:47,892 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 10:21:47,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126803290] [2020-10-13 10:21:47,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:47,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 10:21:47,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819213442] [2020-10-13 10:21:47,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:21:47,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:47,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:21:47,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:21:47,895 INFO L87 Difference]: Start difference. First operand 81 states and 91 transitions. Second operand 6 states. [2020-10-13 10:21:48,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:48,084 INFO L93 Difference]: Finished difference Result 97 states and 110 transitions. [2020-10-13 10:21:48,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 10:21:48,085 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-13 10:21:48,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:48,086 INFO L225 Difference]: With dead ends: 97 [2020-10-13 10:21:48,086 INFO L226 Difference]: Without dead ends: 76 [2020-10-13 10:21:48,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:21:48,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-13 10:21:48,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-10-13 10:21:48,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-13 10:21:48,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 84 transitions. [2020-10-13 10:21:48,093 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 84 transitions. Word has length 21 [2020-10-13 10:21:48,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:48,093 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 84 transitions. [2020-10-13 10:21:48,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:21:48,093 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 84 transitions. [2020-10-13 10:21:48,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-13 10:21:48,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:48,094 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] [2020-10-13 10:21:48,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 10:21:48,095 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:21:48,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:48,095 INFO L82 PathProgramCache]: Analyzing trace with hash -648846271, now seen corresponding path program 1 times [2020-10-13 10:21:48,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:48,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359530004] [2020-10-13 10:21:48,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:48,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:48,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:48,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:48,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 10:21:48,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:48,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-13 10:21:48,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:48,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:21:48,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:48,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 10:21:48,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:48,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:48,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:48,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:48,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:48,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:48,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:48,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:48,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:48,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:48,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:48,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:48,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:48,262 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 10:21:48,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359530004] [2020-10-13 10:21:48,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:48,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 10:21:48,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263594169] [2020-10-13 10:21:48,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 10:21:48,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:48,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 10:21:48,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:21:48,265 INFO L87 Difference]: Start difference. First operand 76 states and 84 transitions. Second operand 7 states. [2020-10-13 10:21:48,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:48,458 INFO L93 Difference]: Finished difference Result 140 states and 153 transitions. [2020-10-13 10:21:48,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 10:21:48,458 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-13 10:21:48,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:48,459 INFO L225 Difference]: With dead ends: 140 [2020-10-13 10:21:48,460 INFO L226 Difference]: Without dead ends: 138 [2020-10-13 10:21:48,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:21:48,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-13 10:21:48,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 89. [2020-10-13 10:21:48,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-13 10:21:48,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 99 transitions. [2020-10-13 10:21:48,467 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 99 transitions. Word has length 23 [2020-10-13 10:21:48,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:48,468 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 99 transitions. [2020-10-13 10:21:48,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 10:21:48,468 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 99 transitions. [2020-10-13 10:21:48,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-13 10:21:48,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:48,469 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:48,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 10:21:48,470 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:21:48,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:48,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1678311806, now seen corresponding path program 1 times [2020-10-13 10:21:48,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:48,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344883711] [2020-10-13 10:21:48,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:48,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:48,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:48,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:48,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:48,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:48,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 10:21:48,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:21:48,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-13 10:21:48,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:48,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:21:48,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 10:21:48,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:21:48,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:48,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:48,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:48,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:48,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:48,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:48,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:48,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:21:48,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:48,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:48,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:48,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:48,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:48,663 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 10:21:48,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344883711] [2020-10-13 10:21:48,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:48,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:21:48,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888115178] [2020-10-13 10:21:48,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:21:48,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:48,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:21:48,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:48,666 INFO L87 Difference]: Start difference. First operand 89 states and 99 transitions. Second operand 4 states. [2020-10-13 10:21:48,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:48,804 INFO L93 Difference]: Finished difference Result 181 states and 206 transitions. [2020-10-13 10:21:48,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:21:48,805 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-13 10:21:48,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:48,806 INFO L225 Difference]: With dead ends: 181 [2020-10-13 10:21:48,806 INFO L226 Difference]: Without dead ends: 114 [2020-10-13 10:21:48,807 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 10:21:48,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-13 10:21:48,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 102. [2020-10-13 10:21:48,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-13 10:21:48,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 112 transitions. [2020-10-13 10:21:48,813 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 112 transitions. Word has length 24 [2020-10-13 10:21:48,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:48,814 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 112 transitions. [2020-10-13 10:21:48,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:21:48,814 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 112 transitions. [2020-10-13 10:21:48,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-13 10:21:48,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:48,815 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] [2020-10-13 10:21:48,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 10:21:48,816 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:21:48,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:48,816 INFO L82 PathProgramCache]: Analyzing trace with hash -795743119, now seen corresponding path program 1 times [2020-10-13 10:21:48,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:48,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262040275] [2020-10-13 10:21:48,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:48,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:48,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:48,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:48,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:48,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-13 10:21:48,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:48,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-13 10:21:48,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:48,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:21:48,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 10:21:48,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:21:48,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:49,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:49,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:49,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:49,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:49,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:49,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:49,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:49,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:49,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:49,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:49,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:49,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:49,019 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-13 10:21:49,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [262040275] [2020-10-13 10:21:49,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:49,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:21:49,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588360610] [2020-10-13 10:21:49,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:21:49,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:49,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:21:49,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:49,022 INFO L87 Difference]: Start difference. First operand 102 states and 112 transitions. Second operand 4 states. [2020-10-13 10:21:49,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:49,153 INFO L93 Difference]: Finished difference Result 179 states and 198 transitions. [2020-10-13 10:21:49,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:21:49,154 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-13 10:21:49,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:49,155 INFO L225 Difference]: With dead ends: 179 [2020-10-13 10:21:49,155 INFO L226 Difference]: Without dead ends: 99 [2020-10-13 10:21:49,156 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 10:21:49,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-13 10:21:49,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 87. [2020-10-13 10:21:49,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-13 10:21:49,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 92 transitions. [2020-10-13 10:21:49,161 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 92 transitions. Word has length 31 [2020-10-13 10:21:49,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:49,161 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 92 transitions. [2020-10-13 10:21:49,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:21:49,161 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 92 transitions. [2020-10-13 10:21:49,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 10:21:49,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:49,163 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] [2020-10-13 10:21:49,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 10:21:49,163 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:21:49,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:49,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1419476814, now seen corresponding path program 1 times [2020-10-13 10:21:49,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:49,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1755910603] [2020-10-13 10:21:49,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:49,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:49,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:49,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:49,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 10:21:49,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:49,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-13 10:21:49,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:49,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:21:49,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:49,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 10:21:49,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:49,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:49,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:49,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:49,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:49,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:49,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:49,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:49,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:49,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:49,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:49,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:49,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:49,411 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:49,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1755910603] [2020-10-13 10:21:49,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:49,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 10:21:49,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798266623] [2020-10-13 10:21:49,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 10:21:49,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:49,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 10:21:49,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:21:49,414 INFO L87 Difference]: Start difference. First operand 87 states and 92 transitions. Second operand 8 states. [2020-10-13 10:21:49,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:49,610 INFO L93 Difference]: Finished difference Result 87 states and 92 transitions. [2020-10-13 10:21:49,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 10:21:49,611 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-10-13 10:21:49,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:49,612 INFO L225 Difference]: With dead ends: 87 [2020-10-13 10:21:49,612 INFO L226 Difference]: Without dead ends: 85 [2020-10-13 10:21:49,612 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:21:49,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-13 10:21:49,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-10-13 10:21:49,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-13 10:21:49,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 90 transitions. [2020-10-13 10:21:49,617 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 90 transitions. Word has length 32 [2020-10-13 10:21:49,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:49,617 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 90 transitions. [2020-10-13 10:21:49,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 10:21:49,617 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 90 transitions. [2020-10-13 10:21:49,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-13 10:21:49,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:49,618 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 10:21:49,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 10:21:49,619 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:21:49,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:49,619 INFO L82 PathProgramCache]: Analyzing trace with hash 922997175, now seen corresponding path program 1 times [2020-10-13 10:21:49,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:49,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1678688103] [2020-10-13 10:21:49,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:49,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:49,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:49,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:49,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 10:21:49,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:49,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-13 10:21:49,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:49,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:21:49,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:49,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 10:21:49,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:49,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:49,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:49,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:49,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:49,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:49,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:49,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:49,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:49,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:49,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:49,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:49,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:49,843 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 10:21:49,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1678688103] [2020-10-13 10:21:49,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:49,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 10:21:49,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455135928] [2020-10-13 10:21:49,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 10:21:49,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:49,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 10:21:49,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:21:49,845 INFO L87 Difference]: Start difference. First operand 85 states and 90 transitions. Second operand 8 states. [2020-10-13 10:21:50,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:50,129 INFO L93 Difference]: Finished difference Result 108 states and 115 transitions. [2020-10-13 10:21:50,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 10:21:50,130 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-10-13 10:21:50,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:50,131 INFO L225 Difference]: With dead ends: 108 [2020-10-13 10:21:50,131 INFO L226 Difference]: Without dead ends: 106 [2020-10-13 10:21:50,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:21:50,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-13 10:21:50,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 91. [2020-10-13 10:21:50,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-13 10:21:50,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 97 transitions. [2020-10-13 10:21:50,139 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 97 transitions. Word has length 33 [2020-10-13 10:21:50,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:50,140 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 97 transitions. [2020-10-13 10:21:50,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 10:21:50,140 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 97 transitions. [2020-10-13 10:21:50,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-13 10:21:50,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:50,141 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] [2020-10-13 10:21:50,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 10:21:50,141 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:21:50,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:50,142 INFO L82 PathProgramCache]: Analyzing trace with hash 699517325, now seen corresponding path program 1 times [2020-10-13 10:21:50,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:50,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566435202] [2020-10-13 10:21:50,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:50,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:50,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:50,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:50,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:50,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:50,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-13 10:21:50,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:21:50,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-13 10:21:50,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:50,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:21:50,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 10:21:50,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 10:21:50,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:50,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:50,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:50,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:50,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:50,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:50,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:50,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:50,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:50,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:50,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:50,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:50,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:50,495 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-13 10:21:50,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566435202] [2020-10-13 10:21:50,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:50,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:21:50,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693322244] [2020-10-13 10:21:50,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:21:50,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:50,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:21:50,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:50,497 INFO L87 Difference]: Start difference. First operand 91 states and 97 transitions. Second operand 4 states. [2020-10-13 10:21:50,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:50,686 INFO L93 Difference]: Finished difference Result 152 states and 164 transitions. [2020-10-13 10:21:50,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:21:50,687 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-13 10:21:50,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:50,688 INFO L225 Difference]: With dead ends: 152 [2020-10-13 10:21:50,688 INFO L226 Difference]: Without dead ends: 117 [2020-10-13 10:21:50,689 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 10:21:50,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-13 10:21:50,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 102. [2020-10-13 10:21:50,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-13 10:21:50,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 109 transitions. [2020-10-13 10:21:50,695 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 109 transitions. Word has length 33 [2020-10-13 10:21:50,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:50,695 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 109 transitions. [2020-10-13 10:21:50,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:21:50,695 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 109 transitions. [2020-10-13 10:21:50,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-13 10:21:50,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:50,697 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] [2020-10-13 10:21:50,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 10:21:50,697 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:21:50,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:50,698 INFO L82 PathProgramCache]: Analyzing trace with hash -610162986, now seen corresponding path program 1 times [2020-10-13 10:21:50,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:50,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [904545214] [2020-10-13 10:21:50,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:50,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:50,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:50,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:50,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 10:21:50,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:50,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-13 10:21:50,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:50,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:21:50,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:50,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 10:21:50,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:50,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:50,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:50,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:50,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:50,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:50,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:50,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:50,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:50,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:50,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:50,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:50,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:50,987 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:50,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [904545214] [2020-10-13 10:21:50,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:50,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 10:21:50,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247856682] [2020-10-13 10:21:50,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 10:21:50,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:50,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 10:21:50,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:21:50,989 INFO L87 Difference]: Start difference. First operand 102 states and 109 transitions. Second operand 8 states. [2020-10-13 10:21:51,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:51,247 INFO L93 Difference]: Finished difference Result 128 states and 136 transitions. [2020-10-13 10:21:51,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 10:21:51,248 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-10-13 10:21:51,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:51,249 INFO L225 Difference]: With dead ends: 128 [2020-10-13 10:21:51,249 INFO L226 Difference]: Without dead ends: 126 [2020-10-13 10:21:51,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:21:51,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-13 10:21:51,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 109. [2020-10-13 10:21:51,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-13 10:21:51,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 116 transitions. [2020-10-13 10:21:51,255 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 116 transitions. Word has length 35 [2020-10-13 10:21:51,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:51,255 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 116 transitions. [2020-10-13 10:21:51,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 10:21:51,256 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 116 transitions. [2020-10-13 10:21:51,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-13 10:21:51,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:51,256 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:51,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 10:21:51,257 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:21:51,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:51,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1026206209, now seen corresponding path program 1 times [2020-10-13 10:21:51,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:51,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630942386] [2020-10-13 10:21:51,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:51,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:51,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:51,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:51,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:51,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:51,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:51,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:51,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:52,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:52,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-13 10:21:52,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 10:21:52,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 806 [2020-10-13 10:21:52,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:52,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:21:52,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 10:21:52,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:21:52,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:52,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:52,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:52,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:52,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:52,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:52,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:52,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:52,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:52,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:52,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:52,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:52,153 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-13 10:21:52,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630942386] [2020-10-13 10:21:52,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:52,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 10:21:52,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849519720] [2020-10-13 10:21:52,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:21:52,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:52,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:21:52,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:21:52,157 INFO L87 Difference]: Start difference. First operand 109 states and 116 transitions. Second operand 6 states. [2020-10-13 10:21:52,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:52,329 INFO L93 Difference]: Finished difference Result 128 states and 137 transitions. [2020-10-13 10:21:52,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 10:21:52,330 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2020-10-13 10:21:52,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:52,331 INFO L225 Difference]: With dead ends: 128 [2020-10-13 10:21:52,332 INFO L226 Difference]: Without dead ends: 109 [2020-10-13 10:21:52,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:21:52,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-13 10:21:52,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-10-13 10:21:52,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-13 10:21:52,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 114 transitions. [2020-10-13 10:21:52,344 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 114 transitions. Word has length 41 [2020-10-13 10:21:52,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:52,345 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 114 transitions. [2020-10-13 10:21:52,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:21:52,345 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 114 transitions. [2020-10-13 10:21:52,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-13 10:21:52,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:52,346 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:52,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 10:21:52,347 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:21:52,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:52,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1727270787, now seen corresponding path program 1 times [2020-10-13 10:21:52,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:52,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856778439] [2020-10-13 10:21:52,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:52,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:52,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:52,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:52,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-13 10:21:52,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:52,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-13 10:21:52,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:52,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:21:52,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:52,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 10:21:52,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:52,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:52,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:52,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:52,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:52,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:52,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:52,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:52,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:52,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:52,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:52,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:52,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:52,748 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:52,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856778439] [2020-10-13 10:21:52,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:52,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:21:52,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642715804] [2020-10-13 10:21:52,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:21:52,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:52,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:21:52,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:21:52,751 INFO L87 Difference]: Start difference. First operand 109 states and 114 transitions. Second operand 9 states. [2020-10-13 10:21:53,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:53,137 INFO L93 Difference]: Finished difference Result 123 states and 128 transitions. [2020-10-13 10:21:53,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 10:21:53,138 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 41 [2020-10-13 10:21:53,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:53,139 INFO L225 Difference]: With dead ends: 123 [2020-10-13 10:21:53,139 INFO L226 Difference]: Without dead ends: 92 [2020-10-13 10:21:53,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:21:53,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-13 10:21:53,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-10-13 10:21:53,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-13 10:21:53,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2020-10-13 10:21:53,150 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 41 [2020-10-13 10:21:53,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:53,151 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 96 transitions. [2020-10-13 10:21:53,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:21:53,152 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions. [2020-10-13 10:21:53,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-13 10:21:53,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:53,154 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-10-13 10:21:53,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 10:21:53,155 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:21:53,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:53,155 INFO L82 PathProgramCache]: Analyzing trace with hash -872603692, now seen corresponding path program 1 times [2020-10-13 10:21:53,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:53,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545303636] [2020-10-13 10:21:53,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:53,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:53,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:53,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:53,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 10:21:53,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:53,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 364 [2020-10-13 10:21:53,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:53,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:21:53,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:53,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-13 10:21:53,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:53,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:53,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:53,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:53,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:53,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:53,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:53,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:53,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:53,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:53,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:53,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:53,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:53,729 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:53,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545303636] [2020-10-13 10:21:53,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:53,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:21:53,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409556145] [2020-10-13 10:21:53,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:21:53,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:53,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:21:53,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:21:53,735 INFO L87 Difference]: Start difference. First operand 92 states and 96 transitions. Second operand 9 states. [2020-10-13 10:21:53,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:53,917 INFO L93 Difference]: Finished difference Result 92 states and 96 transitions. [2020-10-13 10:21:53,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 10:21:53,917 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2020-10-13 10:21:53,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:53,918 INFO L225 Difference]: With dead ends: 92 [2020-10-13 10:21:53,918 INFO L226 Difference]: Without dead ends: 90 [2020-10-13 10:21:53,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:21:53,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-13 10:21:53,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-10-13 10:21:53,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-13 10:21:53,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 94 transitions. [2020-10-13 10:21:53,926 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 94 transitions. Word has length 42 [2020-10-13 10:21:53,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:53,926 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 94 transitions. [2020-10-13 10:21:53,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:21:53,926 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 94 transitions. [2020-10-13 10:21:53,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 10:21:53,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:53,927 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] [2020-10-13 10:21:53,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 10:21:53,928 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:21:53,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:53,928 INFO L82 PathProgramCache]: Analyzing trace with hash 869745041, now seen corresponding path program 1 times [2020-10-13 10:21:53,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:53,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714953514] [2020-10-13 10:21:53,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:53,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:53,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:54,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:54,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 10:21:54,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:54,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-13 10:21:54,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:54,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:21:54,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:54,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 10:21:54,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:54,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:54,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:54,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:54,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:54,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:54,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:54,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:21:54,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:54,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:54,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:54,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:54,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:54,428 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:54,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714953514] [2020-10-13 10:21:54,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:54,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 10:21:54,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246066953] [2020-10-13 10:21:54,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 10:21:54,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:54,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 10:21:54,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:21:54,432 INFO L87 Difference]: Start difference. First operand 90 states and 94 transitions. Second operand 10 states. [2020-10-13 10:21:54,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:54,746 INFO L93 Difference]: Finished difference Result 113 states and 117 transitions. [2020-10-13 10:21:54,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 10:21:54,746 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2020-10-13 10:21:54,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:54,747 INFO L225 Difference]: With dead ends: 113 [2020-10-13 10:21:54,747 INFO L226 Difference]: Without dead ends: 111 [2020-10-13 10:21:54,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:21:54,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-13 10:21:54,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 99. [2020-10-13 10:21:54,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-13 10:21:54,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2020-10-13 10:21:54,753 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 44 [2020-10-13 10:21:54,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:54,754 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2020-10-13 10:21:54,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 10:21:54,754 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2020-10-13 10:21:54,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 10:21:54,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:54,754 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-10-13 10:21:54,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 10:21:54,755 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:21:54,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:54,755 INFO L82 PathProgramCache]: Analyzing trace with hash 410027869, now seen corresponding path program 1 times [2020-10-13 10:21:54,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:54,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1419626099] [2020-10-13 10:21:54,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:54,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:54,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:54,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:55,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:55,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 10:21:55,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:55,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-13 10:21:55,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:55,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:21:55,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 10:21:55,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 10:21:55,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:55,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:55,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:55,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:55,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:55,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:55,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:55,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:55,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:55,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:55,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:55,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:55,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:55,069 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-13 10:21:55,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1419626099] [2020-10-13 10:21:55,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:55,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:21:55,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400780977] [2020-10-13 10:21:55,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:21:55,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:55,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:21:55,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:55,071 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand 4 states. [2020-10-13 10:21:55,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:55,189 INFO L93 Difference]: Finished difference Result 123 states and 127 transitions. [2020-10-13 10:21:55,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:21:55,190 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-10-13 10:21:55,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:55,191 INFO L225 Difference]: With dead ends: 123 [2020-10-13 10:21:55,191 INFO L226 Difference]: Without dead ends: 101 [2020-10-13 10:21:55,191 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 10:21:55,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-13 10:21:55,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 88. [2020-10-13 10:21:55,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-13 10:21:55,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 91 transitions. [2020-10-13 10:21:55,196 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 91 transitions. Word has length 44 [2020-10-13 10:21:55,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:55,197 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 91 transitions. [2020-10-13 10:21:55,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:21:55,197 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 91 transitions. [2020-10-13 10:21:55,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-13 10:21:55,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:55,198 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-10-13 10:21:55,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 10:21:55,198 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:21:55,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:55,198 INFO L82 PathProgramCache]: Analyzing trace with hash -479677976, now seen corresponding path program 1 times [2020-10-13 10:21:55,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:55,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041431765] [2020-10-13 10:21:55,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:55,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:55,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:55,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:55,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:55,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 10:21:55,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:21:55,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-10-13 10:21:55,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:55,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:21:55,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 10:21:55,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 10:21:55,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:55,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:55,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:55,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:55,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:55,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:55,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:55,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:55,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:55,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:55,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:55,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:55,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:55,601 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-13 10:21:55,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041431765] [2020-10-13 10:21:55,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:21:55,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:21:55,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563966746] [2020-10-13 10:21:55,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:21:55,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:55,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:21:55,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:21:55,605 INFO L87 Difference]: Start difference. First operand 88 states and 91 transitions. Second operand 4 states. [2020-10-13 10:21:55,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:55,736 INFO L93 Difference]: Finished difference Result 112 states and 115 transitions. [2020-10-13 10:21:55,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:21:55,736 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-10-13 10:21:55,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:55,737 INFO L225 Difference]: With dead ends: 112 [2020-10-13 10:21:55,737 INFO L226 Difference]: Without dead ends: 101 [2020-10-13 10:21:55,738 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 10:21:55,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-13 10:21:55,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 88. [2020-10-13 10:21:55,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-13 10:21:55,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 90 transitions. [2020-10-13 10:21:55,743 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 90 transitions. Word has length 45 [2020-10-13 10:21:55,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:55,744 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 90 transitions. [2020-10-13 10:21:55,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:21:55,744 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 90 transitions. [2020-10-13 10:21:55,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-13 10:21:55,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:55,744 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-10-13 10:21:55,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 10:21:55,745 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:21:55,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:55,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1704581452, now seen corresponding path program 1 times [2020-10-13 10:21:55,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:55,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362009087] [2020-10-13 10:21:55,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:55,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:55,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:56,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:56,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-13 10:21:56,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:56,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-13 10:21:56,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:56,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:21:56,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:56,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 10:21:56,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:56,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:56,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:56,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:56,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:56,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:56,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:56,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:56,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:56,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:56,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:56,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:56,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:56,161 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:56,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362009087] [2020-10-13 10:21:56,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:56,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:21:56,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490251010] [2020-10-13 10:21:56,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:21:56,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:56,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:21:56,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:21:56,163 INFO L87 Difference]: Start difference. First operand 88 states and 90 transitions. Second operand 9 states. [2020-10-13 10:21:56,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:56,361 INFO L93 Difference]: Finished difference Result 88 states and 90 transitions. [2020-10-13 10:21:56,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 10:21:56,361 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-10-13 10:21:56,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:56,362 INFO L225 Difference]: With dead ends: 88 [2020-10-13 10:21:56,362 INFO L226 Difference]: Without dead ends: 86 [2020-10-13 10:21:56,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:21:56,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-13 10:21:56,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-10-13 10:21:56,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-13 10:21:56,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 88 transitions. [2020-10-13 10:21:56,370 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 88 transitions. Word has length 45 [2020-10-13 10:21:56,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:56,371 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 88 transitions. [2020-10-13 10:21:56,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:21:56,374 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 88 transitions. [2020-10-13 10:21:56,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 10:21:56,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:56,374 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-10-13 10:21:56,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 10:21:56,375 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:21:56,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:56,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1791840934, now seen corresponding path program 1 times [2020-10-13 10:21:56,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:56,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054393348] [2020-10-13 10:21:56,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:56,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:56,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:56,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:56,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 10:21:56,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:56,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-13 10:21:56,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:56,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:21:56,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:56,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 10:21:56,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:56,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:56,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:56,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:56,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:56,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:56,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:56,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:56,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:56,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:56,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:56,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:56,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:56,867 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:56,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054393348] [2020-10-13 10:21:56,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:56,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:21:56,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765578919] [2020-10-13 10:21:56,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:21:56,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:56,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:21:56,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:21:56,869 INFO L87 Difference]: Start difference. First operand 86 states and 88 transitions. Second operand 9 states. [2020-10-13 10:21:57,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:57,233 INFO L93 Difference]: Finished difference Result 129 states and 132 transitions. [2020-10-13 10:21:57,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 10:21:57,234 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2020-10-13 10:21:57,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:57,236 INFO L225 Difference]: With dead ends: 129 [2020-10-13 10:21:57,236 INFO L226 Difference]: Without dead ends: 127 [2020-10-13 10:21:57,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:21:57,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-13 10:21:57,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 110. [2020-10-13 10:21:57,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-13 10:21:57,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 113 transitions. [2020-10-13 10:21:57,246 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 113 transitions. Word has length 48 [2020-10-13 10:21:57,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:57,247 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 113 transitions. [2020-10-13 10:21:57,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:21:57,247 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 113 transitions. [2020-10-13 10:21:57,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-13 10:21:57,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:57,248 INFO L422 BasicCegarLoop]: trace histogram [4, 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 10:21:57,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 10:21:57,249 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:21:57,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:57,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1411094306, now seen corresponding path program 1 times [2020-10-13 10:21:57,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:57,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [627485142] [2020-10-13 10:21:57,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:57,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:57,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:57,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:57,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 10:21:57,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:57,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-13 10:21:57,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:57,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:21:57,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:57,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 10:21:57,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:57,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:57,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:57,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:57,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:57,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:57,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:57,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:57,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:57,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:57,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:57,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:57,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:57,799 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:57,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [627485142] [2020-10-13 10:21:57,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:57,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:21:57,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118090690] [2020-10-13 10:21:57,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:21:57,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:57,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:21:57,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:21:57,801 INFO L87 Difference]: Start difference. First operand 110 states and 113 transitions. Second operand 9 states. [2020-10-13 10:21:58,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:58,169 INFO L93 Difference]: Finished difference Result 127 states and 130 transitions. [2020-10-13 10:21:58,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 10:21:58,170 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-10-13 10:21:58,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:58,171 INFO L225 Difference]: With dead ends: 127 [2020-10-13 10:21:58,172 INFO L226 Difference]: Without dead ends: 125 [2020-10-13 10:21:58,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:21:58,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-13 10:21:58,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 113. [2020-10-13 10:21:58,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-13 10:21:58,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 116 transitions. [2020-10-13 10:21:58,178 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 116 transitions. Word has length 51 [2020-10-13 10:21:58,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:58,178 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 116 transitions. [2020-10-13 10:21:58,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:21:58,178 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 116 transitions. [2020-10-13 10:21:58,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 10:21:58,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:58,179 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] [2020-10-13 10:21:58,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 10:21:58,179 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:21:58,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:58,180 INFO L82 PathProgramCache]: Analyzing trace with hash -819002019, now seen corresponding path program 1 times [2020-10-13 10:21:58,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:58,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147203180] [2020-10-13 10:21:58,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:58,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:58,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:58,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 10:21:58,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:58,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-10-13 10:21:58,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:58,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:21:58,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:58,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 10:21:58,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:58,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:58,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:58,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:58,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:58,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:58,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:58,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:21:58,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:58,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:58,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:58,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:58,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:21:58,652 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:58,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147203180] [2020-10-13 10:21:58,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:58,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 10:21:58,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780333491] [2020-10-13 10:21:58,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 10:21:58,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:58,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 10:21:58,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:21:58,658 INFO L87 Difference]: Start difference. First operand 113 states and 116 transitions. Second operand 10 states. [2020-10-13 10:21:58,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:21:58,993 INFO L93 Difference]: Finished difference Result 135 states and 138 transitions. [2020-10-13 10:21:58,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:21:58,993 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-10-13 10:21:58,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:21:58,994 INFO L225 Difference]: With dead ends: 135 [2020-10-13 10:21:58,994 INFO L226 Difference]: Without dead ends: 133 [2020-10-13 10:21:58,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:21:58,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-13 10:21:59,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 121. [2020-10-13 10:21:59,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-13 10:21:59,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 124 transitions. [2020-10-13 10:21:59,012 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 124 transitions. Word has length 52 [2020-10-13 10:21:59,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:21:59,012 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 124 transitions. [2020-10-13 10:21:59,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 10:21:59,012 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 124 transitions. [2020-10-13 10:21:59,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 10:21:59,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:21:59,013 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:21:59,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 10:21:59,014 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:21:59,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:21:59,014 INFO L82 PathProgramCache]: Analyzing trace with hash 421512575, now seen corresponding path program 2 times [2020-10-13 10:21:59,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:21:59,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793606435] [2020-10-13 10:21:59,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:21:59,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:59,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:59,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:59,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 10:21:59,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:59,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 469 [2020-10-13 10:21:59,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:59,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:21:59,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:21:59,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-13 10:21:59,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:59,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:21:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:21:59,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:21:59,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:21:59,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:21:59,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:21:59,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:21:59,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:21:59,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:21:59,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:21:59,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:21:59,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:21:59,924 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:21:59,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793606435] [2020-10-13 10:21:59,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:21:59,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 10:21:59,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302154972] [2020-10-13 10:21:59,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 10:21:59,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:21:59,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 10:21:59,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:21:59,928 INFO L87 Difference]: Start difference. First operand 121 states and 124 transitions. Second operand 10 states. [2020-10-13 10:22:00,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:00,407 INFO L93 Difference]: Finished difference Result 131 states and 134 transitions. [2020-10-13 10:22:00,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 10:22:00,408 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-10-13 10:22:00,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:00,410 INFO L225 Difference]: With dead ends: 131 [2020-10-13 10:22:00,410 INFO L226 Difference]: Without dead ends: 129 [2020-10-13 10:22:00,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:22:00,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-13 10:22:00,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 119. [2020-10-13 10:22:00,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-13 10:22:00,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 122 transitions. [2020-10-13 10:22:00,424 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 122 transitions. Word has length 57 [2020-10-13 10:22:00,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:00,425 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 122 transitions. [2020-10-13 10:22:00,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 10:22:00,425 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 122 transitions. [2020-10-13 10:22:00,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-13 10:22:00,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:00,437 INFO L422 BasicCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:00,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 10:22:00,438 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:22:00,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:00,439 INFO L82 PathProgramCache]: Analyzing trace with hash -456576236, now seen corresponding path program 1 times [2020-10-13 10:22:00,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:00,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714107879] [2020-10-13 10:22:00,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:00,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:00,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:00,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:00,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 10:22:00,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:00,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 376 [2020-10-13 10:22:00,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:00,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:22:00,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:00,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 10:22:00,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:01,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:01,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:01,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:01,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:01,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:01,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:01,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:01,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:01,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:01,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:01,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:01,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:01,117 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:01,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714107879] [2020-10-13 10:22:01,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:01,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:22:01,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861469776] [2020-10-13 10:22:01,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:22:01,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:01,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:22:01,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:22:01,119 INFO L87 Difference]: Start difference. First operand 119 states and 122 transitions. Second operand 11 states. [2020-10-13 10:22:01,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:01,637 INFO L93 Difference]: Finished difference Result 141 states and 144 transitions. [2020-10-13 10:22:01,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:22:01,638 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 59 [2020-10-13 10:22:01,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:01,640 INFO L225 Difference]: With dead ends: 141 [2020-10-13 10:22:01,640 INFO L226 Difference]: Without dead ends: 139 [2020-10-13 10:22:01,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:22:01,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-13 10:22:01,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 121. [2020-10-13 10:22:01,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-13 10:22:01,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 124 transitions. [2020-10-13 10:22:01,652 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 124 transitions. Word has length 59 [2020-10-13 10:22:01,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:01,653 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 124 transitions. [2020-10-13 10:22:01,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:22:01,653 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 124 transitions. [2020-10-13 10:22:01,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 10:22:01,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:01,655 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2020-10-13 10:22:01,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 10:22:01,656 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:22:01,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:01,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1788624169, now seen corresponding path program 2 times [2020-10-13 10:22:01,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:01,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480562189] [2020-10-13 10:22:01,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:01,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:01,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:01,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:01,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 10:22:01,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:01,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-10-13 10:22:01,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:01,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:22:01,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:01,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 10:22:01,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:02,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:02,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:02,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:02,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:02,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:02,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:02,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:22:02,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:02,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:02,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:02,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:02,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:02,158 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 8 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:02,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480562189] [2020-10-13 10:22:02,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:02,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:22:02,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48107102] [2020-10-13 10:22:02,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:22:02,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:02,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:22:02,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:22:02,161 INFO L87 Difference]: Start difference. First operand 121 states and 124 transitions. Second operand 11 states. [2020-10-13 10:22:02,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:02,573 INFO L93 Difference]: Finished difference Result 141 states and 144 transitions. [2020-10-13 10:22:02,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:22:02,573 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-10-13 10:22:02,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:02,574 INFO L225 Difference]: With dead ends: 141 [2020-10-13 10:22:02,574 INFO L226 Difference]: Without dead ends: 99 [2020-10-13 10:22:02,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:22:02,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-13 10:22:02,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2020-10-13 10:22:02,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-13 10:22:02,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 101 transitions. [2020-10-13 10:22:02,585 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 101 transitions. Word has length 60 [2020-10-13 10:22:02,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:02,586 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 101 transitions. [2020-10-13 10:22:02,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:22:02,586 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 101 transitions. [2020-10-13 10:22:02,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 10:22:02,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:02,587 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:02,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 10:22:02,588 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:22:02,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:02,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1199088795, now seen corresponding path program 2 times [2020-10-13 10:22:02,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:02,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128439023] [2020-10-13 10:22:02,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:02,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:02,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:03,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:03,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 10:22:03,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:03,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-10-13 10:22:03,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:03,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:22:03,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:03,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 10:22:03,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:03,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:03,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:03,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:03,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:03,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:03,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:03,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:03,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:03,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:03,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:03,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:03,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:03,342 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:03,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128439023] [2020-10-13 10:22:03,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:03,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:22:03,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032212246] [2020-10-13 10:22:03,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:22:03,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:03,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:22:03,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:22:03,345 INFO L87 Difference]: Start difference. First operand 99 states and 101 transitions. Second operand 11 states. [2020-10-13 10:22:03,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:03,779 INFO L93 Difference]: Finished difference Result 140 states and 143 transitions. [2020-10-13 10:22:03,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 10:22:03,780 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-10-13 10:22:03,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:03,781 INFO L225 Difference]: With dead ends: 140 [2020-10-13 10:22:03,781 INFO L226 Difference]: Without dead ends: 138 [2020-10-13 10:22:03,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:22:03,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-13 10:22:03,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 126. [2020-10-13 10:22:03,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-13 10:22:03,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 129 transitions. [2020-10-13 10:22:03,789 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 129 transitions. Word has length 60 [2020-10-13 10:22:03,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:03,789 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 129 transitions. [2020-10-13 10:22:03,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:22:03,790 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 129 transitions. [2020-10-13 10:22:03,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 10:22:03,791 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:03,791 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:03,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 10:22:03,791 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:22:03,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:03,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1252312032, now seen corresponding path program 1 times [2020-10-13 10:22:03,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:03,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2525047] [2020-10-13 10:22:03,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:03,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:03,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:04,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:04,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 10:22:04,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:04,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 320 [2020-10-13 10:22:04,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:04,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:22:04,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:04,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-13 10:22:04,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:04,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:04,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:04,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:04,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:04,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:04,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:04,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:22:04,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:04,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:04,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:04,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:04,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:04,505 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:04,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2525047] [2020-10-13 10:22:04,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:04,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 10:22:04,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958061967] [2020-10-13 10:22:04,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:22:04,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:04,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:22:04,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:22:04,507 INFO L87 Difference]: Start difference. First operand 126 states and 129 transitions. Second operand 12 states. [2020-10-13 10:22:04,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:04,952 INFO L93 Difference]: Finished difference Result 148 states and 151 transitions. [2020-10-13 10:22:04,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 10:22:04,952 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 67 [2020-10-13 10:22:04,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:04,953 INFO L225 Difference]: With dead ends: 148 [2020-10-13 10:22:04,953 INFO L226 Difference]: Without dead ends: 146 [2020-10-13 10:22:04,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:22:04,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-13 10:22:04,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 134. [2020-10-13 10:22:04,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-13 10:22:04,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 137 transitions. [2020-10-13 10:22:04,963 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 137 transitions. Word has length 67 [2020-10-13 10:22:04,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:04,963 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 137 transitions. [2020-10-13 10:22:04,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:22:04,963 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 137 transitions. [2020-10-13 10:22:04,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 10:22:04,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:04,964 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:04,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 10:22:04,964 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:22:04,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:04,965 INFO L82 PathProgramCache]: Analyzing trace with hash 275820187, now seen corresponding path program 2 times [2020-10-13 10:22:04,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:04,965 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301260679] [2020-10-13 10:22:04,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:04,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:05,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:05,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:05,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-13 10:22:05,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:05,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-10-13 10:22:05,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:05,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:22:05,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:05,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 10:22:05,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:05,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:05,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:05,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:05,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:05,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:05,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:05,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:05,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:05,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:05,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:05,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:05,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:05,872 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:05,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301260679] [2020-10-13 10:22:05,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:05,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 10:22:05,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945140259] [2020-10-13 10:22:05,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:22:05,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:05,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:22:05,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:22:05,874 INFO L87 Difference]: Start difference. First operand 134 states and 137 transitions. Second operand 12 states. [2020-10-13 10:22:06,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:06,166 INFO L93 Difference]: Finished difference Result 144 states and 147 transitions. [2020-10-13 10:22:06,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 10:22:06,166 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 68 [2020-10-13 10:22:06,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:06,167 INFO L225 Difference]: With dead ends: 144 [2020-10-13 10:22:06,167 INFO L226 Difference]: Without dead ends: 142 [2020-10-13 10:22:06,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:22:06,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-13 10:22:06,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 134. [2020-10-13 10:22:06,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-13 10:22:06,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 137 transitions. [2020-10-13 10:22:06,176 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 137 transitions. Word has length 68 [2020-10-13 10:22:06,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:06,177 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 137 transitions. [2020-10-13 10:22:06,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:22:06,177 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 137 transitions. [2020-10-13 10:22:06,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-13 10:22:06,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:06,178 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 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] [2020-10-13 10:22:06,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 10:22:06,178 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:22:06,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:06,179 INFO L82 PathProgramCache]: Analyzing trace with hash 30363838, now seen corresponding path program 3 times [2020-10-13 10:22:06,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:06,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1697385378] [2020-10-13 10:22:06,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:06,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:06,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:06,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:06,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 10:22:06,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:06,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 521 [2020-10-13 10:22:06,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:06,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:22:06,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:06,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 10:22:06,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:07,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:07,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:07,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:07,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:07,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:07,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:07,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:07,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:07,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:07,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:07,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:07,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:07,131 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:07,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1697385378] [2020-10-13 10:22:07,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:07,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 10:22:07,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846164702] [2020-10-13 10:22:07,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:22:07,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:07,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:22:07,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:22:07,135 INFO L87 Difference]: Start difference. First operand 134 states and 137 transitions. Second operand 12 states. [2020-10-13 10:22:07,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:07,639 INFO L93 Difference]: Finished difference Result 134 states and 137 transitions. [2020-10-13 10:22:07,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 10:22:07,639 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 69 [2020-10-13 10:22:07,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:07,641 INFO L225 Difference]: With dead ends: 134 [2020-10-13 10:22:07,641 INFO L226 Difference]: Without dead ends: 132 [2020-10-13 10:22:07,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:22:07,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-13 10:22:07,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 105. [2020-10-13 10:22:07,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-13 10:22:07,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 107 transitions. [2020-10-13 10:22:07,649 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 107 transitions. Word has length 69 [2020-10-13 10:22:07,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:07,650 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 107 transitions. [2020-10-13 10:22:07,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:22:07,650 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 107 transitions. [2020-10-13 10:22:07,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-13 10:22:07,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:07,651 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:07,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 10:22:07,653 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:22:07,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:07,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1249429676, now seen corresponding path program 2 times [2020-10-13 10:22:07,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:07,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113283045] [2020-10-13 10:22:07,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:07,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:07,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:07,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:08,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:08,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 10:22:08,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:22:08,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 801 [2020-10-13 10:22:08,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:08,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:22:08,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-13 10:22:08,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 10:22:08,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:08,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:08,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:08,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:08,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:08,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:08,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:08,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:08,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:08,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:08,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:08,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:08,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:08,574 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-13 10:22:08,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113283045] [2020-10-13 10:22:08,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:08,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:22:08,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330786955] [2020-10-13 10:22:08,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:22:08,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:08,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:22:08,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:22:08,577 INFO L87 Difference]: Start difference. First operand 105 states and 107 transitions. Second operand 9 states. [2020-10-13 10:22:08,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:08,846 INFO L93 Difference]: Finished difference Result 133 states and 135 transitions. [2020-10-13 10:22:08,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 10:22:08,847 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 75 [2020-10-13 10:22:08,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:08,848 INFO L225 Difference]: With dead ends: 133 [2020-10-13 10:22:08,848 INFO L226 Difference]: Without dead ends: 131 [2020-10-13 10:22:08,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:22:08,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-13 10:22:08,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 127. [2020-10-13 10:22:08,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-13 10:22:08,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 130 transitions. [2020-10-13 10:22:08,863 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 130 transitions. Word has length 75 [2020-10-13 10:22:08,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:08,863 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 130 transitions. [2020-10-13 10:22:08,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:22:08,864 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 130 transitions. [2020-10-13 10:22:08,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-13 10:22:08,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:08,865 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:08,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 10:22:08,865 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:22:08,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:08,866 INFO L82 PathProgramCache]: Analyzing trace with hash -256391065, now seen corresponding path program 3 times [2020-10-13 10:22:08,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:08,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [261543711] [2020-10-13 10:22:08,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:08,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:08,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:09,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:09,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 10:22:09,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:09,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 443 [2020-10-13 10:22:09,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:09,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:22:09,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:09,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 10:22:09,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:09,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:09,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:09,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:09,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:09,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:09,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:09,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:09,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:09,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:09,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:09,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:22:09,730 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:09,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [261543711] [2020-10-13 10:22:09,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:09,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:22:09,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592624781] [2020-10-13 10:22:09,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:22:09,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:09,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:22:09,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:22:09,733 INFO L87 Difference]: Start difference. First operand 127 states and 130 transitions. Second operand 13 states. [2020-10-13 10:22:10,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:10,132 INFO L93 Difference]: Finished difference Result 129 states and 131 transitions. [2020-10-13 10:22:10,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 10:22:10,132 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 76 [2020-10-13 10:22:10,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:10,133 INFO L225 Difference]: With dead ends: 129 [2020-10-13 10:22:10,133 INFO L226 Difference]: Without dead ends: 127 [2020-10-13 10:22:10,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:22:10,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-13 10:22:10,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 84. [2020-10-13 10:22:10,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-13 10:22:10,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2020-10-13 10:22:10,143 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 76 [2020-10-13 10:22:10,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:10,143 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2020-10-13 10:22:10,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:22:10,143 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2020-10-13 10:22:10,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-13 10:22:10,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:10,144 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1] [2020-10-13 10:22:10,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 10:22:10,145 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:22:10,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:10,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1855013240, now seen corresponding path program 4 times [2020-10-13 10:22:10,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:10,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [493736196] [2020-10-13 10:22:10,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:10,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:10,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:10,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:10,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 10:22:10,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:10,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 439 [2020-10-13 10:22:10,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:10,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:22:10,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:10,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-13 10:22:10,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:22:10,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:10,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:10,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:10,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:10,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:10,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:10,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:22:10,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:10,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:10,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:10,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:10,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:22:11,011 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 12 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:11,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [493736196] [2020-10-13 10:22:11,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:11,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:22:11,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704743102] [2020-10-13 10:22:11,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:22:11,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:11,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:22:11,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:22:11,018 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand 13 states. [2020-10-13 10:22:11,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:11,697 INFO L93 Difference]: Finished difference Result 149 states and 151 transitions. [2020-10-13 10:22:11,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 10:22:11,697 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 83 [2020-10-13 10:22:11,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:11,698 INFO L225 Difference]: With dead ends: 149 [2020-10-13 10:22:11,698 INFO L226 Difference]: Without dead ends: 93 [2020-10-13 10:22:11,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:22:11,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-13 10:22:11,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-10-13 10:22:11,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-13 10:22:11,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2020-10-13 10:22:11,706 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 83 [2020-10-13 10:22:11,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:11,707 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2020-10-13 10:22:11,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:22:11,707 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2020-10-13 10:22:11,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-13 10:22:11,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:11,708 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:11,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 10:22:11,709 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:22:11,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:11,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1078962177, now seen corresponding path program 5 times [2020-10-13 10:22:11,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:11,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449205664] [2020-10-13 10:22:11,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:11,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:11,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:12,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:12,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 10:22:12,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:12,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 575 [2020-10-13 10:22:12,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:12,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 10:22:12,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:12,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-13 10:22:12,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:12,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:12,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:12,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:12,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:12,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:12,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:22:12,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:12,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:12,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:12,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:12,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:22:12,962 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:12,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449205664] [2020-10-13 10:22:12,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:12,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 10:22:12,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68760900] [2020-10-13 10:22:12,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 10:22:12,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:12,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 10:22:12,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:22:12,969 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand 14 states. [2020-10-13 10:22:13,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:13,908 INFO L93 Difference]: Finished difference Result 166 states and 168 transitions. [2020-10-13 10:22:13,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 10:22:13,908 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 92 [2020-10-13 10:22:13,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:13,910 INFO L225 Difference]: With dead ends: 166 [2020-10-13 10:22:13,910 INFO L226 Difference]: Without dead ends: 164 [2020-10-13 10:22:13,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2020-10-13 10:22:13,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-13 10:22:13,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 130. [2020-10-13 10:22:13,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-13 10:22:13,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 132 transitions. [2020-10-13 10:22:13,928 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 132 transitions. Word has length 92 [2020-10-13 10:22:13,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:13,928 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 132 transitions. [2020-10-13 10:22:13,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 10:22:13,929 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 132 transitions. [2020-10-13 10:22:13,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-13 10:22:13,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:13,929 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:13,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 10:22:13,930 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:22:13,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:13,931 INFO L82 PathProgramCache]: Analyzing trace with hash 150588875, now seen corresponding path program 6 times [2020-10-13 10:22:13,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:13,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846612255] [2020-10-13 10:22:13,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:13,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:13,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:14,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:14,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 10:22:14,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:14,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 683 [2020-10-13 10:22:14,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:14,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 10:22:14,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:14,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-13 10:22:14,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:14,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:14,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:14,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:14,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:14,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:14,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:14,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:14,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:14,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:14,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:14,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:15,051 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 16 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:15,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846612255] [2020-10-13 10:22:15,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:15,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:22:15,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770912565] [2020-10-13 10:22:15,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:22:15,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:15,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:22:15,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:22:15,053 INFO L87 Difference]: Start difference. First operand 130 states and 132 transitions. Second operand 15 states. [2020-10-13 10:22:15,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:15,956 INFO L93 Difference]: Finished difference Result 166 states and 168 transitions. [2020-10-13 10:22:15,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 10:22:15,956 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 100 [2020-10-13 10:22:15,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:15,957 INFO L225 Difference]: With dead ends: 166 [2020-10-13 10:22:15,957 INFO L226 Difference]: Without dead ends: 102 [2020-10-13 10:22:15,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2020-10-13 10:22:15,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-13 10:22:15,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-10-13 10:22:15,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-13 10:22:15,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 103 transitions. [2020-10-13 10:22:15,967 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 103 transitions. Word has length 100 [2020-10-13 10:22:15,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:15,967 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 103 transitions. [2020-10-13 10:22:15,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:22:15,967 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 103 transitions. [2020-10-13 10:22:15,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-13 10:22:15,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:15,969 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:22:15,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 10:22:15,969 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:22:15,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:15,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1675929944, now seen corresponding path program 7 times [2020-10-13 10:22:15,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:15,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601349219] [2020-10-13 10:22:15,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:16,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:16,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:16,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 10:22:16,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:16,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 823 [2020-10-13 10:22:16,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:16,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 10:22:16,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:16,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 10:22:16,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:17,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:17,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:17,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:17,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:17,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:17,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:17,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:17,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:17,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:17,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:17,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:17,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:17,321 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 131 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:17,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601349219] [2020-10-13 10:22:17,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:17,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 10:22:17,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40035385] [2020-10-13 10:22:17,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 10:22:17,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:17,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 10:22:17,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:22:17,323 INFO L87 Difference]: Start difference. First operand 102 states and 103 transitions. Second operand 16 states. [2020-10-13 10:22:18,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:18,187 INFO L93 Difference]: Finished difference Result 175 states and 177 transitions. [2020-10-13 10:22:18,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 10:22:18,188 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 101 [2020-10-13 10:22:18,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:18,190 INFO L225 Difference]: With dead ends: 175 [2020-10-13 10:22:18,190 INFO L226 Difference]: Without dead ends: 173 [2020-10-13 10:22:18,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2020-10-13 10:22:18,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-13 10:22:18,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 139. [2020-10-13 10:22:18,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-13 10:22:18,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 141 transitions. [2020-10-13 10:22:18,201 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 141 transitions. Word has length 101 [2020-10-13 10:22:18,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:18,201 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 141 transitions. [2020-10-13 10:22:18,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 10:22:18,202 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 141 transitions. [2020-10-13 10:22:18,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-13 10:22:18,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:18,203 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1] [2020-10-13 10:22:18,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 10:22:18,203 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:22:18,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:18,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1813493284, now seen corresponding path program 8 times [2020-10-13 10:22:18,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:18,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307802851] [2020-10-13 10:22:18,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:18,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:18,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:19,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:19,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-13 10:22:19,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:19,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1038 [2020-10-13 10:22:19,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:19,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 10:22:19,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:19,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-13 10:22:19,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:19,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:19,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:19,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:19,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:19,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:19,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:19,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:19,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:19,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:19,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:19,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:19,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:20,053 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:20,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307802851] [2020-10-13 10:22:20,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:20,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 10:22:20,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030740502] [2020-10-13 10:22:20,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 10:22:20,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:20,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 10:22:20,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:22:20,055 INFO L87 Difference]: Start difference. First operand 139 states and 141 transitions. Second operand 16 states. [2020-10-13 10:22:21,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:21,093 INFO L93 Difference]: Finished difference Result 183 states and 185 transitions. [2020-10-13 10:22:21,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 10:22:21,094 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 109 [2020-10-13 10:22:21,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:21,095 INFO L225 Difference]: With dead ends: 183 [2020-10-13 10:22:21,095 INFO L226 Difference]: Without dead ends: 181 [2020-10-13 10:22:21,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2020-10-13 10:22:21,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-13 10:22:21,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 147. [2020-10-13 10:22:21,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-13 10:22:21,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 149 transitions. [2020-10-13 10:22:21,113 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 149 transitions. Word has length 109 [2020-10-13 10:22:21,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:21,113 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 149 transitions. [2020-10-13 10:22:21,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 10:22:21,113 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 149 transitions. [2020-10-13 10:22:21,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 10:22:21,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:21,114 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1] [2020-10-13 10:22:21,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 10:22:21,115 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:22:21,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:21,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1686359071, now seen corresponding path program 9 times [2020-10-13 10:22:21,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:21,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595536951] [2020-10-13 10:22:21,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:21,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:21,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:22,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:22,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 10:22:22,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:22,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1213 [2020-10-13 10:22:22,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:22,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 10:22:22,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:22,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-13 10:22:22,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:23,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:23,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:23,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:23,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:23,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:23,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:23,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:23,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:23,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:23,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:23,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:23,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:23,126 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:23,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595536951] [2020-10-13 10:22:23,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:23,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:22:23,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499877946] [2020-10-13 10:22:23,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:22:23,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:23,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:22:23,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:22:23,129 INFO L87 Difference]: Start difference. First operand 147 states and 149 transitions. Second operand 17 states. [2020-10-13 10:22:24,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:24,413 INFO L93 Difference]: Finished difference Result 242 states and 245 transitions. [2020-10-13 10:22:24,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 10:22:24,413 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 110 [2020-10-13 10:22:24,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:24,415 INFO L225 Difference]: With dead ends: 242 [2020-10-13 10:22:24,415 INFO L226 Difference]: Without dead ends: 240 [2020-10-13 10:22:24,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=89, Invalid=561, Unknown=0, NotChecked=0, Total=650 [2020-10-13 10:22:24,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-10-13 10:22:24,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 176. [2020-10-13 10:22:24,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-13 10:22:24,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 179 transitions. [2020-10-13 10:22:24,430 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 179 transitions. Word has length 110 [2020-10-13 10:22:24,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:24,431 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 179 transitions. [2020-10-13 10:22:24,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:22:24,431 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 179 transitions. [2020-10-13 10:22:24,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-13 10:22:24,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:24,432 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1] [2020-10-13 10:22:24,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 10:22:24,432 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:22:24,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:24,433 INFO L82 PathProgramCache]: Analyzing trace with hash -318294288, now seen corresponding path program 10 times [2020-10-13 10:22:24,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:24,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [412268115] [2020-10-13 10:22:24,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:24,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:24,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:25,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:25,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 10:22:25,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:25,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 918 [2020-10-13 10:22:25,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:25,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 10:22:25,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:25,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-13 10:22:25,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:25,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:25,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:25,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:25,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:25,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:25,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:25,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:25,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:25,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:25,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:25,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:25,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:25,986 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 20 proven. 179 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:25,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [412268115] [2020-10-13 10:22:25,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:25,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:22:25,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28528485] [2020-10-13 10:22:25,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:22:25,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:25,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:22:25,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:22:25,989 INFO L87 Difference]: Start difference. First operand 176 states and 179 transitions. Second operand 17 states. [2020-10-13 10:22:27,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:27,210 INFO L93 Difference]: Finished difference Result 220 states and 223 transitions. [2020-10-13 10:22:27,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 10:22:27,210 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 117 [2020-10-13 10:22:27,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:27,211 INFO L225 Difference]: With dead ends: 220 [2020-10-13 10:22:27,211 INFO L226 Difference]: Without dead ends: 148 [2020-10-13 10:22:27,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=728, Unknown=0, NotChecked=0, Total=812 [2020-10-13 10:22:27,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-13 10:22:27,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2020-10-13 10:22:27,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-13 10:22:27,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 150 transitions. [2020-10-13 10:22:27,224 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 150 transitions. Word has length 117 [2020-10-13 10:22:27,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:27,225 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 150 transitions. [2020-10-13 10:22:27,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:22:27,225 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 150 transitions. [2020-10-13 10:22:27,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-13 10:22:27,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:27,226 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 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 10:22:27,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 10:22:27,226 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:22:27,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:27,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1247338005, now seen corresponding path program 11 times [2020-10-13 10:22:27,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:27,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143302709] [2020-10-13 10:22:27,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:27,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:28,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:28,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-13 10:22:28,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:28,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 968 [2020-10-13 10:22:28,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:28,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 10:22:28,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:28,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-13 10:22:28,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:28,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:28,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:28,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:28,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:28,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:28,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:28,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:28,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:28,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:28,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:28,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:28,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:29,101 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 0 proven. 205 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:29,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143302709] [2020-10-13 10:22:29,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:29,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 10:22:29,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530664904] [2020-10-13 10:22:29,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 10:22:29,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:29,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 10:22:29,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:22:29,103 INFO L87 Difference]: Start difference. First operand 148 states and 150 transitions. Second operand 18 states. [2020-10-13 10:22:30,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:30,358 INFO L93 Difference]: Finished difference Result 192 states and 194 transitions. [2020-10-13 10:22:30,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 10:22:30,358 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 118 [2020-10-13 10:22:30,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:30,360 INFO L225 Difference]: With dead ends: 192 [2020-10-13 10:22:30,361 INFO L226 Difference]: Without dead ends: 190 [2020-10-13 10:22:30,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=86, Invalid=670, Unknown=0, NotChecked=0, Total=756 [2020-10-13 10:22:30,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-13 10:22:30,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 156. [2020-10-13 10:22:30,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-13 10:22:30,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 158 transitions. [2020-10-13 10:22:30,373 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 158 transitions. Word has length 118 [2020-10-13 10:22:30,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:30,374 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 158 transitions. [2020-10-13 10:22:30,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 10:22:30,374 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 158 transitions. [2020-10-13 10:22:30,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-13 10:22:30,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:30,375 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 6, 5, 5, 4, 4, 4, 4, 4, 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, 1] [2020-10-13 10:22:30,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 10:22:30,376 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:22:30,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:30,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1289869624, now seen corresponding path program 12 times [2020-10-13 10:22:30,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:30,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149757447] [2020-10-13 10:22:30,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:30,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:30,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:31,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:31,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-13 10:22:31,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:31,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1103 [2020-10-13 10:22:31,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:31,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 10:22:31,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:31,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-13 10:22:31,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:32,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:32,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:32,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:32,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:32,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:32,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:32,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:32,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:32,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:32,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:32,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:32,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:32,552 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:32,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149757447] [2020-10-13 10:22:32,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:32,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 10:22:32,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235943988] [2020-10-13 10:22:32,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 10:22:32,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:32,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 10:22:32,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:22:32,554 INFO L87 Difference]: Start difference. First operand 156 states and 158 transitions. Second operand 18 states. [2020-10-13 10:22:33,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:33,465 INFO L93 Difference]: Finished difference Result 190 states and 192 transitions. [2020-10-13 10:22:33,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 10:22:33,465 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 119 [2020-10-13 10:22:33,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:33,467 INFO L225 Difference]: With dead ends: 190 [2020-10-13 10:22:33,467 INFO L226 Difference]: Without dead ends: 188 [2020-10-13 10:22:33,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2020-10-13 10:22:33,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-13 10:22:33,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 156. [2020-10-13 10:22:33,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-13 10:22:33,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 158 transitions. [2020-10-13 10:22:33,481 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 158 transitions. Word has length 119 [2020-10-13 10:22:33,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:33,482 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 158 transitions. [2020-10-13 10:22:33,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 10:22:33,482 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 158 transitions. [2020-10-13 10:22:33,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-13 10:22:33,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:33,483 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 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 10:22:33,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 10:22:33,483 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:22:33,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:33,484 INFO L82 PathProgramCache]: Analyzing trace with hash 321776567, now seen corresponding path program 13 times [2020-10-13 10:22:33,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:33,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [772520467] [2020-10-13 10:22:33,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:33,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:33,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:34,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:34,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 10:22:34,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:34,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1446 [2020-10-13 10:22:34,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:34,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 10:22:34,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:34,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-13 10:22:34,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:35,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:35,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:35,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:35,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:35,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:35,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:35,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:35,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:35,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:35,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:35,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:35,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:35,783 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:35,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [772520467] [2020-10-13 10:22:35,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:35,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 10:22:35,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791155395] [2020-10-13 10:22:35,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 10:22:35,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:35,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 10:22:35,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:22:35,785 INFO L87 Difference]: Start difference. First operand 156 states and 158 transitions. Second operand 18 states. [2020-10-13 10:22:37,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:37,101 INFO L93 Difference]: Finished difference Result 208 states and 210 transitions. [2020-10-13 10:22:37,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 10:22:37,101 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 126 [2020-10-13 10:22:37,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:37,103 INFO L225 Difference]: With dead ends: 208 [2020-10-13 10:22:37,104 INFO L226 Difference]: Without dead ends: 206 [2020-10-13 10:22:37,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2020-10-13 10:22:37,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-13 10:22:37,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 164. [2020-10-13 10:22:37,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-13 10:22:37,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 166 transitions. [2020-10-13 10:22:37,119 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 166 transitions. Word has length 126 [2020-10-13 10:22:37,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:37,119 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 166 transitions. [2020-10-13 10:22:37,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 10:22:37,120 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 166 transitions. [2020-10-13 10:22:37,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-13 10:22:37,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:37,121 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 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 10:22:37,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 10:22:37,121 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:22:37,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:37,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1414989316, now seen corresponding path program 14 times [2020-10-13 10:22:37,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:37,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339112951] [2020-10-13 10:22:37,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:37,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:37,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:38,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:38,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 10:22:38,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:38,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1466 [2020-10-13 10:22:38,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:38,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 10:22:38,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:38,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-13 10:22:38,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:22:39,249 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-10-13 10:22:39,407 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2020-10-13 10:22:39,567 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2020-10-13 10:22:39,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:39,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:39,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:39,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:39,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:39,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:39,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:39,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:39,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:39,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:39,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:39,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:40,249 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 0 proven. 258 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:40,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339112951] [2020-10-13 10:22:40,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:40,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 10:22:40,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471402728] [2020-10-13 10:22:40,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 10:22:40,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:40,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 10:22:40,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:22:40,251 INFO L87 Difference]: Start difference. First operand 164 states and 166 transitions. Second operand 19 states. [2020-10-13 10:22:41,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:41,415 INFO L93 Difference]: Finished difference Result 206 states and 208 transitions. [2020-10-13 10:22:41,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 10:22:41,415 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 127 [2020-10-13 10:22:41,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:41,417 INFO L225 Difference]: With dead ends: 206 [2020-10-13 10:22:41,417 INFO L226 Difference]: Without dead ends: 204 [2020-10-13 10:22:41,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2020-10-13 10:22:41,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-13 10:22:41,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 164. [2020-10-13 10:22:41,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-13 10:22:41,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 166 transitions. [2020-10-13 10:22:41,434 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 166 transitions. Word has length 127 [2020-10-13 10:22:41,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:41,435 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 166 transitions. [2020-10-13 10:22:41,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 10:22:41,435 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 166 transitions. [2020-10-13 10:22:41,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-13 10:22:41,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:41,436 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 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 10:22:41,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 10:22:41,437 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:22:41,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:41,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1818503555, now seen corresponding path program 15 times [2020-10-13 10:22:41,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:41,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827718417] [2020-10-13 10:22:41,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:41,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:41,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:42,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:42,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-13 10:22:42,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:42,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1106 [2020-10-13 10:22:42,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:42,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 10:22:42,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:42,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-13 10:22:42,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:43,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:43,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:43,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:43,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:43,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:43,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:43,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:43,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:43,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:43,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:43,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:43,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:43,396 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 24 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:43,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827718417] [2020-10-13 10:22:43,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:43,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 10:22:43,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956006412] [2020-10-13 10:22:43,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 10:22:43,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:43,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 10:22:43,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:22:43,398 INFO L87 Difference]: Start difference. First operand 164 states and 166 transitions. Second operand 19 states. [2020-10-13 10:22:44,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:44,975 INFO L93 Difference]: Finished difference Result 216 states and 218 transitions. [2020-10-13 10:22:44,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 10:22:44,975 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 134 [2020-10-13 10:22:44,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:44,976 INFO L225 Difference]: With dead ends: 216 [2020-10-13 10:22:44,976 INFO L226 Difference]: Without dead ends: 136 [2020-10-13 10:22:44,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=96, Invalid=960, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 10:22:44,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-13 10:22:44,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-10-13 10:22:44,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-13 10:22:44,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2020-10-13 10:22:44,990 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 134 [2020-10-13 10:22:44,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:44,990 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions. [2020-10-13 10:22:44,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 10:22:44,990 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions. [2020-10-13 10:22:44,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-13 10:22:44,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:44,991 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 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 10:22:44,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 10:22:44,992 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:22:44,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:44,992 INFO L82 PathProgramCache]: Analyzing trace with hash 6858448, now seen corresponding path program 16 times [2020-10-13 10:22:44,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:44,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1363242780] [2020-10-13 10:22:44,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:45,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:45,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:46,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:46,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-13 10:22:46,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:46,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1418 [2020-10-13 10:22:46,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:46,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-13 10:22:46,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:46,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-13 10:22:46,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:47,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:47,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:47,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:47,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:47,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:47,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:47,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:47,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:47,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:47,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:47,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:47,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:47,560 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:47,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1363242780] [2020-10-13 10:22:47,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:47,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 10:22:47,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259378701] [2020-10-13 10:22:47,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 10:22:47,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:47,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 10:22:47,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2020-10-13 10:22:47,561 INFO L87 Difference]: Start difference. First operand 136 states and 137 transitions. Second operand 20 states. [2020-10-13 10:22:49,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:49,170 INFO L93 Difference]: Finished difference Result 225 states and 227 transitions. [2020-10-13 10:22:49,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 10:22:49,171 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 135 [2020-10-13 10:22:49,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:49,172 INFO L225 Difference]: With dead ends: 225 [2020-10-13 10:22:49,172 INFO L226 Difference]: Without dead ends: 223 [2020-10-13 10:22:49,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=86, Invalid=726, Unknown=0, NotChecked=0, Total=812 [2020-10-13 10:22:49,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-13 10:22:49,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 173. [2020-10-13 10:22:49,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-13 10:22:49,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 175 transitions. [2020-10-13 10:22:49,190 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 175 transitions. Word has length 135 [2020-10-13 10:22:49,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:49,191 INFO L479 AbstractCegarLoop]: Abstraction has 173 states and 175 transitions. [2020-10-13 10:22:49,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 10:22:49,191 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 175 transitions. [2020-10-13 10:22:49,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-13 10:22:49,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:49,192 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 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 10:22:49,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 10:22:49,192 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:22:49,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:49,193 INFO L82 PathProgramCache]: Analyzing trace with hash -144524388, now seen corresponding path program 17 times [2020-10-13 10:22:49,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:49,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426156044] [2020-10-13 10:22:49,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:49,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:49,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:50,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:50,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-13 10:22:50,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:50,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1635 [2020-10-13 10:22:50,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:50,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 10:22:50,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:50,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-13 10:22:50,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:51,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:51,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:51,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:51,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:51,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:51,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:51,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:51,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:51,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:51,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:51,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:51,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:52,087 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:52,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426156044] [2020-10-13 10:22:52,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:52,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 10:22:52,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377239278] [2020-10-13 10:22:52,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 10:22:52,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:52,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 10:22:52,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-10-13 10:22:52,089 INFO L87 Difference]: Start difference. First operand 173 states and 175 transitions. Second operand 20 states. [2020-10-13 10:22:54,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:54,107 INFO L93 Difference]: Finished difference Result 233 states and 235 transitions. [2020-10-13 10:22:54,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-13 10:22:54,108 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 143 [2020-10-13 10:22:54,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:54,110 INFO L225 Difference]: With dead ends: 233 [2020-10-13 10:22:54,110 INFO L226 Difference]: Without dead ends: 231 [2020-10-13 10:22:54,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=93, Invalid=963, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 10:22:54,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-10-13 10:22:54,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 181. [2020-10-13 10:22:54,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-13 10:22:54,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 183 transitions. [2020-10-13 10:22:54,130 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 183 transitions. Word has length 143 [2020-10-13 10:22:54,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:54,130 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 183 transitions. [2020-10-13 10:22:54,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 10:22:54,130 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 183 transitions. [2020-10-13 10:22:54,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-13 10:22:54,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:54,131 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 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 10:22:54,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-13 10:22:54,131 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:22:54,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:54,132 INFO L82 PathProgramCache]: Analyzing trace with hash -717465641, now seen corresponding path program 18 times [2020-10-13 10:22:54,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:54,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89068759] [2020-10-13 10:22:54,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:54,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:54,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:56,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:56,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-13 10:22:56,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:56,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1969 [2020-10-13 10:22:56,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:56,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-13 10:22:56,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:22:56,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-13 10:22:56,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:57,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:22:57,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:57,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:22:57,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:22:57,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:22:57,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:22:57,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:22:57,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:22:57,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:22:57,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:22:57,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:22:57,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:22:57,399 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 0 proven. 358 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:22:57,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89068759] [2020-10-13 10:22:57,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:22:57,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 10:22:57,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077572252] [2020-10-13 10:22:57,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 10:22:57,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:22:57,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 10:22:57,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:22:57,401 INFO L87 Difference]: Start difference. First operand 181 states and 183 transitions. Second operand 21 states. [2020-10-13 10:22:59,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:22:59,328 INFO L93 Difference]: Finished difference Result 231 states and 233 transitions. [2020-10-13 10:22:59,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 10:22:59,328 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 144 [2020-10-13 10:22:59,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:22:59,330 INFO L225 Difference]: With dead ends: 231 [2020-10-13 10:22:59,330 INFO L226 Difference]: Without dead ends: 229 [2020-10-13 10:22:59,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=96, Invalid=896, Unknown=0, NotChecked=0, Total=992 [2020-10-13 10:22:59,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-13 10:22:59,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 181. [2020-10-13 10:22:59,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-13 10:22:59,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 183 transitions. [2020-10-13 10:22:59,347 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 183 transitions. Word has length 144 [2020-10-13 10:22:59,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:22:59,347 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 183 transitions. [2020-10-13 10:22:59,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 10:22:59,347 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 183 transitions. [2020-10-13 10:22:59,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-13 10:22:59,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:22:59,348 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 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 10:22:59,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-13 10:22:59,349 INFO L427 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:22:59,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:22:59,349 INFO L82 PathProgramCache]: Analyzing trace with hash -745454488, now seen corresponding path program 19 times [2020-10-13 10:22:59,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:22:59,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907340023] [2020-10-13 10:22:59,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:22:59,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:22:59,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:01,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:01,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-13 10:23:01,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:01,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2196 [2020-10-13 10:23:01,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:01,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-13 10:23:01,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:01,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-13 10:23:01,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:02,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:02,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:02,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:02,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:02,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:02,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:02,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:02,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:02,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:02,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:02,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:02,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:02,682 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 28 proven. 368 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:02,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907340023] [2020-10-13 10:23:02,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:02,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 10:23:02,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567406828] [2020-10-13 10:23:02,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 10:23:02,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:02,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 10:23:02,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:23:02,683 INFO L87 Difference]: Start difference. First operand 181 states and 183 transitions. Second operand 21 states. [2020-10-13 10:23:04,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:04,824 INFO L93 Difference]: Finished difference Result 241 states and 243 transitions. [2020-10-13 10:23:04,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 10:23:04,825 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 151 [2020-10-13 10:23:04,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:04,825 INFO L225 Difference]: With dead ends: 241 [2020-10-13 10:23:04,826 INFO L226 Difference]: Without dead ends: 153 [2020-10-13 10:23:04,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=108, Invalid=1224, Unknown=0, NotChecked=0, Total=1332 [2020-10-13 10:23:04,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-13 10:23:04,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2020-10-13 10:23:04,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-13 10:23:04,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 154 transitions. [2020-10-13 10:23:04,840 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 154 transitions. Word has length 151 [2020-10-13 10:23:04,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:04,840 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 154 transitions. [2020-10-13 10:23:04,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 10:23:04,840 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 154 transitions. [2020-10-13 10:23:04,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-13 10:23:04,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:04,841 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 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 10:23:04,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-13 10:23:04,841 INFO L427 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:23:04,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:04,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1479248477, now seen corresponding path program 20 times [2020-10-13 10:23:04,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:04,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698172164] [2020-10-13 10:23:04,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:04,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:05,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:06,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:06,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-13 10:23:06,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:06,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1832 [2020-10-13 10:23:06,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:06,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 10:23:06,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:06,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-13 10:23:06,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:07,353 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2020-10-13 10:23:07,558 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 86 [2020-10-13 10:23:07,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:07,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:07,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:07,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:07,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:07,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:07,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:23:07,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:07,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:07,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:07,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:07,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:08,250 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 0 proven. 404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:08,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698172164] [2020-10-13 10:23:08,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:08,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 10:23:08,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040521268] [2020-10-13 10:23:08,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 10:23:08,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:08,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 10:23:08,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2020-10-13 10:23:08,252 INFO L87 Difference]: Start difference. First operand 153 states and 154 transitions. Second operand 22 states. [2020-10-13 10:23:10,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:10,528 INFO L93 Difference]: Finished difference Result 250 states and 252 transitions. [2020-10-13 10:23:10,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-13 10:23:10,529 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 152 [2020-10-13 10:23:10,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:10,531 INFO L225 Difference]: With dead ends: 250 [2020-10-13 10:23:10,531 INFO L226 Difference]: Without dead ends: 248 [2020-10-13 10:23:10,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=110, Invalid=1150, Unknown=0, NotChecked=0, Total=1260 [2020-10-13 10:23:10,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-10-13 10:23:10,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 190. [2020-10-13 10:23:10,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-10-13 10:23:10,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 192 transitions. [2020-10-13 10:23:10,552 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 192 transitions. Word has length 152 [2020-10-13 10:23:10,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:10,553 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 192 transitions. [2020-10-13 10:23:10,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 10:23:10,553 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 192 transitions. [2020-10-13 10:23:10,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-13 10:23:10,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:10,554 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 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 10:23:10,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-13 10:23:10,555 INFO L427 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:23:10,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:10,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1233651567, now seen corresponding path program 21 times [2020-10-13 10:23:10,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:10,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [751331901] [2020-10-13 10:23:10,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:10,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:10,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:12,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:12,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 10:23:12,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:12,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2191 [2020-10-13 10:23:12,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:12,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-13 10:23:12,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:12,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-13 10:23:12,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:14,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:14,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:14,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:14,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:14,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:14,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:14,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:14,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:14,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:14,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:14,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:14,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:14,532 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 0 proven. 458 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:14,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [751331901] [2020-10-13 10:23:14,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:14,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 10:23:14,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233780472] [2020-10-13 10:23:14,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 10:23:14,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:14,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 10:23:14,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2020-10-13 10:23:14,534 INFO L87 Difference]: Start difference. First operand 190 states and 192 transitions. Second operand 22 states. [2020-10-13 10:23:16,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:16,912 INFO L93 Difference]: Finished difference Result 258 states and 260 transitions. [2020-10-13 10:23:16,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 10:23:16,912 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 160 [2020-10-13 10:23:16,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:16,914 INFO L225 Difference]: With dead ends: 258 [2020-10-13 10:23:16,914 INFO L226 Difference]: Without dead ends: 256 [2020-10-13 10:23:16,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=89, Invalid=967, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 10:23:16,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-10-13 10:23:16,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 198. [2020-10-13 10:23:16,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-10-13 10:23:16,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 200 transitions. [2020-10-13 10:23:16,937 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 200 transitions. Word has length 160 [2020-10-13 10:23:16,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:16,938 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 200 transitions. [2020-10-13 10:23:16,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 10:23:16,938 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 200 transitions. [2020-10-13 10:23:16,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-13 10:23:16,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:16,939 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 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 10:23:16,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-13 10:23:16,940 INFO L427 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:23:16,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:16,940 INFO L82 PathProgramCache]: Analyzing trace with hash -256502916, now seen corresponding path program 22 times [2020-10-13 10:23:16,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:16,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606520625] [2020-10-13 10:23:16,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:17,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:17,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:19,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:19,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-13 10:23:19,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:19,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2455 [2020-10-13 10:23:19,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:19,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-13 10:23:19,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:19,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-13 10:23:19,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:20,344 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2020-10-13 10:23:20,527 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 89 [2020-10-13 10:23:20,722 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2020-10-13 10:23:21,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:21,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:21,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:21,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:21,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:21,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:21,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:21,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:21,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:21,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:21,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:21,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:21,559 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 0 proven. 475 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:21,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1606520625] [2020-10-13 10:23:21,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:21,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 10:23:21,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597995646] [2020-10-13 10:23:21,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 10:23:21,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:21,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 10:23:21,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=456, Unknown=0, NotChecked=0, Total=506 [2020-10-13 10:23:21,561 INFO L87 Difference]: Start difference. First operand 198 states and 200 transitions. Second operand 23 states. [2020-10-13 10:23:23,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:23,658 INFO L93 Difference]: Finished difference Result 256 states and 258 transitions. [2020-10-13 10:23:23,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 10:23:23,658 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 161 [2020-10-13 10:23:23,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:23,660 INFO L225 Difference]: With dead ends: 256 [2020-10-13 10:23:23,660 INFO L226 Difference]: Without dead ends: 254 [2020-10-13 10:23:23,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=85, Invalid=845, Unknown=0, NotChecked=0, Total=930 [2020-10-13 10:23:23,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-10-13 10:23:23,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 198. [2020-10-13 10:23:23,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-10-13 10:23:23,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 200 transitions. [2020-10-13 10:23:23,686 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 200 transitions. Word has length 161 [2020-10-13 10:23:23,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:23,687 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 200 transitions. [2020-10-13 10:23:23,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 10:23:23,687 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 200 transitions. [2020-10-13 10:23:23,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-13 10:23:23,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:23,689 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 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 10:23:23,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-13 10:23:23,689 INFO L427 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:23:23,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:23,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1906511163, now seen corresponding path program 23 times [2020-10-13 10:23:23,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:23,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507607577] [2020-10-13 10:23:23,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:23,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:23,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:26,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:26,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 10:23:26,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:26,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2607 [2020-10-13 10:23:26,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:26,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-13 10:23:26,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:26,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-13 10:23:26,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:27,016 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 80 [2020-10-13 10:23:27,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:27,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:27,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:27,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:27,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:27,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:27,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:27,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:27,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:27,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:27,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:27,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:27,962 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 32 proven. 488 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:27,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507607577] [2020-10-13 10:23:27,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:27,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 10:23:27,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408980677] [2020-10-13 10:23:27,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 10:23:27,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:27,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 10:23:27,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2020-10-13 10:23:27,963 INFO L87 Difference]: Start difference. First operand 198 states and 200 transitions. Second operand 23 states. [2020-10-13 10:23:30,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:30,722 INFO L93 Difference]: Finished difference Result 266 states and 268 transitions. [2020-10-13 10:23:30,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 10:23:30,723 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 168 [2020-10-13 10:23:30,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:30,724 INFO L225 Difference]: With dead ends: 266 [2020-10-13 10:23:30,724 INFO L226 Difference]: Without dead ends: 170 [2020-10-13 10:23:30,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=120, Invalid=1520, Unknown=0, NotChecked=0, Total=1640 [2020-10-13 10:23:30,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-13 10:23:30,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-10-13 10:23:30,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-13 10:23:30,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 171 transitions. [2020-10-13 10:23:30,746 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 171 transitions. Word has length 168 [2020-10-13 10:23:30,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:30,746 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 171 transitions. [2020-10-13 10:23:30,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 10:23:30,746 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 171 transitions. [2020-10-13 10:23:30,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-13 10:23:30,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:30,747 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 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 10:23:30,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-13 10:23:30,748 INFO L427 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:23:30,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:30,748 INFO L82 PathProgramCache]: Analyzing trace with hash -947995576, now seen corresponding path program 24 times [2020-10-13 10:23:30,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:30,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922413071] [2020-10-13 10:23:30,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:30,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:31,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:33,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:33,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-13 10:23:33,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:34,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3106 [2020-10-13 10:23:34,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:34,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-13 10:23:34,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:34,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-13 10:23:34,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:34,831 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 88 [2020-10-13 10:23:35,022 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 95 [2020-10-13 10:23:35,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:35,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:35,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:35,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:35,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:35,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:35,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:35,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:35,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:35,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:35,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:35,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:35,940 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 0 proven. 529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:35,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1922413071] [2020-10-13 10:23:35,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:35,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-13 10:23:35,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837311682] [2020-10-13 10:23:35,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-13 10:23:35,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:35,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-13 10:23:35,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=502, Unknown=0, NotChecked=0, Total=552 [2020-10-13 10:23:35,941 INFO L87 Difference]: Start difference. First operand 170 states and 171 transitions. Second operand 24 states. [2020-10-13 10:23:38,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:38,318 INFO L93 Difference]: Finished difference Result 275 states and 277 transitions. [2020-10-13 10:23:38,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 10:23:38,318 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 169 [2020-10-13 10:23:38,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:38,320 INFO L225 Difference]: With dead ends: 275 [2020-10-13 10:23:38,320 INFO L226 Difference]: Without dead ends: 273 [2020-10-13 10:23:38,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=94, Invalid=1028, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 10:23:38,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-10-13 10:23:38,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 207. [2020-10-13 10:23:38,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-10-13 10:23:38,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 209 transitions. [2020-10-13 10:23:38,343 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 209 transitions. Word has length 169 [2020-10-13 10:23:38,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:38,343 INFO L479 AbstractCegarLoop]: Abstraction has 207 states and 209 transitions. [2020-10-13 10:23:38,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-13 10:23:38,344 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 209 transitions. [2020-10-13 10:23:38,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-13 10:23:38,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:38,345 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 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 10:23:38,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-13 10:23:38,345 INFO L427 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:23:38,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:38,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1705498900, now seen corresponding path program 25 times [2020-10-13 10:23:38,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:38,346 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99469421] [2020-10-13 10:23:38,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:38,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:38,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:42,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:42,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-13 10:23:42,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:42,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3649 [2020-10-13 10:23:42,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:42,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-13 10:23:42,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:42,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-13 10:23:42,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:23:42,936 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 87 [2020-10-13 10:23:43,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:43,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:43,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:43,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:43,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:43,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:43,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:43,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:43,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:43,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:43,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:43,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:43,923 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 0 proven. 591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:43,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99469421] [2020-10-13 10:23:43,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:43,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-13 10:23:43,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479516836] [2020-10-13 10:23:43,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-13 10:23:43,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:43,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-13 10:23:43,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2020-10-13 10:23:43,924 INFO L87 Difference]: Start difference. First operand 207 states and 209 transitions. Second operand 24 states. [2020-10-13 10:23:47,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:47,191 INFO L93 Difference]: Finished difference Result 283 states and 285 transitions. [2020-10-13 10:23:47,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-13 10:23:47,191 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 177 [2020-10-13 10:23:47,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:47,193 INFO L225 Difference]: With dead ends: 283 [2020-10-13 10:23:47,193 INFO L226 Difference]: Without dead ends: 281 [2020-10-13 10:23:47,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=117, Invalid=1523, Unknown=0, NotChecked=0, Total=1640 [2020-10-13 10:23:47,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-10-13 10:23:47,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 215. [2020-10-13 10:23:47,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-10-13 10:23:47,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 217 transitions. [2020-10-13 10:23:47,222 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 217 transitions. Word has length 177 [2020-10-13 10:23:47,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:47,223 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 217 transitions. [2020-10-13 10:23:47,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-13 10:23:47,223 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 217 transitions. [2020-10-13 10:23:47,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-13 10:23:47,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:47,224 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 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 10:23:47,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-13 10:23:47,225 INFO L427 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:23:47,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:47,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1410558863, now seen corresponding path program 26 times [2020-10-13 10:23:47,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:47,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2129507463] [2020-10-13 10:23:47,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:47,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:47,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:51,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:51,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 10:23:51,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:51,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3612 [2020-10-13 10:23:51,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:51,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-13 10:23:51,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:23:51,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-13 10:23:51,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:51,944 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 88 [2020-10-13 10:23:52,158 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 95 [2020-10-13 10:23:52,390 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 100 [2020-10-13 10:23:53,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:23:53,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:53,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:23:53,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:23:53,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:23:53,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:23:53,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:23:53,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:23:53,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:23:53,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:23:53,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:23:53,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:23:53,458 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 0 proven. 609 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:23:53,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2129507463] [2020-10-13 10:23:53,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:23:53,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-13 10:23:53,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070216094] [2020-10-13 10:23:53,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-13 10:23:53,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:23:53,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-13 10:23:53,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=546, Unknown=0, NotChecked=0, Total=600 [2020-10-13 10:23:53,460 INFO L87 Difference]: Start difference. First operand 215 states and 217 transitions. Second operand 25 states. [2020-10-13 10:23:56,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:23:56,739 INFO L93 Difference]: Finished difference Result 281 states and 283 transitions. [2020-10-13 10:23:56,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-13 10:23:56,739 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 178 [2020-10-13 10:23:56,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:23:56,741 INFO L225 Difference]: With dead ends: 281 [2020-10-13 10:23:56,741 INFO L226 Difference]: Without dead ends: 279 [2020-10-13 10:23:56,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=120, Invalid=1440, Unknown=0, NotChecked=0, Total=1560 [2020-10-13 10:23:56,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-10-13 10:23:56,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 215. [2020-10-13 10:23:56,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-10-13 10:23:56,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 217 transitions. [2020-10-13 10:23:56,762 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 217 transitions. Word has length 178 [2020-10-13 10:23:56,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:23:56,762 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 217 transitions. [2020-10-13 10:23:56,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-13 10:23:56,762 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 217 transitions. [2020-10-13 10:23:56,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-13 10:23:56,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:23:56,763 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 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 10:23:56,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-13 10:23:56,763 INFO L427 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:23:56,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:23:56,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1836935648, now seen corresponding path program 27 times [2020-10-13 10:23:56,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:23:56,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884977050] [2020-10-13 10:23:56,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:23:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:23:56,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:00,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:00,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-13 10:24:00,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:00,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3468 [2020-10-13 10:24:00,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:00,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-13 10:24:00,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:00,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-13 10:24:00,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:01,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:01,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:01,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:01,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:01,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:01,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 10:24:01,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:01,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:01,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:01,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:01,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:02,306 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 36 proven. 625 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:02,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884977050] [2020-10-13 10:24:02,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:02,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-13 10:24:02,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746748807] [2020-10-13 10:24:02,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-13 10:24:02,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:02,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-13 10:24:02,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=551, Unknown=0, NotChecked=0, Total=600 [2020-10-13 10:24:02,308 INFO L87 Difference]: Start difference. First operand 215 states and 217 transitions. Second operand 25 states. [2020-10-13 10:24:05,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:05,851 INFO L93 Difference]: Finished difference Result 291 states and 293 transitions. [2020-10-13 10:24:05,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-13 10:24:05,852 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 185 [2020-10-13 10:24:05,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:05,853 INFO L225 Difference]: With dead ends: 291 [2020-10-13 10:24:05,853 INFO L226 Difference]: Without dead ends: 187 [2020-10-13 10:24:05,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=132, Invalid=1848, Unknown=0, NotChecked=0, Total=1980 [2020-10-13 10:24:05,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-13 10:24:05,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2020-10-13 10:24:05,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-13 10:24:05,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 188 transitions. [2020-10-13 10:24:05,872 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 188 transitions. Word has length 185 [2020-10-13 10:24:05,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:05,872 INFO L479 AbstractCegarLoop]: Abstraction has 187 states and 188 transitions. [2020-10-13 10:24:05,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-13 10:24:05,872 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 188 transitions. [2020-10-13 10:24:05,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-13 10:24:05,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:05,874 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 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 10:24:05,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-13 10:24:05,874 INFO L427 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:24:05,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:05,874 INFO L82 PathProgramCache]: Analyzing trace with hash 85479771, now seen corresponding path program 28 times [2020-10-13 10:24:05,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:05,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600631505] [2020-10-13 10:24:05,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:06,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:06,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:10,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:10,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-13 10:24:10,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:10,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3985 [2020-10-13 10:24:10,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:10,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-13 10:24:10,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:10,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-13 10:24:10,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:11,191 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 99 [2020-10-13 10:24:11,464 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 106 [2020-10-13 10:24:12,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:12,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:12,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:12,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:12,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:12,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:12,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:12,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:12,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:12,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:12,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:12,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:12,619 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 0 proven. 671 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:12,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600631505] [2020-10-13 10:24:12,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:12,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-13 10:24:12,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036449136] [2020-10-13 10:24:12,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-13 10:24:12,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:12,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-13 10:24:12,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=596, Unknown=0, NotChecked=0, Total=650 [2020-10-13 10:24:12,620 INFO L87 Difference]: Start difference. First operand 187 states and 188 transitions. Second operand 26 states. [2020-10-13 10:24:16,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:16,428 INFO L93 Difference]: Finished difference Result 300 states and 302 transitions. [2020-10-13 10:24:16,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-13 10:24:16,428 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 186 [2020-10-13 10:24:16,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:16,431 INFO L225 Difference]: With dead ends: 300 [2020-10-13 10:24:16,431 INFO L226 Difference]: Without dead ends: 298 [2020-10-13 10:24:16,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=134, Invalid=1758, Unknown=0, NotChecked=0, Total=1892 [2020-10-13 10:24:16,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-10-13 10:24:16,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 224. [2020-10-13 10:24:16,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-10-13 10:24:16,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 226 transitions. [2020-10-13 10:24:16,462 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 226 transitions. Word has length 186 [2020-10-13 10:24:16,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:16,463 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 226 transitions. [2020-10-13 10:24:16,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-13 10:24:16,463 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 226 transitions. [2020-10-13 10:24:16,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-13 10:24:16,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:16,464 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 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 10:24:16,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-13 10:24:16,465 INFO L427 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:24:16,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:16,465 INFO L82 PathProgramCache]: Analyzing trace with hash -806311129, now seen corresponding path program 29 times [2020-10-13 10:24:16,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:16,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424408885] [2020-10-13 10:24:16,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:16,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:16,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:20,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:20,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-13 10:24:20,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:20,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4065 [2020-10-13 10:24:20,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:20,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-13 10:24:20,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:20,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-13 10:24:20,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:21,517 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-13 10:24:21,728 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 86 [2020-10-13 10:24:22,123 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 96 [2020-10-13 10:24:22,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:22,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:22,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:22,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:22,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:22,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:22,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:22,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:22,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:22,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:22,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:22,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:23,402 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:23,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424408885] [2020-10-13 10:24:23,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:23,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-13 10:24:23,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412155643] [2020-10-13 10:24:23,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-13 10:24:23,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:23,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-13 10:24:23,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2020-10-13 10:24:23,404 INFO L87 Difference]: Start difference. First operand 224 states and 226 transitions. Second operand 26 states. [2020-10-13 10:24:25,030 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2020-10-13 10:24:26,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:26,855 INFO L93 Difference]: Finished difference Result 308 states and 310 transitions. [2020-10-13 10:24:26,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-13 10:24:26,855 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 194 [2020-10-13 10:24:26,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:26,857 INFO L225 Difference]: With dead ends: 308 [2020-10-13 10:24:26,857 INFO L226 Difference]: Without dead ends: 306 [2020-10-13 10:24:26,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=101, Invalid=1305, Unknown=0, NotChecked=0, Total=1406 [2020-10-13 10:24:26,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-13 10:24:26,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 232. [2020-10-13 10:24:26,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-13 10:24:26,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 234 transitions. [2020-10-13 10:24:26,890 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 234 transitions. Word has length 194 [2020-10-13 10:24:26,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:26,890 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 234 transitions. [2020-10-13 10:24:26,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-13 10:24:26,890 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 234 transitions. [2020-10-13 10:24:26,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-13 10:24:26,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:26,891 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 10, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 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 10:24:26,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-13 10:24:26,891 INFO L427 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:24:26,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:26,892 INFO L82 PathProgramCache]: Analyzing trace with hash -250791692, now seen corresponding path program 30 times [2020-10-13 10:24:26,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:26,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2008971719] [2020-10-13 10:24:26,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:27,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:27,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:31,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:31,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-13 10:24:31,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:31,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4910 [2020-10-13 10:24:31,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:31,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-13 10:24:31,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:31,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-13 10:24:31,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:32,828 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2020-10-13 10:24:33,230 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 89 [2020-10-13 10:24:33,506 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 99 [2020-10-13 10:24:33,768 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 106 [2020-10-13 10:24:34,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:34,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:34,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:34,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:34,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:34,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:34,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:34,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:34,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:34,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:34,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:34,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:35,414 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 760 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:35,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2008971719] [2020-10-13 10:24:35,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:35,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-13 10:24:35,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258829894] [2020-10-13 10:24:35,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-13 10:24:35,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:35,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-13 10:24:35,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=645, Unknown=0, NotChecked=0, Total=702 [2020-10-13 10:24:35,415 INFO L87 Difference]: Start difference. First operand 232 states and 234 transitions. Second operand 27 states. [2020-10-13 10:24:37,157 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-13 10:24:37,346 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-13 10:24:39,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:39,624 INFO L93 Difference]: Finished difference Result 407 states and 410 transitions. [2020-10-13 10:24:39,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 10:24:39,625 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 195 [2020-10-13 10:24:39,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:39,627 INFO L225 Difference]: With dead ends: 407 [2020-10-13 10:24:39,627 INFO L226 Difference]: Without dead ends: 405 [2020-10-13 10:24:39,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=129, Invalid=1511, Unknown=0, NotChecked=0, Total=1640 [2020-10-13 10:24:39,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2020-10-13 10:24:39,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 261. [2020-10-13 10:24:39,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-13 10:24:39,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 264 transitions. [2020-10-13 10:24:39,660 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 264 transitions. Word has length 195 [2020-10-13 10:24:39,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:39,660 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 264 transitions. [2020-10-13 10:24:39,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-13 10:24:39,660 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 264 transitions. [2020-10-13 10:24:39,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-13 10:24:39,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:39,662 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 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 10:24:39,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-13 10:24:39,662 INFO L427 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:24:39,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:39,662 INFO L82 PathProgramCache]: Analyzing trace with hash 870873331, now seen corresponding path program 31 times [2020-10-13 10:24:39,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:39,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417015425] [2020-10-13 10:24:39,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:39,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:39,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:44,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:44,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-13 10:24:44,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:44,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4573 [2020-10-13 10:24:44,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:44,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-13 10:24:44,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:44,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-13 10:24:44,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:45,243 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 80 [2020-10-13 10:24:45,444 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 89 [2020-10-13 10:24:45,700 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 98 [2020-10-13 10:24:46,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:24:46,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:46,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:46,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:46,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:24:46,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:46,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:24:46,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:46,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:24:46,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:24:46,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:24:46,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:47,169 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 40 proven. 779 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:24:47,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417015425] [2020-10-13 10:24:47,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:24:47,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-13 10:24:47,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580159522] [2020-10-13 10:24:47,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-13 10:24:47,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:24:47,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-13 10:24:47,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=649, Unknown=0, NotChecked=0, Total=702 [2020-10-13 10:24:47,170 INFO L87 Difference]: Start difference. First operand 261 states and 264 transitions. Second operand 27 states. [2020-10-13 10:24:51,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:24:51,658 INFO L93 Difference]: Finished difference Result 345 states and 348 transitions. [2020-10-13 10:24:51,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-13 10:24:51,659 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 202 [2020-10-13 10:24:51,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:24:51,660 INFO L225 Difference]: With dead ends: 345 [2020-10-13 10:24:51,661 INFO L226 Difference]: Without dead ends: 233 [2020-10-13 10:24:51,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=144, Invalid=2208, Unknown=0, NotChecked=0, Total=2352 [2020-10-13 10:24:51,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-13 10:24:51,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2020-10-13 10:24:51,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-10-13 10:24:51,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 235 transitions. [2020-10-13 10:24:51,685 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 235 transitions. Word has length 202 [2020-10-13 10:24:51,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:24:51,686 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 235 transitions. [2020-10-13 10:24:51,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-13 10:24:51,686 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 235 transitions. [2020-10-13 10:24:51,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-13 10:24:51,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:24:51,687 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 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 10:24:51,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-13 10:24:51,687 INFO L427 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:24:51,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:24:51,687 INFO L82 PathProgramCache]: Analyzing trace with hash -453711424, now seen corresponding path program 32 times [2020-10-13 10:24:51,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:24:51,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1017670201] [2020-10-13 10:24:51,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:24:51,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:24:52,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:24:56,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:24:56,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-13 10:24:56,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:24:56,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 10:24:56,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:24:56,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-13 10:24:56,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:24:56,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-13 10:24:56,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:24:57,918 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-13 10:24:58,180 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2020-10-13 10:24:58,441 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 87 [2020-10-13 10:24:58,751 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 106 [2020-10-13 10:24:59,237 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 116 [2020-10-13 10:24:59,672 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 123 [2020-10-13 10:25:00,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:00,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:00,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:00,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:00,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:00,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:00,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:25:00,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:00,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:00,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:00,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:00,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:01,195 INFO L134 CoverageAnalysis]: Checked inductivity of 830 backedges. 0 proven. 830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:25:01,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1017670201] [2020-10-13 10:25:01,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:25:01,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-13 10:25:01,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145866714] [2020-10-13 10:25:01,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-13 10:25:01,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:01,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-13 10:25:01,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=698, Unknown=0, NotChecked=0, Total=756 [2020-10-13 10:25:01,197 INFO L87 Difference]: Start difference. First operand 233 states and 235 transitions. Second operand 28 states. [2020-10-13 10:25:04,460 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2020-10-13 10:25:06,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:06,412 INFO L93 Difference]: Finished difference Result 317 states and 319 transitions. [2020-10-13 10:25:06,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-13 10:25:06,413 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 203 [2020-10-13 10:25:06,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:06,415 INFO L225 Difference]: With dead ends: 317 [2020-10-13 10:25:06,415 INFO L226 Difference]: Without dead ends: 315 [2020-10-13 10:25:06,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 8 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=146, Invalid=2110, Unknown=0, NotChecked=0, Total=2256 [2020-10-13 10:25:06,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-10-13 10:25:06,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 241. [2020-10-13 10:25:06,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-10-13 10:25:06,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 243 transitions. [2020-10-13 10:25:06,454 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 243 transitions. Word has length 203 [2020-10-13 10:25:06,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:06,454 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 243 transitions. [2020-10-13 10:25:06,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-13 10:25:06,454 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 243 transitions. [2020-10-13 10:25:06,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-13 10:25:06,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:06,455 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 11, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 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 10:25:06,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-13 10:25:06,455 INFO L427 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:25:06,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:06,456 INFO L82 PathProgramCache]: Analyzing trace with hash 2089864571, now seen corresponding path program 33 times [2020-10-13 10:25:06,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:06,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954784789] [2020-10-13 10:25:06,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:06,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:06,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:11,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:11,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-10-13 10:25:11,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:11,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 10:25:11,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:11,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-13 10:25:11,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:25:11,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 198 [2020-10-13 10:25:11,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:12,991 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 97 [2020-10-13 10:25:13,247 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 104 [2020-10-13 10:25:13,541 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 111 [2020-10-13 10:25:13,866 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 105 [2020-10-13 10:25:14,087 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 76 [2020-10-13 10:25:14,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:14,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:14,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:14,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:14,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:14,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:25:14,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:14,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:14,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:14,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:14,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:15,490 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 0 proven. 858 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:25:15,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954784789] [2020-10-13 10:25:15,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:25:15,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-13 10:25:15,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966782823] [2020-10-13 10:25:15,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-13 10:25:15,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:15,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-13 10:25:15,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=695, Unknown=0, NotChecked=0, Total=756 [2020-10-13 10:25:15,491 INFO L87 Difference]: Start difference. First operand 241 states and 243 transitions. Second operand 28 states. [2020-10-13 10:25:17,909 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-13 10:25:18,122 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-13 10:25:20,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:20,150 INFO L93 Difference]: Finished difference Result 315 states and 317 transitions. [2020-10-13 10:25:20,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-13 10:25:20,150 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 204 [2020-10-13 10:25:20,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:20,152 INFO L225 Difference]: With dead ends: 315 [2020-10-13 10:25:20,152 INFO L226 Difference]: Without dead ends: 313 [2020-10-13 10:25:20,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=143, Invalid=1927, Unknown=0, NotChecked=0, Total=2070 [2020-10-13 10:25:20,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-10-13 10:25:20,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 241. [2020-10-13 10:25:20,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-10-13 10:25:20,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 243 transitions. [2020-10-13 10:25:20,185 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 243 transitions. Word has length 204 [2020-10-13 10:25:20,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:20,185 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 243 transitions. [2020-10-13 10:25:20,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-13 10:25:20,185 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 243 transitions. [2020-10-13 10:25:20,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-13 10:25:20,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:20,186 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 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 10:25:20,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-13 10:25:20,186 INFO L427 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:25:20,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:20,187 INFO L82 PathProgramCache]: Analyzing trace with hash 884280972, now seen corresponding path program 34 times [2020-10-13 10:25:20,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:20,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076694998] [2020-10-13 10:25:20,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:20,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:20,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:25,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:25,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-13 10:25:25,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:25,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 10:25:25,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:25,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-13 10:25:25,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:25:25,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 205 [2020-10-13 10:25:25,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:26,478 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-13 10:25:26,728 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 89 [2020-10-13 10:25:26,996 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 98 [2020-10-13 10:25:27,321 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 107 [2020-10-13 10:25:28,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:28,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:28,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:28,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:28,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:28,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:28,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:25:28,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:28,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:28,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:28,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:28,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:29,064 INFO L134 CoverageAnalysis]: Checked inductivity of 908 backedges. 0 proven. 908 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:25:29,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076694998] [2020-10-13 10:25:29,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:25:29,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-13 10:25:29,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524478750] [2020-10-13 10:25:29,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-13 10:25:29,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:29,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-13 10:25:29,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2020-10-13 10:25:29,065 INFO L87 Difference]: Start difference. First operand 241 states and 243 transitions. Second operand 28 states. [2020-10-13 10:25:31,422 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 84 [2020-10-13 10:25:33,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:33,701 INFO L93 Difference]: Finished difference Result 333 states and 335 transitions. [2020-10-13 10:25:33,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-13 10:25:33,702 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 211 [2020-10-13 10:25:33,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:33,704 INFO L225 Difference]: With dead ends: 333 [2020-10-13 10:25:33,705 INFO L226 Difference]: Without dead ends: 331 [2020-10-13 10:25:33,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=113, Invalid=1609, Unknown=0, NotChecked=0, Total=1722 [2020-10-13 10:25:33,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-10-13 10:25:33,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 249. [2020-10-13 10:25:33,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-10-13 10:25:33,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 251 transitions. [2020-10-13 10:25:33,734 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 251 transitions. Word has length 211 [2020-10-13 10:25:33,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:33,734 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 251 transitions. [2020-10-13 10:25:33,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-13 10:25:33,735 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 251 transitions. [2020-10-13 10:25:33,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-13 10:25:33,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:33,736 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 11, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 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 10:25:33,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-13 10:25:33,736 INFO L427 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_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 10:25:33,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:33,736 INFO L82 PathProgramCache]: Analyzing trace with hash -38074553, now seen corresponding path program 35 times [2020-10-13 10:25:33,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:33,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019314332] [2020-10-13 10:25:33,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:33,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:34,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking...