/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:20:24,875 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:20:24,878 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:20:24,926 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:20:24,929 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:20:24,931 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:20:24,933 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:20:24,935 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:20:24,937 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:20:24,938 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:20:24,939 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:20:24,941 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:20:24,941 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:20:24,943 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:20:24,945 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:20:24,946 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:20:24,947 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:20:24,951 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:20:24,955 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:20:24,958 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:20:24,963 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:20:24,967 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:20:24,968 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:20:24,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:20:24,975 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:20:24,975 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:20:24,975 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:20:24,979 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:20:24,980 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:20:24,981 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:20:24,981 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:20:24,983 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:20:24,984 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:20:24,985 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:20:24,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:20:24,986 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:20:24,987 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:20:24,987 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:20:24,987 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:20:24,988 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:20:24,990 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:20:24,991 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 23:20:25,032 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:20:25,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:20:25,034 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:20:25,035 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:20:25,035 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:20:25,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:20:25,035 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:20:25,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:20:25,036 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:20:25,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:20:25,037 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:20:25,037 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:20:25,037 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:20:25,038 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:20:25,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:20:25,038 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:20:25,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:20:25,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:20:25,039 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:20:25,040 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:20:25,040 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:20:25,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:20:25,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:20:25,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:20:25,041 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:20:25,041 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:20:25,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:20:25,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:20:25,041 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:20:25,041 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:20:25,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:20:25,366 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:20:25,370 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:20:25,371 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:20:25,372 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:20:25,373 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel-2.i [2020-10-14 23:20:25,439 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af87f16c1/ccf576293c0948c8bdb0daf0217e7fbc/FLAG7dbb4be59 [2020-10-14 23:20:25,983 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:20:25,984 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-rb-sentinel-2.i [2020-10-14 23:20:25,996 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af87f16c1/ccf576293c0948c8bdb0daf0217e7fbc/FLAG7dbb4be59 [2020-10-14 23:20:26,283 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af87f16c1/ccf576293c0948c8bdb0daf0217e7fbc [2020-10-14 23:20:26,292 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:20:26,294 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:20:26,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:20:26,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:20:26,298 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:20:26,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:20:26" (1/1) ... [2020-10-14 23:20:26,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38dfc093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:26, skipping insertion in model container [2020-10-14 23:20:26,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:20:26" (1/1) ... [2020-10-14 23:20:26,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:20:26,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:20:26,788 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:20:26,805 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:20:26,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:20:26,904 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:20:26,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:26 WrapperNode [2020-10-14 23:20:26,905 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:20:26,905 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:20:26,906 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:20:26,906 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:20:26,919 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:26" (1/1) ... [2020-10-14 23:20:26,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:26" (1/1) ... [2020-10-14 23:20:26,937 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:26" (1/1) ... [2020-10-14 23:20:26,938 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:26" (1/1) ... [2020-10-14 23:20:26,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:26" (1/1) ... [2020-10-14 23:20:26,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:26" (1/1) ... [2020-10-14 23:20:26,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:26" (1/1) ... [2020-10-14 23:20:26,975 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:20:26,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:20:26,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:20:26,976 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:20:26,977 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:20:27,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:20:27,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:20:27,048 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:20:27,048 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 23:20:27,048 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 23:20:27,048 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 23:20:27,049 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 23:20:27,050 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 23:20:27,050 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 23:20:27,050 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 23:20:27,051 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 23:20:27,051 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 23:20:27,051 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 23:20:27,051 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 23:20:27,051 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 23:20:27,052 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 23:20:27,052 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 23:20:27,052 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 23:20:27,053 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 23:20:27,053 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 23:20:27,053 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 23:20:27,053 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 23:20:27,054 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 23:20:27,054 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 23:20:27,054 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 23:20:27,055 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 23:20:27,055 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 23:20:27,055 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 23:20:27,055 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 23:20:27,056 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 23:20:27,056 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 23:20:27,056 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 23:20:27,056 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 23:20:27,056 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 23:20:27,056 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 23:20:27,056 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 23:20:27,057 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 23:20:27,057 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 23:20:27,057 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 23:20:27,058 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 23:20:27,059 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 23:20:27,059 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 23:20:27,059 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 23:20:27,059 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 23:20:27,059 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 23:20:27,059 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 23:20:27,059 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 23:20:27,060 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 23:20:27,060 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 23:20:27,060 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 23:20:27,060 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 23:20:27,061 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 23:20:27,061 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 23:20:27,061 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 23:20:27,061 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 23:20:27,062 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 23:20:27,062 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 23:20:27,062 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 23:20:27,062 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 23:20:27,062 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 23:20:27,062 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 23:20:27,062 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 23:20:27,063 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 23:20:27,063 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 23:20:27,063 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 23:20:27,064 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 23:20:27,064 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:20:27,065 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 23:20:27,065 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 23:20:27,066 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 23:20:27,066 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 23:20:27,067 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 23:20:27,067 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 23:20:27,068 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 23:20:27,068 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 23:20:27,068 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 23:20:27,068 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 23:20:27,068 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 23:20:27,068 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 23:20:27,068 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 23:20:27,069 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 23:20:27,069 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 23:20:27,069 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 23:20:27,069 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 23:20:27,069 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 23:20:27,069 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 23:20:27,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 23:20:27,070 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 23:20:27,070 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 23:20:27,070 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 23:20:27,070 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 23:20:27,070 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 23:20:27,070 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 23:20:27,070 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 23:20:27,071 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 23:20:27,071 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 23:20:27,071 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 23:20:27,071 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 23:20:27,071 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 23:20:27,071 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 23:20:27,071 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 23:20:27,072 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 23:20:27,072 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 23:20:27,072 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 23:20:27,072 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 23:20:27,072 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 23:20:27,072 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:20:27,072 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:20:27,072 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:20:27,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 23:20:27,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 23:20:27,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:20:27,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 23:20:27,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:20:27,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:20:27,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:20:27,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:20:27,721 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:20:27,722 INFO L295 CfgBuilder]: Removed 17 assume(true) statements. [2020-10-14 23:20:27,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:20:27 BoogieIcfgContainer [2020-10-14 23:20:27,726 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:20:27,728 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:20:27,728 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:20:27,731 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:20:27,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:20:26" (1/3) ... [2020-10-14 23:20:27,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@712749d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:20:27, skipping insertion in model container [2020-10-14 23:20:27,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:26" (2/3) ... [2020-10-14 23:20:27,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@712749d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:20:27, skipping insertion in model container [2020-10-14 23:20:27,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:20:27" (3/3) ... [2020-10-14 23:20:27,735 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-2.i [2020-10-14 23:20:27,746 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:20:27,754 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-10-14 23:20:27,770 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-14 23:20:27,795 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:20:27,796 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:20:27,796 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:20:27,796 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:20:27,797 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:20:27,797 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:20:27,797 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:20:27,797 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:20:27,819 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-10-14 23:20:27,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-14 23:20:27,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:27,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:27,827 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:27,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:27,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1255802584, now seen corresponding path program 1 times [2020-10-14 23:20:27,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:27,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [283914440] [2020-10-14 23:20:27,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:28,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:28,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:28,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:28,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:28,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 23:20:28,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:20:28,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 376 [2020-10-14 23:20:28,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:28,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:28,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:20:28,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:28,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 23:20:28,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:20:28,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:28,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:28,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:28,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:28,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:28,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:28,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:20:28,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:28,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:28,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:28,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:28,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:28,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:28,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:28,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [283914440] [2020-10-14 23:20:28,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:20:28,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 23:20:28,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583062791] [2020-10-14 23:20:28,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 23:20:28,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:28,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 23:20:28,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:20:28,527 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 5 states. [2020-10-14 23:20:28,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:28,789 INFO L93 Difference]: Finished difference Result 104 states and 170 transitions. [2020-10-14 23:20:28,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 23:20:28,791 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-14 23:20:28,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:28,803 INFO L225 Difference]: With dead ends: 104 [2020-10-14 23:20:28,803 INFO L226 Difference]: Without dead ends: 49 [2020-10-14 23:20:28,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:20:28,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-14 23:20:28,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2020-10-14 23:20:28,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-14 23:20:28,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2020-10-14 23:20:28,854 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 10 [2020-10-14 23:20:28,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:28,854 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2020-10-14 23:20:28,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 23:20:28,855 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2020-10-14 23:20:28,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-14 23:20:28,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:28,856 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:28,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:20:28,856 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:28,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:28,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1890143313, now seen corresponding path program 1 times [2020-10-14 23:20:28,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:28,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180175341] [2020-10-14 23:20:28,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:28,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:28,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:29,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:29,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 23:20:29,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:29,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-14 23:20:29,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:29,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:29,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:20:29,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 23:20:29,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 23:20:29,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:20:29,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:29,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:29,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:29,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:29,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:29,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:29,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:20:29,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:29,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:29,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:29,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:29,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:29,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:29,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:29,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180175341] [2020-10-14 23:20:29,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:20:29,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 23:20:29,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663008429] [2020-10-14 23:20:29,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 23:20:29,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:29,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 23:20:29,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:20:29,164 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 5 states. [2020-10-14 23:20:29,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:29,328 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2020-10-14 23:20:29,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 23:20:29,328 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-14 23:20:29,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:29,330 INFO L225 Difference]: With dead ends: 43 [2020-10-14 23:20:29,330 INFO L226 Difference]: Without dead ends: 41 [2020-10-14 23:20:29,331 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:20:29,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-14 23:20:29,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-14 23:20:29,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 23:20:29,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2020-10-14 23:20:29,339 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 12 [2020-10-14 23:20:29,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:29,339 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2020-10-14 23:20:29,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 23:20:29,340 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2020-10-14 23:20:29,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-14 23:20:29,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:29,341 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:29,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:20:29,342 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:29,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:29,343 INFO L82 PathProgramCache]: Analyzing trace with hash 290038970, now seen corresponding path program 1 times [2020-10-14 23:20:29,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:29,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447512505] [2020-10-14 23:20:29,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:29,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:29,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:29,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:29,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:20:29,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:29,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 23:20:29,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:29,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:29,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:20:29,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:29,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:20:29,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:29,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:29,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:29,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:29,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:29,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:29,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:29,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:20:29,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:29,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:29,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:29,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:29,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:29,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:29,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:29,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [447512505] [2020-10-14 23:20:29,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:20:29,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:20:29,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761819391] [2020-10-14 23:20:29,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:20:29,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:29,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:20:29,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:20:29,536 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 6 states. [2020-10-14 23:20:29,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:29,795 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2020-10-14 23:20:29,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:20:29,796 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-14 23:20:29,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:29,797 INFO L225 Difference]: With dead ends: 66 [2020-10-14 23:20:29,797 INFO L226 Difference]: Without dead ends: 64 [2020-10-14 23:20:29,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:20:29,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-14 23:20:29,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 48. [2020-10-14 23:20:29,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-14 23:20:29,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-10-14 23:20:29,815 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 14 [2020-10-14 23:20:29,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:29,815 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-10-14 23:20:29,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:20:29,815 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-10-14 23:20:29,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-14 23:20:29,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:29,817 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:29,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:20:29,818 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:29,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:29,818 INFO L82 PathProgramCache]: Analyzing trace with hash 2060721718, now seen corresponding path program 1 times [2020-10-14 23:20:29,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:29,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291632004] [2020-10-14 23:20:29,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:29,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:29,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:30,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:30,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:20:30,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:30,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-14 23:20:30,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:30,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:30,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:20:30,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 23:20:30,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:20:30,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:30,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:30,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:30,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:30,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:30,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:30,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:30,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:20:30,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:30,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:30,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:30,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:30,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:30,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:30,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:30,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291632004] [2020-10-14 23:20:30,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:20:30,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 23:20:30,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647107456] [2020-10-14 23:20:30,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 23:20:30,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:30,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 23:20:30,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:20:30,128 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 5 states. [2020-10-14 23:20:30,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:30,323 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2020-10-14 23:20:30,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 23:20:30,324 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-14 23:20:30,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:30,325 INFO L225 Difference]: With dead ends: 48 [2020-10-14 23:20:30,325 INFO L226 Difference]: Without dead ends: 46 [2020-10-14 23:20:30,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:20:30,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-14 23:20:30,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-10-14 23:20:30,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-14 23:20:30,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-10-14 23:20:30,333 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 15 [2020-10-14 23:20:30,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:30,333 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-10-14 23:20:30,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 23:20:30,333 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-10-14 23:20:30,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 23:20:30,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:30,334 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:30,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:20:30,335 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:30,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:30,335 INFO L82 PathProgramCache]: Analyzing trace with hash 373775322, now seen corresponding path program 1 times [2020-10-14 23:20:30,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:30,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181459732] [2020-10-14 23:20:30,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:30,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:30,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:30,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:30,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 23:20:30,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:30,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-14 23:20:30,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:30,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:30,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:20:30,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:30,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 23:20:30,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:30,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:30,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:30,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:30,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:30,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:30,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:30,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:20:30,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:30,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:30,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:30,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:30,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:30,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:30,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:30,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181459732] [2020-10-14 23:20:30,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:20:30,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 23:20:30,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835784681] [2020-10-14 23:20:30,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 23:20:30,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:30,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 23:20:30,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:20:30,643 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 5 states. [2020-10-14 23:20:30,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:30,771 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2020-10-14 23:20:30,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 23:20:30,771 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-14 23:20:30,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:30,772 INFO L225 Difference]: With dead ends: 46 [2020-10-14 23:20:30,772 INFO L226 Difference]: Without dead ends: 44 [2020-10-14 23:20:30,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:20:30,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-14 23:20:30,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-10-14 23:20:30,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-14 23:20:30,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2020-10-14 23:20:30,779 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 17 [2020-10-14 23:20:30,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:30,779 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2020-10-14 23:20:30,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 23:20:30,779 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2020-10-14 23:20:30,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 23:20:30,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:30,780 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:30,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:20:30,781 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:30,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:30,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1568846049, now seen corresponding path program 1 times [2020-10-14 23:20:30,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:30,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149035777] [2020-10-14 23:20:30,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:30,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:30,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:30,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:30,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:30,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 23:20:30,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:20:30,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-14 23:20:30,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:30,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:30,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:20:30,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:30,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 23:20:30,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:20:31,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:31,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:31,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:31,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:31,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:31,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:31,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:20:31,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:31,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:31,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:31,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:31,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:31,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:31,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:31,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149035777] [2020-10-14 23:20:31,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:20:31,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:20:31,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715261711] [2020-10-14 23:20:31,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:20:31,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:31,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:20:31,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:20:31,067 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 6 states. [2020-10-14 23:20:31,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:31,270 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2020-10-14 23:20:31,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:20:31,271 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-10-14 23:20:31,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:31,272 INFO L225 Difference]: With dead ends: 72 [2020-10-14 23:20:31,272 INFO L226 Difference]: Without dead ends: 60 [2020-10-14 23:20:31,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:20:31,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-14 23:20:31,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 47. [2020-10-14 23:20:31,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-14 23:20:31,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-14 23:20:31,283 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 18 [2020-10-14 23:20:31,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:31,284 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-14 23:20:31,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:20:31,284 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-14 23:20:31,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 23:20:31,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:31,287 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:31,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 23:20:31,288 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:31,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:31,288 INFO L82 PathProgramCache]: Analyzing trace with hash 777661568, now seen corresponding path program 1 times [2020-10-14 23:20:31,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:31,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416032412] [2020-10-14 23:20:31,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:31,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:31,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:31,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:31,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:31,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 23:20:31,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:20:31,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-14 23:20:31,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:31,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:31,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:20:31,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:31,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:20:31,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:31,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:31,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:31,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:31,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:31,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:31,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:31,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:20:31,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:31,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:31,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:31,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:31,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:31,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:20:31,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:31,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416032412] [2020-10-14 23:20:31,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:20:31,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 23:20:31,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750472774] [2020-10-14 23:20:31,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:20:31,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:31,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:20:31,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:20:31,541 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 6 states. [2020-10-14 23:20:31,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:31,831 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2020-10-14 23:20:31,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:20:31,831 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-14 23:20:31,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:31,832 INFO L225 Difference]: With dead ends: 61 [2020-10-14 23:20:31,833 INFO L226 Difference]: Without dead ends: 39 [2020-10-14 23:20:31,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:20:31,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-14 23:20:31,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-14 23:20:31,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-14 23:20:31,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-10-14 23:20:31,838 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 21 [2020-10-14 23:20:31,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:31,838 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-10-14 23:20:31,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:20:31,839 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-10-14 23:20:31,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 23:20:31,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:31,840 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] [2020-10-14 23:20:31,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 23:20:31,840 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:31,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:31,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1056872398, now seen corresponding path program 1 times [2020-10-14 23:20:31,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:31,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1104560445] [2020-10-14 23:20:31,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:31,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:31,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:32,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:32,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:20:32,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:32,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-14 23:20:32,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:32,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:32,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:20:32,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:32,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 23:20:32,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:32,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:32,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:32,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:32,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:32,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:32,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:32,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:20:32,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:32,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:32,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:32,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:32,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:32,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:32,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:32,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1104560445] [2020-10-14 23:20:32,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:20:32,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 23:20:32,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479944362] [2020-10-14 23:20:32,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:20:32,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:32,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:20:32,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:20:32,333 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 8 states. [2020-10-14 23:20:32,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:32,766 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2020-10-14 23:20:32,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:20:32,767 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-10-14 23:20:32,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:32,768 INFO L225 Difference]: With dead ends: 42 [2020-10-14 23:20:32,768 INFO L226 Difference]: Without dead ends: 40 [2020-10-14 23:20:32,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:20:32,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-14 23:20:32,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2020-10-14 23:20:32,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-14 23:20:32,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2020-10-14 23:20:32,773 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 25 [2020-10-14 23:20:32,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:32,773 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2020-10-14 23:20:32,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 23:20:32,774 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2020-10-14 23:20:32,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-14 23:20:32,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:32,775 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] [2020-10-14 23:20:32,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 23:20:32,775 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:32,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:32,776 INFO L82 PathProgramCache]: Analyzing trace with hash 473692249, now seen corresponding path program 1 times [2020-10-14 23:20:32,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:32,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [881987309] [2020-10-14 23:20:32,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:32,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:32,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:32,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:33,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:34,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:34,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 23:20:34,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:20:34,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1296 [2020-10-14 23:20:34,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:34,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:34,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:20:34,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:34,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 23:20:34,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:20:34,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:34,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:34,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:34,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:34,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:34,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:20:34,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:34,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:34,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:34,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:34,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:34,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:20:34,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:34,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [881987309] [2020-10-14 23:20:34,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:20:34,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 23:20:34,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294847047] [2020-10-14 23:20:34,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:20:34,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:34,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:20:34,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:20:34,285 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 8 states. [2020-10-14 23:20:34,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:34,562 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2020-10-14 23:20:34,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:20:34,562 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-10-14 23:20:34,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:34,563 INFO L225 Difference]: With dead ends: 52 [2020-10-14 23:20:34,564 INFO L226 Difference]: Without dead ends: 40 [2020-10-14 23:20:34,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:20:34,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-14 23:20:34,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-14 23:20:34,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-14 23:20:34,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-10-14 23:20:34,569 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 29 [2020-10-14 23:20:34,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:34,569 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-10-14 23:20:34,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 23:20:34,570 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-10-14 23:20:34,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 23:20:34,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:34,571 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:34,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 23:20:34,571 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:34,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:34,572 INFO L82 PathProgramCache]: Analyzing trace with hash -377613816, now seen corresponding path program 1 times [2020-10-14 23:20:34,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:34,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633392852] [2020-10-14 23:20:34,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:34,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:34,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:34,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:34,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 23:20:34,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:34,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-10-14 23:20:34,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:34,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:34,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:20:34,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:34,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 23:20:34,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:20:35,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:35,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:35,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:35,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:35,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:35,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:35,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:20:35,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:35,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:35,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:35,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:35,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:35,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:35,113 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:35,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [633392852] [2020-10-14 23:20:35,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:20:35,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:20:35,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323805199] [2020-10-14 23:20:35,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:20:35,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:35,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:20:35,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:20:35,116 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 9 states. [2020-10-14 23:20:35,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:35,997 INFO L93 Difference]: Finished difference Result 120 states and 132 transitions. [2020-10-14 23:20:35,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:20:35,997 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-10-14 23:20:35,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:35,999 INFO L225 Difference]: With dead ends: 120 [2020-10-14 23:20:35,999 INFO L226 Difference]: Without dead ends: 118 [2020-10-14 23:20:36,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:20:36,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-14 23:20:36,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 62. [2020-10-14 23:20:36,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-14 23:20:36,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2020-10-14 23:20:36,016 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 32 [2020-10-14 23:20:36,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:36,019 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2020-10-14 23:20:36,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:20:36,019 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2020-10-14 23:20:36,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 23:20:36,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:36,020 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:36,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 23:20:36,022 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:36,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:36,023 INFO L82 PathProgramCache]: Analyzing trace with hash -243600310, now seen corresponding path program 1 times [2020-10-14 23:20:36,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:36,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [408575558] [2020-10-14 23:20:36,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:36,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:36,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:36,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 23:20:36,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:36,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-14 23:20:36,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:36,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:36,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:20:36,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:36,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:20:36,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:20:36,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:36,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:36,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:36,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:36,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:36,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:20:36,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:36,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:36,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:36,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:36,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:36,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:36,552 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:36,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [408575558] [2020-10-14 23:20:36,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:20:36,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:20:36,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991101494] [2020-10-14 23:20:36,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:20:36,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:36,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:20:36,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:20:36,555 INFO L87 Difference]: Start difference. First operand 62 states and 68 transitions. Second operand 9 states. [2020-10-14 23:20:37,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:37,118 INFO L93 Difference]: Finished difference Result 108 states and 118 transitions. [2020-10-14 23:20:37,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:20:37,118 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-10-14 23:20:37,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:37,121 INFO L225 Difference]: With dead ends: 108 [2020-10-14 23:20:37,121 INFO L226 Difference]: Without dead ends: 96 [2020-10-14 23:20:37,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:20:37,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-14 23:20:37,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 81. [2020-10-14 23:20:37,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-14 23:20:37,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 88 transitions. [2020-10-14 23:20:37,131 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 88 transitions. Word has length 32 [2020-10-14 23:20:37,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:37,131 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 88 transitions. [2020-10-14 23:20:37,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:20:37,131 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 88 transitions. [2020-10-14 23:20:37,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 23:20:37,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:37,133 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:37,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 23:20:37,133 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:37,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:37,134 INFO L82 PathProgramCache]: Analyzing trace with hash 145286649, now seen corresponding path program 2 times [2020-10-14 23:20:37,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:37,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757064966] [2020-10-14 23:20:37,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:37,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:37,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:37,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:37,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:37,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 23:20:37,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:20:37,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 824 [2020-10-14 23:20:37,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:37,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:37,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:20:37,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:37,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:20:37,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:38,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:38,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:38,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:38,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:38,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:38,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:38,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:20:38,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:38,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:38,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:38,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:38,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:38,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:38,145 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:38,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757064966] [2020-10-14 23:20:38,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:20:38,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:20:38,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047913621] [2020-10-14 23:20:38,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:20:38,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:38,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:20:38,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:20:38,148 INFO L87 Difference]: Start difference. First operand 81 states and 88 transitions. Second operand 9 states. [2020-10-14 23:20:38,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:38,622 INFO L93 Difference]: Finished difference Result 105 states and 114 transitions. [2020-10-14 23:20:38,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 23:20:38,623 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-10-14 23:20:38,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:38,624 INFO L225 Difference]: With dead ends: 105 [2020-10-14 23:20:38,624 INFO L226 Difference]: Without dead ends: 93 [2020-10-14 23:20:38,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:20:38,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-14 23:20:38,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 81. [2020-10-14 23:20:38,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-14 23:20:38,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2020-10-14 23:20:38,637 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 35 [2020-10-14 23:20:38,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:38,638 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 87 transitions. [2020-10-14 23:20:38,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:20:38,638 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2020-10-14 23:20:38,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 23:20:38,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:38,641 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:38,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 23:20:38,641 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:38,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:38,642 INFO L82 PathProgramCache]: Analyzing trace with hash -969799515, now seen corresponding path program 1 times [2020-10-14 23:20:38,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:38,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321223163] [2020-10-14 23:20:38,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:38,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:38,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:39,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:39,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 23:20:39,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:39,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-10-14 23:20:39,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:39,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:39,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:20:39,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:39,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 23:20:39,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:20:39,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:39,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:39,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:39,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:39,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:39,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:39,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:20:39,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:39,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:39,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:39,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:39,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:39,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:39,247 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:39,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321223163] [2020-10-14 23:20:39,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:20:39,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 23:20:39,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671412173] [2020-10-14 23:20:39,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 23:20:39,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:39,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 23:20:39,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:20:39,251 INFO L87 Difference]: Start difference. First operand 81 states and 87 transitions. Second operand 10 states. [2020-10-14 23:20:39,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:39,982 INFO L93 Difference]: Finished difference Result 103 states and 110 transitions. [2020-10-14 23:20:39,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:20:39,983 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2020-10-14 23:20:39,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:39,984 INFO L225 Difference]: With dead ends: 103 [2020-10-14 23:20:39,985 INFO L226 Difference]: Without dead ends: 101 [2020-10-14 23:20:39,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:20:39,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-14 23:20:39,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 84. [2020-10-14 23:20:39,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-14 23:20:39,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 90 transitions. [2020-10-14 23:20:39,999 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 90 transitions. Word has length 35 [2020-10-14 23:20:39,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:39,999 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 90 transitions. [2020-10-14 23:20:39,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 23:20:39,999 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 90 transitions. [2020-10-14 23:20:40,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 23:20:40,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:40,001 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:40,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 23:20:40,001 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:40,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:40,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1777941385, now seen corresponding path program 2 times [2020-10-14 23:20:40,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:40,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663604101] [2020-10-14 23:20:40,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:40,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:40,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:40,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:40,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:40,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 23:20:40,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:20:40,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-14 23:20:40,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:40,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:40,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:20:40,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:40,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 23:20:40,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:40,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:40,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:40,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:40,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:40,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:40,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:40,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:20:40,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:40,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:40,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:40,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:40,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:40,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:40,398 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:40,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [663604101] [2020-10-14 23:20:40,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:20:40,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:20:40,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426064519] [2020-10-14 23:20:40,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:20:40,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:40,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:20:40,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:20:40,400 INFO L87 Difference]: Start difference. First operand 84 states and 90 transitions. Second operand 9 states. [2020-10-14 23:20:40,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:40,857 INFO L93 Difference]: Finished difference Result 100 states and 107 transitions. [2020-10-14 23:20:40,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:20:40,857 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-10-14 23:20:40,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:40,858 INFO L225 Difference]: With dead ends: 100 [2020-10-14 23:20:40,858 INFO L226 Difference]: Without dead ends: 75 [2020-10-14 23:20:40,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:20:40,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-14 23:20:40,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-10-14 23:20:40,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-14 23:20:40,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2020-10-14 23:20:40,866 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 35 [2020-10-14 23:20:40,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:40,866 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2020-10-14 23:20:40,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:20:40,867 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2020-10-14 23:20:40,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 23:20:40,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:40,868 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:40,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 23:20:40,868 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:40,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:40,869 INFO L82 PathProgramCache]: Analyzing trace with hash -233815650, now seen corresponding path program 1 times [2020-10-14 23:20:40,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:40,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955873434] [2020-10-14 23:20:40,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:40,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:40,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:41,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:41,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:41,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 23:20:41,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:20:41,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 738 [2020-10-14 23:20:41,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:41,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:41,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:20:41,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:41,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 23:20:41,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:20:41,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:41,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:41,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:41,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:41,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:41,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:41,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:20:41,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:41,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:41,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:41,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:41,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:41,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:20:41,777 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:41,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1955873434] [2020-10-14 23:20:41,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:20:41,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 23:20:41,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243758380] [2020-10-14 23:20:41,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 23:20:41,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:41,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 23:20:41,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:20:41,779 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand 10 states. [2020-10-14 23:20:42,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:42,549 INFO L93 Difference]: Finished difference Result 91 states and 98 transitions. [2020-10-14 23:20:42,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:20:42,550 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-10-14 23:20:42,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:42,551 INFO L225 Difference]: With dead ends: 91 [2020-10-14 23:20:42,551 INFO L226 Difference]: Without dead ends: 61 [2020-10-14 23:20:42,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:20:42,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-14 23:20:42,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 50. [2020-10-14 23:20:42,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-14 23:20:42,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-10-14 23:20:42,556 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 40 [2020-10-14 23:20:42,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:42,557 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-10-14 23:20:42,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 23:20:42,557 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-10-14 23:20:42,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 23:20:42,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:42,558 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:42,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 23:20:42,558 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:42,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:42,559 INFO L82 PathProgramCache]: Analyzing trace with hash -372709504, now seen corresponding path program 3 times [2020-10-14 23:20:42,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:42,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962120654] [2020-10-14 23:20:42,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:42,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:42,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:43,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:43,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 23:20:43,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:43,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 728 [2020-10-14 23:20:43,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:43,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:43,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:20:43,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:43,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 23:20:43,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:20:43,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:43,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:43,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:43,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:43,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:43,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:43,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:20:43,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:43,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:43,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:43,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:43,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:43,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:43,647 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:43,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962120654] [2020-10-14 23:20:43,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:20:43,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:20:43,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903546921] [2020-10-14 23:20:43,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:20:43,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:43,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:20:43,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:20:43,649 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 11 states. [2020-10-14 23:20:44,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:44,390 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2020-10-14 23:20:44,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:20:44,390 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2020-10-14 23:20:44,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:44,392 INFO L225 Difference]: With dead ends: 88 [2020-10-14 23:20:44,392 INFO L226 Difference]: Without dead ends: 86 [2020-10-14 23:20:44,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:20:44,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-14 23:20:44,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 54. [2020-10-14 23:20:44,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-14 23:20:44,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-10-14 23:20:44,398 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 43 [2020-10-14 23:20:44,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:44,399 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-10-14 23:20:44,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:20:44,399 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-10-14 23:20:44,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 23:20:44,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:44,400 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:44,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 23:20:44,400 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:44,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:44,400 INFO L82 PathProgramCache]: Analyzing trace with hash 220757377, now seen corresponding path program 4 times [2020-10-14 23:20:44,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:44,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642437889] [2020-10-14 23:20:44,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:44,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:44,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:45,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:45,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:47,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:47,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 23:20:47,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:20:47,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2797 [2020-10-14 23:20:47,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:47,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:47,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:20:47,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:47,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 23:20:47,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:20:47,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:47,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:47,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:47,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:47,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:47,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:47,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:20:47,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:47,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:47,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:47,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:47,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:47,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:47,815 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:47,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642437889] [2020-10-14 23:20:47,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:20:47,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:20:47,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679400972] [2020-10-14 23:20:47,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:20:47,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:47,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:20:47,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:20:47,819 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 11 states. [2020-10-14 23:20:48,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:48,955 INFO L93 Difference]: Finished difference Result 123 states and 135 transitions. [2020-10-14 23:20:48,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:20:48,956 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 46 [2020-10-14 23:20:48,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:48,956 INFO L225 Difference]: With dead ends: 123 [2020-10-14 23:20:48,957 INFO L226 Difference]: Without dead ends: 111 [2020-10-14 23:20:48,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:20:48,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-14 23:20:48,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 86. [2020-10-14 23:20:48,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-14 23:20:48,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 93 transitions. [2020-10-14 23:20:48,965 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 93 transitions. Word has length 46 [2020-10-14 23:20:48,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:48,966 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 93 transitions. [2020-10-14 23:20:48,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:20:48,966 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 93 transitions. [2020-10-14 23:20:48,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 23:20:48,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:48,967 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:48,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 23:20:48,967 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:48,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:48,967 INFO L82 PathProgramCache]: Analyzing trace with hash -894328787, now seen corresponding path program 2 times [2020-10-14 23:20:48,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:48,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24705342] [2020-10-14 23:20:48,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:49,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:49,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:50,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:50,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 23:20:50,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:50,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1115 [2020-10-14 23:20:50,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:50,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:50,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:20:50,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:50,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 23:20:50,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:20:50,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:50,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:50,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:50,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:50,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:50,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:50,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:20:50,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:50,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:50,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:50,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:50,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:50,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:20:50,693 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:50,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24705342] [2020-10-14 23:20:50,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:20:50,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:20:50,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074967266] [2020-10-14 23:20:50,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:20:50,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:50,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:20:50,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:20:50,702 INFO L87 Difference]: Start difference. First operand 86 states and 93 transitions. Second operand 12 states. [2020-10-14 23:20:51,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:51,918 INFO L93 Difference]: Finished difference Result 140 states and 152 transitions. [2020-10-14 23:20:51,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:20:51,919 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2020-10-14 23:20:51,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:51,920 INFO L225 Difference]: With dead ends: 140 [2020-10-14 23:20:51,920 INFO L226 Difference]: Without dead ends: 138 [2020-10-14 23:20:51,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:20:51,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-14 23:20:51,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 112. [2020-10-14 23:20:51,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-14 23:20:51,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 121 transitions. [2020-10-14 23:20:51,931 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 121 transitions. Word has length 46 [2020-10-14 23:20:51,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:51,931 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 121 transitions. [2020-10-14 23:20:51,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:20:51,932 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 121 transitions. [2020-10-14 23:20:51,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 23:20:51,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:51,934 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:51,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 23:20:51,934 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:51,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:51,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1250116675, now seen corresponding path program 1 times [2020-10-14 23:20:51,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:51,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [947167046] [2020-10-14 23:20:51,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:51,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:51,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:52,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:52,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 23:20:52,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:52,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 590 [2020-10-14 23:20:52,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:52,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:52,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:20:52,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:52,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 23:20:52,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:20:52,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:52,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:52,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:52,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:52,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:52,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:52,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:20:52,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:52,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:52,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:52,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:52,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:52,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:20:52,851 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:52,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [947167046] [2020-10-14 23:20:52,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:20:52,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:20:52,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049986034] [2020-10-14 23:20:52,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:20:52,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:52,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:20:52,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:20:52,853 INFO L87 Difference]: Start difference. First operand 112 states and 121 transitions. Second operand 11 states. [2020-10-14 23:20:54,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:54,021 INFO L93 Difference]: Finished difference Result 224 states and 245 transitions. [2020-10-14 23:20:54,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:20:54,022 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 46 [2020-10-14 23:20:54,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:54,024 INFO L225 Difference]: With dead ends: 224 [2020-10-14 23:20:54,024 INFO L226 Difference]: Without dead ends: 222 [2020-10-14 23:20:54,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:20:54,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-14 23:20:54,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 134. [2020-10-14 23:20:54,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-14 23:20:54,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 146 transitions. [2020-10-14 23:20:54,034 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 146 transitions. Word has length 46 [2020-10-14 23:20:54,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:54,034 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 146 transitions. [2020-10-14 23:20:54,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:20:54,035 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 146 transitions. [2020-10-14 23:20:54,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 23:20:54,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:54,036 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] [2020-10-14 23:20:54,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 23:20:54,036 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:54,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:54,036 INFO L82 PathProgramCache]: Analyzing trace with hash 135030511, now seen corresponding path program 1 times [2020-10-14 23:20:54,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:54,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [579692408] [2020-10-14 23:20:54,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:54,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:54,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:54,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 23:20:54,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:54,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 692 [2020-10-14 23:20:54,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:54,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:54,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:20:54,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:54,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 23:20:54,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:55,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:55,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:55,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:55,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:55,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:55,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:55,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:20:55,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:55,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:55,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:55,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:55,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:55,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:55,366 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:55,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [579692408] [2020-10-14 23:20:55,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:20:55,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:20:55,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763027056] [2020-10-14 23:20:55,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:20:55,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:55,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:20:55,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:20:55,370 INFO L87 Difference]: Start difference. First operand 134 states and 146 transitions. Second operand 11 states. [2020-10-14 23:20:56,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:56,669 INFO L93 Difference]: Finished difference Result 164 states and 179 transitions. [2020-10-14 23:20:56,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:20:56,670 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 46 [2020-10-14 23:20:56,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:56,671 INFO L225 Difference]: With dead ends: 164 [2020-10-14 23:20:56,671 INFO L226 Difference]: Without dead ends: 151 [2020-10-14 23:20:56,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:20:56,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-14 23:20:56,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 137. [2020-10-14 23:20:56,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-14 23:20:56,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 148 transitions. [2020-10-14 23:20:56,681 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 148 transitions. Word has length 46 [2020-10-14 23:20:56,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:56,681 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 148 transitions. [2020-10-14 23:20:56,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:20:56,681 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 148 transitions. [2020-10-14 23:20:56,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 23:20:56,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:56,682 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:56,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 23:20:56,683 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:56,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:56,683 INFO L82 PathProgramCache]: Analyzing trace with hash -673111359, now seen corresponding path program 3 times [2020-10-14 23:20:56,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:56,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [68002155] [2020-10-14 23:20:56,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:56,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:56,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:57,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:57,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 23:20:57,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:57,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 399 [2020-10-14 23:20:57,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:57,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:57,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:20:57,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:57,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 23:20:57,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:57,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:57,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:57,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:57,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:57,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:57,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:57,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:20:57,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:57,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:57,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:57,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:57,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:57,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:20:57,434 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:57,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [68002155] [2020-10-14 23:20:57,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:20:57,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:20:57,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160426981] [2020-10-14 23:20:57,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:20:57,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:57,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:20:57,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:20:57,436 INFO L87 Difference]: Start difference. First operand 137 states and 148 transitions. Second operand 11 states. [2020-10-14 23:20:58,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:58,295 INFO L93 Difference]: Finished difference Result 186 states and 201 transitions. [2020-10-14 23:20:58,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:20:58,295 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 46 [2020-10-14 23:20:58,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:58,297 INFO L225 Difference]: With dead ends: 186 [2020-10-14 23:20:58,297 INFO L226 Difference]: Without dead ends: 174 [2020-10-14 23:20:58,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:20:58,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-14 23:20:58,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 156. [2020-10-14 23:20:58,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-14 23:20:58,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 168 transitions. [2020-10-14 23:20:58,310 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 168 transitions. Word has length 46 [2020-10-14 23:20:58,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:58,310 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 168 transitions. [2020-10-14 23:20:58,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:20:58,310 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 168 transitions. [2020-10-14 23:20:58,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 23:20:58,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:58,311 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 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] [2020-10-14 23:20:58,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 23:20:58,311 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:58,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:58,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1683572190, now seen corresponding path program 2 times [2020-10-14 23:20:58,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:58,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904363165] [2020-10-14 23:20:58,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:58,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:58,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:58,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:59,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:59,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 23:20:59,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:20:59,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1246 [2020-10-14 23:20:59,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:59,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:59,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:20:59,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:59,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 23:20:59,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:00,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:00,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:00,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:00,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:00,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:00,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:00,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:00,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:00,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:00,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:00,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:00,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:00,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:00,062 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:00,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904363165] [2020-10-14 23:21:00,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:00,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:21:00,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574941877] [2020-10-14 23:21:00,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:21:00,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:00,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:21:00,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:21:00,065 INFO L87 Difference]: Start difference. First operand 156 states and 168 transitions. Second operand 11 states. [2020-10-14 23:21:01,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:01,185 INFO L93 Difference]: Finished difference Result 214 states and 231 transitions. [2020-10-14 23:21:01,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 23:21:01,188 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2020-10-14 23:21:01,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:01,189 INFO L225 Difference]: With dead ends: 214 [2020-10-14 23:21:01,189 INFO L226 Difference]: Without dead ends: 202 [2020-10-14 23:21:01,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:21:01,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-14 23:21:01,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 151. [2020-10-14 23:21:01,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-14 23:21:01,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 162 transitions. [2020-10-14 23:21:01,202 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 162 transitions. Word has length 49 [2020-10-14 23:21:01,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:01,203 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 162 transitions. [2020-10-14 23:21:01,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:21:01,203 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 162 transitions. [2020-10-14 23:21:01,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 23:21:01,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:01,204 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:01,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 23:21:01,204 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:01,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:01,205 INFO L82 PathProgramCache]: Analyzing trace with hash 568486026, now seen corresponding path program 2 times [2020-10-14 23:21:01,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:01,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917062584] [2020-10-14 23:21:01,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:01,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:01,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:01,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:01,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 23:21:01,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:01,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 628 [2020-10-14 23:21:01,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:01,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:01,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:21:01,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:01,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 23:21:01,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:02,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:02,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:02,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:02,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:02,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:02,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:02,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:02,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:02,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:02,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:02,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:02,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:02,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:02,229 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:02,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917062584] [2020-10-14 23:21:02,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:02,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:21:02,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51496418] [2020-10-14 23:21:02,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:21:02,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:02,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:21:02,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:21:02,231 INFO L87 Difference]: Start difference. First operand 151 states and 162 transitions. Second operand 12 states. [2020-10-14 23:21:03,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:03,477 INFO L93 Difference]: Finished difference Result 182 states and 194 transitions. [2020-10-14 23:21:03,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 23:21:03,477 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 49 [2020-10-14 23:21:03,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:03,479 INFO L225 Difference]: With dead ends: 182 [2020-10-14 23:21:03,479 INFO L226 Difference]: Without dead ends: 180 [2020-10-14 23:21:03,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:21:03,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-14 23:21:03,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 151. [2020-10-14 23:21:03,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-14 23:21:03,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 162 transitions. [2020-10-14 23:21:03,489 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 162 transitions. Word has length 49 [2020-10-14 23:21:03,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:03,490 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 162 transitions. [2020-10-14 23:21:03,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:21:03,490 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 162 transitions. [2020-10-14 23:21:03,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 23:21:03,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:03,491 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 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] [2020-10-14 23:21:03,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 23:21:03,491 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:03,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:03,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1660939936, now seen corresponding path program 4 times [2020-10-14 23:21:03,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:03,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [624619244] [2020-10-14 23:21:03,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:03,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:03,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:03,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:03,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:03,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 23:21:03,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:21:03,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 334 [2020-10-14 23:21:03,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:03,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:03,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:21:03,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:03,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 23:21:03,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:04,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:04,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:04,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:04,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:04,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:04,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:04,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:04,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:04,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:04,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:04,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:04,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:04,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:04,036 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:04,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [624619244] [2020-10-14 23:21:04,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:04,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:21:04,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763257992] [2020-10-14 23:21:04,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:21:04,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:04,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:21:04,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:21:04,038 INFO L87 Difference]: Start difference. First operand 151 states and 162 transitions. Second operand 11 states. [2020-10-14 23:21:04,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:04,997 INFO L93 Difference]: Finished difference Result 170 states and 182 transitions. [2020-10-14 23:21:04,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:21:04,998 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2020-10-14 23:21:04,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:04,999 INFO L225 Difference]: With dead ends: 170 [2020-10-14 23:21:04,999 INFO L226 Difference]: Without dead ends: 142 [2020-10-14 23:21:04,999 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:21:05,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-14 23:21:05,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2020-10-14 23:21:05,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-14 23:21:05,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 152 transitions. [2020-10-14 23:21:05,008 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 152 transitions. Word has length 49 [2020-10-14 23:21:05,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:05,009 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 152 transitions. [2020-10-14 23:21:05,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:21:05,009 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 152 transitions. [2020-10-14 23:21:05,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 23:21:05,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:05,010 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:05,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 23:21:05,010 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:05,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:05,011 INFO L82 PathProgramCache]: Analyzing trace with hash 2026512150, now seen corresponding path program 2 times [2020-10-14 23:21:05,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:05,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647571528] [2020-10-14 23:21:05,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:05,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:05,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:05,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:05,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 23:21:05,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:05,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 657 [2020-10-14 23:21:05,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:05,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:05,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:21:05,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:05,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 23:21:05,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:06,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:06,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:06,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:06,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:06,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:06,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:06,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:06,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:06,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:06,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:06,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:06,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:06,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:06,241 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:06,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647571528] [2020-10-14 23:21:06,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:06,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:21:06,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907695266] [2020-10-14 23:21:06,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:21:06,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:06,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:21:06,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:21:06,243 INFO L87 Difference]: Start difference. First operand 142 states and 152 transitions. Second operand 13 states. [2020-10-14 23:21:08,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:08,207 INFO L93 Difference]: Finished difference Result 299 states and 324 transitions. [2020-10-14 23:21:08,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 23:21:08,208 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 51 [2020-10-14 23:21:08,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:08,210 INFO L225 Difference]: With dead ends: 299 [2020-10-14 23:21:08,211 INFO L226 Difference]: Without dead ends: 297 [2020-10-14 23:21:08,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:21:08,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-10-14 23:21:08,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 217. [2020-10-14 23:21:08,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-10-14 23:21:08,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 233 transitions. [2020-10-14 23:21:08,225 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 233 transitions. Word has length 51 [2020-10-14 23:21:08,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:08,225 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 233 transitions. [2020-10-14 23:21:08,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:21:08,226 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 233 transitions. [2020-10-14 23:21:08,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 23:21:08,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:08,227 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:08,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 23:21:08,227 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:08,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:08,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1751752536, now seen corresponding path program 1 times [2020-10-14 23:21:08,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:08,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1919980478] [2020-10-14 23:21:08,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:08,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:08,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:08,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:08,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 23:21:08,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:08,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 498 [2020-10-14 23:21:08,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:08,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:08,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:21:08,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:08,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 23:21:08,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:09,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:09,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:09,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:09,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:09,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:09,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:09,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:09,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:09,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:09,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:09,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:09,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:09,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:09,308 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:09,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1919980478] [2020-10-14 23:21:09,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:09,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:21:09,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813467757] [2020-10-14 23:21:09,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:21:09,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:09,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:21:09,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:21:09,309 INFO L87 Difference]: Start difference. First operand 217 states and 233 transitions. Second operand 13 states. [2020-10-14 23:21:10,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:10,786 INFO L93 Difference]: Finished difference Result 265 states and 285 transitions. [2020-10-14 23:21:10,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 23:21:10,786 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 51 [2020-10-14 23:21:10,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:10,788 INFO L225 Difference]: With dead ends: 265 [2020-10-14 23:21:10,788 INFO L226 Difference]: Without dead ends: 253 [2020-10-14 23:21:10,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:21:10,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-10-14 23:21:10,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 230. [2020-10-14 23:21:10,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-14 23:21:10,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 247 transitions. [2020-10-14 23:21:10,802 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 247 transitions. Word has length 51 [2020-10-14 23:21:10,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:10,803 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 247 transitions. [2020-10-14 23:21:10,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:21:10,803 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 247 transitions. [2020-10-14 23:21:10,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 23:21:10,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:10,804 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:10,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 23:21:10,804 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:10,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:10,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1412688341, now seen corresponding path program 3 times [2020-10-14 23:21:10,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:10,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104463966] [2020-10-14 23:21:10,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:10,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:10,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:11,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:12,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:12,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 23:21:12,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:21:12,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1399 [2020-10-14 23:21:12,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:12,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:12,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:21:12,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:12,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 23:21:12,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:12,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:12,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:12,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:12,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:12,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:12,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:12,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:12,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:12,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:12,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:12,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:12,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:12,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:12,677 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:12,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104463966] [2020-10-14 23:21:12,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:12,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:21:12,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222122896] [2020-10-14 23:21:12,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:21:12,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:12,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:21:12,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:21:12,679 INFO L87 Difference]: Start difference. First operand 230 states and 247 transitions. Second operand 13 states. [2020-10-14 23:21:14,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:14,072 INFO L93 Difference]: Finished difference Result 265 states and 284 transitions. [2020-10-14 23:21:14,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:21:14,073 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 54 [2020-10-14 23:21:14,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:14,075 INFO L225 Difference]: With dead ends: 265 [2020-10-14 23:21:14,075 INFO L226 Difference]: Without dead ends: 253 [2020-10-14 23:21:14,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:21:14,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-10-14 23:21:14,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 227. [2020-10-14 23:21:14,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-10-14 23:21:14,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 243 transitions. [2020-10-14 23:21:14,088 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 243 transitions. Word has length 54 [2020-10-14 23:21:14,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:14,088 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 243 transitions. [2020-10-14 23:21:14,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:21:14,089 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 243 transitions. [2020-10-14 23:21:14,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 23:21:14,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:14,090 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:14,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 23:21:14,090 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:14,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:14,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1767192791, now seen corresponding path program 1 times [2020-10-14 23:21:14,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:14,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217410304] [2020-10-14 23:21:14,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:14,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:14,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:15,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:15,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 23:21:15,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:15,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 990 [2020-10-14 23:21:15,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:15,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:15,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:21:15,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:15,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 23:21:15,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:15,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:15,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:15,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:15,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:15,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:15,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:15,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:21:15,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:15,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:15,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:15,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:15,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:15,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:15,614 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:15,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217410304] [2020-10-14 23:21:15,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:15,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:21:15,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304985246] [2020-10-14 23:21:15,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:21:15,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:15,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:21:15,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:21:15,616 INFO L87 Difference]: Start difference. First operand 227 states and 243 transitions. Second operand 14 states. [2020-10-14 23:21:17,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:17,530 INFO L93 Difference]: Finished difference Result 271 states and 290 transitions. [2020-10-14 23:21:17,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 23:21:17,531 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-10-14 23:21:17,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:17,533 INFO L225 Difference]: With dead ends: 271 [2020-10-14 23:21:17,533 INFO L226 Difference]: Without dead ends: 269 [2020-10-14 23:21:17,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2020-10-14 23:21:17,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-10-14 23:21:17,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 227. [2020-10-14 23:21:17,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-10-14 23:21:17,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 243 transitions. [2020-10-14 23:21:17,547 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 243 transitions. Word has length 54 [2020-10-14 23:21:17,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:17,547 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 243 transitions. [2020-10-14 23:21:17,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:21:17,548 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 243 transitions. [2020-10-14 23:21:17,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 23:21:17,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:17,549 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:17,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 23:21:17,549 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:17,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:17,549 INFO L82 PathProgramCache]: Analyzing trace with hash -568682839, now seen corresponding path program 2 times [2020-10-14 23:21:17,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:17,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107544495] [2020-10-14 23:21:17,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:17,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:17,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:18,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:18,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:18,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 23:21:18,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:21:18,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1311 [2020-10-14 23:21:18,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:18,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:18,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:21:18,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:18,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 23:21:18,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:19,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:19,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:19,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:19,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:19,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:19,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:19,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:19,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:19,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:19,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:19,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:19,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:19,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:19,190 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:19,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107544495] [2020-10-14 23:21:19,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:19,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:21:19,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878418752] [2020-10-14 23:21:19,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:21:19,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:19,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:21:19,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:21:19,192 INFO L87 Difference]: Start difference. First operand 227 states and 243 transitions. Second operand 13 states. [2020-10-14 23:21:20,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:20,640 INFO L93 Difference]: Finished difference Result 252 states and 269 transitions. [2020-10-14 23:21:20,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:21:20,640 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 54 [2020-10-14 23:21:20,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:20,642 INFO L225 Difference]: With dead ends: 252 [2020-10-14 23:21:20,642 INFO L226 Difference]: Without dead ends: 186 [2020-10-14 23:21:20,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:21:20,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-14 23:21:20,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 176. [2020-10-14 23:21:20,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-14 23:21:20,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 188 transitions. [2020-10-14 23:21:20,658 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 188 transitions. Word has length 54 [2020-10-14 23:21:20,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:20,658 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 188 transitions. [2020-10-14 23:21:20,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:21:20,658 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 188 transitions. [2020-10-14 23:21:20,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 23:21:20,659 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:20,659 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:20,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 23:21:20,659 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:20,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:20,660 INFO L82 PathProgramCache]: Analyzing trace with hash 800949157, now seen corresponding path program 3 times [2020-10-14 23:21:20,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:20,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204590202] [2020-10-14 23:21:20,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:20,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:20,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:22,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:22,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 23:21:22,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:22,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1800 [2020-10-14 23:21:22,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:22,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:22,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:21:22,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:22,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 23:21:22,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:23,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:23,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:23,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:23,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:23,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:23,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:23,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:23,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:23,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:23,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:23,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:23,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:23,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:23,137 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:23,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [204590202] [2020-10-14 23:21:23,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:23,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:21:23,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343063548] [2020-10-14 23:21:23,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:21:23,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:23,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:21:23,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:21:23,139 INFO L87 Difference]: Start difference. First operand 176 states and 188 transitions. Second operand 13 states. [2020-10-14 23:21:24,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:24,200 INFO L93 Difference]: Finished difference Result 202 states and 215 transitions. [2020-10-14 23:21:24,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:21:24,201 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 57 [2020-10-14 23:21:24,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:24,202 INFO L225 Difference]: With dead ends: 202 [2020-10-14 23:21:24,202 INFO L226 Difference]: Without dead ends: 200 [2020-10-14 23:21:24,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:21:24,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-14 23:21:24,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 172. [2020-10-14 23:21:24,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-14 23:21:24,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 184 transitions. [2020-10-14 23:21:24,216 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 184 transitions. Word has length 57 [2020-10-14 23:21:24,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:24,216 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 184 transitions. [2020-10-14 23:21:24,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:21:24,217 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 184 transitions. [2020-10-14 23:21:24,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 23:21:24,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:24,217 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:24,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 23:21:24,218 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:24,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:24,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1931554039, now seen corresponding path program 3 times [2020-10-14 23:21:24,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:24,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263122392] [2020-10-14 23:21:24,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:24,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:24,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:25,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:25,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 23:21:25,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:25,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1170 [2020-10-14 23:21:25,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:25,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:25,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:21:25,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:25,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 23:21:25,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:25,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:25,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:25,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:25,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:25,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:25,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:25,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:25,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:25,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:25,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:25,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:25,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:25,761 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:25,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263122392] [2020-10-14 23:21:25,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:25,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:21:25,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788863297] [2020-10-14 23:21:25,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:21:25,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:25,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:21:25,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:21:25,763 INFO L87 Difference]: Start difference. First operand 172 states and 184 transitions. Second operand 12 states. [2020-10-14 23:21:26,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:26,938 INFO L93 Difference]: Finished difference Result 196 states and 210 transitions. [2020-10-14 23:21:26,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:21:26,938 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-10-14 23:21:26,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:26,940 INFO L225 Difference]: With dead ends: 196 [2020-10-14 23:21:26,940 INFO L226 Difference]: Without dead ends: 194 [2020-10-14 23:21:26,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:21:26,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-14 23:21:26,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 176. [2020-10-14 23:21:26,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-14 23:21:26,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 189 transitions. [2020-10-14 23:21:26,951 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 189 transitions. Word has length 57 [2020-10-14 23:21:26,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:26,952 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 189 transitions. [2020-10-14 23:21:26,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:21:26,952 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 189 transitions. [2020-10-14 23:21:26,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 23:21:26,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:26,953 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:26,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 23:21:26,953 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:26,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:26,954 INFO L82 PathProgramCache]: Analyzing trace with hash 180183212, now seen corresponding path program 4 times [2020-10-14 23:21:26,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:26,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1110606695] [2020-10-14 23:21:26,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:26,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:27,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:27,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:28,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:28,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 23:21:28,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:21:28,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1740 [2020-10-14 23:21:28,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:28,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:28,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:21:28,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:28,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 23:21:28,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:29,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:29,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:29,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:29,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:29,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:29,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:29,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:29,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:29,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:29,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:29,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:29,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:29,104 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 5 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:29,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1110606695] [2020-10-14 23:21:29,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:29,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:21:29,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179483435] [2020-10-14 23:21:29,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:21:29,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:29,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:21:29,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:21:29,106 INFO L87 Difference]: Start difference. First operand 176 states and 189 transitions. Second operand 14 states. [2020-10-14 23:21:31,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:31,125 INFO L93 Difference]: Finished difference Result 213 states and 230 transitions. [2020-10-14 23:21:31,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:21:31,125 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 59 [2020-10-14 23:21:31,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:31,127 INFO L225 Difference]: With dead ends: 213 [2020-10-14 23:21:31,127 INFO L226 Difference]: Without dead ends: 175 [2020-10-14 23:21:31,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:21:31,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-14 23:21:31,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 159. [2020-10-14 23:21:31,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-14 23:21:31,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 171 transitions. [2020-10-14 23:21:31,140 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 171 transitions. Word has length 59 [2020-10-14 23:21:31,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:31,140 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 171 transitions. [2020-10-14 23:21:31,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:21:31,140 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 171 transitions. [2020-10-14 23:21:31,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 23:21:31,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:31,141 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:31,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 23:21:31,142 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:31,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:31,142 INFO L82 PathProgramCache]: Analyzing trace with hash 73674922, now seen corresponding path program 4 times [2020-10-14 23:21:31,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:31,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2040077433] [2020-10-14 23:21:31,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:31,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:31,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:31,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:32,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:34,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:34,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 23:21:34,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:21:34,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2836 [2020-10-14 23:21:34,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:34,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:34,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:21:34,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:34,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 23:21:34,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:34,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:34,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:34,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:34,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:34,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:34,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:34,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:34,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:34,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:34,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:34,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:34,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:34,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:34,412 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:34,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2040077433] [2020-10-14 23:21:34,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:34,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:21:34,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493750562] [2020-10-14 23:21:34,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:21:34,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:34,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:21:34,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:21:34,414 INFO L87 Difference]: Start difference. First operand 159 states and 171 transitions. Second operand 13 states. [2020-10-14 23:21:35,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:35,713 INFO L93 Difference]: Finished difference Result 219 states and 236 transitions. [2020-10-14 23:21:35,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 23:21:35,713 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-10-14 23:21:35,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:35,715 INFO L225 Difference]: With dead ends: 219 [2020-10-14 23:21:35,715 INFO L226 Difference]: Without dead ends: 207 [2020-10-14 23:21:35,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:21:35,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-14 23:21:35,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 194. [2020-10-14 23:21:35,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-14 23:21:35,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 208 transitions. [2020-10-14 23:21:35,734 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 208 transitions. Word has length 60 [2020-10-14 23:21:35,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:35,734 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 208 transitions. [2020-10-14 23:21:35,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:21:35,734 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 208 transitions. [2020-10-14 23:21:35,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 23:21:35,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:35,735 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:35,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 23:21:35,736 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:35,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:35,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1041411242, now seen corresponding path program 3 times [2020-10-14 23:21:35,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:35,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949170370] [2020-10-14 23:21:35,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:35,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:35,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:37,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:37,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 23:21:37,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:37,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1232 [2020-10-14 23:21:37,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:37,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:37,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:21:37,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:37,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 23:21:37,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:37,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:37,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:37,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:37,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:37,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:37,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:37,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:37,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:37,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:37,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:37,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:37,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:37,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:37,546 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:37,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [949170370] [2020-10-14 23:21:37,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:37,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:21:37,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967819070] [2020-10-14 23:21:37,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:21:37,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:37,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:21:37,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:21:37,548 INFO L87 Difference]: Start difference. First operand 194 states and 208 transitions. Second operand 14 states. [2020-10-14 23:21:39,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:39,319 INFO L93 Difference]: Finished difference Result 251 states and 270 transitions. [2020-10-14 23:21:39,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:21:39,320 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 60 [2020-10-14 23:21:39,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:39,322 INFO L225 Difference]: With dead ends: 251 [2020-10-14 23:21:39,322 INFO L226 Difference]: Without dead ends: 249 [2020-10-14 23:21:39,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:21:39,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-10-14 23:21:39,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 214. [2020-10-14 23:21:39,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-14 23:21:39,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 230 transitions. [2020-10-14 23:21:39,336 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 230 transitions. Word has length 60 [2020-10-14 23:21:39,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:39,337 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 230 transitions. [2020-10-14 23:21:39,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:21:39,337 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 230 transitions. [2020-10-14 23:21:39,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 23:21:39,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:39,338 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:39,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 23:21:39,338 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:39,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:39,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1465057964, now seen corresponding path program 4 times [2020-10-14 23:21:39,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:39,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000491502] [2020-10-14 23:21:39,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:39,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:39,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:40,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:40,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 23:21:40,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:40,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 689 [2020-10-14 23:21:40,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:40,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:40,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:21:40,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:40,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 23:21:40,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:40,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:40,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:40,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:40,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:40,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:40,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:40,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:40,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:40,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:40,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:40,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:40,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:40,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:40,769 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:40,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000491502] [2020-10-14 23:21:40,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:40,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:21:40,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681781207] [2020-10-14 23:21:40,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:21:40,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:40,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:21:40,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:21:40,773 INFO L87 Difference]: Start difference. First operand 214 states and 230 transitions. Second operand 13 states. [2020-10-14 23:21:41,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:41,905 INFO L93 Difference]: Finished difference Result 230 states and 246 transitions. [2020-10-14 23:21:41,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:21:41,906 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 60 [2020-10-14 23:21:41,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:41,907 INFO L225 Difference]: With dead ends: 230 [2020-10-14 23:21:41,907 INFO L226 Difference]: Without dead ends: 203 [2020-10-14 23:21:41,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:21:41,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-14 23:21:41,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 181. [2020-10-14 23:21:41,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-14 23:21:41,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 195 transitions. [2020-10-14 23:21:41,919 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 195 transitions. Word has length 60 [2020-10-14 23:21:41,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:41,919 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 195 transitions. [2020-10-14 23:21:41,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:21:41,919 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 195 transitions. [2020-10-14 23:21:41,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 23:21:41,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:41,920 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:41,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 23:21:41,920 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:41,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:41,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1418090850, now seen corresponding path program 5 times [2020-10-14 23:21:41,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:41,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502295902] [2020-10-14 23:21:41,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:41,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:42,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:43,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:43,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 23:21:43,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:43,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1297 [2020-10-14 23:21:43,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:43,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:43,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:21:43,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:43,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 23:21:43,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:43,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:43,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:43,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:43,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:43,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:43,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:43,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:43,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:43,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:43,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:43,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:43,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:43,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:43,799 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:43,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502295902] [2020-10-14 23:21:43,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:43,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:21:43,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908682096] [2020-10-14 23:21:43,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:21:43,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:43,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:21:43,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:21:43,801 INFO L87 Difference]: Start difference. First operand 181 states and 195 transitions. Second operand 15 states. [2020-10-14 23:21:45,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:45,966 INFO L93 Difference]: Finished difference Result 268 states and 289 transitions. [2020-10-14 23:21:45,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:21:45,967 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 62 [2020-10-14 23:21:45,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:45,969 INFO L225 Difference]: With dead ends: 268 [2020-10-14 23:21:45,970 INFO L226 Difference]: Without dead ends: 266 [2020-10-14 23:21:45,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2020-10-14 23:21:45,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-14 23:21:45,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 194. [2020-10-14 23:21:45,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-14 23:21:45,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 209 transitions. [2020-10-14 23:21:45,983 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 209 transitions. Word has length 62 [2020-10-14 23:21:45,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:45,983 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 209 transitions. [2020-10-14 23:21:45,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:21:45,984 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 209 transitions. [2020-10-14 23:21:45,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 23:21:45,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:45,985 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:45,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 23:21:45,985 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:45,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:45,985 INFO L82 PathProgramCache]: Analyzing trace with hash 72941987, now seen corresponding path program 6 times [2020-10-14 23:21:45,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:45,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007415397] [2020-10-14 23:21:45,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:46,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:47,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:48,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:48,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:48,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 23:21:48,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:21:48,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2771 [2020-10-14 23:21:48,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:48,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:48,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:21:48,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:48,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 23:21:48,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:49,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:49,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:49,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:49,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:49,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:49,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:49,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:21:49,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:49,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:49,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:49,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:49,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:49,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:49,444 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 9 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:49,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007415397] [2020-10-14 23:21:49,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:49,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:21:49,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254091024] [2020-10-14 23:21:49,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:21:49,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:49,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:21:49,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:21:49,446 INFO L87 Difference]: Start difference. First operand 194 states and 209 transitions. Second operand 15 states. [2020-10-14 23:21:51,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:51,677 INFO L93 Difference]: Finished difference Result 326 states and 353 transitions. [2020-10-14 23:21:51,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:21:51,678 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 65 [2020-10-14 23:21:51,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:51,680 INFO L225 Difference]: With dead ends: 326 [2020-10-14 23:21:51,681 INFO L226 Difference]: Without dead ends: 314 [2020-10-14 23:21:51,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2020-10-14 23:21:51,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-10-14 23:21:51,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 266. [2020-10-14 23:21:51,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-14 23:21:51,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 286 transitions. [2020-10-14 23:21:51,698 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 286 transitions. Word has length 65 [2020-10-14 23:21:51,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:51,698 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 286 transitions. [2020-10-14 23:21:51,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:21:51,699 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 286 transitions. [2020-10-14 23:21:51,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 23:21:51,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:51,700 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:51,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 23:21:51,700 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:51,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:51,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1042144177, now seen corresponding path program 2 times [2020-10-14 23:21:51,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:51,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2009596542] [2020-10-14 23:21:51,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:51,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:52,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:54,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:54,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 23:21:54,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:54,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2230 [2020-10-14 23:21:54,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:54,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:54,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:21:54,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:54,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 23:21:54,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:21:54,676 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2020-10-14 23:21:54,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:54,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:54,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:54,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:54,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:54,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:54,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:54,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:55,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:55,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:55,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:55,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:55,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:55,067 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:55,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2009596542] [2020-10-14 23:21:55,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:55,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:21:55,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619338464] [2020-10-14 23:21:55,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:21:55,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:55,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:21:55,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:21:55,071 INFO L87 Difference]: Start difference. First operand 266 states and 286 transitions. Second operand 16 states. [2020-10-14 23:21:57,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:21:57,586 INFO L93 Difference]: Finished difference Result 375 states and 406 transitions. [2020-10-14 23:21:57,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:21:57,587 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 65 [2020-10-14 23:21:57,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:21:57,590 INFO L225 Difference]: With dead ends: 375 [2020-10-14 23:21:57,591 INFO L226 Difference]: Without dead ends: 373 [2020-10-14 23:21:57,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:21:57,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2020-10-14 23:21:57,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 318. [2020-10-14 23:21:57,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2020-10-14 23:21:57,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 343 transitions. [2020-10-14 23:21:57,611 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 343 transitions. Word has length 65 [2020-10-14 23:21:57,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:21:57,611 INFO L479 AbstractCegarLoop]: Abstraction has 318 states and 343 transitions. [2020-10-14 23:21:57,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:21:57,612 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 343 transitions. [2020-10-14 23:21:57,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 23:21:57,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:21:57,613 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:21:57,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 23:21:57,613 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:21:57,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:21:57,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1855330715, now seen corresponding path program 3 times [2020-10-14 23:21:57,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:21:57,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1889637202] [2020-10-14 23:21:57,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:21:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:57,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:58,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:58,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 23:21:58,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:58,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1202 [2020-10-14 23:21:58,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:58,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:58,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:21:58,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:21:58,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 23:21:58,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:59,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:21:59,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:21:59,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:21:59,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:21:59,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:21:59,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:21:59,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:21:59,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:21:59,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:21:59,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:21:59,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:21:59,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:21:59,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:21:59,489 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:21:59,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1889637202] [2020-10-14 23:21:59,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:21:59,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:21:59,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851097607] [2020-10-14 23:21:59,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:21:59,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:21:59,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:21:59,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:21:59,491 INFO L87 Difference]: Start difference. First operand 318 states and 343 transitions. Second operand 15 states. [2020-10-14 23:22:02,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:02,239 INFO L93 Difference]: Finished difference Result 579 states and 627 transitions. [2020-10-14 23:22:02,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:22:02,240 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 65 [2020-10-14 23:22:02,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:02,244 INFO L225 Difference]: With dead ends: 579 [2020-10-14 23:22:02,244 INFO L226 Difference]: Without dead ends: 577 [2020-10-14 23:22:02,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2020-10-14 23:22:02,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2020-10-14 23:22:02,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 393. [2020-10-14 23:22:02,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2020-10-14 23:22:02,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 425 transitions. [2020-10-14 23:22:02,268 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 425 transitions. Word has length 65 [2020-10-14 23:22:02,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:02,269 INFO L479 AbstractCegarLoop]: Abstraction has 393 states and 425 transitions. [2020-10-14 23:22:02,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:22:02,269 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 425 transitions. [2020-10-14 23:22:02,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 23:22:02,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:02,270 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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] [2020-10-14 23:22:02,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 23:22:02,271 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:02,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:02,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1324550417, now seen corresponding path program 1 times [2020-10-14 23:22:02,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:02,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1057420524] [2020-10-14 23:22:02,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:02,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:02,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:03,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:03,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 23:22:03,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:03,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1208 [2020-10-14 23:22:03,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:03,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:03,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:22:03,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:03,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 23:22:03,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:04,066 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 56 [2020-10-14 23:22:04,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:04,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:04,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:04,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:04,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:04,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:04,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:04,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:04,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:04,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:04,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:04,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:04,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:04,296 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 4 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:04,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1057420524] [2020-10-14 23:22:04,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:04,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:22:04,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599398104] [2020-10-14 23:22:04,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:22:04,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:04,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:22:04,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:22:04,297 INFO L87 Difference]: Start difference. First operand 393 states and 425 transitions. Second operand 15 states. [2020-10-14 23:22:06,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:06,216 INFO L93 Difference]: Finished difference Result 506 states and 549 transitions. [2020-10-14 23:22:06,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:22:06,217 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 65 [2020-10-14 23:22:06,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:06,220 INFO L225 Difference]: With dead ends: 506 [2020-10-14 23:22:06,220 INFO L226 Difference]: Without dead ends: 493 [2020-10-14 23:22:06,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:22:06,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2020-10-14 23:22:06,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 449. [2020-10-14 23:22:06,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2020-10-14 23:22:06,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 484 transitions. [2020-10-14 23:22:06,244 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 484 transitions. Word has length 65 [2020-10-14 23:22:06,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:06,244 INFO L479 AbstractCegarLoop]: Abstraction has 449 states and 484 transitions. [2020-10-14 23:22:06,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:22:06,244 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 484 transitions. [2020-10-14 23:22:06,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 23:22:06,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:06,245 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:06,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 23:22:06,245 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:06,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:06,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1011325213, now seen corresponding path program 4 times [2020-10-14 23:22:06,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:06,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669601906] [2020-10-14 23:22:06,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:06,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:06,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:07,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:07,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 23:22:07,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:07,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 900 [2020-10-14 23:22:07,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:07,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:07,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:22:07,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:07,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 23:22:07,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:07,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:07,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:07,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:07,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:07,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:07,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:07,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:22:07,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:07,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:07,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:07,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:07,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:07,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:07,706 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 1 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:07,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669601906] [2020-10-14 23:22:07,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:07,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:22:07,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640777405] [2020-10-14 23:22:07,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:22:07,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:07,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:22:07,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:22:07,707 INFO L87 Difference]: Start difference. First operand 449 states and 484 transitions. Second operand 15 states. [2020-10-14 23:22:09,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:09,639 INFO L93 Difference]: Finished difference Result 491 states and 529 transitions. [2020-10-14 23:22:09,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:22:09,640 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 65 [2020-10-14 23:22:09,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:09,643 INFO L225 Difference]: With dead ends: 491 [2020-10-14 23:22:09,643 INFO L226 Difference]: Without dead ends: 479 [2020-10-14 23:22:09,644 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=76, Invalid=574, Unknown=0, NotChecked=0, Total=650 [2020-10-14 23:22:09,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2020-10-14 23:22:09,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 464. [2020-10-14 23:22:09,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2020-10-14 23:22:09,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 500 transitions. [2020-10-14 23:22:09,668 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 500 transitions. Word has length 65 [2020-10-14 23:22:09,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:09,669 INFO L479 AbstractCegarLoop]: Abstraction has 464 states and 500 transitions. [2020-10-14 23:22:09,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:22:09,669 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 500 transitions. [2020-10-14 23:22:09,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 23:22:09,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:09,670 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:09,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 23:22:09,671 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:09,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:09,671 INFO L82 PathProgramCache]: Analyzing trace with hash 895932540, now seen corresponding path program 5 times [2020-10-14 23:22:09,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:09,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028084074] [2020-10-14 23:22:09,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:09,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:09,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:10,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:13,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:13,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 23:22:13,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:22:13,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3485 [2020-10-14 23:22:13,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:13,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:13,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:22:13,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:13,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 23:22:13,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:13,747 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 43 [2020-10-14 23:22:13,884 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 55 [2020-10-14 23:22:14,100 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 66 [2020-10-14 23:22:14,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:14,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:14,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:14,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:14,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:14,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:14,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:14,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:14,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:14,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:14,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:14,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:14,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:14,406 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 12 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:14,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028084074] [2020-10-14 23:22:14,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:14,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:22:14,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376425877] [2020-10-14 23:22:14,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:22:14,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:14,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:22:14,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:22:14,408 INFO L87 Difference]: Start difference. First operand 464 states and 500 transitions. Second operand 15 states. [2020-10-14 23:22:16,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:16,496 INFO L93 Difference]: Finished difference Result 504 states and 542 transitions. [2020-10-14 23:22:16,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:22:16,497 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 68 [2020-10-14 23:22:16,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:16,500 INFO L225 Difference]: With dead ends: 504 [2020-10-14 23:22:16,500 INFO L226 Difference]: Without dead ends: 492 [2020-10-14 23:22:16,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:22:16,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-10-14 23:22:16,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 461. [2020-10-14 23:22:16,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2020-10-14 23:22:16,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 497 transitions. [2020-10-14 23:22:16,525 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 497 transitions. Word has length 68 [2020-10-14 23:22:16,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:16,525 INFO L479 AbstractCegarLoop]: Abstraction has 461 states and 497 transitions. [2020-10-14 23:22:16,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:22:16,525 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 497 transitions. [2020-10-14 23:22:16,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 23:22:16,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:16,527 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 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] [2020-10-14 23:22:16,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 23:22:16,527 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:16,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:16,528 INFO L82 PathProgramCache]: Analyzing trace with hash -219153624, now seen corresponding path program 2 times [2020-10-14 23:22:16,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:16,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126889770] [2020-10-14 23:22:16,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:16,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:18,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:18,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 23:22:18,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:18,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1575 [2020-10-14 23:22:18,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:18,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:18,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:22:18,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:18,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 23:22:18,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:18,608 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 50 [2020-10-14 23:22:18,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:18,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:18,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:18,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:18,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:18,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:18,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:18,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:18,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:18,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:18,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:18,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:18,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:19,023 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:19,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2126889770] [2020-10-14 23:22:19,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:19,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:22:19,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556858749] [2020-10-14 23:22:19,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:22:19,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:19,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:22:19,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:22:19,025 INFO L87 Difference]: Start difference. First operand 461 states and 497 transitions. Second operand 16 states. [2020-10-14 23:22:21,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:21,865 INFO L93 Difference]: Finished difference Result 502 states and 537 transitions. [2020-10-14 23:22:21,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 23:22:21,866 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 68 [2020-10-14 23:22:21,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:21,868 INFO L225 Difference]: With dead ends: 502 [2020-10-14 23:22:21,868 INFO L226 Difference]: Without dead ends: 500 [2020-10-14 23:22:21,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2020-10-14 23:22:21,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-10-14 23:22:21,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 464. [2020-10-14 23:22:21,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2020-10-14 23:22:21,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 500 transitions. [2020-10-14 23:22:21,897 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 500 transitions. Word has length 68 [2020-10-14 23:22:21,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:21,897 INFO L479 AbstractCegarLoop]: Abstraction has 464 states and 500 transitions. [2020-10-14 23:22:21,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:22:21,898 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 500 transitions. [2020-10-14 23:22:21,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 23:22:21,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:21,899 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:21,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 23:22:21,899 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:21,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:21,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1925291838, now seen corresponding path program 6 times [2020-10-14 23:22:21,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:21,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [531167004] [2020-10-14 23:22:21,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:21,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:21,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:22,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:23,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:23,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 23:22:23,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:22:23,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1520 [2020-10-14 23:22:23,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:23,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:23,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:22:23,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:23,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 23:22:23,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:24,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:24,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:24,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:24,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:24,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:24,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:24,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:24,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:24,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:24,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:24,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:24,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:24,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:24,248 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 5 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:24,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [531167004] [2020-10-14 23:22:24,248 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:24,248 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:22:24,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149406984] [2020-10-14 23:22:24,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:22:24,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:24,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:22:24,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:22:24,249 INFO L87 Difference]: Start difference. First operand 464 states and 500 transitions. Second operand 15 states. [2020-10-14 23:22:26,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:26,314 INFO L93 Difference]: Finished difference Result 480 states and 516 transitions. [2020-10-14 23:22:26,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:22:26,315 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 68 [2020-10-14 23:22:26,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:26,317 INFO L225 Difference]: With dead ends: 480 [2020-10-14 23:22:26,318 INFO L226 Difference]: Without dead ends: 425 [2020-10-14 23:22:26,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=70, Invalid=530, Unknown=0, NotChecked=0, Total=600 [2020-10-14 23:22:26,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2020-10-14 23:22:26,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 423. [2020-10-14 23:22:26,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2020-10-14 23:22:26,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 455 transitions. [2020-10-14 23:22:26,338 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 455 transitions. Word has length 68 [2020-10-14 23:22:26,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:26,338 INFO L479 AbstractCegarLoop]: Abstraction has 423 states and 455 transitions. [2020-10-14 23:22:26,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:22:26,338 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 455 transitions. [2020-10-14 23:22:26,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 23:22:26,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:26,339 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:26,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-14 23:22:26,339 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:26,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:26,340 INFO L82 PathProgramCache]: Analyzing trace with hash -112140236, now seen corresponding path program 7 times [2020-10-14 23:22:26,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:26,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1017748109] [2020-10-14 23:22:26,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:26,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:26,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:28,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:28,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 23:22:28,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:28,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2229 [2020-10-14 23:22:28,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:28,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:28,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:22:28,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:28,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 23:22:28,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:29,063 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2020-10-14 23:22:29,201 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2020-10-14 23:22:29,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:29,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:29,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:29,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:29,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:29,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:29,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:29,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:29,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:29,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:29,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:29,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:29,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:29,481 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:29,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1017748109] [2020-10-14 23:22:29,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:29,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:22:29,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429606470] [2020-10-14 23:22:29,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:22:29,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:29,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:22:29,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:22:29,483 INFO L87 Difference]: Start difference. First operand 423 states and 455 transitions. Second operand 17 states. [2020-10-14 23:22:33,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:33,447 INFO L93 Difference]: Finished difference Result 796 states and 861 transitions. [2020-10-14 23:22:33,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 23:22:33,448 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 70 [2020-10-14 23:22:33,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:33,452 INFO L225 Difference]: With dead ends: 796 [2020-10-14 23:22:33,452 INFO L226 Difference]: Without dead ends: 794 [2020-10-14 23:22:33,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=88, Invalid=842, Unknown=0, NotChecked=0, Total=930 [2020-10-14 23:22:33,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2020-10-14 23:22:33,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 639. [2020-10-14 23:22:33,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2020-10-14 23:22:33,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 689 transitions. [2020-10-14 23:22:33,490 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 689 transitions. Word has length 70 [2020-10-14 23:22:33,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:33,490 INFO L479 AbstractCegarLoop]: Abstraction has 639 states and 689 transitions. [2020-10-14 23:22:33,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:22:33,491 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 689 transitions. [2020-10-14 23:22:33,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 23:22:33,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:33,493 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 23:22:33,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-14 23:22:33,493 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:33,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:33,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1259667062, now seen corresponding path program 7 times [2020-10-14 23:22:33,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:33,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490570394] [2020-10-14 23:22:33,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:33,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:33,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:35,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:35,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 23:22:35,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:35,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1722 [2020-10-14 23:22:35,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:35,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:35,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:22:35,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:35,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 23:22:35,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:36,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:36,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:36,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:36,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:36,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:36,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:36,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:22:36,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:36,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:36,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:36,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:36,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:36,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:36,120 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 2 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:36,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [490570394] [2020-10-14 23:22:36,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:36,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:22:36,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388132690] [2020-10-14 23:22:36,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:22:36,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:36,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:22:36,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:22:36,121 INFO L87 Difference]: Start difference. First operand 639 states and 689 transitions. Second operand 17 states. [2020-10-14 23:22:39,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:39,366 INFO L93 Difference]: Finished difference Result 713 states and 767 transitions. [2020-10-14 23:22:39,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 23:22:39,366 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 70 [2020-10-14 23:22:39,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:39,370 INFO L225 Difference]: With dead ends: 713 [2020-10-14 23:22:39,370 INFO L226 Difference]: Without dead ends: 701 [2020-10-14 23:22:39,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=88, Invalid=782, Unknown=0, NotChecked=0, Total=870 [2020-10-14 23:22:39,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2020-10-14 23:22:39,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 675. [2020-10-14 23:22:39,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 675 states. [2020-10-14 23:22:39,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 729 transitions. [2020-10-14 23:22:39,410 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 729 transitions. Word has length 70 [2020-10-14 23:22:39,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:39,410 INFO L479 AbstractCegarLoop]: Abstraction has 675 states and 729 transitions. [2020-10-14 23:22:39,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:22:39,411 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 729 transitions. [2020-10-14 23:22:39,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 23:22:39,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:39,412 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:39,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-14 23:22:39,413 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:39,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:39,413 INFO L82 PathProgramCache]: Analyzing trace with hash 442233098, now seen corresponding path program 5 times [2020-10-14 23:22:39,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:39,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793169428] [2020-10-14 23:22:39,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:39,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:39,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:41,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:41,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 23:22:41,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:41,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2006 [2020-10-14 23:22:41,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:41,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:41,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:22:41,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:41,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 23:22:41,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:41,844 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2020-10-14 23:22:42,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:42,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:42,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:42,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:42,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:42,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:42,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:42,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:42,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:42,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:42,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:42,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:42,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:42,301 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:42,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793169428] [2020-10-14 23:22:42,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:42,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:22:42,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492247824] [2020-10-14 23:22:42,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:22:42,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:42,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:22:42,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:22:42,303 INFO L87 Difference]: Start difference. First operand 675 states and 729 transitions. Second operand 16 states. [2020-10-14 23:22:44,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:44,316 INFO L93 Difference]: Finished difference Result 729 states and 789 transitions. [2020-10-14 23:22:44,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:22:44,317 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 71 [2020-10-14 23:22:44,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:44,321 INFO L225 Difference]: With dead ends: 729 [2020-10-14 23:22:44,321 INFO L226 Difference]: Without dead ends: 727 [2020-10-14 23:22:44,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=89, Invalid=561, Unknown=0, NotChecked=0, Total=650 [2020-10-14 23:22:44,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2020-10-14 23:22:44,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 680. [2020-10-14 23:22:44,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 680 states. [2020-10-14 23:22:44,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 734 transitions. [2020-10-14 23:22:44,361 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 734 transitions. Word has length 71 [2020-10-14 23:22:44,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:44,361 INFO L479 AbstractCegarLoop]: Abstraction has 680 states and 734 transitions. [2020-10-14 23:22:44,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:22:44,361 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 734 transitions. [2020-10-14 23:22:44,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 23:22:44,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:44,363 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:44,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-14 23:22:44,363 INFO L427 AbstractCegarLoop]: === Iteration 48 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:44,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:44,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1096106932, now seen corresponding path program 6 times [2020-10-14 23:22:44,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:44,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [897482350] [2020-10-14 23:22:44,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:44,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:44,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:46,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:46,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 23:22:46,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:46,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1618 [2020-10-14 23:22:46,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:46,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:46,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:22:46,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:46,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 23:22:46,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:47,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:47,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:47,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:47,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:47,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:47,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:47,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:47,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:47,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:47,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:47,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:47,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:47,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:47,331 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:47,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [897482350] [2020-10-14 23:22:47,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:47,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:22:47,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578146611] [2020-10-14 23:22:47,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:22:47,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:47,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:22:47,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:22:47,333 INFO L87 Difference]: Start difference. First operand 680 states and 734 transitions. Second operand 15 states. [2020-10-14 23:22:48,530 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2020-10-14 23:22:49,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:49,276 INFO L93 Difference]: Finished difference Result 759 states and 821 transitions. [2020-10-14 23:22:49,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 23:22:49,280 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 71 [2020-10-14 23:22:49,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:49,283 INFO L225 Difference]: With dead ends: 759 [2020-10-14 23:22:49,283 INFO L226 Difference]: Without dead ends: 694 [2020-10-14 23:22:49,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=114, Invalid=588, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:22:49,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-10-14 23:22:49,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 646. [2020-10-14 23:22:49,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 646 states. [2020-10-14 23:22:49,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 689 transitions. [2020-10-14 23:22:49,324 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 689 transitions. Word has length 71 [2020-10-14 23:22:49,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:49,324 INFO L479 AbstractCegarLoop]: Abstraction has 646 states and 689 transitions. [2020-10-14 23:22:49,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:22:49,324 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 689 transitions. [2020-10-14 23:22:49,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-14 23:22:49,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:49,326 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 23:22:49,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-14 23:22:49,326 INFO L427 AbstractCegarLoop]: === Iteration 49 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:49,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:49,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1833916493, now seen corresponding path program 8 times [2020-10-14 23:22:49,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:49,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058714749] [2020-10-14 23:22:49,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:49,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:49,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:51,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:53,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:53,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 23:22:53,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:22:53,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4189 [2020-10-14 23:22:53,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:53,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:53,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:22:53,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:53,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-14 23:22:53,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:54,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:22:54,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:54,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:54,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:54,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:22:54,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:54,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:22:54,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:54,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:54,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:22:54,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:22:54,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:22:54,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:22:54,376 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 13 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:22:54,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1058714749] [2020-10-14 23:22:54,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:22:54,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:22:54,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553328385] [2020-10-14 23:22:54,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:22:54,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:22:54,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:22:54,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:22:54,377 INFO L87 Difference]: Start difference. First operand 646 states and 689 transitions. Second operand 17 states. [2020-10-14 23:22:57,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:22:57,349 INFO L93 Difference]: Finished difference Result 696 states and 741 transitions. [2020-10-14 23:22:57,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 23:22:57,349 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 73 [2020-10-14 23:22:57,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:22:57,353 INFO L225 Difference]: With dead ends: 696 [2020-10-14 23:22:57,353 INFO L226 Difference]: Without dead ends: 684 [2020-10-14 23:22:57,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=61, Invalid=491, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:22:57,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2020-10-14 23:22:57,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 646. [2020-10-14 23:22:57,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 646 states. [2020-10-14 23:22:57,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 689 transitions. [2020-10-14 23:22:57,382 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 689 transitions. Word has length 73 [2020-10-14 23:22:57,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:22:57,382 INFO L479 AbstractCegarLoop]: Abstraction has 646 states and 689 transitions. [2020-10-14 23:22:57,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:22:57,382 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 689 transitions. [2020-10-14 23:22:57,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-14 23:22:57,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:22:57,383 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:22:57,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-14 23:22:57,384 INFO L427 AbstractCegarLoop]: === Iteration 50 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:22:57,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:22:57,384 INFO L82 PathProgramCache]: Analyzing trace with hash 718830329, now seen corresponding path program 3 times [2020-10-14 23:22:57,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:22:57,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811856963] [2020-10-14 23:22:57,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:22:57,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:22:57,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:22:59,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:22:59,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 23:22:59,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:22:59,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2238 [2020-10-14 23:22:59,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:22:59,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:22:59,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:22:59,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:22:59,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-14 23:22:59,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:00,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:00,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:00,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:00,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:00,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:00,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:00,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:00,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:00,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:00,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:00,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:00,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:00,557 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:00,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811856963] [2020-10-14 23:23:00,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:00,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 23:23:00,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277012769] [2020-10-14 23:23:00,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 23:23:00,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:00,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 23:23:00,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:23:00,558 INFO L87 Difference]: Start difference. First operand 646 states and 689 transitions. Second operand 18 states. [2020-10-14 23:23:04,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:04,933 INFO L93 Difference]: Finished difference Result 713 states and 757 transitions. [2020-10-14 23:23:04,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 23:23:04,934 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 73 [2020-10-14 23:23:04,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:04,938 INFO L225 Difference]: With dead ends: 713 [2020-10-14 23:23:04,938 INFO L226 Difference]: Without dead ends: 711 [2020-10-14 23:23:04,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=97, Invalid=959, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 23:23:04,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2020-10-14 23:23:04,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 643. [2020-10-14 23:23:04,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-10-14 23:23:04,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 686 transitions. [2020-10-14 23:23:04,967 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 686 transitions. Word has length 73 [2020-10-14 23:23:04,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:04,967 INFO L479 AbstractCegarLoop]: Abstraction has 643 states and 686 transitions. [2020-10-14 23:23:04,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 23:23:04,967 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 686 transitions. [2020-10-14 23:23:04,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-14 23:23:04,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:04,968 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:04,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-14 23:23:04,968 INFO L427 AbstractCegarLoop]: === Iteration 51 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:04,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:04,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1563657525, now seen corresponding path program 8 times [2020-10-14 23:23:04,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:04,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113203717] [2020-10-14 23:23:04,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:05,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:06,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:07,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:07,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 23:23:07,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:23:07,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2553 [2020-10-14 23:23:07,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:07,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:07,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:23:07,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:07,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 23:23:07,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:08,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:08,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:08,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:08,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:08,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:08,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:08,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:08,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:08,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:08,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:08,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:08,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:08,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:08,548 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 6 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:08,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113203717] [2020-10-14 23:23:08,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:08,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:23:08,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194534829] [2020-10-14 23:23:08,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:23:08,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:08,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:23:08,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:23:08,550 INFO L87 Difference]: Start difference. First operand 643 states and 686 transitions. Second operand 17 states. [2020-10-14 23:23:11,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:11,792 INFO L93 Difference]: Finished difference Result 685 states and 728 transitions. [2020-10-14 23:23:11,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 23:23:11,793 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 73 [2020-10-14 23:23:11,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:11,796 INFO L225 Difference]: With dead ends: 685 [2020-10-14 23:23:11,797 INFO L226 Difference]: Without dead ends: 548 [2020-10-14 23:23:11,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=82, Invalid=730, Unknown=0, NotChecked=0, Total=812 [2020-10-14 23:23:11,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2020-10-14 23:23:11,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 536. [2020-10-14 23:23:11,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-10-14 23:23:11,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 570 transitions. [2020-10-14 23:23:11,822 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 570 transitions. Word has length 73 [2020-10-14 23:23:11,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:11,822 INFO L479 AbstractCegarLoop]: Abstraction has 536 states and 570 transitions. [2020-10-14 23:23:11,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:23:11,822 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 570 transitions. [2020-10-14 23:23:11,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-14 23:23:11,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:11,823 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:11,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-14 23:23:11,824 INFO L427 AbstractCegarLoop]: === Iteration 52 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:11,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:11,824 INFO L82 PathProgramCache]: Analyzing trace with hash -2014716457, now seen corresponding path program 4 times [2020-10-14 23:23:11,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:11,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57855513] [2020-10-14 23:23:11,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:12,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:12,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:15,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:15,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 23:23:15,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:15,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3131 [2020-10-14 23:23:15,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:15,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:15,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:23:15,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:15,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 23:23:15,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:15,519 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2020-10-14 23:23:15,658 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2020-10-14 23:23:15,910 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-10-14 23:23:16,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:16,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:16,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:16,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:16,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:16,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:16,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:23:16,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:16,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:16,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:16,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:16,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:16,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:16,286 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:16,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57855513] [2020-10-14 23:23:16,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:16,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 23:23:16,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121515769] [2020-10-14 23:23:16,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 23:23:16,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:16,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 23:23:16,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:23:16,287 INFO L87 Difference]: Start difference. First operand 536 states and 570 transitions. Second operand 18 states. [2020-10-14 23:23:19,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:19,617 INFO L93 Difference]: Finished difference Result 564 states and 599 transitions. [2020-10-14 23:23:19,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:23:19,618 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 76 [2020-10-14 23:23:19,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:19,621 INFO L225 Difference]: With dead ends: 564 [2020-10-14 23:23:19,621 INFO L226 Difference]: Without dead ends: 562 [2020-10-14 23:23:19,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=110, Invalid=820, Unknown=0, NotChecked=0, Total=930 [2020-10-14 23:23:19,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2020-10-14 23:23:19,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 518. [2020-10-14 23:23:19,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 518 states. [2020-10-14 23:23:19,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 552 transitions. [2020-10-14 23:23:19,649 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 552 transitions. Word has length 76 [2020-10-14 23:23:19,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:19,649 INFO L479 AbstractCegarLoop]: Abstraction has 518 states and 552 transitions. [2020-10-14 23:23:19,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 23:23:19,650 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 552 transitions. [2020-10-14 23:23:19,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-14 23:23:19,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:19,650 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:19,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-14 23:23:19,651 INFO L427 AbstractCegarLoop]: === Iteration 53 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:19,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:19,651 INFO L82 PathProgramCache]: Analyzing trace with hash 2134419753, now seen corresponding path program 9 times [2020-10-14 23:23:19,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:19,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2088311662] [2020-10-14 23:23:19,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:19,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:19,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:22,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:22,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 23:23:22,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:22,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2510 [2020-10-14 23:23:22,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:22,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:22,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:23:22,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:22,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 23:23:22,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:22,913 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2020-10-14 23:23:23,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:23,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:23,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:23,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:23,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:23,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:23,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:23,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:23,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:23,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:23,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:23,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:23,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:23,156 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:23,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2088311662] [2020-10-14 23:23:23,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:23,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:23:23,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315798075] [2020-10-14 23:23:23,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:23:23,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:23,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:23:23,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:23:23,158 INFO L87 Difference]: Start difference. First operand 518 states and 552 transitions. Second operand 17 states. [2020-10-14 23:23:26,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:26,334 INFO L93 Difference]: Finished difference Result 570 states and 606 transitions. [2020-10-14 23:23:26,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 23:23:26,334 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 76 [2020-10-14 23:23:26,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:26,338 INFO L225 Difference]: With dead ends: 570 [2020-10-14 23:23:26,338 INFO L226 Difference]: Without dead ends: 568 [2020-10-14 23:23:26,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=86, Invalid=726, Unknown=0, NotChecked=0, Total=812 [2020-10-14 23:23:26,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2020-10-14 23:23:26,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 534. [2020-10-14 23:23:26,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 534 states. [2020-10-14 23:23:26,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 569 transitions. [2020-10-14 23:23:26,363 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 569 transitions. Word has length 76 [2020-10-14 23:23:26,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:26,363 INFO L479 AbstractCegarLoop]: Abstraction has 534 states and 569 transitions. [2020-10-14 23:23:26,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:23:26,364 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 569 transitions. [2020-10-14 23:23:26,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-14 23:23:26,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:26,365 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:26,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-14 23:23:26,365 INFO L427 AbstractCegarLoop]: === Iteration 54 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:26,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:26,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1019333589, now seen corresponding path program 3 times [2020-10-14 23:23:26,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:26,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796893033] [2020-10-14 23:23:26,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:26,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:26,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:28,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:28,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 23:23:28,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:28,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2396 [2020-10-14 23:23:28,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:28,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:28,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:23:28,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:28,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 23:23:28,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:29,210 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2020-10-14 23:23:29,331 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2020-10-14 23:23:29,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:29,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:29,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:29,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:29,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:29,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:29,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:29,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:29,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:29,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:29,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:29,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:29,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:29,972 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 4 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:29,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796893033] [2020-10-14 23:23:29,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:29,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:23:29,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379556506] [2020-10-14 23:23:29,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:23:29,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:29,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:23:29,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:23:29,974 INFO L87 Difference]: Start difference. First operand 534 states and 569 transitions. Second operand 17 states. [2020-10-14 23:23:32,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:32,338 INFO L93 Difference]: Finished difference Result 574 states and 611 transitions. [2020-10-14 23:23:32,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:23:32,339 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 76 [2020-10-14 23:23:32,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:32,342 INFO L225 Difference]: With dead ends: 574 [2020-10-14 23:23:32,342 INFO L226 Difference]: Without dead ends: 512 [2020-10-14 23:23:32,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=92, Invalid=610, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:23:32,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2020-10-14 23:23:32,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 473. [2020-10-14 23:23:32,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2020-10-14 23:23:32,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 503 transitions. [2020-10-14 23:23:32,363 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 503 transitions. Word has length 76 [2020-10-14 23:23:32,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:32,364 INFO L479 AbstractCegarLoop]: Abstraction has 473 states and 503 transitions. [2020-10-14 23:23:32,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:23:32,364 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 503 transitions. [2020-10-14 23:23:32,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-14 23:23:32,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:32,365 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:32,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-14 23:23:32,365 INFO L427 AbstractCegarLoop]: === Iteration 55 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:32,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:32,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1661459510, now seen corresponding path program 9 times [2020-10-14 23:23:32,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:32,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [718190265] [2020-10-14 23:23:32,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:32,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:32,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:34,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:36,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:36,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 23:23:36,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:23:36,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3997 [2020-10-14 23:23:36,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:36,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:36,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:23:36,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:36,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 23:23:36,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:23:36,947 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2020-10-14 23:23:37,153 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61 [2020-10-14 23:23:37,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:37,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:37,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:37,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:37,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:37,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:37,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:37,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:37,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:37,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:37,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:37,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:37,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:37,831 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 7 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:37,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [718190265] [2020-10-14 23:23:37,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:37,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 23:23:37,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601096764] [2020-10-14 23:23:37,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 23:23:37,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:37,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 23:23:37,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:23:37,832 INFO L87 Difference]: Start difference. First operand 473 states and 503 transitions. Second operand 18 states. [2020-10-14 23:23:39,995 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-10-14 23:23:42,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:42,442 INFO L93 Difference]: Finished difference Result 523 states and 560 transitions. [2020-10-14 23:23:42,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:23:42,442 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 78 [2020-10-14 23:23:42,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:42,446 INFO L225 Difference]: With dead ends: 523 [2020-10-14 23:23:42,446 INFO L226 Difference]: Without dead ends: 463 [2020-10-14 23:23:42,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=89, Invalid=903, Unknown=0, NotChecked=0, Total=992 [2020-10-14 23:23:42,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2020-10-14 23:23:42,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 434. [2020-10-14 23:23:42,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2020-10-14 23:23:42,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 462 transitions. [2020-10-14 23:23:42,477 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 462 transitions. Word has length 78 [2020-10-14 23:23:42,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:42,477 INFO L479 AbstractCegarLoop]: Abstraction has 434 states and 462 transitions. [2020-10-14 23:23:42,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 23:23:42,478 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 462 transitions. [2020-10-14 23:23:42,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-14 23:23:42,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:42,479 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:42,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-14 23:23:42,479 INFO L427 AbstractCegarLoop]: === Iteration 56 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:42,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:42,479 INFO L82 PathProgramCache]: Analyzing trace with hash 627175224, now seen corresponding path program 10 times [2020-10-14 23:23:42,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:42,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236326733] [2020-10-14 23:23:42,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:42,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:42,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:44,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:46,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:47,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:47,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-14 23:23:47,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:23:47,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5078 [2020-10-14 23:23:47,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:47,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:47,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:23:47,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:47,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 23:23:47,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:48,197 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2020-10-14 23:23:48,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:48,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:48,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:48,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:48,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:48,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:48,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:48,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:48,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:48,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:48,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:48,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:48,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:48,493 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 12 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:48,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236326733] [2020-10-14 23:23:48,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:48,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:23:48,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482789556] [2020-10-14 23:23:48,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:23:48,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:48,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:23:48,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:23:48,494 INFO L87 Difference]: Start difference. First operand 434 states and 462 transitions. Second operand 17 states. [2020-10-14 23:23:51,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:51,132 INFO L93 Difference]: Finished difference Result 577 states and 614 transitions. [2020-10-14 23:23:51,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 23:23:51,132 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 79 [2020-10-14 23:23:51,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:51,136 INFO L225 Difference]: With dead ends: 577 [2020-10-14 23:23:51,136 INFO L226 Difference]: Without dead ends: 565 [2020-10-14 23:23:51,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:23:51,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-10-14 23:23:51,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 552. [2020-10-14 23:23:51,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552 states. [2020-10-14 23:23:51,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 586 transitions. [2020-10-14 23:23:51,162 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 586 transitions. Word has length 79 [2020-10-14 23:23:51,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:51,162 INFO L479 AbstractCegarLoop]: Abstraction has 552 states and 586 transitions. [2020-10-14 23:23:51,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:23:51,163 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 586 transitions. [2020-10-14 23:23:51,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-14 23:23:51,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:51,163 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:51,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-14 23:23:51,164 INFO L427 AbstractCegarLoop]: === Iteration 57 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:51,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:51,164 INFO L82 PathProgramCache]: Analyzing trace with hash -487910940, now seen corresponding path program 4 times [2020-10-14 23:23:51,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:51,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282016939] [2020-10-14 23:23:51,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:51,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:51,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:53,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:53,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-14 23:23:53,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:53,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2549 [2020-10-14 23:23:53,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:53,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:53,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 23:23:53,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:53,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 23:23:53,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:54,639 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 75 [2020-10-14 23:23:54,797 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2020-10-14 23:23:55,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:55,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:55,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:55,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:55,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:55,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:55,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:55,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:55,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:55,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:55,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:55,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:55,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:55,198 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:55,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282016939] [2020-10-14 23:23:55,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:55,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 23:23:55,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858516802] [2020-10-14 23:23:55,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 23:23:55,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:55,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 23:23:55,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:23:55,200 INFO L87 Difference]: Start difference. First operand 552 states and 586 transitions. Second operand 18 states. [2020-10-14 23:23:59,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:59,210 INFO L93 Difference]: Finished difference Result 696 states and 743 transitions. [2020-10-14 23:23:59,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:23:59,211 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 79 [2020-10-14 23:23:59,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:59,215 INFO L225 Difference]: With dead ends: 696 [2020-10-14 23:23:59,215 INFO L226 Difference]: Without dead ends: 694 [2020-10-14 23:23:59,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=84, Invalid=728, Unknown=0, NotChecked=0, Total=812 [2020-10-14 23:23:59,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-10-14 23:23:59,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 619. [2020-10-14 23:23:59,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 619 states. [2020-10-14 23:23:59,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 659 transitions. [2020-10-14 23:23:59,278 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 659 transitions. Word has length 79 [2020-10-14 23:23:59,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:59,279 INFO L479 AbstractCegarLoop]: Abstraction has 619 states and 659 transitions. [2020-10-14 23:23:59,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 23:23:59,279 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 659 transitions. [2020-10-14 23:23:59,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-14 23:23:59,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:59,281 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 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] [2020-10-14 23:23:59,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-14 23:23:59,285 INFO L427 AbstractCegarLoop]: === Iteration 58 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:59,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:59,285 INFO L82 PathProgramCache]: Analyzing trace with hash -472392222, now seen corresponding path program 5 times [2020-10-14 23:23:59,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:59,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414784630] [2020-10-14 23:23:59,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:59,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:59,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:01,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:01,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-14 23:24:01,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:01,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2196 [2020-10-14 23:24:01,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:01,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:01,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:24:01,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:01,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 23:24:01,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:02,289 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 56 [2020-10-14 23:24:02,449 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 63 [2020-10-14 23:24:02,604 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 65 [2020-10-14 23:24:02,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:02,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:02,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:02,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:02,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:02,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:02,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:02,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:02,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:02,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:02,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:02,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:02,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:02,956 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 4 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:02,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414784630] [2020-10-14 23:24:02,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:02,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:24:02,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511070080] [2020-10-14 23:24:02,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:24:02,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:02,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:24:02,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:24:02,958 INFO L87 Difference]: Start difference. First operand 619 states and 659 transitions. Second operand 17 states. [2020-10-14 23:24:06,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:06,102 INFO L93 Difference]: Finished difference Result 648 states and 691 transitions. [2020-10-14 23:24:06,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 23:24:06,103 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 79 [2020-10-14 23:24:06,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:06,105 INFO L225 Difference]: With dead ends: 648 [2020-10-14 23:24:06,105 INFO L226 Difference]: Without dead ends: 580 [2020-10-14 23:24:06,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2020-10-14 23:24:06,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-10-14 23:24:06,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 525. [2020-10-14 23:24:06,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2020-10-14 23:24:06,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 561 transitions. [2020-10-14 23:24:06,138 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 561 transitions. Word has length 79 [2020-10-14 23:24:06,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:06,138 INFO L479 AbstractCegarLoop]: Abstraction has 525 states and 561 transitions. [2020-10-14 23:24:06,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:24:06,138 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 561 transitions. [2020-10-14 23:24:06,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-14 23:24:06,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:06,140 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:06,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-14 23:24:06,140 INFO L427 AbstractCegarLoop]: === Iteration 59 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:06,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:06,140 INFO L82 PathProgramCache]: Analyzing trace with hash 2017975212, now seen corresponding path program 10 times [2020-10-14 23:24:06,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:06,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [613130289] [2020-10-14 23:24:06,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:06,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:06,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:09,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:09,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 23:24:09,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:09,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3134 [2020-10-14 23:24:09,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:09,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:09,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 23:24:09,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:09,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 23:24:09,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:10,048 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2020-10-14 23:24:10,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:10,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:10,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:10,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:10,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:10,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:10,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:10,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:10,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:10,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:10,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:10,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:10,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:10,536 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:10,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [613130289] [2020-10-14 23:24:10,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:10,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 23:24:10,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240375694] [2020-10-14 23:24:10,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:24:10,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:10,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:24:10,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:24:10,539 INFO L87 Difference]: Start difference. First operand 525 states and 561 transitions. Second operand 19 states. [2020-10-14 23:24:15,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:15,253 INFO L93 Difference]: Finished difference Result 716 states and 767 transitions. [2020-10-14 23:24:15,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:24:15,254 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 81 [2020-10-14 23:24:15,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:15,257 INFO L225 Difference]: With dead ends: 716 [2020-10-14 23:24:15,257 INFO L226 Difference]: Without dead ends: 714 [2020-10-14 23:24:15,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=98, Invalid=958, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 23:24:15,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2020-10-14 23:24:15,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 554. [2020-10-14 23:24:15,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 554 states. [2020-10-14 23:24:15,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 591 transitions. [2020-10-14 23:24:15,290 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 591 transitions. Word has length 81 [2020-10-14 23:24:15,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:15,291 INFO L479 AbstractCegarLoop]: Abstraction has 554 states and 591 transitions. [2020-10-14 23:24:15,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:24:15,291 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 591 transitions. [2020-10-14 23:24:15,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-14 23:24:15,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:15,292 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:15,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-14 23:24:15,293 INFO L427 AbstractCegarLoop]: === Iteration 60 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:15,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:15,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1961429461, now seen corresponding path program 11 times [2020-10-14 23:24:15,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:15,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535372121] [2020-10-14 23:24:15,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:15,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:15,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:17,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking...