/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-token-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:49:39,973 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:49:39,975 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:49:40,000 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:49:40,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:49:40,002 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:49:40,003 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:49:40,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:49:40,007 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:49:40,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:49:40,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:49:40,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:49:40,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:49:40,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:49:40,017 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:49:40,018 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:49:40,019 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:49:40,020 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:49:40,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:49:40,023 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:49:40,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:49:40,026 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:49:40,027 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:49:40,028 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:49:40,030 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:49:40,030 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:49:40,030 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:49:40,031 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:49:40,032 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:49:40,033 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:49:40,033 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:49:40,034 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:49:40,034 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:49:40,035 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:49:40,036 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:49:40,036 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:49:40,037 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:49:40,037 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:49:40,038 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:49:40,038 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:49:40,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:49:40,040 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 04:49:40,064 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:49:40,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:49:40,065 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:49:40,065 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:49:40,066 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:49:40,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:49:40,066 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:49:40,066 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:49:40,066 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:49:40,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:49:40,067 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:49:40,067 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:49:40,067 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:49:40,067 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:49:40,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:49:40,068 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:49:40,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:49:40,068 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:49:40,068 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:49:40,069 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:49:40,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:49:40,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:49:40,069 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:49:40,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:49:40,070 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:49:40,070 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:49:40,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:49:40,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:49:40,070 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:49:40,070 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:49:40,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:49:40,402 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:49:40,408 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:49:40,410 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:49:40,412 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:49:40,413 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-token-1.i [2020-10-14 04:49:40,491 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42c308c9a/649446f603214224a70a2a71106d1c23/FLAG55c6dc70f [2020-10-14 04:49:41,092 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:49:41,092 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-token-1.i [2020-10-14 04:49:41,112 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42c308c9a/649446f603214224a70a2a71106d1c23/FLAG55c6dc70f [2020-10-14 04:49:41,336 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42c308c9a/649446f603214224a70a2a71106d1c23 [2020-10-14 04:49:41,347 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:49:41,349 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:49:41,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:49:41,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:49:41,354 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:49:41,355 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:49:41" (1/1) ... [2020-10-14 04:49:41,358 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60f5cdb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:49:41, skipping insertion in model container [2020-10-14 04:49:41,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:49:41" (1/1) ... [2020-10-14 04:49:41,366 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:49:41,422 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:49:41,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:49:41,857 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:49:41,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:49:41,962 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:49:41,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:49:41 WrapperNode [2020-10-14 04:49:41,963 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:49:41,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:49:41,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:49:41,964 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:49:41,983 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:49:41" (1/1) ... [2020-10-14 04:49:41,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:49:41" (1/1) ... [2020-10-14 04:49:42,023 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:49:41" (1/1) ... [2020-10-14 04:49:42,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:49:41" (1/1) ... [2020-10-14 04:49:42,058 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:49:41" (1/1) ... [2020-10-14 04:49:42,069 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:49:41" (1/1) ... [2020-10-14 04:49:42,079 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:49:41" (1/1) ... [2020-10-14 04:49:42,093 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:49:42,094 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:49:42,094 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:49:42,094 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:49:42,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:49:41" (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 04:49:42,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:49:42,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:49:42,178 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:49:42,178 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 04:49:42,178 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 04:49:42,179 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 04:49:42,180 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 04:49:42,181 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 04:49:42,181 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 04:49:42,181 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 04:49:42,181 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 04:49:42,182 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 04:49:42,182 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 04:49:42,182 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 04:49:42,182 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 04:49:42,183 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 04:49:42,184 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 04:49:42,184 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 04:49:42,184 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 04:49:42,184 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 04:49:42,184 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 04:49:42,185 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 04:49:42,185 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 04:49:42,185 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 04:49:42,185 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 04:49:42,186 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 04:49:42,186 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 04:49:42,186 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 04:49:42,187 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 04:49:42,187 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 04:49:42,187 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 04:49:42,187 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 04:49:42,187 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 04:49:42,187 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 04:49:42,188 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 04:49:42,188 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 04:49:42,188 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 04:49:42,188 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 04:49:42,188 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 04:49:42,188 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 04:49:42,188 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 04:49:42,189 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 04:49:42,189 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 04:49:42,189 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 04:49:42,189 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 04:49:42,189 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 04:49:42,189 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 04:49:42,189 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 04:49:42,190 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 04:49:42,190 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 04:49:42,190 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 04:49:42,191 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 04:49:42,191 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 04:49:42,191 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 04:49:42,191 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 04:49:42,192 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 04:49:42,192 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 04:49:42,192 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 04:49:42,192 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 04:49:42,192 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 04:49:42,192 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 04:49:42,192 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 04:49:42,193 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 04:49:42,193 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 04:49:42,193 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 04:49:42,193 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 04:49:42,194 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:49:42,195 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 04:49:42,196 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 04:49:42,196 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 04:49:42,196 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 04:49:42,198 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 04:49:42,198 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 04:49:42,198 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 04:49:42,198 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 04:49:42,198 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 04:49:42,198 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 04:49:42,199 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 04:49:42,199 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 04:49:42,199 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 04:49:42,199 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 04:49:42,199 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 04:49:42,200 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 04:49:42,201 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 04:49:42,201 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 04:49:42,201 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 04:49:42,201 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 04:49:42,201 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 04:49:42,201 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 04:49:42,202 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 04:49:42,202 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 04:49:42,202 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 04:49:42,202 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 04:49:42,202 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 04:49:42,202 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 04:49:42,202 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 04:49:42,203 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 04:49:42,203 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 04:49:42,203 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 04:49:42,203 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 04:49:42,203 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 04:49:42,203 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 04:49:42,203 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 04:49:42,204 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 04:49:42,204 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 04:49:42,204 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 04:49:42,204 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:49:42,204 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:49:42,204 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:49:42,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 04:49:42,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 04:49:42,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 04:49:42,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 04:49:42,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 04:49:42,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 04:49:42,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:49:42,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:49:42,855 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:49:42,856 INFO L295 CfgBuilder]: Removed 15 assume(true) statements. [2020-10-14 04:49:42,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:49:42 BoogieIcfgContainer [2020-10-14 04:49:42,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:49:42,862 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:49:42,862 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:49:42,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:49:42,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:49:41" (1/3) ... [2020-10-14 04:49:42,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@435dcb00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:49:42, skipping insertion in model container [2020-10-14 04:49:42,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:49:41" (2/3) ... [2020-10-14 04:49:42,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@435dcb00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:49:42, skipping insertion in model container [2020-10-14 04:49:42,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:49:42" (3/3) ... [2020-10-14 04:49:42,869 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-token-1.i [2020-10-14 04:49:42,881 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:49:42,889 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-14 04:49:42,904 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-14 04:49:42,929 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:49:42,929 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:49:42,929 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:49:42,929 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:49:42,930 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:49:42,930 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:49:42,930 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:49:42,930 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:49:42,951 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-10-14 04:49:42,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-14 04:49:42,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:42,958 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:49:42,958 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:42,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:42,964 INFO L82 PathProgramCache]: Analyzing trace with hash 68430596, now seen corresponding path program 1 times [2020-10-14 04:49:42,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:42,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1242682683] [2020-10-14 04:49:42,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:43,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:43,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:43,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:43,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:43,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 04:49:43,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:49:43,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 415 [2020-10-14 04:49:43,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:43,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:43,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:43,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 04:49:43,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:43,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 04:49:43,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:49:43,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:43,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:43,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:43,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:49:43,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:43,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:49:43,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:43,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:43,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:43,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:49:43,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:43,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:43,612 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 04:49:43,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1242682683] [2020-10-14 04:49:43,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:49:43,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:49:43,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661215127] [2020-10-14 04:49:43,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 04:49:43,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:49:43,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 04:49:43,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 04:49:43,638 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 3 states. [2020-10-14 04:49:43,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:49:43,789 INFO L93 Difference]: Finished difference Result 92 states and 138 transitions. [2020-10-14 04:49:43,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 04:49:43,791 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-14 04:49:43,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:49:43,802 INFO L225 Difference]: With dead ends: 92 [2020-10-14 04:49:43,802 INFO L226 Difference]: Without dead ends: 43 [2020-10-14 04:49:43,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 04:49:43,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-14 04:49:43,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-10-14 04:49:43,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-14 04:49:43,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2020-10-14 04:49:43,850 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 10 [2020-10-14 04:49:43,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:49:43,850 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2020-10-14 04:49:43,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 04:49:43,851 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2020-10-14 04:49:43,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-14 04:49:43,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:43,852 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:49:43,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:49:43,852 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:43,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:43,853 INFO L82 PathProgramCache]: Analyzing trace with hash 67663975, now seen corresponding path program 1 times [2020-10-14 04:49:43,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:43,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483290264] [2020-10-14 04:49:43,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:43,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:43,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:44,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:44,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 04:49:44,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:44,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-14 04:49:44,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:44,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:44,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:49:44,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 04:49:44,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:49:44,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:44,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:49:44,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:44,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:44,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:44,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:49:44,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:44,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:49:44,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:44,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:44,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:44,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:49:44,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:44,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:44,122 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 04:49:44,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483290264] [2020-10-14 04:49:44,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:49:44,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:49:44,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520853910] [2020-10-14 04:49:44,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:49:44,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:49:44,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:49:44,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:49:44,126 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 4 states. [2020-10-14 04:49:44,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:49:44,276 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2020-10-14 04:49:44,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 04:49:44,277 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-14 04:49:44,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:49:44,278 INFO L225 Difference]: With dead ends: 43 [2020-10-14 04:49:44,279 INFO L226 Difference]: Without dead ends: 41 [2020-10-14 04:49:44,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:49:44,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-14 04:49:44,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-14 04:49:44,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 04:49:44,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2020-10-14 04:49:44,287 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 10 [2020-10-14 04:49:44,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:49:44,288 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2020-10-14 04:49:44,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:49:44,288 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2020-10-14 04:49:44,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-14 04:49:44,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:44,289 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:49:44,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:49:44,290 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:44,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:44,290 INFO L82 PathProgramCache]: Analyzing trace with hash 2097539711, now seen corresponding path program 1 times [2020-10-14 04:49:44,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:44,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1678919640] [2020-10-14 04:49:44,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:44,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:44,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:44,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:44,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 04:49:44,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:44,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 04:49:44,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:44,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:44,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 04:49:44,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:49:44,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 04:49:44,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:44,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:49:44,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:44,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:44,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:44,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:49:44,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:44,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:49:44,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:44,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:44,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:44,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:49:44,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:44,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:44,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:49:44,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1678919640] [2020-10-14 04:49:44,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:49:44,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 04:49:44,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127351861] [2020-10-14 04:49:44,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:49:44,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:49:44,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:49:44,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:49:44,430 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 5 states. [2020-10-14 04:49:44,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:49:44,584 INFO L93 Difference]: Finished difference Result 67 states and 70 transitions. [2020-10-14 04:49:44,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:49:44,584 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-14 04:49:44,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:49:44,586 INFO L225 Difference]: With dead ends: 67 [2020-10-14 04:49:44,586 INFO L226 Difference]: Without dead ends: 65 [2020-10-14 04:49:44,587 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 04:49:44,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-14 04:49:44,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 39. [2020-10-14 04:49:44,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-14 04:49:44,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-10-14 04:49:44,595 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 11 [2020-10-14 04:49:44,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:49:44,596 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-10-14 04:49:44,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:49:44,596 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-10-14 04:49:44,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-14 04:49:44,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:44,597 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:49:44,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:49:44,598 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:44,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:44,598 INFO L82 PathProgramCache]: Analyzing trace with hash -409997773, now seen corresponding path program 1 times [2020-10-14 04:49:44,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:44,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [915630460] [2020-10-14 04:49:44,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:44,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:44,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:44,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:44,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:44,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 04:49:44,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:49:44,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-10-14 04:49:44,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:44,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:44,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:49:44,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:49:44,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 04:49:44,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:44,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:49:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:45,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:45,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:45,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:49:45,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:45,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:49:45,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:45,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:45,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:45,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:49:45,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:45,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:45,011 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 04:49:45,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [915630460] [2020-10-14 04:49:45,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:49:45,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 04:49:45,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007636990] [2020-10-14 04:49:45,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:49:45,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:49:45,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:49:45,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:49:45,014 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 6 states. [2020-10-14 04:49:45,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:49:45,267 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2020-10-14 04:49:45,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 04:49:45,268 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-14 04:49:45,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:49:45,270 INFO L225 Difference]: With dead ends: 58 [2020-10-14 04:49:45,270 INFO L226 Difference]: Without dead ends: 56 [2020-10-14 04:49:45,271 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 04:49:45,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-14 04:49:45,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 48. [2020-10-14 04:49:45,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-14 04:49:45,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-10-14 04:49:45,280 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 16 [2020-10-14 04:49:45,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:49:45,280 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-10-14 04:49:45,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:49:45,281 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-10-14 04:49:45,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-14 04:49:45,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:45,282 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:49:45,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:49:45,282 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:45,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:45,283 INFO L82 PathProgramCache]: Analyzing trace with hash -409960037, now seen corresponding path program 1 times [2020-10-14 04:49:45,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:45,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106747254] [2020-10-14 04:49:45,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:45,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:45,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:45,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:45,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 04:49:45,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:45,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-14 04:49:45,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:45,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:45,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:49:45,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:49:45,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 04:49:45,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:45,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:49:45,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:45,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:45,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:45,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:49:45,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:45,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:49:45,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:45,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:45,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:45,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:49:45,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:45,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:45,515 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 04:49:45,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106747254] [2020-10-14 04:49:45,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:49:45,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 04:49:45,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588310092] [2020-10-14 04:49:45,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:49:45,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:49:45,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:49:45,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:49:45,519 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 6 states. [2020-10-14 04:49:45,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:49:45,844 INFO L93 Difference]: Finished difference Result 76 states and 81 transitions. [2020-10-14 04:49:45,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 04:49:45,845 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-14 04:49:45,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:49:45,846 INFO L225 Difference]: With dead ends: 76 [2020-10-14 04:49:45,846 INFO L226 Difference]: Without dead ends: 50 [2020-10-14 04:49:45,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:49:45,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-14 04:49:45,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-10-14 04:49:45,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-14 04:49:45,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2020-10-14 04:49:45,855 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 16 [2020-10-14 04:49:45,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:49:45,856 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2020-10-14 04:49:45,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:49:45,856 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2020-10-14 04:49:45,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 04:49:45,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:45,858 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:49:45,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:49:45,858 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:45,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:45,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1407314597, now seen corresponding path program 1 times [2020-10-14 04:49:45,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:45,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643281748] [2020-10-14 04:49:45,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:45,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:46,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:46,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 04:49:46,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:46,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-14 04:49:46,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:46,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:46,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:49:46,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:49:46,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 04:49:46,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:49:46,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:49:46,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:46,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:46,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:46,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:49:46,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:46,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:49:46,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:46,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:46,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:46,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:49:46,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:46,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:46,192 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 04:49:46,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643281748] [2020-10-14 04:49:46,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:49:46,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 04:49:46,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065729128] [2020-10-14 04:49:46,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:49:46,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:49:46,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:49:46,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:49:46,196 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 7 states. [2020-10-14 04:49:46,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:49:46,568 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2020-10-14 04:49:46,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:49:46,569 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-14 04:49:46,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:49:46,571 INFO L225 Difference]: With dead ends: 56 [2020-10-14 04:49:46,571 INFO L226 Difference]: Without dead ends: 54 [2020-10-14 04:49:46,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:49:46,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-14 04:49:46,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2020-10-14 04:49:46,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-14 04:49:46,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2020-10-14 04:49:46,579 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 20 [2020-10-14 04:49:46,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:49:46,580 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2020-10-14 04:49:46,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:49:46,580 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2020-10-14 04:49:46,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 04:49:46,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:46,581 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:49:46,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:49:46,582 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:46,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:46,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1742711588, now seen corresponding path program 1 times [2020-10-14 04:49:46,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:46,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231489462] [2020-10-14 04:49:46,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:46,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:46,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:46,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:47,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:47,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 04:49:47,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:49:47,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 539 [2020-10-14 04:49:47,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:47,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:47,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:49:47,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:49:47,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 04:49:47,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:49:47,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:49:47,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:47,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:47,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:47,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:49:47,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:47,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:49:47,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:47,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:47,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:47,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:49:47,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:47,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:49:47,384 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 04:49:47,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231489462] [2020-10-14 04:49:47,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:49:47,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:49:47,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008920354] [2020-10-14 04:49:47,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:49:47,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:49:47,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:49:47,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:49:47,386 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 7 states. [2020-10-14 04:49:47,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:49:47,755 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2020-10-14 04:49:47,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 04:49:47,756 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-14 04:49:47,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:49:47,757 INFO L225 Difference]: With dead ends: 78 [2020-10-14 04:49:47,757 INFO L226 Difference]: Without dead ends: 60 [2020-10-14 04:49:47,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:49:47,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-14 04:49:47,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-10-14 04:49:47,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-14 04:49:47,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2020-10-14 04:49:47,773 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 20 [2020-10-14 04:49:47,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:49:47,773 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2020-10-14 04:49:47,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:49:47,774 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2020-10-14 04:49:47,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 04:49:47,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:47,777 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:49:47,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:49:47,777 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:47,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:47,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1742673852, now seen corresponding path program 1 times [2020-10-14 04:49:47,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:47,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [179707076] [2020-10-14 04:49:47,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:47,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:47,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:48,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:48,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 04:49:48,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:48,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-14 04:49:48,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:48,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:48,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:49:48,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:49:48,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 04:49:48,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:48,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:49:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:48,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:48,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:48,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:49:48,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:48,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:49:48,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:48,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:48,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:48,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:49:48,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:48,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:48,274 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 04:49:48,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [179707076] [2020-10-14 04:49:48,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:49:48,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:49:48,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455176247] [2020-10-14 04:49:48,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:49:48,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:49:48,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:49:48,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:49:48,276 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand 7 states. [2020-10-14 04:49:48,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:49:48,683 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2020-10-14 04:49:48,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 04:49:48,684 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-14 04:49:48,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:49:48,685 INFO L225 Difference]: With dead ends: 60 [2020-10-14 04:49:48,685 INFO L226 Difference]: Without dead ends: 58 [2020-10-14 04:49:48,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:49:48,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-14 04:49:48,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2020-10-14 04:49:48,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-14 04:49:48,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2020-10-14 04:49:48,704 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 20 [2020-10-14 04:49:48,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:49:48,704 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2020-10-14 04:49:48,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:49:48,706 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2020-10-14 04:49:48,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 04:49:48,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:48,707 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:49:48,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:49:48,709 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:48,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:48,709 INFO L82 PathProgramCache]: Analyzing trace with hash 961492076, now seen corresponding path program 1 times [2020-10-14 04:49:48,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:48,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129952991] [2020-10-14 04:49:48,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:48,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:48,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:48,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:48,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:48,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:49,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:49,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 04:49:49,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:49:49,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 508 [2020-10-14 04:49:49,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:49,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:49,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:49:49,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:49:49,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 04:49:49,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:49,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:49:49,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:49,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:49,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:49,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:49:49,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:49,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:49:49,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:49,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:49,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:49,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:49:49,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:49,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:49,354 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 04:49:49,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129952991] [2020-10-14 04:49:49,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:49:49,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 04:49:49,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105551714] [2020-10-14 04:49:49,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:49:49,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:49:49,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:49:49,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:49:49,356 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand 7 states. [2020-10-14 04:49:49,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:49:49,612 INFO L93 Difference]: Finished difference Result 70 states and 73 transitions. [2020-10-14 04:49:49,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 04:49:49,613 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-10-14 04:49:49,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:49:49,614 INFO L225 Difference]: With dead ends: 70 [2020-10-14 04:49:49,614 INFO L226 Difference]: Without dead ends: 66 [2020-10-14 04:49:49,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:49:49,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-14 04:49:49,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 60. [2020-10-14 04:49:49,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-14 04:49:49,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2020-10-14 04:49:49,621 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 26 [2020-10-14 04:49:49,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:49:49,621 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2020-10-14 04:49:49,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:49:49,622 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2020-10-14 04:49:49,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 04:49:49,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:49,623 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] [2020-10-14 04:49:49,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:49:49,623 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:49,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:49,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1379191243, now seen corresponding path program 1 times [2020-10-14 04:49:49,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:49,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1648259386] [2020-10-14 04:49:49,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:49,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:49,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:49,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:49,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:49,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 04:49:49,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:49:49,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-14 04:49:49,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:49,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:49,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:49:49,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 04:49:49,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 04:49:49,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:49,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:49:49,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:49,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:49,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:49,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:49:49,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:49,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:49:49,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:49,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:49,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:49,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:49:49,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:49,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:49,921 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 04:49:49,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1648259386] [2020-10-14 04:49:49,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:49:49,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 04:49:49,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894983833] [2020-10-14 04:49:49,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:49:49,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:49:49,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:49:49,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:49:49,924 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand 6 states. [2020-10-14 04:49:50,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:49:50,068 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2020-10-14 04:49:50,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 04:49:50,069 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-10-14 04:49:50,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:49:50,070 INFO L225 Difference]: With dead ends: 60 [2020-10-14 04:49:50,070 INFO L226 Difference]: Without dead ends: 58 [2020-10-14 04:49:50,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:49:50,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-14 04:49:50,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-10-14 04:49:50,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-14 04:49:50,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2020-10-14 04:49:50,076 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 26 [2020-10-14 04:49:50,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:49:50,076 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2020-10-14 04:49:50,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:49:50,077 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2020-10-14 04:49:50,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 04:49:50,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:50,078 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:49:50,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:49:50,078 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:50,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:50,079 INFO L82 PathProgramCache]: Analyzing trace with hash 1379228979, now seen corresponding path program 1 times [2020-10-14 04:49:50,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:50,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1023478232] [2020-10-14 04:49:50,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:50,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:50,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:50,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:50,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 04:49:50,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:50,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-14 04:49:50,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:50,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:50,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:49:50,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:49:50,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 04:49:50,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:49:50,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:49:50,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:50,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:50,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:50,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:49:50,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:50,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:49:50,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:50,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:50,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:50,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:49:50,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:50,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:50,423 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:49:50,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1023478232] [2020-10-14 04:49:50,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:49:50,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 04:49:50,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17058736] [2020-10-14 04:49:50,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 04:49:50,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:49:50,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 04:49:50,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 04:49:50,428 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand 8 states. [2020-10-14 04:49:50,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:49:50,770 INFO L93 Difference]: Finished difference Result 101 states and 107 transitions. [2020-10-14 04:49:50,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:49:50,770 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-10-14 04:49:50,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:49:50,771 INFO L225 Difference]: With dead ends: 101 [2020-10-14 04:49:50,771 INFO L226 Difference]: Without dead ends: 77 [2020-10-14 04:49:50,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:49:50,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-14 04:49:50,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 73. [2020-10-14 04:49:50,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-14 04:49:50,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-14 04:49:50,780 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 26 [2020-10-14 04:49:50,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:49:50,780 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-14 04:49:50,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 04:49:50,780 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-14 04:49:50,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 04:49:50,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:50,782 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] [2020-10-14 04:49:50,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 04:49:50,782 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:50,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:50,782 INFO L82 PathProgramCache]: Analyzing trace with hash 622688967, now seen corresponding path program 1 times [2020-10-14 04:49:50,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:50,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56390096] [2020-10-14 04:49:50,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:50,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:50,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:50,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:50,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:51,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:51,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:51,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:52,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:52,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 04:49:52,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 04:49:52,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1414 [2020-10-14 04:49:52,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:52,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:52,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 04:49:52,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:49:52,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 04:49:52,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:52,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:49:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:52,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:52,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:52,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:49:52,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:52,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:49:52,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:52,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:52,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:52,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:49:52,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:52,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:52,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:49:52,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56390096] [2020-10-14 04:49:52,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:49:52,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 04:49:52,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156534751] [2020-10-14 04:49:52,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:49:52,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:49:52,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:49:52,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:49:52,313 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 7 states. [2020-10-14 04:49:52,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:49:52,559 INFO L93 Difference]: Finished difference Result 79 states and 83 transitions. [2020-10-14 04:49:52,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 04:49:52,560 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-10-14 04:49:52,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:49:52,561 INFO L225 Difference]: With dead ends: 79 [2020-10-14 04:49:52,561 INFO L226 Difference]: Without dead ends: 58 [2020-10-14 04:49:52,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:49:52,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-14 04:49:52,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-10-14 04:49:52,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-14 04:49:52,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2020-10-14 04:49:52,570 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 28 [2020-10-14 04:49:52,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:49:52,572 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2020-10-14 04:49:52,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:49:52,572 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2020-10-14 04:49:52,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 04:49:52,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:52,576 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] [2020-10-14 04:49:52,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 04:49:52,576 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:52,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:52,577 INFO L82 PathProgramCache]: Analyzing trace with hash 993748211, now seen corresponding path program 1 times [2020-10-14 04:49:52,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:52,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760774338] [2020-10-14 04:49:52,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:52,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:52,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:52,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:52,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 04:49:52,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:52,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-14 04:49:52,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:52,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:52,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:49:52,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:49:52,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 04:49:52,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:52,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:49:52,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:52,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:52,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:52,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:49:52,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:52,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:49:52,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:52,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:52,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:52,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:49:52,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:52,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:52,962 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:49:52,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760774338] [2020-10-14 04:49:52,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:49:52,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 04:49:52,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059638853] [2020-10-14 04:49:52,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:49:52,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:49:52,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:49:52,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:49:52,966 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand 9 states. [2020-10-14 04:49:53,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:49:53,317 INFO L93 Difference]: Finished difference Result 68 states and 71 transitions. [2020-10-14 04:49:53,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:49:53,317 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-10-14 04:49:53,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:49:53,318 INFO L225 Difference]: With dead ends: 68 [2020-10-14 04:49:53,318 INFO L226 Difference]: Without dead ends: 66 [2020-10-14 04:49:53,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:49:53,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-14 04:49:53,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-10-14 04:49:53,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-14 04:49:53,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2020-10-14 04:49:53,328 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 30 [2020-10-14 04:49:53,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:49:53,330 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2020-10-14 04:49:53,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:49:53,330 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2020-10-14 04:49:53,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 04:49:53,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:53,332 INFO L422 BasicCegarLoop]: trace histogram [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 04:49:53,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 04:49:53,332 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:53,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:53,333 INFO L82 PathProgramCache]: Analyzing trace with hash -117947236, now seen corresponding path program 2 times [2020-10-14 04:49:53,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:53,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136022772] [2020-10-14 04:49:53,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:53,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:53,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:53,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:53,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 04:49:53,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:53,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 436 [2020-10-14 04:49:53,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:53,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:53,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:49:53,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:49:53,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 04:49:53,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:53,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:49:53,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:53,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:53,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:53,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:49:53,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:53,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:49:53,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:53,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:53,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:53,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:49:53,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:53,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:53,991 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:49:53,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136022772] [2020-10-14 04:49:53,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:49:53,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 04:49:53,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918996450] [2020-10-14 04:49:53,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:49:53,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:49:53,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:49:53,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:49:53,993 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand 9 states. [2020-10-14 04:49:54,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:49:54,550 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2020-10-14 04:49:54,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:49:54,550 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-10-14 04:49:54,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:49:54,551 INFO L225 Difference]: With dead ends: 89 [2020-10-14 04:49:54,551 INFO L226 Difference]: Without dead ends: 87 [2020-10-14 04:49:54,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:49:54,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-14 04:49:54,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 79. [2020-10-14 04:49:54,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-14 04:49:54,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2020-10-14 04:49:54,559 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 30 [2020-10-14 04:49:54,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:49:54,560 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2020-10-14 04:49:54,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:49:54,560 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2020-10-14 04:49:54,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 04:49:54,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:54,563 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:49:54,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 04:49:54,563 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:54,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:54,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1845129180, now seen corresponding path program 2 times [2020-10-14 04:49:54,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:54,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405323815] [2020-10-14 04:49:54,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:54,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:54,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:54,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:55,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:55,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 04:49:55,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:49:55,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1284 [2020-10-14 04:49:55,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:55,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:55,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 04:49:55,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:49:55,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 04:49:55,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:56,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:49:56,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:56,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:56,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:56,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:49:56,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:56,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:49:56,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:56,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:56,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:56,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:49:56,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:56,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:56,236 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:49:56,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405323815] [2020-10-14 04:49:56,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:49:56,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 04:49:56,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13474856] [2020-10-14 04:49:56,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 04:49:56,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:49:56,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 04:49:56,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 04:49:56,239 INFO L87 Difference]: Start difference. First operand 79 states and 84 transitions. Second operand 9 states. [2020-10-14 04:49:57,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:49:57,054 INFO L93 Difference]: Finished difference Result 99 states and 104 transitions. [2020-10-14 04:49:57,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:49:57,055 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-10-14 04:49:57,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:49:57,056 INFO L225 Difference]: With dead ends: 99 [2020-10-14 04:49:57,056 INFO L226 Difference]: Without dead ends: 83 [2020-10-14 04:49:57,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:49:57,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-14 04:49:57,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 77. [2020-10-14 04:49:57,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-14 04:49:57,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-14 04:49:57,064 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 34 [2020-10-14 04:49:57,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:49:57,064 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-14 04:49:57,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 04:49:57,064 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-14 04:49:57,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 04:49:57,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:57,065 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:49:57,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 04:49:57,065 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:57,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:57,066 INFO L82 PathProgramCache]: Analyzing trace with hash 733433733, now seen corresponding path program 3 times [2020-10-14 04:49:57,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:57,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100145294] [2020-10-14 04:49:57,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:57,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:57,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:57,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:57,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 04:49:57,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:57,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 535 [2020-10-14 04:49:57,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:57,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:57,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 04:49:57,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:49:57,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 04:49:57,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:57,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:49:57,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:57,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:57,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:57,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:49:57,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:57,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:49:57,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:57,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:57,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:57,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:49:57,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:57,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:49:57,973 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 04:49:57,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100145294] [2020-10-14 04:49:57,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:49:57,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 04:49:57,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859430335] [2020-10-14 04:49:57,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 04:49:57,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:49:57,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 04:49:57,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:49:57,977 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 10 states. [2020-10-14 04:49:58,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:49:58,602 INFO L93 Difference]: Finished difference Result 95 states and 100 transitions. [2020-10-14 04:49:58,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:49:58,603 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2020-10-14 04:49:58,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:49:58,604 INFO L225 Difference]: With dead ends: 95 [2020-10-14 04:49:58,604 INFO L226 Difference]: Without dead ends: 93 [2020-10-14 04:49:58,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:49:58,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-14 04:49:58,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 85. [2020-10-14 04:49:58,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-14 04:49:58,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 90 transitions. [2020-10-14 04:49:58,610 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 90 transitions. Word has length 34 [2020-10-14 04:49:58,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:49:58,611 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 90 transitions. [2020-10-14 04:49:58,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 04:49:58,611 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 90 transitions. [2020-10-14 04:49:58,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 04:49:58,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:58,612 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:49:58,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 04:49:58,612 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:58,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:58,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1280806396, now seen corresponding path program 1 times [2020-10-14 04:49:58,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:58,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [193872067] [2020-10-14 04:49:58,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:58,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:58,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:58,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:58,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:58,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:59,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:59,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 04:49:59,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 04:49:59,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 736 [2020-10-14 04:49:59,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:59,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:59,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:49:59,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 04:49:59,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 04:49:59,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:49:59,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:49:59,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:59,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:59,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:59,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:49:59,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:59,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:49:59,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:59,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:59,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:49:59,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:49:59,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:49:59,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:49:59,406 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 04:49:59,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [193872067] [2020-10-14 04:49:59,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:49:59,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 04:49:59,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465586979] [2020-10-14 04:49:59,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:49:59,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:49:59,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:49:59,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:49:59,408 INFO L87 Difference]: Start difference. First operand 85 states and 90 transitions. Second operand 6 states. [2020-10-14 04:49:59,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:49:59,528 INFO L93 Difference]: Finished difference Result 85 states and 90 transitions. [2020-10-14 04:49:59,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 04:49:59,529 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-10-14 04:49:59,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:49:59,530 INFO L225 Difference]: With dead ends: 85 [2020-10-14 04:49:59,530 INFO L226 Difference]: Without dead ends: 60 [2020-10-14 04:49:59,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:49:59,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-14 04:49:59,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-10-14 04:49:59,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-14 04:49:59,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2020-10-14 04:49:59,535 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 36 [2020-10-14 04:49:59,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:49:59,536 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2020-10-14 04:49:59,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:49:59,536 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2020-10-14 04:49:59,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 04:49:59,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:49:59,537 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:49:59,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 04:49:59,537 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:49:59,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:49:59,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1648105355, now seen corresponding path program 4 times [2020-10-14 04:49:59,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:49:59,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1434209887] [2020-10-14 04:49:59,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:49:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:49:59,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:49:59,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:49:59,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 04:49:59,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:49:59,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-10-14 04:49:59,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:49:59,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:49:59,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 04:49:59,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:49:59,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 04:49:59,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:00,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:00,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:00,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:00,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:00,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:00,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:00,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:00,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:00,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:00,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:00,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:00,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:00,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:00,080 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:00,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1434209887] [2020-10-14 04:50:00,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:00,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 04:50:00,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198702422] [2020-10-14 04:50:00,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 04:50:00,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:00,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 04:50:00,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:50:00,082 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand 10 states. [2020-10-14 04:50:00,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:00,531 INFO L93 Difference]: Finished difference Result 86 states and 90 transitions. [2020-10-14 04:50:00,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:50:00,531 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-10-14 04:50:00,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:00,532 INFO L225 Difference]: With dead ends: 86 [2020-10-14 04:50:00,533 INFO L226 Difference]: Without dead ends: 70 [2020-10-14 04:50:00,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:50:00,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-14 04:50:00,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2020-10-14 04:50:00,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-14 04:50:00,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2020-10-14 04:50:00,550 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 36 [2020-10-14 04:50:00,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:00,550 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2020-10-14 04:50:00,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 04:50:00,550 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2020-10-14 04:50:00,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 04:50:00,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:00,555 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:00,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 04:50:00,555 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:00,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:00,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1023943099, now seen corresponding path program 3 times [2020-10-14 04:50:00,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:00,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1625926267] [2020-10-14 04:50:00,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:00,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:00,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:00,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:02,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:02,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 04:50:02,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:50:02,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1626 [2020-10-14 04:50:02,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:02,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:02,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 04:50:02,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:02,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 04:50:02,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:02,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:02,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:02,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:02,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:02,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:02,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:02,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:02,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:02,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:02,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:02,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:02,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:02,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:50:02,547 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:02,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1625926267] [2020-10-14 04:50:02,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:02,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 04:50:02,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011152941] [2020-10-14 04:50:02,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 04:50:02,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:02,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 04:50:02,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-14 04:50:02,550 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand 10 states. [2020-10-14 04:50:03,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:03,157 INFO L93 Difference]: Finished difference Result 76 states and 78 transitions. [2020-10-14 04:50:03,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:50:03,158 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2020-10-14 04:50:03,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:03,159 INFO L225 Difference]: With dead ends: 76 [2020-10-14 04:50:03,159 INFO L226 Difference]: Without dead ends: 68 [2020-10-14 04:50:03,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:50:03,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-14 04:50:03,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2020-10-14 04:50:03,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-14 04:50:03,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 68 transitions. [2020-10-14 04:50:03,169 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 68 transitions. Word has length 38 [2020-10-14 04:50:03,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:03,169 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 68 transitions. [2020-10-14 04:50:03,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 04:50:03,169 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 68 transitions. [2020-10-14 04:50:03,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 04:50:03,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:03,170 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:03,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 04:50:03,170 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:03,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:03,171 INFO L82 PathProgramCache]: Analyzing trace with hash 439169867, now seen corresponding path program 4 times [2020-10-14 04:50:03,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:03,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [206841799] [2020-10-14 04:50:03,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:03,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:03,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:03,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:03,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 04:50:03,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:03,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 469 [2020-10-14 04:50:03,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:03,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:03,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 04:50:03,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:03,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 04:50:03,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:03,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:03,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:03,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:03,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:03,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:03,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:03,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:03,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:03,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:03,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:03,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:03,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:03,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:03,954 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:03,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [206841799] [2020-10-14 04:50:03,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:03,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 04:50:03,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711227134] [2020-10-14 04:50:03,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 04:50:03,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:03,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 04:50:03,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:50:03,958 INFO L87 Difference]: Start difference. First operand 66 states and 68 transitions. Second operand 11 states. [2020-10-14 04:50:04,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:04,472 INFO L93 Difference]: Finished difference Result 74 states and 75 transitions. [2020-10-14 04:50:04,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:50:04,472 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-10-14 04:50:04,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:04,473 INFO L225 Difference]: With dead ends: 74 [2020-10-14 04:50:04,473 INFO L226 Difference]: Without dead ends: 49 [2020-10-14 04:50:04,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:50:04,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-14 04:50:04,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-10-14 04:50:04,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-14 04:50:04,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2020-10-14 04:50:04,481 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 40 [2020-10-14 04:50:04,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:04,481 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2020-10-14 04:50:04,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 04:50:04,482 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2020-10-14 04:50:04,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 04:50:04,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:04,482 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:04,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 04:50:04,483 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:04,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:04,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1838649268, now seen corresponding path program 5 times [2020-10-14 04:50:04,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:04,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837558793] [2020-10-14 04:50:04,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:04,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:04,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:05,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:05,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 04:50:05,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:05,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 536 [2020-10-14 04:50:05,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:05,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:05,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 04:50:05,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:05,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 04:50:05,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:05,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:05,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:05,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:05,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:05,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:05,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:05,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:05,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:05,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:05,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:05,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:05,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:05,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:05,280 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:05,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837558793] [2020-10-14 04:50:05,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:05,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 04:50:05,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369032900] [2020-10-14 04:50:05,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 04:50:05,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:05,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 04:50:05,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:50:05,282 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand 11 states. [2020-10-14 04:50:05,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:05,832 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2020-10-14 04:50:05,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:50:05,833 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-10-14 04:50:05,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:05,834 INFO L225 Difference]: With dead ends: 63 [2020-10-14 04:50:05,834 INFO L226 Difference]: Without dead ends: 61 [2020-10-14 04:50:05,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:50:05,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-14 04:50:05,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2020-10-14 04:50:05,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-14 04:50:05,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2020-10-14 04:50:05,840 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 40 [2020-10-14 04:50:05,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:05,840 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2020-10-14 04:50:05,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 04:50:05,841 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2020-10-14 04:50:05,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 04:50:05,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:05,841 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:05,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 04:50:05,842 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:05,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:05,842 INFO L82 PathProgramCache]: Analyzing trace with hash -1655804172, now seen corresponding path program 5 times [2020-10-14 04:50:05,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:05,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171028142] [2020-10-14 04:50:05,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:05,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:05,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:06,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:07,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:07,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 04:50:07,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:50:07,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1940 [2020-10-14 04:50:07,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:07,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:07,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 04:50:07,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:07,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 04:50:07,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:08,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:08,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:08,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:08,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:08,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:08,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:08,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:08,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:08,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:08,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:08,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:08,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:08,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:08,190 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:08,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171028142] [2020-10-14 04:50:08,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:08,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 04:50:08,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247584616] [2020-10-14 04:50:08,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 04:50:08,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:08,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 04:50:08,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-14 04:50:08,192 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 11 states. [2020-10-14 04:50:08,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:08,801 INFO L93 Difference]: Finished difference Result 88 states and 91 transitions. [2020-10-14 04:50:08,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:50:08,804 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 44 [2020-10-14 04:50:08,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:08,804 INFO L225 Difference]: With dead ends: 88 [2020-10-14 04:50:08,805 INFO L226 Difference]: Without dead ends: 80 [2020-10-14 04:50:08,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:50:08,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-14 04:50:08,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 76. [2020-10-14 04:50:08,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-14 04:50:08,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2020-10-14 04:50:08,820 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 44 [2020-10-14 04:50:08,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:08,820 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2020-10-14 04:50:08,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 04:50:08,820 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2020-10-14 04:50:08,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 04:50:08,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:08,821 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:08,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 04:50:08,824 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:08,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:08,825 INFO L82 PathProgramCache]: Analyzing trace with hash 210546851, now seen corresponding path program 6 times [2020-10-14 04:50:08,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:08,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [64051201] [2020-10-14 04:50:08,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:08,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:08,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:09,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:09,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 04:50:09,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:09,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 740 [2020-10-14 04:50:09,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:09,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:09,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 04:50:09,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:09,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 04:50:09,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:09,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:09,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:09,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:09,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:09,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:09,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:09,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:09,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:09,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:09,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:09,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:09,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:09,896 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:09,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [64051201] [2020-10-14 04:50:09,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:09,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 04:50:09,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830243634] [2020-10-14 04:50:09,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 04:50:09,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:09,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 04:50:09,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:50:09,899 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand 12 states. [2020-10-14 04:50:10,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:10,444 INFO L93 Difference]: Finished difference Result 102 states and 106 transitions. [2020-10-14 04:50:10,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 04:50:10,444 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2020-10-14 04:50:10,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:10,446 INFO L225 Difference]: With dead ends: 102 [2020-10-14 04:50:10,446 INFO L226 Difference]: Without dead ends: 86 [2020-10-14 04:50:10,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:50:10,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-14 04:50:10,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 82. [2020-10-14 04:50:10,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-14 04:50:10,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 85 transitions. [2020-10-14 04:50:10,453 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 85 transitions. Word has length 46 [2020-10-14 04:50:10,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:10,454 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 85 transitions. [2020-10-14 04:50:10,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 04:50:10,454 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 85 transitions. [2020-10-14 04:50:10,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 04:50:10,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:10,461 INFO L422 BasicCegarLoop]: trace histogram [5, 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 04:50:10,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 04:50:10,461 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:10,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:10,461 INFO L82 PathProgramCache]: Analyzing trace with hash -257446371, now seen corresponding path program 6 times [2020-10-14 04:50:10,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:10,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740796732] [2020-10-14 04:50:10,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:10,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:10,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:10,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:13,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:13,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 04:50:13,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:50:13,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2767 [2020-10-14 04:50:13,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:13,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:13,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 04:50:13,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:13,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 04:50:13,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:13,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:13,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:13,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:13,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:13,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:13,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:13,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:13,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:13,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:13,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:13,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:13,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:13,635 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:13,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740796732] [2020-10-14 04:50:13,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:13,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 04:50:13,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035861805] [2020-10-14 04:50:13,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 04:50:13,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:13,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 04:50:13,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:50:13,638 INFO L87 Difference]: Start difference. First operand 82 states and 85 transitions. Second operand 12 states. [2020-10-14 04:50:14,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:14,180 INFO L93 Difference]: Finished difference Result 92 states and 94 transitions. [2020-10-14 04:50:14,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:50:14,181 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2020-10-14 04:50:14,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:14,182 INFO L225 Difference]: With dead ends: 92 [2020-10-14 04:50:14,182 INFO L226 Difference]: Without dead ends: 84 [2020-10-14 04:50:14,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:50:14,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-14 04:50:14,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2020-10-14 04:50:14,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-14 04:50:14,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 84 transitions. [2020-10-14 04:50:14,190 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 84 transitions. Word has length 48 [2020-10-14 04:50:14,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:14,191 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 84 transitions. [2020-10-14 04:50:14,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 04:50:14,191 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 84 transitions. [2020-10-14 04:50:14,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 04:50:14,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:14,192 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:14,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 04:50:14,192 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:14,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:14,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1982103453, now seen corresponding path program 7 times [2020-10-14 04:50:14,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:14,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234208120] [2020-10-14 04:50:14,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:14,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:14,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:14,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:14,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 04:50:14,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:14,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 577 [2020-10-14 04:50:14,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:14,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:14,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 04:50:14,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:14,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 04:50:14,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:15,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:15,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:15,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:15,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:15,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:15,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:15,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:15,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:15,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:15,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:15,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:15,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:15,085 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:15,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234208120] [2020-10-14 04:50:15,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:15,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:50:15,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180910592] [2020-10-14 04:50:15,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:50:15,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:15,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:50:15,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:50:15,087 INFO L87 Difference]: Start difference. First operand 82 states and 84 transitions. Second operand 13 states. [2020-10-14 04:50:15,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:15,670 INFO L93 Difference]: Finished difference Result 90 states and 91 transitions. [2020-10-14 04:50:15,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 04:50:15,671 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 50 [2020-10-14 04:50:15,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:15,672 INFO L225 Difference]: With dead ends: 90 [2020-10-14 04:50:15,672 INFO L226 Difference]: Without dead ends: 59 [2020-10-14 04:50:15,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:50:15,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-14 04:50:15,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-14 04:50:15,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-14 04:50:15,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2020-10-14 04:50:15,683 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 50 [2020-10-14 04:50:15,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:15,684 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2020-10-14 04:50:15,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:50:15,684 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2020-10-14 04:50:15,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 04:50:15,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:15,686 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:15,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 04:50:15,686 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:15,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:15,687 INFO L82 PathProgramCache]: Analyzing trace with hash -292370036, now seen corresponding path program 7 times [2020-10-14 04:50:15,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:15,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635259411] [2020-10-14 04:50:15,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:15,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:15,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:16,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:16,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 04:50:16,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:16,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 770 [2020-10-14 04:50:16,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:16,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:16,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 04:50:16,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:16,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 04:50:16,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:16,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:16,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:16,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:16,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:16,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:16,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:16,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:16,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:16,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:16,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:16,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:16,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:16,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:17,038 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:17,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635259411] [2020-10-14 04:50:17,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:17,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:50:17,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001266106] [2020-10-14 04:50:17,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:50:17,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:17,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:50:17,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:50:17,040 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 13 states. [2020-10-14 04:50:18,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:18,106 INFO L93 Difference]: Finished difference Result 96 states and 99 transitions. [2020-10-14 04:50:18,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 04:50:18,106 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 50 [2020-10-14 04:50:18,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:18,108 INFO L225 Difference]: With dead ends: 96 [2020-10-14 04:50:18,108 INFO L226 Difference]: Without dead ends: 94 [2020-10-14 04:50:18,109 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2020-10-14 04:50:18,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-14 04:50:18,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 86. [2020-10-14 04:50:18,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-14 04:50:18,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 89 transitions. [2020-10-14 04:50:18,117 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 89 transitions. Word has length 50 [2020-10-14 04:50:18,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:18,117 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 89 transitions. [2020-10-14 04:50:18,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:50:18,117 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 89 transitions. [2020-10-14 04:50:18,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 04:50:18,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:18,118 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:18,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 04:50:18,118 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:18,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:18,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1474886860, now seen corresponding path program 8 times [2020-10-14 04:50:18,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:18,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316078770] [2020-10-14 04:50:18,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:18,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:18,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:20,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:20,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 04:50:20,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:50:20,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1989 [2020-10-14 04:50:20,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:20,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:20,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 04:50:20,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:20,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 04:50:20,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:20,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:20,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:20,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:20,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:20,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:20,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:20,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:20,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:20,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:20,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:20,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:20,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:20,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:20,697 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:20,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1316078770] [2020-10-14 04:50:20,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:20,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 04:50:20,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626222304] [2020-10-14 04:50:20,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 04:50:20,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:20,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 04:50:20,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:50:20,699 INFO L87 Difference]: Start difference. First operand 86 states and 89 transitions. Second operand 13 states. [2020-10-14 04:50:21,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:21,782 INFO L93 Difference]: Finished difference Result 98 states and 100 transitions. [2020-10-14 04:50:21,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 04:50:21,782 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 54 [2020-10-14 04:50:21,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:21,784 INFO L225 Difference]: With dead ends: 98 [2020-10-14 04:50:21,784 INFO L226 Difference]: Without dead ends: 90 [2020-10-14 04:50:21,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2020-10-14 04:50:21,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-14 04:50:21,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 72. [2020-10-14 04:50:21,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-14 04:50:21,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions. [2020-10-14 04:50:21,791 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 54 [2020-10-14 04:50:21,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:21,792 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions. [2020-10-14 04:50:21,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 04:50:21,792 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions. [2020-10-14 04:50:21,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 04:50:21,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:21,793 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:21,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 04:50:21,793 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:21,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:21,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1130347019, now seen corresponding path program 8 times [2020-10-14 04:50:21,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:21,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403238365] [2020-10-14 04:50:21,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:21,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:21,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:23,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:23,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 04:50:23,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:23,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1130 [2020-10-14 04:50:23,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:23,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:23,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 04:50:23,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:23,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 04:50:23,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:23,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:23,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:23,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:23,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:23,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:23,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:23,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:23,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:23,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:23,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:23,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:23,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:23,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:23,467 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:23,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1403238365] [2020-10-14 04:50:23,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:23,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 04:50:23,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368019031] [2020-10-14 04:50:23,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 04:50:23,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:23,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 04:50:23,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:50:23,469 INFO L87 Difference]: Start difference. First operand 72 states and 74 transitions. Second operand 14 states. [2020-10-14 04:50:24,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:24,398 INFO L93 Difference]: Finished difference Result 102 states and 105 transitions. [2020-10-14 04:50:24,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 04:50:24,399 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-10-14 04:50:24,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:24,400 INFO L225 Difference]: With dead ends: 102 [2020-10-14 04:50:24,400 INFO L226 Difference]: Without dead ends: 100 [2020-10-14 04:50:24,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2020-10-14 04:50:24,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-14 04:50:24,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 92. [2020-10-14 04:50:24,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-14 04:50:24,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 95 transitions. [2020-10-14 04:50:24,410 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 95 transitions. Word has length 54 [2020-10-14 04:50:24,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:24,411 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 95 transitions. [2020-10-14 04:50:24,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 04:50:24,411 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 95 transitions. [2020-10-14 04:50:24,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 04:50:24,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:24,414 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:24,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 04:50:24,414 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:24,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:24,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1967445893, now seen corresponding path program 9 times [2020-10-14 04:50:24,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:24,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647786691] [2020-10-14 04:50:24,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:24,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:24,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:25,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:25,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 04:50:25,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:25,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-10-14 04:50:25,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:25,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:25,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 04:50:25,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:25,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 04:50:25,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:50:26,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:26,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:26,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:26,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:26,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:26,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:26,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:26,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:26,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:26,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:26,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:26,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:26,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:26,160 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 8 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:26,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647786691] [2020-10-14 04:50:26,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:26,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 04:50:26,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619551480] [2020-10-14 04:50:26,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 04:50:26,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:26,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 04:50:26,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:50:26,162 INFO L87 Difference]: Start difference. First operand 92 states and 95 transitions. Second operand 14 states. [2020-10-14 04:50:27,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:27,033 INFO L93 Difference]: Finished difference Result 118 states and 122 transitions. [2020-10-14 04:50:27,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 04:50:27,034 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 56 [2020-10-14 04:50:27,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:27,034 INFO L225 Difference]: With dead ends: 118 [2020-10-14 04:50:27,034 INFO L226 Difference]: Without dead ends: 102 [2020-10-14 04:50:27,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:50:27,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-14 04:50:27,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 98. [2020-10-14 04:50:27,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-14 04:50:27,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 101 transitions. [2020-10-14 04:50:27,046 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 101 transitions. Word has length 56 [2020-10-14 04:50:27,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:27,046 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 101 transitions. [2020-10-14 04:50:27,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 04:50:27,046 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 101 transitions. [2020-10-14 04:50:27,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 04:50:27,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:27,047 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:27,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 04:50:27,047 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:27,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:27,048 INFO L82 PathProgramCache]: Analyzing trace with hash 815799477, now seen corresponding path program 9 times [2020-10-14 04:50:27,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:27,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010469529] [2020-10-14 04:50:27,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:27,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:27,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:28,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:29,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:29,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 04:50:29,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:50:29,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2792 [2020-10-14 04:50:29,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:29,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:29,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 04:50:29,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:29,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 04:50:29,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:30,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:30,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:30,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:30,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:30,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:30,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:30,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:30,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:30,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:30,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:30,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:30,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:30,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:30,553 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:30,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010469529] [2020-10-14 04:50:30,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:30,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 04:50:30,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331471389] [2020-10-14 04:50:30,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 04:50:30,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:30,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 04:50:30,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-14 04:50:30,556 INFO L87 Difference]: Start difference. First operand 98 states and 101 transitions. Second operand 14 states. [2020-10-14 04:50:31,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:31,544 INFO L93 Difference]: Finished difference Result 108 states and 110 transitions. [2020-10-14 04:50:31,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 04:50:31,545 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 58 [2020-10-14 04:50:31,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:31,547 INFO L225 Difference]: With dead ends: 108 [2020-10-14 04:50:31,548 INFO L226 Difference]: Without dead ends: 100 [2020-10-14 04:50:31,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2020-10-14 04:50:31,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-14 04:50:31,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2020-10-14 04:50:31,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-14 04:50:31,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 100 transitions. [2020-10-14 04:50:31,557 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 100 transitions. Word has length 58 [2020-10-14 04:50:31,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:31,558 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 100 transitions. [2020-10-14 04:50:31,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 04:50:31,558 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 100 transitions. [2020-10-14 04:50:31,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 04:50:31,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:31,559 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:31,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 04:50:31,559 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:31,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:31,559 INFO L82 PathProgramCache]: Analyzing trace with hash -640005061, now seen corresponding path program 10 times [2020-10-14 04:50:31,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:31,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562829371] [2020-10-14 04:50:31,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:31,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:31,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:32,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:32,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 04:50:32,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:32,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-10-14 04:50:32,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:32,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:32,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 04:50:32,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:32,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 04:50:32,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:33,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:33,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:33,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:33,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:33,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:33,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:33,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:33,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:33,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:33,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:33,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:33,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:33,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:33,109 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:33,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562829371] [2020-10-14 04:50:33,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:33,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 04:50:33,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509932287] [2020-10-14 04:50:33,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 04:50:33,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:33,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 04:50:33,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:50:33,111 INFO L87 Difference]: Start difference. First operand 98 states and 100 transitions. Second operand 15 states. [2020-10-14 04:50:34,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:34,016 INFO L93 Difference]: Finished difference Result 106 states and 107 transitions. [2020-10-14 04:50:34,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 04:50:34,017 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 60 [2020-10-14 04:50:34,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:34,018 INFO L225 Difference]: With dead ends: 106 [2020-10-14 04:50:34,018 INFO L226 Difference]: Without dead ends: 69 [2020-10-14 04:50:34,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:50:34,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-14 04:50:34,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-10-14 04:50:34,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-14 04:50:34,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2020-10-14 04:50:34,026 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 60 [2020-10-14 04:50:34,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:34,027 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2020-10-14 04:50:34,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 04:50:34,027 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2020-10-14 04:50:34,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 04:50:34,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:34,028 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:34,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 04:50:34,028 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:34,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:34,028 INFO L82 PathProgramCache]: Analyzing trace with hash 304738852, now seen corresponding path program 10 times [2020-10-14 04:50:34,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:34,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823999772] [2020-10-14 04:50:34,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:34,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:34,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:35,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:35,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 04:50:35,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:35,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1289 [2020-10-14 04:50:35,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:35,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:35,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 04:50:35,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:35,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 04:50:35,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:35,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:35,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:35,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:35,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:35,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:35,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:35,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:35,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:35,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:35,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:35,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:35,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:35,981 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:35,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823999772] [2020-10-14 04:50:35,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:35,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 04:50:35,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003523721] [2020-10-14 04:50:35,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 04:50:35,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:35,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 04:50:35,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:50:35,982 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand 15 states. [2020-10-14 04:50:37,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:37,200 INFO L93 Difference]: Finished difference Result 83 states and 85 transitions. [2020-10-14 04:50:37,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 04:50:37,201 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 60 [2020-10-14 04:50:37,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:37,202 INFO L225 Difference]: With dead ends: 83 [2020-10-14 04:50:37,202 INFO L226 Difference]: Without dead ends: 81 [2020-10-14 04:50:37,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2020-10-14 04:50:37,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-14 04:50:37,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 75. [2020-10-14 04:50:37,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-14 04:50:37,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2020-10-14 04:50:37,211 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 60 [2020-10-14 04:50:37,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:37,211 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2020-10-14 04:50:37,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 04:50:37,211 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2020-10-14 04:50:37,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 04:50:37,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:37,212 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:37,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 04:50:37,212 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:37,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:37,213 INFO L82 PathProgramCache]: Analyzing trace with hash 336206180, now seen corresponding path program 11 times [2020-10-14 04:50:37,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:37,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1389258427] [2020-10-14 04:50:37,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:37,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:38,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:40,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:40,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 04:50:40,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:50:40,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3013 [2020-10-14 04:50:40,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:40,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:40,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 04:50:40,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:40,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 04:50:40,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:50:40,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:40,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:40,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:40,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:40,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:40,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:40,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:40,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:40,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:40,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:40,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:40,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:40,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:40,940 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:40,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1389258427] [2020-10-14 04:50:40,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:40,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 04:50:40,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883951370] [2020-10-14 04:50:40,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 04:50:40,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:40,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 04:50:40,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-10-14 04:50:40,942 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand 15 states. [2020-10-14 04:50:42,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:42,178 INFO L93 Difference]: Finished difference Result 120 states and 123 transitions. [2020-10-14 04:50:42,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 04:50:42,179 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 64 [2020-10-14 04:50:42,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:42,181 INFO L225 Difference]: With dead ends: 120 [2020-10-14 04:50:42,181 INFO L226 Difference]: Without dead ends: 112 [2020-10-14 04:50:42,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2020-10-14 04:50:42,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-14 04:50:42,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 108. [2020-10-14 04:50:42,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-14 04:50:42,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 111 transitions. [2020-10-14 04:50:42,191 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 111 transitions. Word has length 64 [2020-10-14 04:50:42,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:42,191 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 111 transitions. [2020-10-14 04:50:42,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 04:50:42,191 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 111 transitions. [2020-10-14 04:50:42,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 04:50:42,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:42,192 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:42,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 04:50:42,192 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:42,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:42,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1022918893, now seen corresponding path program 11 times [2020-10-14 04:50:42,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:42,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953554107] [2020-10-14 04:50:42,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:42,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:42,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:43,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:43,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:50:43,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:43,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1442 [2020-10-14 04:50:43,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:43,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:43,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 04:50:43,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:43,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 04:50:43,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:44,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:44,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:44,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:44,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:44,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:44,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:44,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:44,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:44,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:44,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:44,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:44,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:44,204 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 10 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:44,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953554107] [2020-10-14 04:50:44,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:44,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 04:50:44,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844932593] [2020-10-14 04:50:44,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 04:50:44,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:44,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 04:50:44,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:50:44,206 INFO L87 Difference]: Start difference. First operand 108 states and 111 transitions. Second operand 16 states. [2020-10-14 04:50:45,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:45,291 INFO L93 Difference]: Finished difference Result 134 states and 138 transitions. [2020-10-14 04:50:45,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 04:50:45,292 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 66 [2020-10-14 04:50:45,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:45,293 INFO L225 Difference]: With dead ends: 134 [2020-10-14 04:50:45,294 INFO L226 Difference]: Without dead ends: 118 [2020-10-14 04:50:45,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:50:45,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-14 04:50:45,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 114. [2020-10-14 04:50:45,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-14 04:50:45,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 117 transitions. [2020-10-14 04:50:45,302 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 117 transitions. Word has length 66 [2020-10-14 04:50:45,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:45,302 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 117 transitions. [2020-10-14 04:50:45,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 04:50:45,302 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 117 transitions. [2020-10-14 04:50:45,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 04:50:45,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:45,303 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:45,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 04:50:45,303 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:45,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:45,304 INFO L82 PathProgramCache]: Analyzing trace with hash -372430323, now seen corresponding path program 12 times [2020-10-14 04:50:45,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:45,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884741695] [2020-10-14 04:50:45,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:45,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:45,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:46,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:48,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:48,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:50:48,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:50:48,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3123 [2020-10-14 04:50:48,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:48,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:48,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 04:50:48,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:48,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 04:50:48,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:49,159 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 63 [2020-10-14 04:50:49,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:49,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:49,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:49,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:49,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:49,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:49,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:50:49,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:49,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:49,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:49,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:49,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:49,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:49,541 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:49,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884741695] [2020-10-14 04:50:49,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:49,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 04:50:49,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413763984] [2020-10-14 04:50:49,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 04:50:49,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:49,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 04:50:49,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-14 04:50:49,543 INFO L87 Difference]: Start difference. First operand 114 states and 117 transitions. Second operand 16 states. [2020-10-14 04:50:50,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:50,805 INFO L93 Difference]: Finished difference Result 124 states and 126 transitions. [2020-10-14 04:50:50,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 04:50:50,806 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 68 [2020-10-14 04:50:50,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:50,807 INFO L225 Difference]: With dead ends: 124 [2020-10-14 04:50:50,807 INFO L226 Difference]: Without dead ends: 116 [2020-10-14 04:50:50,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2020-10-14 04:50:50,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-14 04:50:50,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 114. [2020-10-14 04:50:50,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-14 04:50:50,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 116 transitions. [2020-10-14 04:50:50,816 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 116 transitions. Word has length 68 [2020-10-14 04:50:50,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:50,816 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 116 transitions. [2020-10-14 04:50:50,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 04:50:50,816 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 116 transitions. [2020-10-14 04:50:50,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 04:50:50,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:50,817 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:50,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 04:50:50,817 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:50,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:50,818 INFO L82 PathProgramCache]: Analyzing trace with hash -798386477, now seen corresponding path program 13 times [2020-10-14 04:50:50,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:50,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478698479] [2020-10-14 04:50:50,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:50,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:52,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:52,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 04:50:52,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:52,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1357 [2020-10-14 04:50:52,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:52,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:52,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 04:50:52,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:52,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 04:50:52,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:52,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:52,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:52,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:52,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:52,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:52,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:52,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:52,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:52,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:52,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:52,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:52,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:52,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:52,883 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:52,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478698479] [2020-10-14 04:50:52,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:52,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 04:50:52,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030629567] [2020-10-14 04:50:52,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 04:50:52,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:52,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 04:50:52,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:50:52,885 INFO L87 Difference]: Start difference. First operand 114 states and 116 transitions. Second operand 17 states. [2020-10-14 04:50:54,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:54,056 INFO L93 Difference]: Finished difference Result 122 states and 123 transitions. [2020-10-14 04:50:54,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 04:50:54,057 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 70 [2020-10-14 04:50:54,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:54,058 INFO L225 Difference]: With dead ends: 122 [2020-10-14 04:50:54,059 INFO L226 Difference]: Without dead ends: 79 [2020-10-14 04:50:54,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-10-14 04:50:54,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-14 04:50:54,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-10-14 04:50:54,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-14 04:50:54,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2020-10-14 04:50:54,067 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 70 [2020-10-14 04:50:54,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:54,067 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2020-10-14 04:50:54,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 04:50:54,068 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2020-10-14 04:50:54,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 04:50:54,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:54,069 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:54,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 04:50:54,069 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:54,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:54,069 INFO L82 PathProgramCache]: Analyzing trace with hash 877201788, now seen corresponding path program 12 times [2020-10-14 04:50:54,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:54,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370182867] [2020-10-14 04:50:54,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:54,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:54,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:55,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:55,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 04:50:55,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:55,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1685 [2020-10-14 04:50:55,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:55,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:55,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 04:50:55,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:50:55,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 04:50:55,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:56,502 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-10-14 04:50:56,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:50:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:56,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:50:56,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:50:56,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:50:56,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:50:56,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:50:56,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:50:56,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:50:56,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:50:56,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:50:56,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:50:56,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:50:56,984 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 152 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:50:56,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370182867] [2020-10-14 04:50:56,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:50:56,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 04:50:56,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678512087] [2020-10-14 04:50:56,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 04:50:56,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:50:56,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 04:50:56,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:50:56,993 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand 17 states. [2020-10-14 04:50:58,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:50:58,718 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2020-10-14 04:50:58,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 04:50:58,719 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 70 [2020-10-14 04:50:58,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:50:58,720 INFO L225 Difference]: With dead ends: 93 [2020-10-14 04:50:58,720 INFO L226 Difference]: Without dead ends: 91 [2020-10-14 04:50:58,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=60, Invalid=492, Unknown=0, NotChecked=0, Total=552 [2020-10-14 04:50:58,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-14 04:50:58,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 85. [2020-10-14 04:50:58,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-14 04:50:58,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 87 transitions. [2020-10-14 04:50:58,727 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 87 transitions. Word has length 70 [2020-10-14 04:50:58,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:50:58,728 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 87 transitions. [2020-10-14 04:50:58,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 04:50:58,728 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 87 transitions. [2020-10-14 04:50:58,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-14 04:50:58,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:50:58,729 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:50:58,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 04:50:58,729 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:50:58,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:50:58,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1469957308, now seen corresponding path program 14 times [2020-10-14 04:50:58,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:50:58,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77705625] [2020-10-14 04:50:58,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:50:58,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:50:58,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:00,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:02,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:02,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 04:51:02,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:51:02,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4068 [2020-10-14 04:51:02,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:02,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:02,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 04:51:02,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:02,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 04:51:02,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:03,376 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-10-14 04:51:03,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:03,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:03,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:03,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:03,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:03,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:03,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:03,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:03,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:03,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:03,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:03,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:03,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:03,893 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:03,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [77705625] [2020-10-14 04:51:03,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:03,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 04:51:03,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117706394] [2020-10-14 04:51:03,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 04:51:03,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:03,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 04:51:03,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:51:03,894 INFO L87 Difference]: Start difference. First operand 85 states and 87 transitions. Second operand 17 states. [2020-10-14 04:51:05,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:05,518 INFO L93 Difference]: Finished difference Result 136 states and 139 transitions. [2020-10-14 04:51:05,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 04:51:05,519 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 74 [2020-10-14 04:51:05,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:05,520 INFO L225 Difference]: With dead ends: 136 [2020-10-14 04:51:05,520 INFO L226 Difference]: Without dead ends: 128 [2020-10-14 04:51:05,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=60, Invalid=492, Unknown=0, NotChecked=0, Total=552 [2020-10-14 04:51:05,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-14 04:51:05,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 124. [2020-10-14 04:51:05,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-14 04:51:05,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 127 transitions. [2020-10-14 04:51:05,531 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 127 transitions. Word has length 74 [2020-10-14 04:51:05,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:05,531 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 127 transitions. [2020-10-14 04:51:05,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 04:51:05,532 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 127 transitions. [2020-10-14 04:51:05,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-14 04:51:05,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:05,533 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:05,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 04:51:05,533 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:05,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:05,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1885189227, now seen corresponding path program 13 times [2020-10-14 04:51:05,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:05,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690883935] [2020-10-14 04:51:05,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:05,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:05,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:07,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:07,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 04:51:07,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:07,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2012 [2020-10-14 04:51:07,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:07,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:07,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 04:51:07,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:07,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 04:51:07,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:08,223 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2020-10-14 04:51:08,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:08,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:08,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:08,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:08,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:08,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:08,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:08,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:08,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:08,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:08,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:08,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:08,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:51:08,595 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 12 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:08,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690883935] [2020-10-14 04:51:08,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:08,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 04:51:08,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314400511] [2020-10-14 04:51:08,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 04:51:08,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:08,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 04:51:08,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-14 04:51:08,597 INFO L87 Difference]: Start difference. First operand 124 states and 127 transitions. Second operand 18 states. [2020-10-14 04:51:10,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:10,184 INFO L93 Difference]: Finished difference Result 150 states and 154 transitions. [2020-10-14 04:51:10,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 04:51:10,185 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 76 [2020-10-14 04:51:10,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:10,186 INFO L225 Difference]: With dead ends: 150 [2020-10-14 04:51:10,187 INFO L226 Difference]: Without dead ends: 134 [2020-10-14 04:51:10,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2020-10-14 04:51:10,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-14 04:51:10,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 130. [2020-10-14 04:51:10,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-14 04:51:10,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 133 transitions. [2020-10-14 04:51:10,199 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 133 transitions. Word has length 76 [2020-10-14 04:51:10,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:10,199 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 133 transitions. [2020-10-14 04:51:10,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 04:51:10,200 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 133 transitions. [2020-10-14 04:51:10,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-14 04:51:10,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:10,201 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:10,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 04:51:10,201 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:10,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:10,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1413032411, now seen corresponding path program 15 times [2020-10-14 04:51:10,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:10,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495191702] [2020-10-14 04:51:10,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:10,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:10,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:12,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:13,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:13,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 04:51:13,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:51:13,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3530 [2020-10-14 04:51:13,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:13,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:13,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 04:51:13,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:13,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 04:51:13,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:14,276 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2020-10-14 04:51:14,447 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 70 [2020-10-14 04:51:14,594 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2020-10-14 04:51:14,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:14,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:14,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:14,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:14,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:14,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:14,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:14,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:14,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:14,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:14,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:14,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:14,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:14,958 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 04:51:14,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495191702] [2020-10-14 04:51:14,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:14,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 04:51:14,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738170802] [2020-10-14 04:51:14,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 04:51:14,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:14,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 04:51:14,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-10-14 04:51:14,959 INFO L87 Difference]: Start difference. First operand 130 states and 133 transitions. Second operand 17 states. [2020-10-14 04:51:16,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:16,649 INFO L93 Difference]: Finished difference Result 140 states and 142 transitions. [2020-10-14 04:51:16,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 04:51:16,654 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 78 [2020-10-14 04:51:16,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:16,655 INFO L225 Difference]: With dead ends: 140 [2020-10-14 04:51:16,656 INFO L226 Difference]: Without dead ends: 132 [2020-10-14 04:51:16,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=60, Invalid=492, Unknown=0, NotChecked=0, Total=552 [2020-10-14 04:51:16,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-14 04:51:16,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2020-10-14 04:51:16,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-14 04:51:16,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 132 transitions. [2020-10-14 04:51:16,666 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 132 transitions. Word has length 78 [2020-10-14 04:51:16,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:16,667 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 132 transitions. [2020-10-14 04:51:16,667 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 04:51:16,667 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 132 transitions. [2020-10-14 04:51:16,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 04:51:16,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:16,668 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:16,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 04:51:16,668 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:16,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:16,668 INFO L82 PathProgramCache]: Analyzing trace with hash -764059605, now seen corresponding path program 16 times [2020-10-14 04:51:16,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:16,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814070459] [2020-10-14 04:51:16,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:16,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:16,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:19,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:19,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 04:51:19,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:19,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2548 [2020-10-14 04:51:19,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:19,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:19,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 04:51:19,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:19,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 04:51:19,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:20,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:20,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:20,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:20,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:20,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:20,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:20,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:20,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:20,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:20,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:20,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:20,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:20,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:20,231 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:20,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814070459] [2020-10-14 04:51:20,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:20,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 04:51:20,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106023440] [2020-10-14 04:51:20,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 04:51:20,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:20,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 04:51:20,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-14 04:51:20,233 INFO L87 Difference]: Start difference. First operand 130 states and 132 transitions. Second operand 19 states. [2020-10-14 04:51:21,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:21,799 INFO L93 Difference]: Finished difference Result 138 states and 139 transitions. [2020-10-14 04:51:21,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 04:51:21,800 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 80 [2020-10-14 04:51:21,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:21,801 INFO L225 Difference]: With dead ends: 138 [2020-10-14 04:51:21,801 INFO L226 Difference]: Without dead ends: 89 [2020-10-14 04:51:21,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2020-10-14 04:51:21,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-14 04:51:21,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2020-10-14 04:51:21,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-14 04:51:21,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2020-10-14 04:51:21,809 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 80 [2020-10-14 04:51:21,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:21,810 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2020-10-14 04:51:21,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 04:51:21,810 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2020-10-14 04:51:21,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-14 04:51:21,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:21,810 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:21,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 04:51:21,811 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:21,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:21,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1585975188, now seen corresponding path program 14 times [2020-10-14 04:51:21,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:21,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147090633] [2020-10-14 04:51:21,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:21,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:22,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:24,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:24,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 04:51:24,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:24,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2580 [2020-10-14 04:51:24,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:24,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:24,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 04:51:24,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:24,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 04:51:24,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:25,026 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2020-10-14 04:51:25,219 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2020-10-14 04:51:25,397 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 78 [2020-10-14 04:51:25,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:25,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:25,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:25,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:25,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:25,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:25,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:25,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:25,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:25,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:25,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:25,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:25,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:25,817 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:25,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1147090633] [2020-10-14 04:51:25,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:25,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 04:51:25,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203067675] [2020-10-14 04:51:25,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 04:51:25,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:25,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 04:51:25,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2020-10-14 04:51:25,819 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand 19 states. [2020-10-14 04:51:28,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:28,130 INFO L93 Difference]: Finished difference Result 103 states and 105 transitions. [2020-10-14 04:51:28,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 04:51:28,131 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 80 [2020-10-14 04:51:28,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:28,132 INFO L225 Difference]: With dead ends: 103 [2020-10-14 04:51:28,133 INFO L226 Difference]: Without dead ends: 101 [2020-10-14 04:51:28,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2020-10-14 04:51:28,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-14 04:51:28,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 95. [2020-10-14 04:51:28,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-14 04:51:28,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 97 transitions. [2020-10-14 04:51:28,142 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 97 transitions. Word has length 80 [2020-10-14 04:51:28,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:28,142 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 97 transitions. [2020-10-14 04:51:28,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 04:51:28,143 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 97 transitions. [2020-10-14 04:51:28,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-14 04:51:28,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:28,144 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:28,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 04:51:28,144 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:28,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:28,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1606680876, now seen corresponding path program 17 times [2020-10-14 04:51:28,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:28,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999115803] [2020-10-14 04:51:28,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:28,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:28,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:30,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:33,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:33,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 04:51:33,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:51:33,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 04:51:33,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:33,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:33,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 04:51:33,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:33,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 04:51:33,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:33,661 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2020-10-14 04:51:33,844 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2020-10-14 04:51:33,998 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2020-10-14 04:51:34,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:34,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:34,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:34,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:34,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:34,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:34,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:34,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:34,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:34,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:34,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:34,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:34,498 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:34,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999115803] [2020-10-14 04:51:34,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:34,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 04:51:34,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928351981] [2020-10-14 04:51:34,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 04:51:34,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:34,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 04:51:34,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2020-10-14 04:51:34,500 INFO L87 Difference]: Start difference. First operand 95 states and 97 transitions. Second operand 19 states. [2020-10-14 04:51:36,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:36,779 INFO L93 Difference]: Finished difference Result 152 states and 155 transitions. [2020-10-14 04:51:36,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 04:51:36,779 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 84 [2020-10-14 04:51:36,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:36,781 INFO L225 Difference]: With dead ends: 152 [2020-10-14 04:51:36,781 INFO L226 Difference]: Without dead ends: 144 [2020-10-14 04:51:36,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2020-10-14 04:51:36,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-14 04:51:36,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 140. [2020-10-14 04:51:36,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-14 04:51:36,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 143 transitions. [2020-10-14 04:51:36,793 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 143 transitions. Word has length 84 [2020-10-14 04:51:36,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:36,793 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 143 transitions. [2020-10-14 04:51:36,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 04:51:36,793 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 143 transitions. [2020-10-14 04:51:36,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-14 04:51:36,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:36,794 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:36,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 04:51:36,795 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:36,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:36,795 INFO L82 PathProgramCache]: Analyzing trace with hash 173394051, now seen corresponding path program 15 times [2020-10-14 04:51:36,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:36,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968092234] [2020-10-14 04:51:36,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:36,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:37,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:39,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:39,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 04:51:39,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:39,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2649 [2020-10-14 04:51:39,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:39,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:39,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 04:51:39,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:39,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 04:51:39,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:40,087 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-10-14 04:51:40,393 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2020-10-14 04:51:40,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:40,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:40,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:40,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:40,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:40,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:40,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:40,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:40,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:40,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:40,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:40,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:40,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:40,828 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 14 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:40,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1968092234] [2020-10-14 04:51:40,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:40,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 04:51:40,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177796383] [2020-10-14 04:51:40,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 04:51:40,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:40,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 04:51:40,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-10-14 04:51:40,830 INFO L87 Difference]: Start difference. First operand 140 states and 143 transitions. Second operand 20 states. [2020-10-14 04:51:42,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:42,757 INFO L93 Difference]: Finished difference Result 166 states and 170 transitions. [2020-10-14 04:51:42,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 04:51:42,758 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 86 [2020-10-14 04:51:42,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:42,760 INFO L225 Difference]: With dead ends: 166 [2020-10-14 04:51:42,760 INFO L226 Difference]: Without dead ends: 150 [2020-10-14 04:51:42,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2020-10-14 04:51:42,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-14 04:51:42,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 146. [2020-10-14 04:51:42,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-14 04:51:42,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 149 transitions. [2020-10-14 04:51:42,771 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 149 transitions. Word has length 86 [2020-10-14 04:51:42,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:42,771 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 149 transitions. [2020-10-14 04:51:42,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 04:51:42,772 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 149 transitions. [2020-10-14 04:51:42,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-14 04:51:42,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:42,772 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:42,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-14 04:51:42,773 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:42,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:42,773 INFO L82 PathProgramCache]: Analyzing trace with hash -690937603, now seen corresponding path program 18 times [2020-10-14 04:51:42,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:42,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1551617924] [2020-10-14 04:51:42,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:42,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:43,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:46,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:48,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:48,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 04:51:48,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:51:48,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-14 04:51:48,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:48,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:48,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 04:51:48,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:48,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 04:51:48,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:48,581 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-10-14 04:51:48,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:48,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:48,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:48,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:48,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:48,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:48,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:48,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:48,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:48,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:48,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:48,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:48,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:49,068 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 226 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 04:51:49,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1551617924] [2020-10-14 04:51:49,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:49,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 04:51:49,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172771088] [2020-10-14 04:51:49,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 04:51:49,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:49,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 04:51:49,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2020-10-14 04:51:49,070 INFO L87 Difference]: Start difference. First operand 146 states and 149 transitions. Second operand 19 states. [2020-10-14 04:51:51,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:51,259 INFO L93 Difference]: Finished difference Result 156 states and 158 transitions. [2020-10-14 04:51:51,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 04:51:51,260 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 88 [2020-10-14 04:51:51,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:51,261 INFO L225 Difference]: With dead ends: 156 [2020-10-14 04:51:51,262 INFO L226 Difference]: Without dead ends: 148 [2020-10-14 04:51:51,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2020-10-14 04:51:51,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-14 04:51:51,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 146. [2020-10-14 04:51:51,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-14 04:51:51,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 148 transitions. [2020-10-14 04:51:51,275 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 148 transitions. Word has length 88 [2020-10-14 04:51:51,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:51,275 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 148 transitions. [2020-10-14 04:51:51,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 04:51:51,275 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 148 transitions. [2020-10-14 04:51:51,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-14 04:51:51,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:51,276 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:51,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-14 04:51:51,277 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:51,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:51,277 INFO L82 PathProgramCache]: Analyzing trace with hash -879384509, now seen corresponding path program 19 times [2020-10-14 04:51:51,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:51,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351162039] [2020-10-14 04:51:51,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:51,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:51,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:55,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:55,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 04:51:55,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:55,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3791 [2020-10-14 04:51:55,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:55,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:55,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 04:51:55,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:51:55,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 04:51:55,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:55,594 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2020-10-14 04:51:55,748 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2020-10-14 04:51:55,934 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2020-10-14 04:51:56,108 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2020-10-14 04:51:56,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:51:56,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:56,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:51:56,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:51:56,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:51:56,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:51:56,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:51:56,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:51:56,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:51:56,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:51:56,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:51:56,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:51:56,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:51:56,676 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:51:56,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351162039] [2020-10-14 04:51:56,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:51:56,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 04:51:56,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880859173] [2020-10-14 04:51:56,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 04:51:56,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:51:56,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 04:51:56,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-10-14 04:51:56,678 INFO L87 Difference]: Start difference. First operand 146 states and 148 transitions. Second operand 21 states. [2020-10-14 04:51:58,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:51:58,872 INFO L93 Difference]: Finished difference Result 154 states and 155 transitions. [2020-10-14 04:51:58,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 04:51:58,873 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 90 [2020-10-14 04:51:58,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:51:58,874 INFO L225 Difference]: With dead ends: 154 [2020-10-14 04:51:58,875 INFO L226 Difference]: Without dead ends: 99 [2020-10-14 04:51:58,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=47, Invalid=459, Unknown=0, NotChecked=0, Total=506 [2020-10-14 04:51:58,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-14 04:51:58,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2020-10-14 04:51:58,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-14 04:51:58,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2020-10-14 04:51:58,884 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 90 [2020-10-14 04:51:58,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:51:58,884 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2020-10-14 04:51:58,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 04:51:58,884 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2020-10-14 04:51:58,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-14 04:51:58,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:51:58,884 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:51:58,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-14 04:51:58,885 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:51:58,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:51:58,885 INFO L82 PathProgramCache]: Analyzing trace with hash -265616276, now seen corresponding path program 16 times [2020-10-14 04:51:58,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:51:58,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053162119] [2020-10-14 04:51:58,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:51:59,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:51:59,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:03,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:03,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 04:52:03,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:03,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4274 [2020-10-14 04:52:03,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:03,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:03,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 04:52:03,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:52:03,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 04:52:03,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:03,987 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2020-10-14 04:52:04,166 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2020-10-14 04:52:04,510 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 85 [2020-10-14 04:52:04,728 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 87 [2020-10-14 04:52:05,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:52:05,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:05,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:05,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:05,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:52:05,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:05,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:52:05,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:05,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:05,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:52:05,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:52:05,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:52:05,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:05,278 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 282 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:52:05,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053162119] [2020-10-14 04:52:05,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:52:05,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 04:52:05,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581006242] [2020-10-14 04:52:05,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 04:52:05,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:52:05,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 04:52:05,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=380, Unknown=0, NotChecked=0, Total=420 [2020-10-14 04:52:05,279 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand 21 states. [2020-10-14 04:52:08,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:52:08,303 INFO L93 Difference]: Finished difference Result 113 states and 115 transitions. [2020-10-14 04:52:08,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 04:52:08,304 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 90 [2020-10-14 04:52:08,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:52:08,306 INFO L225 Difference]: With dead ends: 113 [2020-10-14 04:52:08,306 INFO L226 Difference]: Without dead ends: 111 [2020-10-14 04:52:08,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=76, Invalid=794, Unknown=0, NotChecked=0, Total=870 [2020-10-14 04:52:08,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-14 04:52:08,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 105. [2020-10-14 04:52:08,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-14 04:52:08,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 107 transitions. [2020-10-14 04:52:08,317 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 107 transitions. Word has length 90 [2020-10-14 04:52:08,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:52:08,317 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 107 transitions. [2020-10-14 04:52:08,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 04:52:08,317 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 107 transitions. [2020-10-14 04:52:08,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-14 04:52:08,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:52:08,318 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:52:08,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-14 04:52:08,318 INFO L427 AbstractCegarLoop]: === Iteration 48 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:52:08,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:52:08,319 INFO L82 PathProgramCache]: Analyzing trace with hash 187221932, now seen corresponding path program 20 times [2020-10-14 04:52:08,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:52:08,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096971485] [2020-10-14 04:52:08,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:52:08,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:08,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:12,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:13,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:13,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 04:52:13,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:52:13,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5095 [2020-10-14 04:52:13,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:13,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:13,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 04:52:13,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:52:13,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 04:52:13,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:14,509 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 86 [2020-10-14 04:52:14,711 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 84 [2020-10-14 04:52:15,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:52:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:15,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:15,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:15,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:52:15,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:15,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:52:15,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:15,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:15,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:52:15,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:52:15,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:52:15,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:15,358 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 0 proven. 268 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:52:15,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096971485] [2020-10-14 04:52:15,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:52:15,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 04:52:15,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241188114] [2020-10-14 04:52:15,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 04:52:15,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:52:15,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 04:52:15,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=380, Unknown=0, NotChecked=0, Total=420 [2020-10-14 04:52:15,359 INFO L87 Difference]: Start difference. First operand 105 states and 107 transitions. Second operand 21 states. [2020-10-14 04:52:18,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:52:18,293 INFO L93 Difference]: Finished difference Result 168 states and 171 transitions. [2020-10-14 04:52:18,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 04:52:18,294 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 94 [2020-10-14 04:52:18,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:52:18,296 INFO L225 Difference]: With dead ends: 168 [2020-10-14 04:52:18,296 INFO L226 Difference]: Without dead ends: 160 [2020-10-14 04:52:18,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=76, Invalid=794, Unknown=0, NotChecked=0, Total=870 [2020-10-14 04:52:18,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-14 04:52:18,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 156. [2020-10-14 04:52:18,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-14 04:52:18,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 159 transitions. [2020-10-14 04:52:18,307 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 159 transitions. Word has length 94 [2020-10-14 04:52:18,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:52:18,308 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 159 transitions. [2020-10-14 04:52:18,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 04:52:18,308 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 159 transitions. [2020-10-14 04:52:18,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 04:52:18,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:52:18,309 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:52:18,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-14 04:52:18,309 INFO L427 AbstractCegarLoop]: === Iteration 49 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:52:18,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:52:18,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1832106843, now seen corresponding path program 17 times [2020-10-14 04:52:18,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:52:18,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1902373471] [2020-10-14 04:52:18,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:52:18,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:18,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:23,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:23,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 04:52:23,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:23,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4718 [2020-10-14 04:52:23,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:23,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:23,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 04:52:23,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:52:23,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 04:52:23,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:23,893 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2020-10-14 04:52:24,094 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2020-10-14 04:52:24,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:52:24,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:24,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:24,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:24,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:52:24,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:24,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:52:24,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:24,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:24,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:52:24,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:52:24,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:52:24,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:24,804 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 16 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:52:24,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1902373471] [2020-10-14 04:52:24,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:52:24,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 04:52:24,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893198450] [2020-10-14 04:52:24,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 04:52:24,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:52:24,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 04:52:24,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2020-10-14 04:52:24,806 INFO L87 Difference]: Start difference. First operand 156 states and 159 transitions. Second operand 22 states. [2020-10-14 04:52:27,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:52:27,441 INFO L93 Difference]: Finished difference Result 182 states and 186 transitions. [2020-10-14 04:52:27,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 04:52:27,441 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 96 [2020-10-14 04:52:27,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:52:27,444 INFO L225 Difference]: With dead ends: 182 [2020-10-14 04:52:27,444 INFO L226 Difference]: Without dead ends: 166 [2020-10-14 04:52:27,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2020-10-14 04:52:27,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-14 04:52:27,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 162. [2020-10-14 04:52:27,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-14 04:52:27,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 165 transitions. [2020-10-14 04:52:27,459 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 165 transitions. Word has length 96 [2020-10-14 04:52:27,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:52:27,459 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 165 transitions. [2020-10-14 04:52:27,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 04:52:27,460 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 165 transitions. [2020-10-14 04:52:27,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-14 04:52:27,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:52:27,461 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:52:27,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-14 04:52:27,461 INFO L427 AbstractCegarLoop]: === Iteration 50 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:52:27,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:52:27,461 INFO L82 PathProgramCache]: Analyzing trace with hash 64752277, now seen corresponding path program 21 times [2020-10-14 04:52:27,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:52:27,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [888043592] [2020-10-14 04:52:27,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:52:27,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:28,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:32,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:33,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:33,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 04:52:33,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:52:33,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6144 [2020-10-14 04:52:33,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:33,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:33,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 04:52:33,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:52:33,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 04:52:33,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:34,615 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2020-10-14 04:52:34,878 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2020-10-14 04:52:35,098 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 86 [2020-10-14 04:52:35,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:52:35,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:35,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:35,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:35,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:52:35,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:35,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:52:35,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:35,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:35,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:52:35,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:52:35,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:52:35,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:35,834 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 0 proven. 298 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 04:52:35,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [888043592] [2020-10-14 04:52:35,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:52:35,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 04:52:35,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329096071] [2020-10-14 04:52:35,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 04:52:35,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:52:35,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 04:52:35,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=380, Unknown=0, NotChecked=0, Total=420 [2020-10-14 04:52:35,836 INFO L87 Difference]: Start difference. First operand 162 states and 165 transitions. Second operand 21 states. [2020-10-14 04:52:38,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:52:38,767 INFO L93 Difference]: Finished difference Result 172 states and 174 transitions. [2020-10-14 04:52:38,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 04:52:38,768 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 98 [2020-10-14 04:52:38,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:52:38,769 INFO L225 Difference]: With dead ends: 172 [2020-10-14 04:52:38,769 INFO L226 Difference]: Without dead ends: 164 [2020-10-14 04:52:38,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=76, Invalid=794, Unknown=0, NotChecked=0, Total=870 [2020-10-14 04:52:38,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-14 04:52:38,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 162. [2020-10-14 04:52:38,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-14 04:52:38,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 164 transitions. [2020-10-14 04:52:38,785 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 164 transitions. Word has length 98 [2020-10-14 04:52:38,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:52:38,785 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 164 transitions. [2020-10-14 04:52:38,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 04:52:38,785 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 164 transitions. [2020-10-14 04:52:38,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 04:52:38,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:52:38,786 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:52:38,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-14 04:52:38,787 INFO L427 AbstractCegarLoop]: === Iteration 51 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:52:38,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:52:38,788 INFO L82 PathProgramCache]: Analyzing trace with hash -703697125, now seen corresponding path program 22 times [2020-10-14 04:52:38,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:52:38,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791122077] [2020-10-14 04:52:38,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:52:39,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:39,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:44,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:44,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 04:52:44,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:44,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-14 04:52:44,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:44,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:44,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 04:52:44,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:52:44,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 04:52:44,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:52:44,791 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-10-14 04:52:45,136 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 89 [2020-10-14 04:52:45,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:52:45,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:45,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:45,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:45,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:52:45,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:45,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:52:45,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:45,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:45,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:52:45,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:52:45,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:52:45,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:45,807 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:52:45,808 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791122077] [2020-10-14 04:52:45,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:52:45,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 04:52:45,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736378217] [2020-10-14 04:52:45,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 04:52:45,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:52:45,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 04:52:45,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-10-14 04:52:45,809 INFO L87 Difference]: Start difference. First operand 162 states and 164 transitions. Second operand 23 states. [2020-10-14 04:52:48,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:52:48,588 INFO L93 Difference]: Finished difference Result 170 states and 171 transitions. [2020-10-14 04:52:48,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 04:52:48,589 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 100 [2020-10-14 04:52:48,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:52:48,591 INFO L225 Difference]: With dead ends: 170 [2020-10-14 04:52:48,591 INFO L226 Difference]: Without dead ends: 109 [2020-10-14 04:52:48,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=47, Invalid=505, Unknown=0, NotChecked=0, Total=552 [2020-10-14 04:52:48,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-14 04:52:48,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-10-14 04:52:48,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-14 04:52:48,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 110 transitions. [2020-10-14 04:52:48,603 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 110 transitions. Word has length 100 [2020-10-14 04:52:48,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:52:48,603 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 110 transitions. [2020-10-14 04:52:48,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 04:52:48,604 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 110 transitions. [2020-10-14 04:52:48,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-14 04:52:48,604 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:52:48,605 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:52:48,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-14 04:52:48,605 INFO L427 AbstractCegarLoop]: === Iteration 52 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:52:48,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:52:48,605 INFO L82 PathProgramCache]: Analyzing trace with hash 102885380, now seen corresponding path program 18 times [2020-10-14 04:52:48,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:52:48,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1396725784] [2020-10-14 04:52:48,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:52:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:48,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:53,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:53,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 04:52:53,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:53,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5148 [2020-10-14 04:52:53,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:53,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:53,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 04:52:53,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:52:53,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 04:52:53,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:54,604 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2020-10-14 04:52:54,867 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2020-10-14 04:52:55,097 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2020-10-14 04:52:55,428 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 94 [2020-10-14 04:52:55,905 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 96 [2020-10-14 04:52:56,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:52:56,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:52:56,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:52:56,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:52:56,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:52:56,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:52:56,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:52:56,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:52:56,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:52:56,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:52:56,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:52:56,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:52:56,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:52:56,579 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 0 proven. 362 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:52:56,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1396725784] [2020-10-14 04:52:56,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:52:56,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 04:52:56,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239666165] [2020-10-14 04:52:56,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 04:52:56,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:52:56,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 04:52:56,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=462, Unknown=0, NotChecked=0, Total=506 [2020-10-14 04:52:56,581 INFO L87 Difference]: Start difference. First operand 109 states and 110 transitions. Second operand 23 states. [2020-10-14 04:52:58,920 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-14 04:53:00,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:53:00,491 INFO L93 Difference]: Finished difference Result 176 states and 179 transitions. [2020-10-14 04:53:00,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 04:53:00,492 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 100 [2020-10-14 04:53:00,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:53:00,494 INFO L225 Difference]: With dead ends: 176 [2020-10-14 04:53:00,494 INFO L226 Difference]: Without dead ends: 174 [2020-10-14 04:53:00,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=84, Invalid=972, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 04:53:00,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-14 04:53:00,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 166. [2020-10-14 04:53:00,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-14 04:53:00,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 169 transitions. [2020-10-14 04:53:00,510 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 169 transitions. Word has length 100 [2020-10-14 04:53:00,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:53:00,510 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 169 transitions. [2020-10-14 04:53:00,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 04:53:00,510 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 169 transitions. [2020-10-14 04:53:00,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 04:53:00,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:53:00,511 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:53:00,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-14 04:53:00,512 INFO L427 AbstractCegarLoop]: === Iteration 53 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:53:00,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:53:00,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1118560444, now seen corresponding path program 23 times [2020-10-14 04:53:00,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:53:00,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885948254] [2020-10-14 04:53:00,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:53:00,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:00,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:05,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:05,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 04:53:05,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:05,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 04:53:05,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:05,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:05,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 04:53:05,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:53:05,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 04:53:05,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:06,265 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2020-10-14 04:53:06,711 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 80 [2020-10-14 04:53:07,163 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 91 [2020-10-14 04:53:07,505 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 104 [2020-10-14 04:53:08,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:53:08,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:08,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:08,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:08,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:53:08,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:08,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:53:08,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:08,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:08,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:53:08,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:53:08,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:53:08,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:08,226 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:53:08,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885948254] [2020-10-14 04:53:08,227 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:53:08,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 04:53:08,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825806001] [2020-10-14 04:53:08,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 04:53:08,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:53:08,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 04:53:08,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=462, Unknown=0, NotChecked=0, Total=506 [2020-10-14 04:53:08,228 INFO L87 Difference]: Start difference. First operand 166 states and 169 transitions. Second operand 23 states. [2020-10-14 04:53:10,277 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 83 [2020-10-14 04:53:11,159 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 109 [2020-10-14 04:53:12,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:53:12,856 INFO L93 Difference]: Finished difference Result 178 states and 180 transitions. [2020-10-14 04:53:12,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 04:53:12,857 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 104 [2020-10-14 04:53:12,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:53:12,859 INFO L225 Difference]: With dead ends: 178 [2020-10-14 04:53:12,859 INFO L226 Difference]: Without dead ends: 170 [2020-10-14 04:53:12,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=84, Invalid=972, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 04:53:12,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-14 04:53:12,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 122. [2020-10-14 04:53:12,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-14 04:53:12,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 124 transitions. [2020-10-14 04:53:12,881 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 124 transitions. Word has length 104 [2020-10-14 04:53:12,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:53:12,881 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 124 transitions. [2020-10-14 04:53:12,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 04:53:12,882 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 124 transitions. [2020-10-14 04:53:12,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-14 04:53:12,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:53:12,883 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:53:12,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-14 04:53:12,884 INFO L427 AbstractCegarLoop]: === Iteration 54 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:53:12,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:53:12,884 INFO L82 PathProgramCache]: Analyzing trace with hash -311977939, now seen corresponding path program 19 times [2020-10-14 04:53:12,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:53:12,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656357140] [2020-10-14 04:53:12,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:53:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:13,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:18,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:18,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 04:53:18,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:18,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-14 04:53:18,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:18,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:18,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 04:53:18,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:53:18,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 04:53:18,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:19,322 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2020-10-14 04:53:19,537 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2020-10-14 04:53:19,829 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 96 [2020-10-14 04:53:20,103 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 96 [2020-10-14 04:53:20,401 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 96 [2020-10-14 04:53:21,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:53:21,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:21,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:21,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:21,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:53:21,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:21,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 04:53:21,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:21,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:21,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:53:21,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:53:21,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:53:21,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:21,162 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 4 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:53:21,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656357140] [2020-10-14 04:53:21,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:53:21,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 04:53:21,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897376741] [2020-10-14 04:53:21,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 04:53:21,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:53:21,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 04:53:21,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=505, Unknown=0, NotChecked=0, Total=552 [2020-10-14 04:53:21,163 INFO L87 Difference]: Start difference. First operand 122 states and 124 transitions. Second operand 24 states. [2020-10-14 04:53:23,618 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-10-14 04:53:25,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:53:25,188 INFO L93 Difference]: Finished difference Result 182 states and 185 transitions. [2020-10-14 04:53:25,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 04:53:25,189 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 104 [2020-10-14 04:53:25,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:53:25,191 INFO L225 Difference]: With dead ends: 182 [2020-10-14 04:53:25,191 INFO L226 Difference]: Without dead ends: 180 [2020-10-14 04:53:25,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=88, Invalid=1034, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 04:53:25,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-14 04:53:25,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 172. [2020-10-14 04:53:25,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-14 04:53:25,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 175 transitions. [2020-10-14 04:53:25,207 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 175 transitions. Word has length 104 [2020-10-14 04:53:25,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:53:25,207 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 175 transitions. [2020-10-14 04:53:25,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 04:53:25,208 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 175 transitions. [2020-10-14 04:53:25,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 04:53:25,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:53:25,209 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:53:25,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-14 04:53:25,209 INFO L427 AbstractCegarLoop]: === Iteration 55 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:53:25,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:53:25,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1105693939, now seen corresponding path program 20 times [2020-10-14 04:53:25,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:53:25,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5467435] [2020-10-14 04:53:25,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:53:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:53:25,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:53:30,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:53:30,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 04:53:30,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:53:30,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-14 04:53:30,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:53:30,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:53:30,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 04:53:30,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:53:30,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 04:53:30,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:53:31,163 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-10-14 04:53:31,381 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-10-14 04:53:31,676 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 88 [2020-10-14 04:53:31,831 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 96