/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 SingleStatement --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=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:38:13,906 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:38:13,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:38:13,956 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:38:13,957 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:38:13,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:38:13,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:38:13,968 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:38:13,972 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:38:13,974 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:38:13,976 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:38:13,978 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:38:13,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:38:13,982 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:38:13,985 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:38:13,987 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:38:13,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:38:13,989 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:38:13,991 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:38:14,000 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:38:14,002 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:38:14,004 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:38:14,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:38:14,006 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:38:14,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:38:14,009 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:38:14,010 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:38:14,013 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:38:14,013 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:38:14,024 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:38:14,024 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:38:14,025 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:38:14,026 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:38:14,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:38:14,028 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:38:14,028 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:38:14,029 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:38:14,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:38:14,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:38:14,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:38:14,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:38:14,032 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 [2020-09-24 21:38:14,057 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:38:14,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:38:14,059 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:38:14,059 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:38:14,059 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:38:14,060 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:38:14,060 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:38:14,060 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:38:14,060 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:38:14,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:38:14,061 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:38:14,061 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:38:14,061 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:38:14,061 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:38:14,061 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:38:14,062 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:38:14,062 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:38:14,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:38:14,062 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:38:14,062 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:38:14,063 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:38:14,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:38:14,063 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:38:14,063 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:38:14,063 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:38:14,064 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:38:14,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:38:14,064 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:38:14,064 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:38:14,064 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 -> SingleStatement 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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:38:14,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:38:14,579 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:38:14,583 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:38:14,584 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:38:14,585 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:38:14,586 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-09-24 21:38:14,670 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da1a8b4d4/c7632c4990284bdc954454a8ffbae00b/FLAGf95e84061 [2020-09-24 21:38:15,299 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:38:15,300 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-09-24 21:38:15,324 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da1a8b4d4/c7632c4990284bdc954454a8ffbae00b/FLAGf95e84061 [2020-09-24 21:38:15,518 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da1a8b4d4/c7632c4990284bdc954454a8ffbae00b [2020-09-24 21:38:15,532 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:38:15,539 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:38:15,542 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:38:15,542 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:38:15,547 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:38:15,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:38:15" (1/1) ... [2020-09-24 21:38:15,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@af20ea9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:15, skipping insertion in model container [2020-09-24 21:38:15,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:38:15" (1/1) ... [2020-09-24 21:38:15,563 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:38:15,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:38:16,153 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:38:16,172 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:38:16,251 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:38:16,305 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:38:16,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:16 WrapperNode [2020-09-24 21:38:16,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:38:16,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:38:16,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:38:16,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:38:16,327 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:16" (1/1) ... [2020-09-24 21:38:16,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:16" (1/1) ... [2020-09-24 21:38:16,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:16" (1/1) ... [2020-09-24 21:38:16,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:16" (1/1) ... [2020-09-24 21:38:16,367 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:16" (1/1) ... [2020-09-24 21:38:16,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:16" (1/1) ... [2020-09-24 21:38:16,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:16" (1/1) ... [2020-09-24 21:38:16,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:38:16,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:38:16,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:38:16,387 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:38:16,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:16" (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 [2020-09-24 21:38:16,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:38:16,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:38:16,474 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:38:16,474 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 21:38:16,474 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 21:38:16,474 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 21:38:16,474 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 21:38:16,475 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 21:38:16,475 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 21:38:16,475 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 21:38:16,475 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 21:38:16,475 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 21:38:16,475 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 21:38:16,476 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 21:38:16,476 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 21:38:16,476 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 21:38:16,476 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 21:38:16,476 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 21:38:16,476 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 21:38:16,477 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 21:38:16,478 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 21:38:16,478 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 21:38:16,479 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 21:38:16,479 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 21:38:16,480 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 21:38:16,481 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 21:38:16,482 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 21:38:16,482 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 21:38:16,482 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 21:38:16,483 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 21:38:16,483 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 21:38:16,483 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 21:38:16,483 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 21:38:16,483 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 21:38:16,483 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 21:38:16,484 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 21:38:16,484 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 21:38:16,484 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 21:38:16,484 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 21:38:16,484 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 21:38:16,484 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 21:38:16,485 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 21:38:16,485 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 21:38:16,485 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 21:38:16,485 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 21:38:16,485 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 21:38:16,485 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 21:38:16,485 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 21:38:16,486 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 21:38:16,486 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 21:38:16,486 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 21:38:16,486 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 21:38:16,486 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 21:38:16,486 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 21:38:16,486 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 21:38:16,487 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 21:38:16,487 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 21:38:16,487 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-24 21:38:16,487 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 21:38:16,487 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 21:38:16,487 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 21:38:16,487 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-24 21:38:16,487 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 21:38:16,488 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 21:38:16,488 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-24 21:38:16,488 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 21:38:16,488 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:38:16,488 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-24 21:38:16,488 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 21:38:16,488 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 21:38:16,489 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 21:38:16,489 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 21:38:16,489 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 21:38:16,489 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 21:38:16,489 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 21:38:16,489 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 21:38:16,490 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 21:38:16,490 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 21:38:16,490 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 21:38:16,490 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 21:38:16,490 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 21:38:16,490 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 21:38:16,491 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 21:38:16,491 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 21:38:16,491 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 21:38:16,491 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 21:38:16,491 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 21:38:16,491 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 21:38:16,492 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 21:38:16,492 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 21:38:16,492 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 21:38:16,492 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 21:38:16,492 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 21:38:16,492 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 21:38:16,492 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 21:38:16,492 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 21:38:16,492 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 21:38:16,493 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 21:38:16,493 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 21:38:16,493 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 21:38:16,493 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 21:38:16,493 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 21:38:16,493 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 21:38:16,493 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 21:38:16,493 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 21:38:16,493 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 21:38:16,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:38:16,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:38:16,494 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:38:16,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 21:38:16,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 21:38:16,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 21:38:16,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 21:38:16,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 21:38:16,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 21:38:16,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:38:16,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:38:17,165 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:38:17,166 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-09-24 21:38:17,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:38:17 BoogieIcfgContainer [2020-09-24 21:38:17,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:38:17,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:38:17,182 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:38:17,187 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:38:17,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:38:15" (1/3) ... [2020-09-24 21:38:17,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bb1c007 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:38:17, skipping insertion in model container [2020-09-24 21:38:17,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:16" (2/3) ... [2020-09-24 21:38:17,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bb1c007 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:38:17, skipping insertion in model container [2020-09-24 21:38:17,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:38:17" (3/3) ... [2020-09-24 21:38:17,198 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-2.i [2020-09-24 21:38:17,211 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:38:17,223 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-09-24 21:38:17,248 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-24 21:38:17,291 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:38:17,292 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:38:17,292 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:38:17,292 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:38:17,292 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:38:17,293 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:38:17,293 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:38:17,293 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:38:17,316 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states. [2020-09-24 21:38:17,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-24 21:38:17,324 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:17,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:38:17,326 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:17,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:17,332 INFO L82 PathProgramCache]: Analyzing trace with hash -159181327, now seen corresponding path program 1 times [2020-09-24 21:38:17,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:17,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [465742839] [2020-09-24 21:38:17,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:17,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:17,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:17,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:18,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:18,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-24 21:38:18,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:38:18,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 555 [2020-09-24 21:38:18,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:18,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:38:18,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:38:18,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 21:38:18,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 21:38:18,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:38:18,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:18,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:18,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:18,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:38:18,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:18,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 21:38:18,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:18,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:18,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:18,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:18,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:18,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:38:18,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [465742839] [2020-09-24 21:38:18,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:38:18,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 21:38:18,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886253269] [2020-09-24 21:38:18,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:38:18,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:38:18,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:38:18,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:38:18,290 INFO L87 Difference]: Start difference. First operand 98 states. Second operand 8 states. [2020-09-24 21:38:18,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:38:18,755 INFO L93 Difference]: Finished difference Result 205 states and 253 transitions. [2020-09-24 21:38:18,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 21:38:18,757 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-09-24 21:38:18,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:38:18,772 INFO L225 Difference]: With dead ends: 205 [2020-09-24 21:38:18,772 INFO L226 Difference]: Without dead ends: 90 [2020-09-24 21:38:18,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-09-24 21:38:18,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-24 21:38:18,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 72. [2020-09-24 21:38:18,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-24 21:38:18,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2020-09-24 21:38:18,839 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 21 [2020-09-24 21:38:18,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:38:18,840 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2020-09-24 21:38:18,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:38:18,841 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2020-09-24 21:38:18,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-24 21:38:18,842 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:18,843 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:38:18,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:38:18,843 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:18,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:18,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1518762392, now seen corresponding path program 1 times [2020-09-24 21:38:18,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:18,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [681350616] [2020-09-24 21:38:18,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:18,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:18,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:19,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:19,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 21:38:19,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:19,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-09-24 21:38:19,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:19,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:38:19,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 21:38:19,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:38:19,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:38:19,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:38:19,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:19,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:19,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:19,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:38:19,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:19,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 21:38:19,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:19,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:19,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:19,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:19,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:38:19,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:38:19,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [681350616] [2020-09-24 21:38:19,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:38:19,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 21:38:19,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956413241] [2020-09-24 21:38:19,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 21:38:19,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:38:19,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 21:38:19,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:38:19,229 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand 6 states. [2020-09-24 21:38:19,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:38:19,498 INFO L93 Difference]: Finished difference Result 120 states and 126 transitions. [2020-09-24 21:38:19,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 21:38:19,499 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-09-24 21:38:19,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:38:19,502 INFO L225 Difference]: With dead ends: 120 [2020-09-24 21:38:19,502 INFO L226 Difference]: Without dead ends: 117 [2020-09-24 21:38:19,503 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 [2020-09-24 21:38:19,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-09-24 21:38:19,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 81. [2020-09-24 21:38:19,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-24 21:38:19,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-09-24 21:38:19,515 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 27 [2020-09-24 21:38:19,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:38:19,515 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-09-24 21:38:19,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 21:38:19,515 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-09-24 21:38:19,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-24 21:38:19,517 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:19,517 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:38:19,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:38:19,518 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:19,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:19,518 INFO L82 PathProgramCache]: Analyzing trace with hash 2047332937, now seen corresponding path program 1 times [2020-09-24 21:38:19,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:19,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157334295] [2020-09-24 21:38:19,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:19,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:19,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:19,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:20,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:20,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 21:38:20,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:38:20,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 480 [2020-09-24 21:38:20,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:20,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:38:20,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-24 21:38:20,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 21:38:20,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:20,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:38:20,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:20,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:20,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:20,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:38:20,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:20,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 21:38:20,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:20,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:20,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:20,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:20,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:20,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:38:20,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157334295] [2020-09-24 21:38:20,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:38:20,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 21:38:20,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784163248] [2020-09-24 21:38:20,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 21:38:20,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:38:20,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 21:38:20,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:38:20,157 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 6 states. [2020-09-24 21:38:20,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:38:20,363 INFO L93 Difference]: Finished difference Result 136 states and 143 transitions. [2020-09-24 21:38:20,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 21:38:20,363 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-09-24 21:38:20,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:38:20,365 INFO L225 Difference]: With dead ends: 136 [2020-09-24 21:38:20,365 INFO L226 Difference]: Without dead ends: 114 [2020-09-24 21:38:20,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:38:20,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-24 21:38:20,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 86. [2020-09-24 21:38:20,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-24 21:38:20,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2020-09-24 21:38:20,376 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 36 [2020-09-24 21:38:20,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:38:20,376 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2020-09-24 21:38:20,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 21:38:20,376 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2020-09-24 21:38:20,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-24 21:38:20,378 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:20,378 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:38:20,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:38:20,379 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:20,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:20,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1237644091, now seen corresponding path program 1 times [2020-09-24 21:38:20,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:20,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058661479] [2020-09-24 21:38:20,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:20,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:20,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:21,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:21,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 21:38:21,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:21,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 750 [2020-09-24 21:38:21,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:21,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 21:38:21,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:38:21,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 21:38:21,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:38:21,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:38:21,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:21,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:21,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:21,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:38:21,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:21,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 21:38:21,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:21,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:21,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:21,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:21,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:38:21,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:38:21,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058661479] [2020-09-24 21:38:21,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:38:21,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 21:38:21,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434840117] [2020-09-24 21:38:21,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 21:38:21,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:38:21,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 21:38:21,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-09-24 21:38:21,732 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand 15 states. [2020-09-24 21:38:22,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:38:22,936 INFO L93 Difference]: Finished difference Result 166 states and 175 transitions. [2020-09-24 21:38:22,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 21:38:22,937 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 40 [2020-09-24 21:38:22,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:38:22,939 INFO L225 Difference]: With dead ends: 166 [2020-09-24 21:38:22,939 INFO L226 Difference]: Without dead ends: 163 [2020-09-24 21:38:22,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=192, Invalid=564, Unknown=0, NotChecked=0, Total=756 [2020-09-24 21:38:22,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-09-24 21:38:22,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 106. [2020-09-24 21:38:22,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-24 21:38:22,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 112 transitions. [2020-09-24 21:38:22,965 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 112 transitions. Word has length 40 [2020-09-24 21:38:22,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:38:22,965 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 112 transitions. [2020-09-24 21:38:22,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 21:38:22,965 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 112 transitions. [2020-09-24 21:38:22,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-24 21:38:22,971 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:22,971 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:38:22,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:38:22,971 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:22,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:22,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1411163060, now seen corresponding path program 1 times [2020-09-24 21:38:22,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:22,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1259229163] [2020-09-24 21:38:22,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:22,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:23,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:23,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:23,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:24,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:24,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:25,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:27,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:27,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:27,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:27,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-24 21:38:27,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:38:27,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4751 [2020-09-24 21:38:27,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:27,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 21:38:27,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-24 21:38:27,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 21:38:27,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:28,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:38:28,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:28,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:28,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:28,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:38:28,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:28,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:38:28,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:28,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:28,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:28,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:28,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:28,183 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:38:28,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1259229163] [2020-09-24 21:38:28,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:38:28,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 21:38:28,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825190632] [2020-09-24 21:38:28,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 21:38:28,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:38:28,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 21:38:28,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-09-24 21:38:28,186 INFO L87 Difference]: Start difference. First operand 106 states and 112 transitions. Second operand 14 states. [2020-09-24 21:38:29,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:38:29,147 INFO L93 Difference]: Finished difference Result 160 states and 169 transitions. [2020-09-24 21:38:29,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 21:38:29,148 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 43 [2020-09-24 21:38:29,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:38:29,149 INFO L225 Difference]: With dead ends: 160 [2020-09-24 21:38:29,149 INFO L226 Difference]: Without dead ends: 138 [2020-09-24 21:38:29,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2020-09-24 21:38:29,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-09-24 21:38:29,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 113. [2020-09-24 21:38:29,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-09-24 21:38:29,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 119 transitions. [2020-09-24 21:38:29,160 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 119 transitions. Word has length 43 [2020-09-24 21:38:29,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:38:29,161 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 119 transitions. [2020-09-24 21:38:29,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 21:38:29,161 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 119 transitions. [2020-09-24 21:38:29,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-24 21:38:29,163 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:29,163 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:38:29,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:38:29,163 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:29,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:29,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1215747511, now seen corresponding path program 1 times [2020-09-24 21:38:29,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:29,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907433372] [2020-09-24 21:38:29,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:29,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:30,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:30,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 21:38:30,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:30,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1311 [2020-09-24 21:38:30,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:30,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 21:38:30,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:38:30,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 21:38:30,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:38:31,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:38:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:31,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:31,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:31,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:38:31,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:31,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:38:31,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:31,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:31,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:31,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:31,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:31,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:38:31,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907433372] [2020-09-24 21:38:31,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:38:31,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 21:38:31,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021161441] [2020-09-24 21:38:31,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 21:38:31,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:38:31,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 21:38:31,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-09-24 21:38:31,394 INFO L87 Difference]: Start difference. First operand 113 states and 119 transitions. Second operand 19 states. [2020-09-24 21:38:33,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:38:33,222 INFO L93 Difference]: Finished difference Result 188 states and 198 transitions. [2020-09-24 21:38:33,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-24 21:38:33,222 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 47 [2020-09-24 21:38:33,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:38:33,224 INFO L225 Difference]: With dead ends: 188 [2020-09-24 21:38:33,224 INFO L226 Difference]: Without dead ends: 185 [2020-09-24 21:38:33,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=285, Invalid=1121, Unknown=0, NotChecked=0, Total=1406 [2020-09-24 21:38:33,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-09-24 21:38:33,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 122. [2020-09-24 21:38:33,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-24 21:38:33,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 128 transitions. [2020-09-24 21:38:33,248 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 128 transitions. Word has length 47 [2020-09-24 21:38:33,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:38:33,248 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 128 transitions. [2020-09-24 21:38:33,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 21:38:33,248 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 128 transitions. [2020-09-24 21:38:33,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-24 21:38:33,252 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:33,253 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:38:33,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 21:38:33,253 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:33,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:33,254 INFO L82 PathProgramCache]: Analyzing trace with hash 632390076, now seen corresponding path program 1 times [2020-09-24 21:38:33,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:33,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [931575678] [2020-09-24 21:38:33,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:33,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:33,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:33,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:34,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:37,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:38,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:38,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 21:38:38,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:38:38,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-24 21:38:38,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:38,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 21:38:38,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-24 21:38:38,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-24 21:38:38,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:38:38,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:38:38,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:38,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:38,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:38,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:38:38,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:38,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:38:38,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:38,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:38,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:38,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:38,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:38,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:38:38,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [931575678] [2020-09-24 21:38:38,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:38:38,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 21:38:38,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749074085] [2020-09-24 21:38:38,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 21:38:38,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:38:38,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 21:38:38,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-09-24 21:38:38,832 INFO L87 Difference]: Start difference. First operand 122 states and 128 transitions. Second operand 16 states. [2020-09-24 21:38:40,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:38:40,470 INFO L93 Difference]: Finished difference Result 214 states and 225 transitions. [2020-09-24 21:38:40,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-24 21:38:40,471 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 49 [2020-09-24 21:38:40,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:38:40,473 INFO L225 Difference]: With dead ends: 214 [2020-09-24 21:38:40,473 INFO L226 Difference]: Without dead ends: 212 [2020-09-24 21:38:40,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=305, Invalid=1027, Unknown=0, NotChecked=0, Total=1332 [2020-09-24 21:38:40,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-09-24 21:38:40,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 141. [2020-09-24 21:38:40,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-09-24 21:38:40,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 149 transitions. [2020-09-24 21:38:40,498 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 149 transitions. Word has length 49 [2020-09-24 21:38:40,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:38:40,501 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 149 transitions. [2020-09-24 21:38:40,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 21:38:40,501 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 149 transitions. [2020-09-24 21:38:40,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-24 21:38:40,502 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:40,502 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:38:40,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 21:38:40,503 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:40,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:40,503 INFO L82 PathProgramCache]: Analyzing trace with hash -62360599, now seen corresponding path program 2 times [2020-09-24 21:38:40,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:40,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665360871] [2020-09-24 21:38:40,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:40,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:40,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:40,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:40,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 21:38:40,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:40,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-09-24 21:38:40,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:40,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:38:40,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 21:38:40,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 21:38:40,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:38:40,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:38:40,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:40,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:40,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:40,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:38:40,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:40,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:38:40,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:40,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:40,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:40,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:40,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:38:40,836 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 21:38:40,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665360871] [2020-09-24 21:38:40,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:38:40,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 21:38:40,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579678605] [2020-09-24 21:38:40,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:38:40,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:38:40,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:38:40,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:38:40,839 INFO L87 Difference]: Start difference. First operand 141 states and 149 transitions. Second operand 7 states. [2020-09-24 21:38:41,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:38:41,172 INFO L93 Difference]: Finished difference Result 163 states and 172 transitions. [2020-09-24 21:38:41,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 21:38:41,172 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 50 [2020-09-24 21:38:41,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:38:41,173 INFO L225 Difference]: With dead ends: 163 [2020-09-24 21:38:41,174 INFO L226 Difference]: Without dead ends: 122 [2020-09-24 21:38:41,175 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:38:41,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-09-24 21:38:41,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2020-09-24 21:38:41,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-24 21:38:41,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 129 transitions. [2020-09-24 21:38:41,183 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 129 transitions. Word has length 50 [2020-09-24 21:38:41,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:38:41,184 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 129 transitions. [2020-09-24 21:38:41,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:38:41,184 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 129 transitions. [2020-09-24 21:38:41,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-24 21:38:41,185 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:41,185 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:38:41,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 21:38:41,186 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:41,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:41,187 INFO L82 PathProgramCache]: Analyzing trace with hash 282359427, now seen corresponding path program 1 times [2020-09-24 21:38:41,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:41,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506804746] [2020-09-24 21:38:41,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:41,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:41,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:42,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:44,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:44,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 21:38:44,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:38:44,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3014 [2020-09-24 21:38:44,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:44,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 21:38:44,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-24 21:38:44,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-24 21:38:44,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:38:44,683 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 46 [2020-09-24 21:38:45,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:38:45,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:45,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:45,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:45,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:38:45,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:45,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:38:45,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:45,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:45,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:45,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:45,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:45,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:38:45,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506804746] [2020-09-24 21:38:45,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:38:45,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 21:38:45,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921352711] [2020-09-24 21:38:45,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 21:38:45,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:38:45,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 21:38:45,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2020-09-24 21:38:45,352 INFO L87 Difference]: Start difference. First operand 122 states and 129 transitions. Second operand 17 states. [2020-09-24 21:38:45,924 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-09-24 21:38:46,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:38:46,933 INFO L93 Difference]: Finished difference Result 176 states and 185 transitions. [2020-09-24 21:38:46,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 21:38:46,933 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 53 [2020-09-24 21:38:46,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:38:46,934 INFO L225 Difference]: With dead ends: 176 [2020-09-24 21:38:46,934 INFO L226 Difference]: Without dead ends: 149 [2020-09-24 21:38:46,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=212, Invalid=910, Unknown=0, NotChecked=0, Total=1122 [2020-09-24 21:38:46,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-09-24 21:38:46,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 117. [2020-09-24 21:38:46,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-09-24 21:38:46,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 123 transitions. [2020-09-24 21:38:46,943 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 123 transitions. Word has length 53 [2020-09-24 21:38:46,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:38:46,943 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 123 transitions. [2020-09-24 21:38:46,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 21:38:46,943 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 123 transitions. [2020-09-24 21:38:46,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-24 21:38:46,944 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:46,945 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:38:46,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 21:38:46,945 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:46,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:46,945 INFO L82 PathProgramCache]: Analyzing trace with hash 231328440, now seen corresponding path program 2 times [2020-09-24 21:38:46,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:46,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043992182] [2020-09-24 21:38:46,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:46,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:46,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:48,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:48,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 21:38:48,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:48,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1153 [2020-09-24 21:38:48,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:48,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 21:38:48,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:38:48,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-24 21:38:48,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:48,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:38:48,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:48,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:48,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:48,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:38:48,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:48,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:38:48,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:48,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:48,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:48,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:48,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:49,013 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:38:49,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043992182] [2020-09-24 21:38:49,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:38:49,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 21:38:49,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994666447] [2020-09-24 21:38:49,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 21:38:49,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:38:49,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 21:38:49,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2020-09-24 21:38:49,016 INFO L87 Difference]: Start difference. First operand 117 states and 123 transitions. Second operand 19 states. [2020-09-24 21:38:50,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:38:50,461 INFO L93 Difference]: Finished difference Result 197 states and 208 transitions. [2020-09-24 21:38:50,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 21:38:50,462 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 53 [2020-09-24 21:38:50,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:38:50,463 INFO L225 Difference]: With dead ends: 197 [2020-09-24 21:38:50,463 INFO L226 Difference]: Without dead ends: 194 [2020-09-24 21:38:50,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=317, Invalid=1015, Unknown=0, NotChecked=0, Total=1332 [2020-09-24 21:38:50,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-09-24 21:38:50,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 128. [2020-09-24 21:38:50,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-09-24 21:38:50,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 135 transitions. [2020-09-24 21:38:50,477 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 135 transitions. Word has length 53 [2020-09-24 21:38:50,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:38:50,477 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 135 transitions. [2020-09-24 21:38:50,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 21:38:50,478 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 135 transitions. [2020-09-24 21:38:50,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-24 21:38:50,479 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:50,479 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:38:50,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 21:38:50,479 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:50,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:50,481 INFO L82 PathProgramCache]: Analyzing trace with hash -2144912159, now seen corresponding path program 1 times [2020-09-24 21:38:50,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:50,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [332356785] [2020-09-24 21:38:50,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:50,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:50,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:50,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:51,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:51,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:51,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:52,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:53,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:55,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:55,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 21:38:55,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:38:55,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4631 [2020-09-24 21:38:55,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:55,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 21:38:55,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-24 21:38:55,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 21:38:55,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:56,112 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 67 [2020-09-24 21:38:56,338 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2020-09-24 21:38:56,707 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 56 [2020-09-24 21:38:57,069 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2020-09-24 21:38:57,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:38:57,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:57,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:57,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:38:57,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:38:57,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:38:57,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:38:57,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:38:57,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:38:57,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:38:57,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:38:57,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:38:57,718 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:38:57,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [332356785] [2020-09-24 21:38:57,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:38:57,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-24 21:38:57,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938561762] [2020-09-24 21:38:57,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-24 21:38:57,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:38:57,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-24 21:38:57,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2020-09-24 21:38:57,721 INFO L87 Difference]: Start difference. First operand 128 states and 135 transitions. Second operand 22 states. [2020-09-24 21:38:58,393 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 63 [2020-09-24 21:38:58,590 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2020-09-24 21:38:58,832 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 64 [2020-09-24 21:38:59,244 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 71 [2020-09-24 21:38:59,519 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 74 [2020-09-24 21:38:59,722 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 65 [2020-09-24 21:38:59,942 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-09-24 21:39:00,214 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2020-09-24 21:39:01,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:39:01,774 INFO L93 Difference]: Finished difference Result 177 states and 186 transitions. [2020-09-24 21:39:01,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-24 21:39:01,775 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 56 [2020-09-24 21:39:01,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:39:01,776 INFO L225 Difference]: With dead ends: 177 [2020-09-24 21:39:01,776 INFO L226 Difference]: Without dead ends: 175 [2020-09-24 21:39:01,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=318, Invalid=1752, Unknown=0, NotChecked=0, Total=2070 [2020-09-24 21:39:01,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-09-24 21:39:01,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 140. [2020-09-24 21:39:01,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-09-24 21:39:01,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 148 transitions. [2020-09-24 21:39:01,785 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 148 transitions. Word has length 56 [2020-09-24 21:39:01,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:39:01,786 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 148 transitions. [2020-09-24 21:39:01,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-24 21:39:01,786 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 148 transitions. [2020-09-24 21:39:01,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-24 21:39:01,787 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:39:01,787 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:39:01,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 21:39:01,787 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:39:01,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:39:01,788 INFO L82 PathProgramCache]: Analyzing trace with hash 64116920, now seen corresponding path program 1 times [2020-09-24 21:39:01,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:39:01,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959720206] [2020-09-24 21:39:01,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:39:01,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:01,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:01,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:03,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking...