/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=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-ext3-properties/sll_length_check-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:45:09,948 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:45:09,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:45:09,979 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:45:09,979 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:45:09,980 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:45:09,981 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:45:09,983 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:45:09,985 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:45:09,986 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:45:09,987 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:45:09,988 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:45:09,988 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:45:09,990 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:45:09,991 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:45:09,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:45:09,994 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:45:09,995 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:45:09,998 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:45:10,001 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:45:10,002 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:45:10,004 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:45:10,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:45:10,006 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:45:10,008 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:45:10,009 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:45:10,009 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:45:10,010 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:45:10,010 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:45:10,012 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:45:10,012 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:45:10,013 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:45:10,014 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:45:10,015 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:45:10,016 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:45:10,016 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:45:10,017 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:45:10,017 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:45:10,017 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:45:10,018 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:45:10,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:45:10,020 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 22:45:10,063 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:45:10,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:45:10,067 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:45:10,068 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:45:10,068 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:45:10,068 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:45:10,068 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:45:10,069 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:45:10,069 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:45:10,069 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:45:10,069 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:45:10,069 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:45:10,070 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:45:10,074 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:45:10,074 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:45:10,074 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:45:10,074 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:45:10,074 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:45:10,076 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:45:10,076 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:45:10,076 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:45:10,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:45:10,077 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:45:10,077 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:45:10,077 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:45:10,077 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:45:10,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:45:10,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:45:10,078 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:45:10,079 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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:45:10,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:45:10,577 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:45:10,582 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:45:10,584 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:45:10,584 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:45:10,586 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_length_check-1.i [2020-09-24 22:45:10,681 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d1fde4ff7/e37929b487c547639685a1661c70a2ef/FLAG3f18bb9c0 [2020-09-24 22:45:11,303 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:45:11,304 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/sll_length_check-1.i [2020-09-24 22:45:11,322 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d1fde4ff7/e37929b487c547639685a1661c70a2ef/FLAG3f18bb9c0 [2020-09-24 22:45:11,565 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d1fde4ff7/e37929b487c547639685a1661c70a2ef [2020-09-24 22:45:11,581 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:45:11,588 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:45:11,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:45:11,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:45:11,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:45:11,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:45:11" (1/1) ... [2020-09-24 22:45:11,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@592fd428 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:45:11, skipping insertion in model container [2020-09-24 22:45:11,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:45:11" (1/1) ... [2020-09-24 22:45:11,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:45:11,685 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:45:12,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:45:12,178 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:45:12,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:45:12,310 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:45:12,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:45:12 WrapperNode [2020-09-24 22:45:12,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:45:12,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:45:12,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:45:12,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:45:12,330 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:45:12" (1/1) ... [2020-09-24 22:45:12,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:45:12" (1/1) ... [2020-09-24 22:45:12,348 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:45:12" (1/1) ... [2020-09-24 22:45:12,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:45:12" (1/1) ... [2020-09-24 22:45:12,363 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:45:12" (1/1) ... [2020-09-24 22:45:12,369 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:45:12" (1/1) ... [2020-09-24 22:45:12,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:45:12" (1/1) ... [2020-09-24 22:45:12,379 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:45:12,379 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:45:12,380 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:45:12,380 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:45:12,381 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:45:12" (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 22:45:12,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:45:12,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:45:12,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-24 22:45:12,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-24 22:45:12,468 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-24 22:45:12,469 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-09-24 22:45:12,469 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-09-24 22:45:12,470 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-09-24 22:45:12,470 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:45:12,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:45:12,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:45:12,471 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-24 22:45:12,471 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-24 22:45:12,471 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 22:45:12,471 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 22:45:12,472 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 22:45:12,472 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 22:45:12,472 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 22:45:12,472 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 22:45:12,473 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 22:45:12,473 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 22:45:12,473 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 22:45:12,473 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 22:45:12,473 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 22:45:12,474 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 22:45:12,474 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 22:45:12,474 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 22:45:12,474 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 22:45:12,474 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 22:45:12,474 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 22:45:12,475 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 22:45:12,475 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 22:45:12,475 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 22:45:12,475 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 22:45:12,475 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 22:45:12,475 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 22:45:12,476 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 22:45:12,476 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 22:45:12,476 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 22:45:12,476 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 22:45:12,476 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 22:45:12,476 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 22:45:12,477 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 22:45:12,477 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 22:45:12,477 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 22:45:12,477 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 22:45:12,477 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 22:45:12,477 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 22:45:12,478 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 22:45:12,478 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 22:45:12,478 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 22:45:12,478 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 22:45:12,478 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 22:45:12,478 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 22:45:12,479 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 22:45:12,479 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 22:45:12,479 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 22:45:12,479 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 22:45:12,479 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 22:45:12,479 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 22:45:12,480 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 22:45:12,480 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 22:45:12,480 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 22:45:12,480 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 22:45:12,480 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 22:45:12,480 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 22:45:12,481 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 22:45:12,481 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-24 22:45:12,481 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 22:45:12,481 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 22:45:12,481 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 22:45:12,481 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-24 22:45:12,482 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 22:45:12,482 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 22:45:12,482 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-24 22:45:12,482 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 22:45:12,482 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 22:45:12,482 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-24 22:45:12,482 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 22:45:12,483 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 22:45:12,483 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 22:45:12,483 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 22:45:12,483 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 22:45:12,483 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 22:45:12,483 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 22:45:12,484 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 22:45:12,484 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 22:45:12,484 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 22:45:12,484 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 22:45:12,484 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 22:45:12,484 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 22:45:12,484 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 22:45:12,485 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 22:45:12,485 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 22:45:12,485 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 22:45:12,485 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 22:45:12,485 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 22:45:12,485 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 22:45:12,486 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 22:45:12,486 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 22:45:12,486 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 22:45:12,486 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 22:45:12,486 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 22:45:12,486 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 22:45:12,486 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 22:45:12,486 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 22:45:12,487 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 22:45:12,487 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 22:45:12,487 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 22:45:12,487 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 22:45:12,487 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 22:45:12,487 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 22:45:12,487 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 22:45:12,487 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 22:45:12,488 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 22:45:12,488 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 22:45:12,488 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-24 22:45:12,488 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-09-24 22:45:12,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 22:45:12,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 22:45:12,489 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-09-24 22:45:12,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 22:45:12,489 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-09-24 22:45:12,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 22:45:12,489 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:45:12,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:45:12,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:45:12,881 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-24 22:45:13,049 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:45:13,049 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-24 22:45:13,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:45:13 BoogieIcfgContainer [2020-09-24 22:45:13,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:45:13,058 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:45:13,059 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:45:13,062 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:45:13,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:45:11" (1/3) ... [2020-09-24 22:45:13,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dcd59df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:45:13, skipping insertion in model container [2020-09-24 22:45:13,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:45:12" (2/3) ... [2020-09-24 22:45:13,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dcd59df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:45:13, skipping insertion in model container [2020-09-24 22:45:13,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:45:13" (3/3) ... [2020-09-24 22:45:13,067 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_length_check-1.i [2020-09-24 22:45:13,079 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:45:13,089 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:45:13,111 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:45:13,143 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:45:13,143 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:45:13,144 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:45:13,144 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:45:13,144 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:45:13,144 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:45:13,144 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:45:13,144 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:45:13,168 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states. [2020-09-24 22:45:13,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-24 22:45:13,177 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:13,178 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] [2020-09-24 22:45:13,179 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:13,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:13,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1731717969, now seen corresponding path program 1 times [2020-09-24 22:45:13,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:13,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679511617] [2020-09-24 22:45:13,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:13,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:13,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:13,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:13,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:13,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 22:45:13,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:45:13,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 412 [2020-09-24 22:45:13,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:13,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:13,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 22:45:13,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:13,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 22:45:13,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:13,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:13,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:13,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:13,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:13,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:13,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 22:45:13,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:13,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:13,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:13,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:13,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:45:13,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 22:45:13,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:13,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:13,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:13,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:45:13,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:13,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-24 22:45:13,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:13,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:13,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 22:45:13,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:13,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:13,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-24 22:45:13,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:13,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:13,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:13,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:45:14,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:14,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 22:45:14,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:14,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:14,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 22:45:14,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:14,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:14,015 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 22:45:14,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679511617] [2020-09-24 22:45:14,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:45:14,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 22:45:14,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086988303] [2020-09-24 22:45:14,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 22:45:14,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:14,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 22:45:14,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 22:45:14,053 INFO L87 Difference]: Start difference. First operand 75 states. Second operand 4 states. [2020-09-24 22:45:14,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:14,297 INFO L93 Difference]: Finished difference Result 154 states and 184 transitions. [2020-09-24 22:45:14,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 22:45:14,300 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-09-24 22:45:14,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:14,312 INFO L225 Difference]: With dead ends: 154 [2020-09-24 22:45:14,313 INFO L226 Difference]: Without dead ends: 68 [2020-09-24 22:45:14,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:45:14,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-24 22:45:14,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 55. [2020-09-24 22:45:14,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-24 22:45:14,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2020-09-24 22:45:14,381 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 29 [2020-09-24 22:45:14,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:14,381 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2020-09-24 22:45:14,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 22:45:14,382 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2020-09-24 22:45:14,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 22:45:14,383 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:14,384 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:45:14,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:45:14,384 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:14,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:14,385 INFO L82 PathProgramCache]: Analyzing trace with hash 632987872, now seen corresponding path program 1 times [2020-09-24 22:45:14,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:14,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403645939] [2020-09-24 22:45:14,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:14,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:14,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:14,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:14,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:14,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:14,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:14,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:14,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 22:45:14,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:45:14,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 557 [2020-09-24 22:45:14,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:14,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:45:14,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 22:45:14,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 22:45:14,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:15,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:15,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:15,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:15,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:15,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:15,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:15,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:45:15,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:15,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:15,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:15,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:15,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 22:45:15,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-24 22:45:15,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:15,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:15,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:15,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:45:15,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:15,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-24 22:45:15,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:15,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:45:15,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:45:15,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:45:15,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:15,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 22:45:15,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:15,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:15,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:15,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:45:15,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:15,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 22:45:15,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:15,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:15,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 22:45:15,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:15,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:45:15,159 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 22:45:15,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1403645939] [2020-09-24 22:45:15,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:45:15,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 22:45:15,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295809237] [2020-09-24 22:45:15,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 22:45:15,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:15,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 22:45:15,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 22:45:15,165 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand 8 states. [2020-09-24 22:45:15,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:15,622 INFO L93 Difference]: Finished difference Result 110 states and 117 transitions. [2020-09-24 22:45:15,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 22:45:15,624 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-09-24 22:45:15,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:15,626 INFO L225 Difference]: With dead ends: 110 [2020-09-24 22:45:15,626 INFO L226 Difference]: Without dead ends: 90 [2020-09-24 22:45:15,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-24 22:45:15,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-24 22:45:15,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 63. [2020-09-24 22:45:15,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-24 22:45:15,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2020-09-24 22:45:15,657 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 33 [2020-09-24 22:45:15,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:15,657 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2020-09-24 22:45:15,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 22:45:15,658 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2020-09-24 22:45:15,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 22:45:15,662 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:15,662 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:45:15,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:45:15,664 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:15,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:15,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1134974621, now seen corresponding path program 1 times [2020-09-24 22:45:15,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:15,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129036809] [2020-09-24 22:45:15,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:15,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:15,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:15,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:15,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 22:45:15,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:15,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-24 22:45:15,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:15,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:45:15,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 22:45:15,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 22:45:15,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:15,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:15,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:15,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:15,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:15,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:15,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:15,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:45:15,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:15,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:15,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:15,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:15,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:15,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 22:45:15,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:15,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:15,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:15,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:45:15,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:15,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 22:45:15,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:15,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:45:15,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:45:15,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:45:15,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:15,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 22:45:15,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:15,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:15,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:15,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:45:15,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:15,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 22:45:15,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:15,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:15,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 22:45:15,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:15,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:15,943 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 22:45:15,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129036809] [2020-09-24 22:45:15,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:45:15,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 22:45:15,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483681380] [2020-09-24 22:45:15,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 22:45:15,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:15,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 22:45:15,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:45:15,951 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand 7 states. [2020-09-24 22:45:16,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:16,276 INFO L93 Difference]: Finished difference Result 122 states and 134 transitions. [2020-09-24 22:45:16,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 22:45:16,277 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-24 22:45:16,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:16,281 INFO L225 Difference]: With dead ends: 122 [2020-09-24 22:45:16,281 INFO L226 Difference]: Without dead ends: 102 [2020-09-24 22:45:16,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:45:16,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-24 22:45:16,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 67. [2020-09-24 22:45:16,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-24 22:45:16,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 74 transitions. [2020-09-24 22:45:16,294 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 74 transitions. Word has length 35 [2020-09-24 22:45:16,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:16,294 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 74 transitions. [2020-09-24 22:45:16,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 22:45:16,295 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 74 transitions. [2020-09-24 22:45:16,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-24 22:45:16,296 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:16,296 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:45:16,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:45:16,297 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:16,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:16,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1545332509, now seen corresponding path program 1 times [2020-09-24 22:45:16,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:16,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128450416] [2020-09-24 22:45:16,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:16,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:16,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:16,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:16,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:16,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:17,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:17,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:19,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:21,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:21,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 22:45:21,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 22:45:21,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 22:45:21,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:21,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:45:21,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-24 22:45:21,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 22:45:21,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:21,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:21,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:21,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:21,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:21,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:21,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:21,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:45:21,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:21,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:21,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:21,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:21,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:21,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-24 22:45:21,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:21,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:21,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:21,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:21,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 22:45:21,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:45:21,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-09-24 22:45:21,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:21,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:45:21,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:21,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 22:45:21,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:21,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-09-24 22:45:21,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:21,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:21,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:21,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:45:21,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:21,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 22:45:21,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:21,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:45:21,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:45:21,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:45:21,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:21,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:45:21,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128450416] [2020-09-24 22:45:21,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:45:21,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 22:45:21,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348936468] [2020-09-24 22:45:21,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 22:45:21,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:21,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 22:45:21,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:45:21,752 INFO L87 Difference]: Start difference. First operand 67 states and 74 transitions. Second operand 11 states. [2020-09-24 22:45:22,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:22,249 INFO L93 Difference]: Finished difference Result 94 states and 102 transitions. [2020-09-24 22:45:22,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 22:45:22,250 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 42 [2020-09-24 22:45:22,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:22,251 INFO L225 Difference]: With dead ends: 94 [2020-09-24 22:45:22,251 INFO L226 Difference]: Without dead ends: 89 [2020-09-24 22:45:22,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-09-24 22:45:22,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-09-24 22:45:22,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 74. [2020-09-24 22:45:22,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-24 22:45:22,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2020-09-24 22:45:22,263 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 42 [2020-09-24 22:45:22,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:22,264 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2020-09-24 22:45:22,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 22:45:22,264 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2020-09-24 22:45:22,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-24 22:45:22,266 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:22,266 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:45:22,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:45:22,266 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:22,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:22,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1544593977, now seen corresponding path program 1 times [2020-09-24 22:45:22,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:22,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914853594] [2020-09-24 22:45:22,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:22,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:22,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:22,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:22,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:22,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:22,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:23,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:23,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 22:45:23,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:45:23,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 744 [2020-09-24 22:45:23,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:23,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:45:23,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 22:45:23,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 22:45:23,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:45:23,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:23,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:23,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:23,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:23,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:23,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:23,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:45:23,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:23,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:23,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:23,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:23,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:23,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 22:45:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:23,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:23,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:23,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:45:23,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:23,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:45:23,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:23,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:23,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 22:45:23,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:23,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:23,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-24 22:45:23,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:23,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:23,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:23,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:45:23,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:23,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:45:23,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:23,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:23,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 22:45:23,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:23,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:23,100 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:45:23,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914853594] [2020-09-24 22:45:23,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:45:23,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:45:23,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980453721] [2020-09-24 22:45:23,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:45:23,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:23,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:45:23,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:45:23,103 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand 5 states. [2020-09-24 22:45:23,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:23,287 INFO L93 Difference]: Finished difference Result 143 states and 160 transitions. [2020-09-24 22:45:23,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 22:45:23,287 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-09-24 22:45:23,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:23,288 INFO L225 Difference]: With dead ends: 143 [2020-09-24 22:45:23,288 INFO L226 Difference]: Without dead ends: 81 [2020-09-24 22:45:23,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:45:23,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-24 22:45:23,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 75. [2020-09-24 22:45:23,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-24 22:45:23,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 84 transitions. [2020-09-24 22:45:23,312 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 84 transitions. Word has length 43 [2020-09-24 22:45:23,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:23,313 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 84 transitions. [2020-09-24 22:45:23,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:45:23,313 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 84 transitions. [2020-09-24 22:45:23,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-24 22:45:23,318 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:23,318 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:45:23,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 22:45:23,319 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:23,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:23,319 INFO L82 PathProgramCache]: Analyzing trace with hash -829611268, now seen corresponding path program 1 times [2020-09-24 22:45:23,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:23,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319673709] [2020-09-24 22:45:23,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:23,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:23,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:23,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 22:45:23,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:23,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-24 22:45:23,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:23,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:45:23,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 22:45:23,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 22:45:23,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:23,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:23,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:23,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:23,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:23,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:23,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:45:23,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:23,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:23,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:23,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:23,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:23,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 22:45:23,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:23,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:23,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:23,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:45:23,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:23,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 22:45:23,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:23,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:45:23,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:45:23,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:45:23,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:23,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 22:45:23,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:23,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:23,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:23,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:45:23,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:23,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:45:23,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:23,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:23,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 22:45:23,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:23,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:23,621 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 22:45:23,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319673709] [2020-09-24 22:45:23,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:45:23,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 22:45:23,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164234181] [2020-09-24 22:45:23,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:45:23,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:23,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:45:23,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:45:23,624 INFO L87 Difference]: Start difference. First operand 75 states and 84 transitions. Second operand 9 states. [2020-09-24 22:45:24,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:24,233 INFO L93 Difference]: Finished difference Result 152 states and 167 transitions. [2020-09-24 22:45:24,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 22:45:24,233 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-09-24 22:45:24,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:24,235 INFO L225 Difference]: With dead ends: 152 [2020-09-24 22:45:24,235 INFO L226 Difference]: Without dead ends: 128 [2020-09-24 22:45:24,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-09-24 22:45:24,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-09-24 22:45:24,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 85. [2020-09-24 22:45:24,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-24 22:45:24,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2020-09-24 22:45:24,251 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 45 [2020-09-24 22:45:24,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:24,251 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2020-09-24 22:45:24,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:45:24,251 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2020-09-24 22:45:24,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-24 22:45:24,252 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:24,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:45:24,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 22:45:24,253 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:24,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:24,254 INFO L82 PathProgramCache]: Analyzing trace with hash -885856494, now seen corresponding path program 1 times [2020-09-24 22:45:24,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:24,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866661197] [2020-09-24 22:45:24,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:24,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:24,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:24,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:24,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:24,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:24,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:25,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:25,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 22:45:25,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:45:25,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 744 [2020-09-24 22:45:25,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:25,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:45:25,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 22:45:25,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 22:45:25,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:45:25,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:25,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:25,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:25,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:25,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:25,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:45:25,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:25,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:25,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:25,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:25,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:45:25,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-24 22:45:25,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:25,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:25,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:25,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 22:45:25,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:25,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-24 22:45:25,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:25,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:45:25,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:45:25,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 22:45:25,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:25,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-09-24 22:45:25,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:25,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:25,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:25,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 22:45:25,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:25,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 22:45:25,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:25,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:25,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 22:45:25,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:25,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:45:25,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 22:45:25,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1866661197] [2020-09-24 22:45:25,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:45:25,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 22:45:25,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077323839] [2020-09-24 22:45:25,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 22:45:25,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:25,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 22:45:25,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-24 22:45:25,238 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand 10 states. [2020-09-24 22:45:25,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:25,732 INFO L93 Difference]: Finished difference Result 144 states and 158 transitions. [2020-09-24 22:45:25,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 22:45:25,732 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 49 [2020-09-24 22:45:25,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:25,734 INFO L225 Difference]: With dead ends: 144 [2020-09-24 22:45:25,734 INFO L226 Difference]: Without dead ends: 120 [2020-09-24 22:45:25,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-09-24 22:45:25,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-09-24 22:45:25,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 100. [2020-09-24 22:45:25,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-09-24 22:45:25,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2020-09-24 22:45:25,748 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 49 [2020-09-24 22:45:25,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:25,748 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2020-09-24 22:45:25,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 22:45:25,748 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2020-09-24 22:45:25,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 22:45:25,750 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:25,750 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:45:25,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 22:45:25,750 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:25,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:25,751 INFO L82 PathProgramCache]: Analyzing trace with hash -642872939, now seen corresponding path program 1 times [2020-09-24 22:45:25,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:25,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982704174] [2020-09-24 22:45:25,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:25,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:25,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:25,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:25,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-24 22:45:25,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:25,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-09-24 22:45:25,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:25,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:45:25,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 22:45:25,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 22:45:25,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:25,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:25,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:25,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:25,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:25,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:25,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:25,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:45:25,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:25,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:25,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:25,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:25,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:25,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 22:45:25,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:25,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:26,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:26,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 22:45:26,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:26,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-24 22:45:26,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:26,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:45:26,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:45:26,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 22:45:26,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:26,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-24 22:45:26,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:26,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:26,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:26,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 22:45:26,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:26,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:45:26,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:26,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:26,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 22:45:26,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:26,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:26,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 22:45:26,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982704174] [2020-09-24 22:45:26,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:45:26,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 22:45:26,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175492531] [2020-09-24 22:45:26,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:45:26,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:26,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:45:26,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:45:26,096 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 9 states. [2020-09-24 22:45:26,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:26,517 INFO L93 Difference]: Finished difference Result 151 states and 167 transitions. [2020-09-24 22:45:26,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 22:45:26,518 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-09-24 22:45:26,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:26,520 INFO L225 Difference]: With dead ends: 151 [2020-09-24 22:45:26,521 INFO L226 Difference]: Without dead ends: 127 [2020-09-24 22:45:26,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-09-24 22:45:26,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-09-24 22:45:26,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 100. [2020-09-24 22:45:26,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-09-24 22:45:26,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2020-09-24 22:45:26,541 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 51 [2020-09-24 22:45:26,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:26,542 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2020-09-24 22:45:26,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:45:26,542 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2020-09-24 22:45:26,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-24 22:45:26,543 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:26,544 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:45:26,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 22:45:26,544 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:26,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:26,545 INFO L82 PathProgramCache]: Analyzing trace with hash 304886101, now seen corresponding path program 2 times [2020-09-24 22:45:26,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:26,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [734849169] [2020-09-24 22:45:26,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:26,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:26,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:26,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:26,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-24 22:45:26,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:26,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-09-24 22:45:26,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:26,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:45:26,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 22:45:26,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 22:45:26,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:26,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:26,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:26,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:26,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:26,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:26,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:26,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:45:26,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:26,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:26,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:26,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:26,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:45:26,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-24 22:45:26,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:26,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:26,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:26,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:45:26,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:26,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 22:45:26,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:26,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:45:26,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:45:26,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:45:26,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:26,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-24 22:45:26,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:26,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:26,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:26,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:45:26,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:26,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:45:26,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:26,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:26,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 22:45:26,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:26,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:26,896 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:45:26,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [734849169] [2020-09-24 22:45:26,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:45:26,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 22:45:26,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569592620] [2020-09-24 22:45:26,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 22:45:26,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:26,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 22:45:26,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:45:26,905 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 11 states. [2020-09-24 22:45:27,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:27,645 INFO L93 Difference]: Finished difference Result 149 states and 164 transitions. [2020-09-24 22:45:27,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 22:45:27,646 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 55 [2020-09-24 22:45:27,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:27,648 INFO L225 Difference]: With dead ends: 149 [2020-09-24 22:45:27,648 INFO L226 Difference]: Without dead ends: 119 [2020-09-24 22:45:27,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2020-09-24 22:45:27,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-09-24 22:45:27,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 78. [2020-09-24 22:45:27,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-24 22:45:27,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 85 transitions. [2020-09-24 22:45:27,683 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 85 transitions. Word has length 55 [2020-09-24 22:45:27,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:27,683 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 85 transitions. [2020-09-24 22:45:27,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 22:45:27,683 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 85 transitions. [2020-09-24 22:45:27,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 22:45:27,685 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:27,685 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:45:27,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 22:45:27,686 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:27,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:27,686 INFO L82 PathProgramCache]: Analyzing trace with hash -893250737, now seen corresponding path program 2 times [2020-09-24 22:45:27,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:27,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252792865] [2020-09-24 22:45:27,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:27,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:27,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:27,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:27,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:27,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:28,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:28,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:29,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:32,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:32,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 22:45:32,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 22:45:32,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-24 22:45:32,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:32,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 22:45:32,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-24 22:45:32,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 22:45:32,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:32,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:32,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:32,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:32,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:32,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:32,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:32,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:45:32,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:32,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:32,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:32,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:32,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:45:32,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-24 22:45:32,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:32,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:32,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:33,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:33,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 22:45:33,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:45:33,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-09-24 22:45:33,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:33,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:45:33,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:33,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 22:45:33,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 26 [2020-09-24 22:45:33,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 22:45:33,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:33,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:33,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:33,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 22:45:33,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:33,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 22:45:33,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:33,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:45:33,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:45:33,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:45:33,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:33,408 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:45:33,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252792865] [2020-09-24 22:45:33,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:45:33,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 22:45:33,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040889635] [2020-09-24 22:45:33,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 22:45:33,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:33,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 22:45:33,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-09-24 22:45:33,412 INFO L87 Difference]: Start difference. First operand 78 states and 85 transitions. Second operand 15 states. [2020-09-24 22:45:34,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:34,353 INFO L93 Difference]: Finished difference Result 111 states and 119 transitions. [2020-09-24 22:45:34,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 22:45:34,354 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 58 [2020-09-24 22:45:34,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:34,355 INFO L225 Difference]: With dead ends: 111 [2020-09-24 22:45:34,355 INFO L226 Difference]: Without dead ends: 106 [2020-09-24 22:45:34,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2020-09-24 22:45:34,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-24 22:45:34,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 91. [2020-09-24 22:45:34,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-24 22:45:34,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2020-09-24 22:45:34,373 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 58 [2020-09-24 22:45:34,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:34,374 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2020-09-24 22:45:34,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 22:45:34,374 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2020-09-24 22:45:34,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-24 22:45:34,375 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:34,375 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:45:34,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 22:45:34,375 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:34,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:34,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1521110738, now seen corresponding path program 1 times [2020-09-24 22:45:34,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:34,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635693604] [2020-09-24 22:45:34,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:34,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:34,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:34,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:34,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-24 22:45:34,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:34,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-09-24 22:45:34,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:34,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:45:34,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 22:45:34,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 22:45:34,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:34,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:34,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:34,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:34,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:34,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:34,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:34,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:45:34,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:34,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:34,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:34,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:34,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:34,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 22:45:34,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:34,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:34,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:34,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 22:45:34,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:34,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-24 22:45:34,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:34,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:45:34,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:45:34,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 22:45:34,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:45:34,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-24 22:45:34,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:34,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:34,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:34,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 22:45:34,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:34,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:45:34,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:34,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:34,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 22:45:34,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:34,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:34,830 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 22:45:34,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635693604] [2020-09-24 22:45:34,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:45:34,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 22:45:34,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132625419] [2020-09-24 22:45:34,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 22:45:34,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:34,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 22:45:34,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:45:34,833 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand 11 states. [2020-09-24 22:45:35,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:35,320 INFO L93 Difference]: Finished difference Result 142 states and 151 transitions. [2020-09-24 22:45:35,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 22:45:35,323 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 61 [2020-09-24 22:45:35,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:35,324 INFO L225 Difference]: With dead ends: 142 [2020-09-24 22:45:35,324 INFO L226 Difference]: Without dead ends: 105 [2020-09-24 22:45:35,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2020-09-24 22:45:35,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-09-24 22:45:35,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 74. [2020-09-24 22:45:35,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-24 22:45:35,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2020-09-24 22:45:35,334 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 61 [2020-09-24 22:45:35,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:35,335 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2020-09-24 22:45:35,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 22:45:35,335 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2020-09-24 22:45:35,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-24 22:45:35,338 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:35,338 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:45:35,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 22:45:35,339 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:35,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:35,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1283588448, now seen corresponding path program 3 times [2020-09-24 22:45:35,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:35,339 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094927219] [2020-09-24 22:45:35,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:35,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:35,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:35,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:35,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:35,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:35,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:36,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:38,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:38,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 22:45:38,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 22:45:38,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3595 [2020-09-24 22:45:38,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:38,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 22:45:38,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 22:45:38,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:45:38,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:38,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:38,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:38,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:38,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:38,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:38,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:38,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:45:38,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:38,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:38,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:38,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:38,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:39,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-24 22:45:39,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:39,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:39,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:39,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 22:45:39,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:39,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-24 22:45:39,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:39,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:45:39,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:45:39,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 22:45:39,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:39,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 22:45:39,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:39,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:39,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:39,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 22:45:39,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:39,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 22:45:39,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:39,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:39,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 22:45:39,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:39,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:45:39,276 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 22:45:39,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094927219] [2020-09-24 22:45:39,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:45:39,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 22:45:39,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597039431] [2020-09-24 22:45:39,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 22:45:39,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:39,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 22:45:39,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-09-24 22:45:39,278 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand 12 states. [2020-09-24 22:45:39,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:39,693 INFO L93 Difference]: Finished difference Result 132 states and 138 transitions. [2020-09-24 22:45:39,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 22:45:39,694 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 65 [2020-09-24 22:45:39,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:39,695 INFO L225 Difference]: With dead ends: 132 [2020-09-24 22:45:39,695 INFO L226 Difference]: Without dead ends: 104 [2020-09-24 22:45:39,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-09-24 22:45:39,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-09-24 22:45:39,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 89. [2020-09-24 22:45:39,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-09-24 22:45:39,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 94 transitions. [2020-09-24 22:45:39,709 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 94 transitions. Word has length 65 [2020-09-24 22:45:39,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:39,710 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 94 transitions. [2020-09-24 22:45:39,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 22:45:39,710 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 94 transitions. [2020-09-24 22:45:39,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-24 22:45:39,711 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:39,711 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:45:39,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 22:45:39,712 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:39,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:39,712 INFO L82 PathProgramCache]: Analyzing trace with hash 828521251, now seen corresponding path program 2 times [2020-09-24 22:45:39,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:39,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663307063] [2020-09-24 22:45:39,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:39,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:39,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:39,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:40,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:40,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 22:45:40,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:45:40,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1155 [2020-09-24 22:45:40,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:40,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 22:45:40,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 22:45:40,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 22:45:40,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:45:40,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:40,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:40,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:40,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:40,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:40,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:40,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:45:40,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:40,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:40,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:40,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:40,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:40,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 22:45:40,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:40,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:41,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:41,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:41,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 22:45:41,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:45:41,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-24 22:45:41,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:41,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:45:41,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:45:41,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 22:45:41,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:45:41,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-24 22:45:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:41,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:41,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:41,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 22:45:41,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:41,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-24 22:45:41,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:41,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 22:45:41,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:41,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 22:45:41,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:45:41,560 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:45:41,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [663307063] [2020-09-24 22:45:41,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:45:41,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-24 22:45:41,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154907234] [2020-09-24 22:45:41,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 22:45:41,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:41,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 22:45:41,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2020-09-24 22:45:41,565 INFO L87 Difference]: Start difference. First operand 89 states and 94 transitions. Second operand 18 states. [2020-09-24 22:45:42,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:42,486 INFO L93 Difference]: Finished difference Result 162 states and 174 transitions. [2020-09-24 22:45:42,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-24 22:45:42,486 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 67 [2020-09-24 22:45:42,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:42,488 INFO L225 Difference]: With dead ends: 162 [2020-09-24 22:45:42,488 INFO L226 Difference]: Without dead ends: 132 [2020-09-24 22:45:42,490 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=149, Invalid=1041, Unknown=0, NotChecked=0, Total=1190 [2020-09-24 22:45:42,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-09-24 22:45:42,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 111. [2020-09-24 22:45:42,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-09-24 22:45:42,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 121 transitions. [2020-09-24 22:45:42,506 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 121 transitions. Word has length 67 [2020-09-24 22:45:42,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:42,507 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 121 transitions. [2020-09-24 22:45:42,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 22:45:42,507 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 121 transitions. [2020-09-24 22:45:42,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-09-24 22:45:42,508 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:42,508 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:45:42,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 22:45:42,509 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:42,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:42,509 INFO L82 PathProgramCache]: Analyzing trace with hash -446623556, now seen corresponding path program 2 times [2020-09-24 22:45:42,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:42,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [355821894] [2020-09-24 22:45:42,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:42,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:42,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:42,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:42,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 22:45:42,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:42,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-09-24 22:45:42,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:42,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 22:45:42,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 22:45:42,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 22:45:42,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:42,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:42,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:42,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:42,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:42,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:42,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:45:42,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:42,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:42,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:42,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:42,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:42,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 22:45:42,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:42,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:43,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:43,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 22:45:43,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:43,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-24 22:45:43,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:43,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:45:43,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:45:43,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 22:45:43,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:43,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-24 22:45:43,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:43,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:43,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:43,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 22:45:43,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:43,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 22:45:43,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:43,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:43,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 22:45:43,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:43,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:43,204 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 22:45:43,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [355821894] [2020-09-24 22:45:43,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:45:43,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 22:45:43,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262065479] [2020-09-24 22:45:43,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 22:45:43,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:43,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 22:45:43,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-09-24 22:45:43,206 INFO L87 Difference]: Start difference. First operand 111 states and 121 transitions. Second operand 13 states. [2020-09-24 22:45:43,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:43,830 INFO L93 Difference]: Finished difference Result 165 states and 175 transitions. [2020-09-24 22:45:43,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 22:45:43,831 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 77 [2020-09-24 22:45:43,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:43,832 INFO L225 Difference]: With dead ends: 165 [2020-09-24 22:45:43,833 INFO L226 Difference]: Without dead ends: 124 [2020-09-24 22:45:43,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2020-09-24 22:45:43,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-09-24 22:45:43,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 105. [2020-09-24 22:45:43,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-09-24 22:45:43,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 113 transitions. [2020-09-24 22:45:43,843 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 113 transitions. Word has length 77 [2020-09-24 22:45:43,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:43,843 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 113 transitions. [2020-09-24 22:45:43,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 22:45:43,844 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 113 transitions. [2020-09-24 22:45:43,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-24 22:45:43,845 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:43,845 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:45:43,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 22:45:43,846 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:43,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:43,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1699824978, now seen corresponding path program 4 times [2020-09-24 22:45:43,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:43,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226771851] [2020-09-24 22:45:43,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:43,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:43,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:43,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:44,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:44,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:45,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:45,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 22:45:45,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:45:45,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1450 [2020-09-24 22:45:45,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:45,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 22:45:45,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 22:45:45,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 22:45:45,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:45,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:45,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:45,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:45,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:45,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:45,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:45,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:45:45,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:45,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:45,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:45,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:45,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:45,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-09-24 22:45:45,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:45,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:45,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:45,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 22:45:45,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:45,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-09-24 22:45:45,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:45,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 22:45:45,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:45:45,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 22:45:45,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:45,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-24 22:45:45,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:45,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:45,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:45,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:45:45,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:45,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 22:45:45,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:45,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:45,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 22:45:45,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:45,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:45,748 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-24 22:45:45,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226771851] [2020-09-24 22:45:45,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:45:45,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 22:45:45,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943293764] [2020-09-24 22:45:45,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 22:45:45,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:45,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 22:45:45,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-09-24 22:45:45,752 INFO L87 Difference]: Start difference. First operand 105 states and 113 transitions. Second operand 14 states. [2020-09-24 22:45:46,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:46,270 INFO L93 Difference]: Finished difference Result 182 states and 200 transitions. [2020-09-24 22:45:46,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 22:45:46,270 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 81 [2020-09-24 22:45:46,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:46,272 INFO L225 Difference]: With dead ends: 182 [2020-09-24 22:45:46,272 INFO L226 Difference]: Without dead ends: 141 [2020-09-24 22:45:46,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2020-09-24 22:45:46,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-09-24 22:45:46,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 123. [2020-09-24 22:45:46,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-09-24 22:45:46,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 135 transitions. [2020-09-24 22:45:46,284 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 135 transitions. Word has length 81 [2020-09-24 22:45:46,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:46,284 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 135 transitions. [2020-09-24 22:45:46,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 22:45:46,284 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 135 transitions. [2020-09-24 22:45:46,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-24 22:45:46,286 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:46,286 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:45:46,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-24 22:45:46,286 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:46,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:46,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1305863211, now seen corresponding path program 3 times [2020-09-24 22:45:46,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:46,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698751136] [2020-09-24 22:45:46,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:46,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 22:45:46,308 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 22:45:46,309 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 22:45:46,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-24 22:45:46,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 10:45:46 BoogieIcfgContainer [2020-09-24 22:45:46,337 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 22:45:46,340 INFO L168 Benchmark]: Toolchain (without parser) took 34756.31 ms. Allocated memory was 136.8 MB in the beginning and 475.5 MB in the end (delta: 338.7 MB). Free memory was 98.7 MB in the beginning and 123.0 MB in the end (delta: -24.3 MB). Peak memory consumption was 314.4 MB. Max. memory is 7.1 GB. [2020-09-24 22:45:46,341 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 136.8 MB. Free memory was 118.4 MB in the beginning and 118.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 22:45:46,342 INFO L168 Benchmark]: CACSL2BoogieTranslator took 719.92 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 98.1 MB in the beginning and 167.3 MB in the end (delta: -69.2 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. [2020-09-24 22:45:46,342 INFO L168 Benchmark]: Boogie Preprocessor took 67.03 ms. Allocated memory is still 200.3 MB. Free memory was 166.6 MB in the beginning and 164.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-09-24 22:45:46,343 INFO L168 Benchmark]: RCFGBuilder took 677.26 ms. Allocated memory is still 200.3 MB. Free memory was 164.5 MB in the beginning and 118.5 MB in the end (delta: 46.0 MB). Peak memory consumption was 46.0 MB. Max. memory is 7.1 GB. [2020-09-24 22:45:46,344 INFO L168 Benchmark]: TraceAbstraction took 33278.77 ms. Allocated memory was 200.3 MB in the beginning and 475.5 MB in the end (delta: 275.3 MB). Free memory was 117.8 MB in the beginning and 123.0 MB in the end (delta: -5.2 MB). Peak memory consumption was 270.0 MB. Max. memory is 7.1 GB. [2020-09-24 22:45:46,347 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 136.8 MB. Free memory was 118.4 MB in the beginning and 118.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 719.92 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 98.1 MB in the beginning and 167.3 MB in the end (delta: -69.2 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.03 ms. Allocated memory is still 200.3 MB. Free memory was 166.6 MB in the beginning and 164.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 677.26 ms. Allocated memory is still 200.3 MB. Free memory was 164.5 MB in the beginning and 118.5 MB in the end (delta: 46.0 MB). Peak memory consumption was 46.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 33278.77 ms. Allocated memory was 200.3 MB in the beginning and 475.5 MB in the end (delta: 275.3 MB). Free memory was 117.8 MB in the beginning and 123.0 MB in the end (delta: -5.2 MB). Peak memory consumption was 270.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 602]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L592] int len = 2; [L593] len < 32 && __VERIFIER_nondet_int() [L593] len < 32 && __VERIFIER_nondet_int() [L593] COND FALSE !(len < 32 && __VERIFIER_nondet_int()) [L596] CALL, EXPR sll_create(len + 1) [L564] SLL head = ((void *)0); [L565] COND TRUE len > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] new_head->next = head [L571] head = new_head [L572] len-- [L565] COND TRUE len > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] new_head->next = head [L571] head = new_head [L572] len-- [L565] COND TRUE len > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] new_head->next = head [L571] head = new_head [L572] len-- [L565] COND FALSE !(len > 0) [L574] return head; [L596] RET, EXPR sll_create(len + 1) [L596] SLL s = sll_create(len + 1); [L597] CALL, EXPR sll_length(s) [L577] int len = 0; [L578] COND TRUE \read(head) [L579] len++ [L580] EXPR head->next [L580] head = head->next [L578] COND TRUE \read(head) [L579] len++ [L580] EXPR head->next [L580] head = head->next [L578] COND TRUE \read(head) [L579] len++ [L580] EXPR head->next [L580] head = head->next [L578] COND FALSE !(\read(head)) [L582] return len; [L597] RET, EXPR sll_length(s) [L597] COND TRUE len != sll_length(s) [L602] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 86 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 33.1s, OverallIterations: 16, TraceHistogramMax: 3, AutomataDifference: 7.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 924 SDtfs, 1849 SDslu, 2363 SDs, 0 SdLazy, 5007 SolverSat, 294 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 342 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=123occurred in iteration=15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 15 MinimizatonAttempts, 346 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 24.2s InterpolantComputationTime, 874 NumberOfCodeBlocks, 874 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 776 ConstructedInterpolants, 0 QuantifiedInterpolants, 139150 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 5 PerfectInterpolantSequences, 70/171 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...