/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-ext2-properties/list_and_tree_cnstr-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:44:53,451 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:44:53,455 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:44:53,485 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:44:53,485 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:44:53,493 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:44:53,495 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:44:53,497 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:44:53,500 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:44:53,500 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:44:53,502 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:44:53,504 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:44:53,504 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:44:53,505 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:44:53,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:44:53,510 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:44:53,512 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:44:53,515 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:44:53,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:44:53,523 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:44:53,525 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:44:53,527 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:44:53,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:44:53,529 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:44:53,541 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:44:53,541 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:44:53,541 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:44:53,542 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:44:53,545 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:44:53,546 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:44:53,547 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:44:53,547 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:44:53,548 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:44:53,550 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:44:53,551 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:44:53,551 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:44:53,552 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:44:53,552 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:44:53,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:44:53,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:44:53,555 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:44:53,556 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 22:44:53,607 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:44:53,608 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:44:53,610 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:44:53,610 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:44:53,611 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:44:53,611 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:44:53,611 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:44:53,611 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:44:53,612 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:44:53,612 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:44:53,613 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:44:53,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:44:53,613 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:44:53,614 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:44:53,614 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:44:53,614 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:44:53,614 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:44:53,615 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:44:53,615 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:44:53,615 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:44:53,615 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:44:53,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:44:53,616 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:44:53,616 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:44:53,616 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:44:53,616 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:44:53,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:44:53,617 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:44:53,617 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:44:53,617 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 22:44:54,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:44:54,111 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:44:54,116 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:44:54,117 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:44:54,118 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:44:54,119 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i [2020-09-24 22:44:54,216 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e342d13bb/ce27f88ea8b54a2eba19d468d9ff0afa/FLAGabd3a6cd3 [2020-09-24 22:44:54,860 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:44:54,861 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i [2020-09-24 22:44:54,878 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e342d13bb/ce27f88ea8b54a2eba19d468d9ff0afa/FLAGabd3a6cd3 [2020-09-24 22:44:55,081 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e342d13bb/ce27f88ea8b54a2eba19d468d9ff0afa [2020-09-24 22:44:55,094 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:44:55,100 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:44:55,101 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:44:55,101 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:44:55,106 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:44:55,107 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:44:55" (1/1) ... [2020-09-24 22:44:55,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538d8bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:44:55, skipping insertion in model container [2020-09-24 22:44:55,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:44:55" (1/1) ... [2020-09-24 22:44:55,121 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:44:55,198 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:44:55,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:44:55,701 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:44:55,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:44:55,811 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:44:55,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:44:55 WrapperNode [2020-09-24 22:44:55,811 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:44:55,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:44:55,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:44:55,813 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:44:55,829 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:44:55" (1/1) ... [2020-09-24 22:44:55,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:44:55" (1/1) ... [2020-09-24 22:44:55,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:44:55" (1/1) ... [2020-09-24 22:44:55,851 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:44:55" (1/1) ... [2020-09-24 22:44:55,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:44:55" (1/1) ... [2020-09-24 22:44:55,885 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:44:55" (1/1) ... [2020-09-24 22:44:55,889 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:44:55" (1/1) ... [2020-09-24 22:44:55,903 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:44:55,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:44:55,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:44:55,906 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:44:55,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:44:55" (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 22:44:55,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:44:55,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:44:55,982 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-24 22:44:55,982 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-24 22:44:55,982 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-24 22:44:55,982 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:44:55,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:44:55,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:44:55,983 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 22:44:55,983 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 22:44:55,983 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 22:44:55,984 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 22:44:55,984 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 22:44:55,984 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 22:44:55,984 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 22:44:55,984 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 22:44:55,985 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 22:44:55,985 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 22:44:55,985 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 22:44:55,985 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 22:44:55,986 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 22:44:55,986 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 22:44:55,986 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 22:44:55,986 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 22:44:55,986 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-24 22:44:55,987 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-24 22:44:55,987 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 22:44:55,987 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 22:44:55,987 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 22:44:55,987 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 22:44:55,987 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 22:44:55,988 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 22:44:55,988 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 22:44:55,988 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 22:44:55,988 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 22:44:55,988 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 22:44:55,988 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 22:44:55,989 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 22:44:55,989 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 22:44:55,989 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 22:44:55,989 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 22:44:55,989 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 22:44:55,990 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 22:44:55,990 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 22:44:55,990 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 22:44:55,990 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 22:44:55,990 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 22:44:55,990 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 22:44:55,990 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 22:44:55,991 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 22:44:55,991 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 22:44:55,991 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 22:44:55,991 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 22:44:55,991 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 22:44:55,992 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 22:44:55,992 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 22:44:55,992 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 22:44:55,992 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 22:44:55,992 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 22:44:55,992 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 22:44:55,993 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 22:44:55,993 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 22:44:55,993 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 22:44:55,993 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 22:44:55,993 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-24 22:44:55,993 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 22:44:55,994 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 22:44:55,994 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 22:44:55,994 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-24 22:44:55,994 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 22:44:55,994 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 22:44:55,994 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-24 22:44:55,995 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 22:44:55,995 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 22:44:55,995 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-24 22:44:55,995 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 22:44:55,995 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 22:44:55,995 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 22:44:55,996 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 22:44:55,996 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 22:44:55,996 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 22:44:55,996 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 22:44:55,996 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 22:44:55,996 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 22:44:55,997 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 22:44:55,997 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 22:44:55,997 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 22:44:55,997 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 22:44:55,997 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 22:44:55,997 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 22:44:55,998 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 22:44:55,998 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 22:44:55,998 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 22:44:55,998 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 22:44:55,998 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 22:44:55,998 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 22:44:55,998 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 22:44:55,999 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 22:44:55,999 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 22:44:55,999 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 22:44:55,999 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 22:44:55,999 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 22:44:55,999 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 22:44:56,000 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 22:44:56,000 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 22:44:56,000 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 22:44:56,000 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 22:44:56,000 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 22:44:56,000 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 22:44:56,001 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 22:44:56,001 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 22:44:56,001 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 22:44:56,001 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 22:44:56,001 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-24 22:44:56,001 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:44:56,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 22:44:56,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 22:44:56,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 22:44:56,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 22:44:56,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 22:44:56,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 22:44:56,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:44:56,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:44:56,317 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-24 22:44:56,775 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:44:56,775 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-24 22:44:56,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:44:56 BoogieIcfgContainer [2020-09-24 22:44:56,782 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:44:56,783 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:44:56,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:44:56,787 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:44:56,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:44:55" (1/3) ... [2020-09-24 22:44:56,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11fa447e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:44:56, skipping insertion in model container [2020-09-24 22:44:56,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:44:55" (2/3) ... [2020-09-24 22:44:56,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11fa447e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:44:56, skipping insertion in model container [2020-09-24 22:44:56,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:44:56" (3/3) ... [2020-09-24 22:44:56,792 INFO L109 eAbstractionObserver]: Analyzing ICFG list_and_tree_cnstr-1.i [2020-09-24 22:44:56,805 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:44:56,817 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:44:56,842 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:44:56,879 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:44:56,879 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:44:56,879 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:44:56,879 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:44:56,880 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:44:56,880 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:44:56,880 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:44:56,880 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:44:56,911 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2020-09-24 22:44:56,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-24 22:44:56,924 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:44:56,925 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] [2020-09-24 22:44:56,926 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:44:56,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:44:56,935 INFO L82 PathProgramCache]: Analyzing trace with hash -652445128, now seen corresponding path program 1 times [2020-09-24 22:44:56,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:44:56,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [772207921] [2020-09-24 22:44:56,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:44:57,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:57,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:57,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:57,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:57,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:57,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:57,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:57,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:58,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:58,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 22:44:58,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 22:44:58,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 903 [2020-09-24 22:44:58,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:58,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:44:58,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-24 22:44:58,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:44:58,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 22:44:58,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:44:58,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:58,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:58,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:58,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:44:58,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:58,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:44:58,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:58,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:44:58,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:44:58,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:44:58,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:44:58,128 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 22:44:58,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [772207921] [2020-09-24 22:44:58,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:44:58,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 22:44:58,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712747356] [2020-09-24 22:44:58,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 22:44:58,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:44:58,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 22:44:58,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 22:44:58,164 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 3 states. [2020-09-24 22:44:58,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:44:58,591 INFO L93 Difference]: Finished difference Result 342 states and 400 transitions. [2020-09-24 22:44:58,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 22:44:58,595 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-09-24 22:44:58,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:44:58,614 INFO L225 Difference]: With dead ends: 342 [2020-09-24 22:44:58,616 INFO L226 Difference]: Without dead ends: 166 [2020-09-24 22:44:58,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 22:44:58,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-09-24 22:44:58,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-09-24 22:44:58,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-09-24 22:44:58,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 183 transitions. [2020-09-24 22:44:58,723 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 183 transitions. Word has length 31 [2020-09-24 22:44:58,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:44:58,725 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 183 transitions. [2020-09-24 22:44:58,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 22:44:58,725 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 183 transitions. [2020-09-24 22:44:58,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-24 22:44:58,735 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:44:58,735 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] [2020-09-24 22:44:58,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:44:58,736 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:44:58,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:44:58,738 INFO L82 PathProgramCache]: Analyzing trace with hash 473660712, now seen corresponding path program 1 times [2020-09-24 22:44:58,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:44:58,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981040888] [2020-09-24 22:44:58,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:44:58,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:58,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:58,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:59,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:59,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 22:44:59,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:44:59,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 553 [2020-09-24 22:44:59,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:59,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:44:59,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 22:44:59,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 22:44:59,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:44:59,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:44:59,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:59,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:59,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:44:59,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:44:59,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:44:59,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 22:44:59,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:44:59,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:44:59,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:44:59,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:44:59,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:44:59,440 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 22:44:59,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981040888] [2020-09-24 22:44:59,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:44:59,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 22:44:59,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078270783] [2020-09-24 22:44:59,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 22:44:59,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:44:59,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 22:44:59,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:44:59,450 INFO L87 Difference]: Start difference. First operand 166 states and 183 transitions. Second operand 7 states. [2020-09-24 22:44:59,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:44:59,883 INFO L93 Difference]: Finished difference Result 243 states and 265 transitions. [2020-09-24 22:44:59,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 22:44:59,884 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2020-09-24 22:44:59,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:44:59,887 INFO L225 Difference]: With dead ends: 243 [2020-09-24 22:44:59,887 INFO L226 Difference]: Without dead ends: 237 [2020-09-24 22:44:59,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:44:59,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-09-24 22:44:59,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 179. [2020-09-24 22:44:59,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-09-24 22:44:59,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 199 transitions. [2020-09-24 22:44:59,903 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 199 transitions. Word has length 41 [2020-09-24 22:44:59,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:44:59,903 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 199 transitions. [2020-09-24 22:44:59,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 22:44:59,904 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 199 transitions. [2020-09-24 22:44:59,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-24 22:44:59,905 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:44:59,906 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:44:59,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:44:59,906 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:44:59,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:44:59,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1367895296, now seen corresponding path program 1 times [2020-09-24 22:44:59,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:44:59,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838429529] [2020-09-24 22:44:59,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:44:59,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:44:59,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:44:59,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:00,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:00,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 22:45:00,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:45:00,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 464 [2020-09-24 22:45:00,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:00,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:45:00,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 22:45:00,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 22:45:00,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:00,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:00,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:00,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:00,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:00,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:00,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:00,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:45:00,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:00,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:00,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:00,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:00,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:00,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:45:00,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838429529] [2020-09-24 22:45:00,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:45:00,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 22:45:00,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231536655] [2020-09-24 22:45:00,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 22:45:00,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:00,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 22:45:00,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:45:00,467 INFO L87 Difference]: Start difference. First operand 179 states and 199 transitions. Second operand 7 states. [2020-09-24 22:45:00,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:00,926 INFO L93 Difference]: Finished difference Result 246 states and 268 transitions. [2020-09-24 22:45:00,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 22:45:00,927 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2020-09-24 22:45:00,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:00,932 INFO L225 Difference]: With dead ends: 246 [2020-09-24 22:45:00,932 INFO L226 Difference]: Without dead ends: 231 [2020-09-24 22:45:00,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:45:00,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-09-24 22:45:00,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 176. [2020-09-24 22:45:00,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-09-24 22:45:00,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 195 transitions. [2020-09-24 22:45:00,959 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 195 transitions. Word has length 47 [2020-09-24 22:45:00,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:00,960 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 195 transitions. [2020-09-24 22:45:00,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 22:45:00,960 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 195 transitions. [2020-09-24 22:45:00,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-24 22:45:00,964 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:00,964 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:45:00,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:45:00,965 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:00,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:00,965 INFO L82 PathProgramCache]: Analyzing trace with hash -331213520, now seen corresponding path program 1 times [2020-09-24 22:45:00,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:00,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645949566] [2020-09-24 22:45:00,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:00,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:00,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:01,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:01,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:01,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 22:45:01,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:45:01,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 495 [2020-09-24 22:45:01,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:01,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:45:01,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 22:45:01,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 22:45:01,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:01,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:01,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:01,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:01,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:01,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:01,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:01,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:45:01,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:01,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:01,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:01,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:01,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:01,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:45:01,561 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645949566] [2020-09-24 22:45:01,561 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:45:01,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 22:45:01,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786795507] [2020-09-24 22:45:01,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 22:45:01,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:01,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 22:45:01,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:45:01,565 INFO L87 Difference]: Start difference. First operand 176 states and 195 transitions. Second operand 7 states. [2020-09-24 22:45:01,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:01,913 INFO L93 Difference]: Finished difference Result 228 states and 249 transitions. [2020-09-24 22:45:01,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 22:45:01,914 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2020-09-24 22:45:01,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:01,918 INFO L225 Difference]: With dead ends: 228 [2020-09-24 22:45:01,919 INFO L226 Difference]: Without dead ends: 204 [2020-09-24 22:45:01,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:45:01,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-09-24 22:45:01,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 171. [2020-09-24 22:45:01,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-09-24 22:45:01,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 189 transitions. [2020-09-24 22:45:01,933 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 189 transitions. Word has length 47 [2020-09-24 22:45:01,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:01,934 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 189 transitions. [2020-09-24 22:45:01,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 22:45:01,934 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 189 transitions. [2020-09-24 22:45:01,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 22:45:01,935 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:01,935 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:45:01,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:45:01,939 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:01,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:01,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1290320609, now seen corresponding path program 1 times [2020-09-24 22:45:01,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:01,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502426691] [2020-09-24 22:45:01,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:01,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:01,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:02,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:02,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:03,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:03,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 22:45:03,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:45:03,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2006 [2020-09-24 22:45:03,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:03,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 22:45:03,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 22:45:03,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 22:45:03,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:04,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:04,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:04,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:04,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:04,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:04,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:04,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:45:04,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:04,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:04,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:04,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:04,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:04,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:45:04,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502426691] [2020-09-24 22:45:04,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:45:04,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 22:45:04,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357625596] [2020-09-24 22:45:04,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 22:45:04,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:04,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 22:45:04,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:45:04,139 INFO L87 Difference]: Start difference. First operand 171 states and 189 transitions. Second operand 11 states. [2020-09-24 22:45:04,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:04,925 INFO L93 Difference]: Finished difference Result 252 states and 274 transitions. [2020-09-24 22:45:04,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 22:45:04,925 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-09-24 22:45:04,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:04,927 INFO L225 Difference]: With dead ends: 252 [2020-09-24 22:45:04,927 INFO L226 Difference]: Without dead ends: 246 [2020-09-24 22:45:04,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-09-24 22:45:04,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-09-24 22:45:04,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 190. [2020-09-24 22:45:04,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-09-24 22:45:04,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 210 transitions. [2020-09-24 22:45:04,937 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 210 transitions. Word has length 52 [2020-09-24 22:45:04,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:04,938 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 210 transitions. [2020-09-24 22:45:04,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 22:45:04,938 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 210 transitions. [2020-09-24 22:45:04,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 22:45:04,940 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:04,940 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:45:04,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 22:45:04,941 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:04,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:04,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1305030225, now seen corresponding path program 1 times [2020-09-24 22:45:04,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:04,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153360032] [2020-09-24 22:45:04,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:04,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:04,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:04,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:05,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:06,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:06,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 22:45:06,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:45:06,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1720 [2020-09-24 22:45:06,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:06,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 22:45:06,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 22:45:06,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 22:45:06,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:06,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:06,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:06,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:06,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:06,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:06,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:06,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:45:06,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:06,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:06,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:06,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:06,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:06,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:45:06,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153360032] [2020-09-24 22:45:06,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:45:06,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 22:45:06,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926585483] [2020-09-24 22:45:06,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 22:45:06,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:06,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 22:45:06,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:45:06,870 INFO L87 Difference]: Start difference. First operand 190 states and 210 transitions. Second operand 11 states. [2020-09-24 22:45:07,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:07,578 INFO L93 Difference]: Finished difference Result 268 states and 293 transitions. [2020-09-24 22:45:07,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 22:45:07,578 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-09-24 22:45:07,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:07,581 INFO L225 Difference]: With dead ends: 268 [2020-09-24 22:45:07,581 INFO L226 Difference]: Without dead ends: 262 [2020-09-24 22:45:07,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-09-24 22:45:07,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-09-24 22:45:07,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 202. [2020-09-24 22:45:07,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-24 22:45:07,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 223 transitions. [2020-09-24 22:45:07,589 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 223 transitions. Word has length 52 [2020-09-24 22:45:07,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:07,590 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 223 transitions. [2020-09-24 22:45:07,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 22:45:07,590 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 223 transitions. [2020-09-24 22:45:07,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 22:45:07,591 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:07,591 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:45:07,591 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 22:45:07,591 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:07,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:07,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1842695, now seen corresponding path program 1 times [2020-09-24 22:45:07,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:07,592 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727362291] [2020-09-24 22:45:07,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:07,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:07,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:07,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:07,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:09,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:11,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:12,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:12,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 22:45:12,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:45:12,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 22:45:12,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:12,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:45:12,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 22:45:12,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 22:45:12,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:12,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:12,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:12,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:12,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:12,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:12,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:12,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:45:12,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:12,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:12,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:12,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:12,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:12,747 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:45:12,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727362291] [2020-09-24 22:45:12,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:45:12,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 22:45:12,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783501096] [2020-09-24 22:45:12,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:45:12,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:12,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:45:12,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:45:12,749 INFO L87 Difference]: Start difference. First operand 202 states and 223 transitions. Second operand 9 states. [2020-09-24 22:45:13,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:13,256 INFO L93 Difference]: Finished difference Result 269 states and 294 transitions. [2020-09-24 22:45:13,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 22:45:13,256 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-09-24 22:45:13,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:13,258 INFO L225 Difference]: With dead ends: 269 [2020-09-24 22:45:13,258 INFO L226 Difference]: Without dead ends: 254 [2020-09-24 22:45:13,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-09-24 22:45:13,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-09-24 22:45:13,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 209. [2020-09-24 22:45:13,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-09-24 22:45:13,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 231 transitions. [2020-09-24 22:45:13,267 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 231 transitions. Word has length 58 [2020-09-24 22:45:13,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:13,268 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 231 transitions. [2020-09-24 22:45:13,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:45:13,268 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 231 transitions. [2020-09-24 22:45:13,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 22:45:13,269 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:13,269 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:45:13,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 22:45:13,270 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:13,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:13,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1034839081, now seen corresponding path program 1 times [2020-09-24 22:45:13,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:13,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269857886] [2020-09-24 22:45:13,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:13,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:13,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:13,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:14,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:14,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 22:45:14,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:45:14,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1181 [2020-09-24 22:45:14,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:14,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 22:45:14,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 22:45:14,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 22:45:14,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:45:14,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:14,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:14,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:14,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:14,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:14,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:14,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:45:14,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:14,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:14,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:14,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:14,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:14,837 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:45:14,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269857886] [2020-09-24 22:45:14,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:45:14,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 22:45:14,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361740519] [2020-09-24 22:45:14,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 22:45:14,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:14,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 22:45:14,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-24 22:45:14,840 INFO L87 Difference]: Start difference. First operand 209 states and 231 transitions. Second operand 16 states. [2020-09-24 22:45:16,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:16,235 INFO L93 Difference]: Finished difference Result 274 states and 299 transitions. [2020-09-24 22:45:16,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 22:45:16,236 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 58 [2020-09-24 22:45:16,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:16,238 INFO L225 Difference]: With dead ends: 274 [2020-09-24 22:45:16,238 INFO L226 Difference]: Without dead ends: 268 [2020-09-24 22:45:16,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-24 22:45:16,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-09-24 22:45:16,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 213. [2020-09-24 22:45:16,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-09-24 22:45:16,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 235 transitions. [2020-09-24 22:45:16,247 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 235 transitions. Word has length 58 [2020-09-24 22:45:16,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:16,248 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 235 transitions. [2020-09-24 22:45:16,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 22:45:16,248 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 235 transitions. [2020-09-24 22:45:16,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 22:45:16,249 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:16,249 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:45:16,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 22:45:16,250 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:16,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:16,250 INFO L82 PathProgramCache]: Analyzing trace with hash 218965575, now seen corresponding path program 1 times [2020-09-24 22:45:16,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:16,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615088541] [2020-09-24 22:45:16,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:16,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:16,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:16,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:17,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:17,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 22:45:17,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:45:17,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1081 [2020-09-24 22:45:17,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:17,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 22:45:17,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 22:45:17,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 22:45:17,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:17,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:17,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:17,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:17,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:17,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:17,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:17,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:45:17,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:17,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:17,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:17,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:17,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:17,685 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:45:17,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615088541] [2020-09-24 22:45:17,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:45:17,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 22:45:17,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418362556] [2020-09-24 22:45:17,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 22:45:17,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:17,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 22:45:17,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-24 22:45:17,688 INFO L87 Difference]: Start difference. First operand 213 states and 235 transitions. Second operand 16 states. [2020-09-24 22:45:19,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:19,194 INFO L93 Difference]: Finished difference Result 288 states and 313 transitions. [2020-09-24 22:45:19,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 22:45:19,195 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 58 [2020-09-24 22:45:19,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:19,198 INFO L225 Difference]: With dead ends: 288 [2020-09-24 22:45:19,198 INFO L226 Difference]: Without dead ends: 282 [2020-09-24 22:45:19,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-24 22:45:19,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-09-24 22:45:19,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 222. [2020-09-24 22:45:19,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-09-24 22:45:19,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 245 transitions. [2020-09-24 22:45:19,207 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 245 transitions. Word has length 58 [2020-09-24 22:45:19,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:19,208 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 245 transitions. [2020-09-24 22:45:19,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 22:45:19,208 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 245 transitions. [2020-09-24 22:45:19,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 22:45:19,209 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:19,209 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:45:19,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 22:45:19,209 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:19,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:19,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1255647351, now seen corresponding path program 1 times [2020-09-24 22:45:19,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:19,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774125840] [2020-09-24 22:45:19,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:19,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:19,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:19,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:19,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:21,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:21,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 22:45:21,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:45:21,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2777 [2020-09-24 22:45:21,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:21,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:45:21,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 22:45:21,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 22:45:22,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:22,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:22,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:22,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:22,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:22,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:22,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:22,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:45:22,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:22,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:22,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:22,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:22,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:22,101 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:45:22,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774125840] [2020-09-24 22:45:22,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:45:22,102 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 22:45:22,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493581645] [2020-09-24 22:45:22,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:45:22,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:22,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:45:22,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:45:22,103 INFO L87 Difference]: Start difference. First operand 222 states and 245 transitions. Second operand 9 states. [2020-09-24 22:45:22,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:22,669 INFO L93 Difference]: Finished difference Result 280 states and 305 transitions. [2020-09-24 22:45:22,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 22:45:22,670 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-09-24 22:45:22,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:22,672 INFO L225 Difference]: With dead ends: 280 [2020-09-24 22:45:22,673 INFO L226 Difference]: Without dead ends: 261 [2020-09-24 22:45:22,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-09-24 22:45:22,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-09-24 22:45:22,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 222. [2020-09-24 22:45:22,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-09-24 22:45:22,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 244 transitions. [2020-09-24 22:45:22,682 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 244 transitions. Word has length 58 [2020-09-24 22:45:22,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:22,683 INFO L479 AbstractCegarLoop]: Abstraction has 222 states and 244 transitions. [2020-09-24 22:45:22,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:45:22,683 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 244 transitions. [2020-09-24 22:45:22,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-24 22:45:22,684 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:22,684 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:45:22,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 22:45:22,685 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:22,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:22,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1042030712, now seen corresponding path program 2 times [2020-09-24 22:45:22,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:22,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624478807] [2020-09-24 22:45:22,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:22,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:22,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:22,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:24,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:25,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:25,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-24 22:45:25,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:45:25,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3059 [2020-09-24 22:45:25,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:25,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 22:45:25,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 22:45:25,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-24 22:45:25,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:26,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:26,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:26,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:26,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:26,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:26,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:26,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:45:26,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:26,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:26,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:26,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:26,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:26,504 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:45:26,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1624478807] [2020-09-24 22:45:26,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:45:26,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 22:45:26,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064730340] [2020-09-24 22:45:26,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 22:45:26,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:26,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 22:45:26,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-09-24 22:45:26,506 INFO L87 Difference]: Start difference. First operand 222 states and 244 transitions. Second operand 19 states. [2020-09-24 22:45:27,333 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2020-09-24 22:45:28,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:28,861 INFO L93 Difference]: Finished difference Result 316 states and 343 transitions. [2020-09-24 22:45:28,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-24 22:45:28,863 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 63 [2020-09-24 22:45:28,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:28,865 INFO L225 Difference]: With dead ends: 316 [2020-09-24 22:45:28,865 INFO L226 Difference]: Without dead ends: 310 [2020-09-24 22:45:28,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=412, Invalid=1568, Unknown=0, NotChecked=0, Total=1980 [2020-09-24 22:45:28,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-09-24 22:45:28,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 236. [2020-09-24 22:45:28,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-09-24 22:45:28,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 259 transitions. [2020-09-24 22:45:28,875 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 259 transitions. Word has length 63 [2020-09-24 22:45:28,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:28,876 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 259 transitions. [2020-09-24 22:45:28,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 22:45:28,876 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 259 transitions. [2020-09-24 22:45:28,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-24 22:45:28,877 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:28,877 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:45:28,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 22:45:28,878 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:28,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:28,878 INFO L82 PathProgramCache]: Analyzing trace with hash 352263162, now seen corresponding path program 1 times [2020-09-24 22:45:28,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:28,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360930547] [2020-09-24 22:45:28,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:28,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:28,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:28,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:29,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:33,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:33,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-24 22:45:33,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:45:33,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4711 [2020-09-24 22:45:33,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:33,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 22:45:33,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 22:45:33,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-24 22:45:33,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:33,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:33,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:33,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:33,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:33,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:33,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:33,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:45:33,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:33,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:33,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:33,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:33,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:45:33,955 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:45:33,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360930547] [2020-09-24 22:45:33,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:45:33,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-24 22:45:33,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779403125] [2020-09-24 22:45:33,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 22:45:33,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:33,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 22:45:33,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2020-09-24 22:45:33,959 INFO L87 Difference]: Start difference. First operand 236 states and 259 transitions. Second operand 18 states. [2020-09-24 22:45:35,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:35,614 INFO L93 Difference]: Finished difference Result 342 states and 371 transitions. [2020-09-24 22:45:35,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-24 22:45:35,615 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 63 [2020-09-24 22:45:35,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:35,616 INFO L225 Difference]: With dead ends: 342 [2020-09-24 22:45:35,617 INFO L226 Difference]: Without dead ends: 336 [2020-09-24 22:45:35,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=406, Invalid=1486, Unknown=0, NotChecked=0, Total=1892 [2020-09-24 22:45:35,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2020-09-24 22:45:35,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 248. [2020-09-24 22:45:35,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-09-24 22:45:35,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 272 transitions. [2020-09-24 22:45:35,628 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 272 transitions. Word has length 63 [2020-09-24 22:45:35,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:35,628 INFO L479 AbstractCegarLoop]: Abstraction has 248 states and 272 transitions. [2020-09-24 22:45:35,628 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 22:45:35,628 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 272 transitions. [2020-09-24 22:45:35,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-24 22:45:35,629 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:35,630 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:45:35,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 22:45:35,630 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:35,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:35,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1724347713, now seen corresponding path program 1 times [2020-09-24 22:45:35,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:35,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167244020] [2020-09-24 22:45:35,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:35,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:35,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:35,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:37,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:37,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 22:45:37,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:45:37,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1399 [2020-09-24 22:45:37,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:37,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 22:45:37,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 22:45:37,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 22:45:37,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:37,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:37,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:37,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:37,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:37,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:37,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:37,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:45:37,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:37,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:37,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:37,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:37,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:45:37,289 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:45:37,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167244020] [2020-09-24 22:45:37,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:45:37,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 22:45:37,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071679413] [2020-09-24 22:45:37,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 22:45:37,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:37,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 22:45:37,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-24 22:45:37,294 INFO L87 Difference]: Start difference. First operand 248 states and 272 transitions. Second operand 16 states. [2020-09-24 22:45:38,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:38,615 INFO L93 Difference]: Finished difference Result 314 states and 341 transitions. [2020-09-24 22:45:38,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 22:45:38,616 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 64 [2020-09-24 22:45:38,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:38,618 INFO L225 Difference]: With dead ends: 314 [2020-09-24 22:45:38,618 INFO L226 Difference]: Without dead ends: 299 [2020-09-24 22:45:38,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-24 22:45:38,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-09-24 22:45:38,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 250. [2020-09-24 22:45:38,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-09-24 22:45:38,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 274 transitions. [2020-09-24 22:45:38,629 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 274 transitions. Word has length 64 [2020-09-24 22:45:38,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:38,629 INFO L479 AbstractCegarLoop]: Abstraction has 250 states and 274 transitions. [2020-09-24 22:45:38,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 22:45:38,630 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 274 transitions. [2020-09-24 22:45:38,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-24 22:45:38,631 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:38,631 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:45:38,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 22:45:38,631 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:38,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:38,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1533937807, now seen corresponding path program 2 times [2020-09-24 22:45:38,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:38,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193515133] [2020-09-24 22:45:38,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:38,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:38,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:38,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:40,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:40,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 22:45:40,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:45:40,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1383 [2020-09-24 22:45:40,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:40,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 22:45:40,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 22:45:40,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 22:45:40,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:40,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:40,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:40,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:40,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:40,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:40,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:40,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:45:40,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:40,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:40,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:40,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:40,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:40,303 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:45:40,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193515133] [2020-09-24 22:45:40,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:45:40,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 22:45:40,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455446670] [2020-09-24 22:45:40,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 22:45:40,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:40,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 22:45:40,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-24 22:45:40,305 INFO L87 Difference]: Start difference. First operand 250 states and 274 transitions. Second operand 16 states. [2020-09-24 22:45:41,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:41,587 INFO L93 Difference]: Finished difference Result 296 states and 322 transitions. [2020-09-24 22:45:41,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 22:45:41,587 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 64 [2020-09-24 22:45:41,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:41,589 INFO L225 Difference]: With dead ends: 296 [2020-09-24 22:45:41,589 INFO L226 Difference]: Without dead ends: 266 [2020-09-24 22:45:41,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2020-09-24 22:45:41,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-09-24 22:45:41,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 239. [2020-09-24 22:45:41,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-09-24 22:45:41,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 262 transitions. [2020-09-24 22:45:41,597 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 262 transitions. Word has length 64 [2020-09-24 22:45:41,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:41,597 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 262 transitions. [2020-09-24 22:45:41,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 22:45:41,598 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 262 transitions. [2020-09-24 22:45:41,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-24 22:45:41,599 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:41,599 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:45:41,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 22:45:41,599 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:41,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:41,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1669834975, now seen corresponding path program 2 times [2020-09-24 22:45:41,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:41,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909772551] [2020-09-24 22:45:41,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:41,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:41,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:41,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:43,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:43,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 22:45:43,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:45:43,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1391 [2020-09-24 22:45:43,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:43,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 22:45:43,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 22:45:43,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 22:45:43,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:43,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:45:43,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:43,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:43,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:45:43,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:45:43,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:45:43,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:45:43,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:45:43,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:45:43,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:45:43,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:45:43,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:45:43,223 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:45:43,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909772551] [2020-09-24 22:45:43,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:45:43,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 22:45:43,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235493819] [2020-09-24 22:45:43,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 22:45:43,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:45:43,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 22:45:43,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-24 22:45:43,225 INFO L87 Difference]: Start difference. First operand 239 states and 262 transitions. Second operand 16 states. [2020-09-24 22:45:44,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:45:44,574 INFO L93 Difference]: Finished difference Result 278 states and 302 transitions. [2020-09-24 22:45:44,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 22:45:44,574 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 64 [2020-09-24 22:45:44,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:45:44,576 INFO L225 Difference]: With dead ends: 278 [2020-09-24 22:45:44,577 INFO L226 Difference]: Without dead ends: 252 [2020-09-24 22:45:44,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2020-09-24 22:45:44,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-09-24 22:45:44,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 225. [2020-09-24 22:45:44,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-09-24 22:45:44,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 247 transitions. [2020-09-24 22:45:44,584 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 247 transitions. Word has length 64 [2020-09-24 22:45:44,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:45:44,585 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 247 transitions. [2020-09-24 22:45:44,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 22:45:44,585 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 247 transitions. [2020-09-24 22:45:44,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-24 22:45:44,586 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:45:44,586 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:45:44,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-24 22:45:44,587 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:45:44,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:45:44,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1864674656, now seen corresponding path program 2 times [2020-09-24 22:45:44,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:45:44,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702785970] [2020-09-24 22:45:44,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:45:44,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:45:44,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:45:44,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking...