/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 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 17:08:50,422 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:08:50,427 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:08:50,470 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:08:50,472 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:08:50,480 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:08:50,483 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:08:50,488 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:08:50,492 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:08:50,495 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:08:50,496 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:08:50,498 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:08:50,498 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:08:50,501 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:08:50,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:08:50,506 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:08:50,507 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:08:50,509 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:08:50,510 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:08:50,519 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:08:50,522 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:08:50,523 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:08:50,524 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:08:50,525 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:08:50,542 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:08:50,542 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:08:50,542 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:08:50,544 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:08:50,547 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:08:50,548 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:08:50,551 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:08:50,552 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:08:50,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:08:50,556 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:08:50,557 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:08:50,557 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:08:50,558 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:08:50,558 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:08:50,559 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:08:50,560 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:08:50,562 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:08:50,563 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 17:08:50,607 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:08:50,607 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:08:50,610 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:08:50,610 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:08:50,610 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:08:50,610 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:08:50,611 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:08:50,611 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:08:50,611 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:08:50,611 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:08:50,613 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:08:50,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:08:50,613 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:08:50,613 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:08:50,614 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:08:50,614 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:08:50,614 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:08:50,614 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:08:50,614 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:08:50,615 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:08:50,615 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:08:50,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:08:50,615 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:08:50,615 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:08:50,616 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:08:50,616 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:08:50,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:08:50,616 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:08:50,616 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:08:50,617 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;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;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;log-additional-information=true; [2020-09-24 17:08:51,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:08:51,096 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:08:51,100 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:08:51,102 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:08:51,103 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:08:51,105 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i [2020-09-24 17:08:51,212 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2880279a6/edd136aa6b7845158b0534c471fa182f/FLAG62a5bd51b [2020-09-24 17:08:51,856 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:08:51,857 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i [2020-09-24 17:08:51,873 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2880279a6/edd136aa6b7845158b0534c471fa182f/FLAG62a5bd51b [2020-09-24 17:08:52,133 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2880279a6/edd136aa6b7845158b0534c471fa182f [2020-09-24 17:08:52,147 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:08:52,152 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:08:52,154 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:08:52,154 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:08:52,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:08:52,160 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:08:52" (1/1) ... [2020-09-24 17:08:52,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@361633d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:52, skipping insertion in model container [2020-09-24 17:08:52,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:08:52" (1/1) ... [2020-09-24 17:08:52,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:08:52,224 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:08:52,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:08:52,761 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:08:52,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:08:52,896 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:08:52,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:52 WrapperNode [2020-09-24 17:08:52,897 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:08:52,898 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:08:52,898 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:08:52,898 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:08:52,917 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:52" (1/1) ... [2020-09-24 17:08:52,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:52" (1/1) ... [2020-09-24 17:08:52,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:52" (1/1) ... [2020-09-24 17:08:52,938 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:52" (1/1) ... [2020-09-24 17:08:52,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:52" (1/1) ... [2020-09-24 17:08:52,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:52" (1/1) ... [2020-09-24 17:08:52,978 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:52" (1/1) ... [2020-09-24 17:08:52,986 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:08:52,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:08:52,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:08:52,987 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:08:52,988 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:52" (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 17:08:53,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:08:53,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:08:53,072 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-24 17:08:53,072 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-24 17:08:53,072 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-24 17:08:53,072 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:08:53,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:08:53,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 17:08:53,073 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 17:08:53,073 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 17:08:53,074 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 17:08:53,074 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 17:08:53,074 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 17:08:53,074 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 17:08:53,074 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 17:08:53,075 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 17:08:53,075 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 17:08:53,075 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 17:08:53,075 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 17:08:53,076 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 17:08:53,076 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 17:08:53,076 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 17:08:53,076 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 17:08:53,076 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 17:08:53,076 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-24 17:08:53,077 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-24 17:08:53,077 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 17:08:53,077 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 17:08:53,077 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 17:08:53,077 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 17:08:53,077 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 17:08:53,078 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 17:08:53,078 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 17:08:53,078 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 17:08:53,078 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 17:08:53,078 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 17:08:53,079 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 17:08:53,079 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 17:08:53,079 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 17:08:53,079 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 17:08:53,079 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 17:08:53,079 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 17:08:53,080 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 17:08:53,080 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 17:08:53,080 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 17:08:53,080 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 17:08:53,080 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 17:08:53,080 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 17:08:53,081 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 17:08:53,081 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 17:08:53,081 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 17:08:53,081 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 17:08:53,081 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 17:08:53,081 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 17:08:53,082 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 17:08:53,082 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 17:08:53,082 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 17:08:53,082 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 17:08:53,082 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 17:08:53,082 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 17:08:53,083 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 17:08:53,083 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 17:08:53,083 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 17:08:53,083 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 17:08:53,083 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-24 17:08:53,083 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 17:08:53,084 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 17:08:53,084 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 17:08:53,084 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-24 17:08:53,084 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 17:08:53,084 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 17:08:53,084 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-24 17:08:53,085 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 17:08:53,085 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 17:08:53,085 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-24 17:08:53,085 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 17:08:53,085 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 17:08:53,085 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 17:08:53,086 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 17:08:53,086 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 17:08:53,086 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 17:08:53,086 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 17:08:53,086 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 17:08:53,086 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 17:08:53,087 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 17:08:53,087 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 17:08:53,087 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 17:08:53,087 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 17:08:53,087 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 17:08:53,087 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 17:08:53,087 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 17:08:53,088 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 17:08:53,088 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 17:08:53,088 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 17:08:53,088 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 17:08:53,088 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 17:08:53,088 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 17:08:53,088 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 17:08:53,089 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 17:08:53,089 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 17:08:53,089 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 17:08:53,089 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 17:08:53,089 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 17:08:53,089 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 17:08:53,090 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 17:08:53,090 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 17:08:53,090 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 17:08:53,090 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 17:08:53,090 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 17:08:53,090 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 17:08:53,090 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 17:08:53,091 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 17:08:53,091 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 17:08:53,091 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-24 17:08:53,091 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:08:53,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 17:08:53,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 17:08:53,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 17:08:53,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 17:08:53,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 17:08:53,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 17:08:53,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:08:53,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:08:53,411 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-24 17:08:53,896 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:08:53,897 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-24 17:08:53,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:08:53 BoogieIcfgContainer [2020-09-24 17:08:53,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:08:53,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:08:53,912 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:08:53,919 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:08:53,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:08:52" (1/3) ... [2020-09-24 17:08:53,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1bc439 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:08:53, skipping insertion in model container [2020-09-24 17:08:53,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:08:52" (2/3) ... [2020-09-24 17:08:53,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1bc439 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:08:53, skipping insertion in model container [2020-09-24 17:08:53,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:08:53" (3/3) ... [2020-09-24 17:08:53,925 INFO L109 eAbstractionObserver]: Analyzing ICFG list_and_tree_cnstr-1.i [2020-09-24 17:08:53,938 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:08:53,951 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:08:53,975 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:08:54,019 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:08:54,019 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:08:54,019 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:08:54,028 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:08:54,028 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:08:54,030 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:08:54,030 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:08:54,030 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:08:54,064 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2020-09-24 17:08:54,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-24 17:08:54,082 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:08:54,084 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 17:08:54,085 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:08:54,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:08:54,093 INFO L82 PathProgramCache]: Analyzing trace with hash -652445128, now seen corresponding path program 1 times [2020-09-24 17:08:54,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:08:54,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1829622171] [2020-09-24 17:08:54,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:08:54,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:54,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:54,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:54,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:54,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:54,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:54,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:54,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:55,119 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:55,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 17:08:55,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 17:08:55,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 834 [2020-09-24 17:08:55,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:55,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:08:55,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 17:08:55,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 17:08:55,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:08:55,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:08:55,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:55,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:55,218 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:55,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:08:55,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:55,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 17:08:55,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:55,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:08:55,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:08:55,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:08:55,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:55,235 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 17:08:55,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1829622171] [2020-09-24 17:08:55,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:08:55,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 17:08:55,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315851091] [2020-09-24 17:08:55,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 17:08:55,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:08:55,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 17:08:55,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 17:08:55,268 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 5 states. [2020-09-24 17:08:55,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:08:55,751 INFO L93 Difference]: Finished difference Result 377 states and 443 transitions. [2020-09-24 17:08:55,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 17:08:55,754 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-09-24 17:08:55,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:08:55,771 INFO L225 Difference]: With dead ends: 377 [2020-09-24 17:08:55,771 INFO L226 Difference]: Without dead ends: 201 [2020-09-24 17:08:55,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 17:08:55,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-09-24 17:08:55,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 200. [2020-09-24 17:08:55,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-09-24 17:08:55,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 222 transitions. [2020-09-24 17:08:55,847 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 222 transitions. Word has length 31 [2020-09-24 17:08:55,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:08:55,848 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 222 transitions. [2020-09-24 17:08:55,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 17:08:55,848 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 222 transitions. [2020-09-24 17:08:55,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-24 17:08:55,852 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:08:55,853 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:08:55,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:08:55,853 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:08:55,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:08:55,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1870874818, now seen corresponding path program 1 times [2020-09-24 17:08:55,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:08:55,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809822995] [2020-09-24 17:08:55,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:08:55,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:55,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:55,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:56,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:56,785 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:56,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 17:08:56,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 17:08:56,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 904 [2020-09-24 17:08:56,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:56,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:08:56,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 17:08:56,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 17:08:56,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:56,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:08:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:56,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:56,831 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:56,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:08:56,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:56,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:08:56,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:56,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:08:56,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:08:56,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:08:56,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:56,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:08:56,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809822995] [2020-09-24 17:08:56,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:08:56,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 17:08:56,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229819369] [2020-09-24 17:08:56,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 17:08:56,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:08:56,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 17:08:56,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 17:08:56,844 INFO L87 Difference]: Start difference. First operand 200 states and 222 transitions. Second operand 4 states. [2020-09-24 17:08:57,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:08:57,139 INFO L93 Difference]: Finished difference Result 321 states and 359 transitions. [2020-09-24 17:08:57,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 17:08:57,140 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-09-24 17:08:57,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:08:57,142 INFO L225 Difference]: With dead ends: 321 [2020-09-24 17:08:57,144 INFO L226 Difference]: Without dead ends: 202 [2020-09-24 17:08:57,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 17:08:57,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-24 17:08:57,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-09-24 17:08:57,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-24 17:08:57,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 224 transitions. [2020-09-24 17:08:57,184 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 224 transitions. Word has length 54 [2020-09-24 17:08:57,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:08:57,187 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 224 transitions. [2020-09-24 17:08:57,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 17:08:57,188 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 224 transitions. [2020-09-24 17:08:57,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-24 17:08:57,194 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:08:57,194 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:08:57,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:08:57,194 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:08:57,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:08:57,196 INFO L82 PathProgramCache]: Analyzing trace with hash 129316031, now seen corresponding path program 1 times [2020-09-24 17:08:57,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:08:57,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [623036617] [2020-09-24 17:08:57,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:08:57,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:57,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:57,474 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:57,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 17:08:57,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:57,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-09-24 17:08:57,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:57,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:08:57,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 17:08:57,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 17:08:57,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:57,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:08:57,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:57,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:57,580 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:57,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:08:57,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:57,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 17:08:57,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:57,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:08:57,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:08:57,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:08:57,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:57,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 17:08:57,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [623036617] [2020-09-24 17:08:57,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:08:57,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 17:08:57,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993828151] [2020-09-24 17:08:57,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 17:08:57,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:08:57,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 17:08:57,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 17:08:57,598 INFO L87 Difference]: Start difference. First operand 202 states and 224 transitions. Second operand 7 states. [2020-09-24 17:08:58,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:08:58,021 INFO L93 Difference]: Finished difference Result 279 states and 306 transitions. [2020-09-24 17:08:58,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 17:08:58,021 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2020-09-24 17:08:58,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:08:58,024 INFO L225 Difference]: With dead ends: 279 [2020-09-24 17:08:58,024 INFO L226 Difference]: Without dead ends: 273 [2020-09-24 17:08:58,025 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 17:08:58,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-09-24 17:08:58,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 215. [2020-09-24 17:08:58,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-09-24 17:08:58,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 240 transitions. [2020-09-24 17:08:58,039 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 240 transitions. Word has length 56 [2020-09-24 17:08:58,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:08:58,040 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 240 transitions. [2020-09-24 17:08:58,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 17:08:58,040 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 240 transitions. [2020-09-24 17:08:58,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-24 17:08:58,046 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:08:58,046 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:08:58,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 17:08:58,050 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:08:58,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:08:58,051 INFO L82 PathProgramCache]: Analyzing trace with hash 593034583, now seen corresponding path program 1 times [2020-09-24 17:08:58,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:08:58,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601514755] [2020-09-24 17:08:58,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:08:58,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:58,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:58,270 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:58,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 17:08:58,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:58,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-09-24 17:08:58,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:58,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:08:58,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 17:08:58,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 17:08:58,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:58,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:08:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:58,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:58,344 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:58,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:08:58,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:58,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 17:08:58,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:58,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:08:58,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:08:58,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:08:58,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:08:58,354 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 17:08:58,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601514755] [2020-09-24 17:08:58,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:08:58,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 17:08:58,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484925564] [2020-09-24 17:08:58,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 17:08:58,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:08:58,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 17:08:58,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 17:08:58,357 INFO L87 Difference]: Start difference. First operand 215 states and 240 transitions. Second operand 7 states. [2020-09-24 17:08:58,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:08:58,819 INFO L93 Difference]: Finished difference Result 282 states and 309 transitions. [2020-09-24 17:08:58,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 17:08:58,819 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 62 [2020-09-24 17:08:58,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:08:58,822 INFO L225 Difference]: With dead ends: 282 [2020-09-24 17:08:58,822 INFO L226 Difference]: Without dead ends: 267 [2020-09-24 17:08:58,823 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 17:08:58,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-09-24 17:08:58,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 212. [2020-09-24 17:08:58,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-09-24 17:08:58,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 236 transitions. [2020-09-24 17:08:58,833 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 236 transitions. Word has length 62 [2020-09-24 17:08:58,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:08:58,834 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 236 transitions. [2020-09-24 17:08:58,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 17:08:58,834 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 236 transitions. [2020-09-24 17:08:58,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-24 17:08:58,836 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:08:58,837 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:08:58,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 17:08:58,837 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:08:58,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:08:58,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1629716359, now seen corresponding path program 1 times [2020-09-24 17:08:58,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:08:58,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143543532] [2020-09-24 17:08:58,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:08:58,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:58,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:59,057 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:59,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 17:08:59,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:59,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-24 17:08:59,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:59,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:08:59,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 17:08:59,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 17:08:59,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:59,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:08:59,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:59,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:59,139 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:59,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:08:59,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:59,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 17:08:59,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:59,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:08:59,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:08:59,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:08:59,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:59,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 17:08:59,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143543532] [2020-09-24 17:08:59,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:08:59,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 17:08:59,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468024570] [2020-09-24 17:08:59,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 17:08:59,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:08:59,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 17:08:59,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 17:08:59,152 INFO L87 Difference]: Start difference. First operand 212 states and 236 transitions. Second operand 7 states. [2020-09-24 17:08:59,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:08:59,555 INFO L93 Difference]: Finished difference Result 264 states and 290 transitions. [2020-09-24 17:08:59,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 17:08:59,556 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 62 [2020-09-24 17:08:59,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:08:59,558 INFO L225 Difference]: With dead ends: 264 [2020-09-24 17:08:59,558 INFO L226 Difference]: Without dead ends: 240 [2020-09-24 17:08:59,558 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 17:08:59,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-09-24 17:08:59,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 207. [2020-09-24 17:08:59,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-09-24 17:08:59,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 230 transitions. [2020-09-24 17:08:59,568 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 230 transitions. Word has length 62 [2020-09-24 17:08:59,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:08:59,571 INFO L479 AbstractCegarLoop]: Abstraction has 207 states and 230 transitions. [2020-09-24 17:08:59,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 17:08:59,571 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 230 transitions. [2020-09-24 17:08:59,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-24 17:08:59,572 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:08:59,572 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:08:59,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 17:08:59,573 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:08:59,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:08:59,573 INFO L82 PathProgramCache]: Analyzing trace with hash 852438762, now seen corresponding path program 1 times [2020-09-24 17:08:59,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:08:59,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2125137569] [2020-09-24 17:08:59,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:08:59,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:59,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:00,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:01,407 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:01,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 17:09:01,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:09:01,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1801 [2020-09-24 17:09:01,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:01,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:09:01,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 17:09:01,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 17:09:01,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:09:01,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:09:01,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:01,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:01,601 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:01,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:09:01,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:09:01,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 17:09:01,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:01,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:09:01,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:09:01,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:09:01,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:09:01,616 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 17:09:01,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2125137569] [2020-09-24 17:09:01,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:09:01,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 17:09:01,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652327361] [2020-09-24 17:09:01,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 17:09:01,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:09:01,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 17:09:01,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-24 17:09:01,620 INFO L87 Difference]: Start difference. First operand 207 states and 230 transitions. Second operand 11 states. [2020-09-24 17:09:02,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:09:02,239 INFO L93 Difference]: Finished difference Result 288 states and 315 transitions. [2020-09-24 17:09:02,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 17:09:02,240 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-09-24 17:09:02,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:09:02,242 INFO L225 Difference]: With dead ends: 288 [2020-09-24 17:09:02,242 INFO L226 Difference]: Without dead ends: 282 [2020-09-24 17:09:02,243 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 17:09:02,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-09-24 17:09:02,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 226. [2020-09-24 17:09:02,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-24 17:09:02,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 251 transitions. [2020-09-24 17:09:02,252 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 251 transitions. Word has length 67 [2020-09-24 17:09:02,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:09:02,252 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 251 transitions. [2020-09-24 17:09:02,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 17:09:02,253 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 251 transitions. [2020-09-24 17:09:02,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-24 17:09:02,254 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:09:02,254 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:09:02,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 17:09:02,254 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:09:02,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:09:02,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1742912072, now seen corresponding path program 1 times [2020-09-24 17:09:02,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:09:02,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1029110141] [2020-09-24 17:09:02,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:09:02,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:02,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:02,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:03,237 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:03,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 17:09:03,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:09:03,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 959 [2020-09-24 17:09:03,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:03,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:09:03,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 17:09:03,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 17:09:03,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:09:03,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:09:03,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:03,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:03,644 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:03,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:09:03,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:09:03,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:09:03,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:03,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:09:03,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:09:03,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:09:03,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:09:03,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 17:09:03,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1029110141] [2020-09-24 17:09:03,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:09:03,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 17:09:03,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67570075] [2020-09-24 17:09:03,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 17:09:03,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:09:03,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 17:09:03,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-09-24 17:09:03,666 INFO L87 Difference]: Start difference. First operand 226 states and 251 transitions. Second operand 15 states. [2020-09-24 17:09:05,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:09:05,111 INFO L93 Difference]: Finished difference Result 329 states and 361 transitions. [2020-09-24 17:09:05,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 17:09:05,111 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 67 [2020-09-24 17:09:05,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:09:05,114 INFO L225 Difference]: With dead ends: 329 [2020-09-24 17:09:05,114 INFO L226 Difference]: Without dead ends: 323 [2020-09-24 17:09:05,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=226, Invalid=766, Unknown=0, NotChecked=0, Total=992 [2020-09-24 17:09:05,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-09-24 17:09:05,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 238. [2020-09-24 17:09:05,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-09-24 17:09:05,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 264 transitions. [2020-09-24 17:09:05,126 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 264 transitions. Word has length 67 [2020-09-24 17:09:05,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:09:05,127 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 264 transitions. [2020-09-24 17:09:05,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 17:09:05,127 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 264 transitions. [2020-09-24 17:09:05,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-24 17:09:05,128 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:09:05,129 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:09:05,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 17:09:05,129 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:09:05,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:09:05,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1875154110, now seen corresponding path program 1 times [2020-09-24 17:09:05,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:09:05,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070782402] [2020-09-24 17:09:05,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:09:05,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:05,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:05,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:06,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:07,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:09,005 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:09,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 17:09:09,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 17:09:09,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3853 [2020-09-24 17:09:09,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:09,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 17:09:09,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 17:09:09,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 17:09:09,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:09:09,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:09:09,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:09,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:09,323 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:09,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:09:09,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:09:09,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 17:09:09,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:09,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:09:09,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:09:09,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:09:09,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:09:09,346 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 17:09:09,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070782402] [2020-09-24 17:09:09,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:09:09,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 17:09:09,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857544611] [2020-09-24 17:09:09,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 17:09:09,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:09:09,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 17:09:09,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-09-24 17:09:09,348 INFO L87 Difference]: Start difference. First operand 238 states and 264 transitions. Second operand 14 states. [2020-09-24 17:09:10,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:09:10,602 INFO L93 Difference]: Finished difference Result 308 states and 338 transitions. [2020-09-24 17:09:10,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-24 17:09:10,602 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 73 [2020-09-24 17:09:10,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:09:10,605 INFO L225 Difference]: With dead ends: 308 [2020-09-24 17:09:10,605 INFO L226 Difference]: Without dead ends: 302 [2020-09-24 17:09:10,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=123, Invalid=633, Unknown=0, NotChecked=0, Total=756 [2020-09-24 17:09:10,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-09-24 17:09:10,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 252. [2020-09-24 17:09:10,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-09-24 17:09:10,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 280 transitions. [2020-09-24 17:09:10,617 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 280 transitions. Word has length 73 [2020-09-24 17:09:10,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:09:10,617 INFO L479 AbstractCegarLoop]: Abstraction has 252 states and 280 transitions. [2020-09-24 17:09:10,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 17:09:10,618 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 280 transitions. [2020-09-24 17:09:10,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-24 17:09:10,619 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:09:10,619 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:09:10,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 17:09:10,619 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:09:10,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:09:10,620 INFO L82 PathProgramCache]: Analyzing trace with hash -838472334, now seen corresponding path program 1 times [2020-09-24 17:09:10,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:09:10,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918374547] [2020-09-24 17:09:10,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:09:10,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:10,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:11,346 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:11,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 17:09:11,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:09:11,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 703 [2020-09-24 17:09:11,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:11,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 17:09:11,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 17:09:11,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 17:09:11,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:09:11,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:09:11,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:11,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:11,597 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:11,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:09:11,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:09:11,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 17:09:11,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:11,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:09:11,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:09:11,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:09:11,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:09:11,614 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 17:09:11,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918374547] [2020-09-24 17:09:11,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:09:11,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 17:09:11,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920969700] [2020-09-24 17:09:11,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 17:09:11,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:09:11,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 17:09:11,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-24 17:09:11,617 INFO L87 Difference]: Start difference. First operand 252 states and 280 transitions. Second operand 16 states. [2020-09-24 17:09:12,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:09:12,960 INFO L93 Difference]: Finished difference Result 319 states and 350 transitions. [2020-09-24 17:09:12,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 17:09:12,961 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 73 [2020-09-24 17:09:12,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:09:12,964 INFO L225 Difference]: With dead ends: 319 [2020-09-24 17:09:12,964 INFO L226 Difference]: Without dead ends: 313 [2020-09-24 17:09:12,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-24 17:09:12,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-09-24 17:09:12,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 256. [2020-09-24 17:09:12,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-09-24 17:09:12,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 284 transitions. [2020-09-24 17:09:12,991 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 284 transitions. Word has length 73 [2020-09-24 17:09:12,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:09:12,992 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 284 transitions. [2020-09-24 17:09:12,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 17:09:12,992 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 284 transitions. [2020-09-24 17:09:12,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-24 17:09:12,993 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:09:12,994 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:09:12,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 17:09:12,994 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:09:12,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:09:12,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1654345840, now seen corresponding path program 1 times [2020-09-24 17:09:12,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:09:12,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264521868] [2020-09-24 17:09:12,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:09:13,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:13,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:13,717 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:13,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 17:09:13,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:09:13,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 702 [2020-09-24 17:09:13,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:13,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 17:09:13,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 17:09:13,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 17:09:13,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:09:14,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:09:14,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:14,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:14,038 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:14,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:09:14,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:09:14,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 17:09:14,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:14,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:09:14,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:09:14,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:09:14,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:09:14,054 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 17:09:14,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [264521868] [2020-09-24 17:09:14,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:09:14,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 17:09:14,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607802637] [2020-09-24 17:09:14,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 17:09:14,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:09:14,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 17:09:14,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-24 17:09:14,057 INFO L87 Difference]: Start difference. First operand 256 states and 284 transitions. Second operand 16 states. [2020-09-24 17:09:15,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:09:15,607 INFO L93 Difference]: Finished difference Result 331 states and 362 transitions. [2020-09-24 17:09:15,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 17:09:15,608 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 73 [2020-09-24 17:09:15,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:09:15,611 INFO L225 Difference]: With dead ends: 331 [2020-09-24 17:09:15,611 INFO L226 Difference]: Without dead ends: 325 [2020-09-24 17:09:15,612 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 17:09:15,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-09-24 17:09:15,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 258. [2020-09-24 17:09:15,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-09-24 17:09:15,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 287 transitions. [2020-09-24 17:09:15,622 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 287 transitions. Word has length 73 [2020-09-24 17:09:15,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:09:15,623 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 287 transitions. [2020-09-24 17:09:15,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 17:09:15,623 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 287 transitions. [2020-09-24 17:09:15,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-24 17:09:15,624 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:09:15,624 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:09:15,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 17:09:15,625 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:09:15,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:09:15,625 INFO L82 PathProgramCache]: Analyzing trace with hash -617664064, now seen corresponding path program 1 times [2020-09-24 17:09:15,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:09:15,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079525995] [2020-09-24 17:09:15,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:09:15,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:15,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:15,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:16,901 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:16,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 17:09:16,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:09:16,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1255 [2020-09-24 17:09:16,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:16,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 17:09:16,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 17:09:16,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 17:09:16,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:09:17,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:09:17,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:17,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:17,263 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:17,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:09:17,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:09:17,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 17:09:17,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:17,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:09:17,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:09:17,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:09:17,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:09:17,285 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 17:09:17,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079525995] [2020-09-24 17:09:17,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:09:17,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 17:09:17,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227742773] [2020-09-24 17:09:17,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 17:09:17,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:09:17,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 17:09:17,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-09-24 17:09:17,288 INFO L87 Difference]: Start difference. First operand 258 states and 287 transitions. Second operand 16 states. [2020-09-24 17:09:18,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:09:18,906 INFO L93 Difference]: Finished difference Result 336 states and 368 transitions. [2020-09-24 17:09:18,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 17:09:18,907 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 73 [2020-09-24 17:09:18,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:09:18,909 INFO L225 Difference]: With dead ends: 336 [2020-09-24 17:09:18,909 INFO L226 Difference]: Without dead ends: 330 [2020-09-24 17:09:18,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=174, Invalid=818, Unknown=0, NotChecked=0, Total=992 [2020-09-24 17:09:18,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-09-24 17:09:18,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 251. [2020-09-24 17:09:18,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-09-24 17:09:18,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 278 transitions. [2020-09-24 17:09:18,926 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 278 transitions. Word has length 73 [2020-09-24 17:09:18,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:09:18,927 INFO L479 AbstractCegarLoop]: Abstraction has 251 states and 278 transitions. [2020-09-24 17:09:18,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 17:09:18,927 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 278 transitions. [2020-09-24 17:09:18,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-24 17:09:18,928 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:09:18,928 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:09:18,929 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 17:09:18,929 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:09:18,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:09:18,929 INFO L82 PathProgramCache]: Analyzing trace with hash 342604767, now seen corresponding path program 2 times [2020-09-24 17:09:18,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:09:18,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771489766] [2020-09-24 17:09:18,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:09:18,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:18,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:19,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:21,545 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:21,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 17:09:21,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:09:21,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2591 [2020-09-24 17:09:21,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:21,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 17:09:21,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 17:09:21,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-24 17:09:21,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:09:21,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:09:21,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:21,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:21,862 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:21,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:09:21,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:09:21,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 17:09:21,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:21,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:09:21,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:09:21,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:09:21,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:09:21,873 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 17:09:21,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771489766] [2020-09-24 17:09:21,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:09:21,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-24 17:09:21,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651276255] [2020-09-24 17:09:21,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 17:09:21,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:09:21,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 17:09:21,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2020-09-24 17:09:21,875 INFO L87 Difference]: Start difference. First operand 251 states and 278 transitions. Second operand 18 states. [2020-09-24 17:09:23,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:09:23,535 INFO L93 Difference]: Finished difference Result 377 states and 413 transitions. [2020-09-24 17:09:23,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-24 17:09:23,536 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 78 [2020-09-24 17:09:23,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:09:23,539 INFO L225 Difference]: With dead ends: 377 [2020-09-24 17:09:23,539 INFO L226 Difference]: Without dead ends: 353 [2020-09-24 17:09:23,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=406, Invalid=1486, Unknown=0, NotChecked=0, Total=1892 [2020-09-24 17:09:23,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2020-09-24 17:09:23,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 272. [2020-09-24 17:09:23,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-09-24 17:09:23,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 301 transitions. [2020-09-24 17:09:23,551 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 301 transitions. Word has length 78 [2020-09-24 17:09:23,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:09:23,551 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 301 transitions. [2020-09-24 17:09:23,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 17:09:23,551 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 301 transitions. [2020-09-24 17:09:23,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-24 17:09:23,552 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:09:23,552 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:09:23,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 17:09:23,553 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:09:23,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:09:23,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1736898641, now seen corresponding path program 1 times [2020-09-24 17:09:23,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:09:23,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744704974] [2020-09-24 17:09:23,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:09:23,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:23,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:23,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:26,663 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:26,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 17:09:26,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:09:26,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3088 [2020-09-24 17:09:26,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:26,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 17:09:26,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 17:09:26,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-24 17:09:26,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:09:27,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:09:27,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:27,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:27,250 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:27,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:09:27,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:09:27,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:09:27,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:27,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:09:27,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:09:27,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:09:27,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:09:27,279 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 17:09:27,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744704974] [2020-09-24 17:09:27,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:09:27,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-24 17:09:27,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325393113] [2020-09-24 17:09:27,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-24 17:09:27,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:09:27,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-24 17:09:27,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2020-09-24 17:09:27,284 INFO L87 Difference]: Start difference. First operand 272 states and 301 transitions. Second operand 20 states. [2020-09-24 17:09:29,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:09:29,275 INFO L93 Difference]: Finished difference Result 380 states and 417 transitions. [2020-09-24 17:09:29,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 17:09:29,276 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 78 [2020-09-24 17:09:29,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:09:29,279 INFO L225 Difference]: With dead ends: 380 [2020-09-24 17:09:29,280 INFO L226 Difference]: Without dead ends: 374 [2020-09-24 17:09:29,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=349, Invalid=1457, Unknown=0, NotChecked=0, Total=1806 [2020-09-24 17:09:29,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2020-09-24 17:09:29,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 283. [2020-09-24 17:09:29,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2020-09-24 17:09:29,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 313 transitions. [2020-09-24 17:09:29,291 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 313 transitions. Word has length 78 [2020-09-24 17:09:29,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:09:29,291 INFO L479 AbstractCegarLoop]: Abstraction has 283 states and 313 transitions. [2020-09-24 17:09:29,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-24 17:09:29,291 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 313 transitions. [2020-09-24 17:09:29,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-24 17:09:29,292 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:09:29,293 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:09:29,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 17:09:29,293 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:09:29,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:09:29,293 INFO L82 PathProgramCache]: Analyzing trace with hash -858452193, now seen corresponding path program 2 times [2020-09-24 17:09:29,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:09:29,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324970193] [2020-09-24 17:09:29,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:09:29,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:29,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:29,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:31,457 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:31,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 17:09:31,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:09:31,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2143 [2020-09-24 17:09:31,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:31,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 17:09:31,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 17:09:31,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-24 17:09:31,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:09:31,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:09:31,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:31,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:31,772 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:31,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:09:31,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:09:31,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 17:09:31,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:31,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:09:31,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:09:31,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:09:31,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:09:31,795 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 17:09:31,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324970193] [2020-09-24 17:09:31,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:09:31,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-24 17:09:31,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530616853] [2020-09-24 17:09:31,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-24 17:09:31,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:09:31,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-24 17:09:31,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2020-09-24 17:09:31,798 INFO L87 Difference]: Start difference. First operand 283 states and 313 transitions. Second operand 20 states. [2020-09-24 17:09:32,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:09:32,996 INFO L93 Difference]: Finished difference Result 385 states and 423 transitions. [2020-09-24 17:09:32,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 17:09:32,997 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 78 [2020-09-24 17:09:32,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:09:32,999 INFO L225 Difference]: With dead ends: 385 [2020-09-24 17:09:32,999 INFO L226 Difference]: Without dead ends: 379 [2020-09-24 17:09:33,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=296, Invalid=1110, Unknown=0, NotChecked=0, Total=1406 [2020-09-24 17:09:33,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2020-09-24 17:09:33,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 283. [2020-09-24 17:09:33,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2020-09-24 17:09:33,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 313 transitions. [2020-09-24 17:09:33,011 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 313 transitions. Word has length 78 [2020-09-24 17:09:33,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:09:33,011 INFO L479 AbstractCegarLoop]: Abstraction has 283 states and 313 transitions. [2020-09-24 17:09:33,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-24 17:09:33,012 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 313 transitions. [2020-09-24 17:09:33,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-24 17:09:33,013 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:09:33,013 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:09:33,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 17:09:33,013 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:09:33,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:09:33,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1698374602, now seen corresponding path program 1 times [2020-09-24 17:09:33,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:09:33,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318194886] [2020-09-24 17:09:33,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:09:33,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:33,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:33,648 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:33,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-24 17:09:33,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:09:33,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 614 [2020-09-24 17:09:33,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:33,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 17:09:33,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 17:09:33,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 17:09:33,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:09:33,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:09:33,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:33,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:33,971 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:33,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:09:33,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:09:33,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 17:09:33,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:33,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:09:33,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:09:33,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:09:33,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:09:33,995 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 17:09:33,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318194886] [2020-09-24 17:09:33,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:09:33,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 17:09:33,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477808267] [2020-09-24 17:09:33,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 17:09:33,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:09:33,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 17:09:33,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-24 17:09:33,997 INFO L87 Difference]: Start difference. First operand 283 states and 313 transitions. Second operand 16 states. [2020-09-24 17:09:35,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:09:35,508 INFO L93 Difference]: Finished difference Result 348 states and 382 transitions. [2020-09-24 17:09:35,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-24 17:09:35,508 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 79 [2020-09-24 17:09:35,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:09:35,510 INFO L225 Difference]: With dead ends: 348 [2020-09-24 17:09:35,510 INFO L226 Difference]: Without dead ends: 333 [2020-09-24 17:09:35,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=203, Invalid=987, Unknown=0, NotChecked=0, Total=1190 [2020-09-24 17:09:35,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-09-24 17:09:35,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 289. [2020-09-24 17:09:35,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2020-09-24 17:09:35,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 319 transitions. [2020-09-24 17:09:35,526 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 319 transitions. Word has length 79 [2020-09-24 17:09:35,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:09:35,526 INFO L479 AbstractCegarLoop]: Abstraction has 289 states and 319 transitions. [2020-09-24 17:09:35,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 17:09:35,527 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 319 transitions. [2020-09-24 17:09:35,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-24 17:09:35,528 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:09:35,528 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:09:35,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-24 17:09:35,529 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:09:35,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:09:35,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1559910918, now seen corresponding path program 2 times [2020-09-24 17:09:35,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:09:35,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1021583203] [2020-09-24 17:09:35,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:09:35,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:35,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:36,189 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:36,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-24 17:09:36,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:09:36,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 635 [2020-09-24 17:09:36,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:36,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 17:09:36,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 17:09:36,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 17:09:36,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:09:36,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:09:36,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:36,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:36,505 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:36,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:09:36,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:09:36,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 17:09:36,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:36,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:09:36,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:09:36,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:09:36,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:09:36,518 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 17:09:36,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1021583203] [2020-09-24 17:09:36,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:09:36,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 17:09:36,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547110181] [2020-09-24 17:09:36,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 17:09:36,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:09:36,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 17:09:36,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-09-24 17:09:36,520 INFO L87 Difference]: Start difference. First operand 289 states and 319 transitions. Second operand 16 states. [2020-09-24 17:09:37,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:09:37,909 INFO L93 Difference]: Finished difference Result 330 states and 363 transitions. [2020-09-24 17:09:37,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 17:09:37,910 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 79 [2020-09-24 17:09:37,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:09:37,913 INFO L225 Difference]: With dead ends: 330 [2020-09-24 17:09:37,913 INFO L226 Difference]: Without dead ends: 300 [2020-09-24 17:09:37,914 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2020-09-24 17:09:37,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-09-24 17:09:37,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 278. [2020-09-24 17:09:37,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-09-24 17:09:37,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 307 transitions. [2020-09-24 17:09:37,922 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 307 transitions. Word has length 79 [2020-09-24 17:09:37,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:09:37,922 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 307 transitions. [2020-09-24 17:09:37,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 17:09:37,923 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 307 transitions. [2020-09-24 17:09:37,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-24 17:09:37,924 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:09:37,924 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:09:37,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-24 17:09:37,924 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:09:37,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:09:37,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1643861864, now seen corresponding path program 2 times [2020-09-24 17:09:37,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:09:37,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477065665] [2020-09-24 17:09:37,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:09:37,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:37,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:38,554 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:38,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-24 17:09:38,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:09:38,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 610 [2020-09-24 17:09:38,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:38,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 17:09:38,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 17:09:38,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 17:09:38,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:09:38,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:09:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:38,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:38,865 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:09:38,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 17:09:38,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:09:38,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 17:09:38,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:09:38,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:09:38,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:09:38,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:09:38,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:09:38,893 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 17:09:38,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477065665] [2020-09-24 17:09:38,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:09:38,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 17:09:38,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900045142] [2020-09-24 17:09:38,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 17:09:38,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:09:38,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 17:09:38,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-24 17:09:38,897 INFO L87 Difference]: Start difference. First operand 278 states and 307 transitions. Second operand 16 states. [2020-09-24 17:09:40,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:09:40,320 INFO L93 Difference]: Finished difference Result 349 states and 381 transitions. [2020-09-24 17:09:40,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-24 17:09:40,321 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 79 [2020-09-24 17:09:40,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:09:40,323 INFO L225 Difference]: With dead ends: 349 [2020-09-24 17:09:40,324 INFO L226 Difference]: Without dead ends: 328 [2020-09-24 17:09:40,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=203, Invalid=987, Unknown=0, NotChecked=0, Total=1190 [2020-09-24 17:09:40,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2020-09-24 17:09:40,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 271. [2020-09-24 17:09:40,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-09-24 17:09:40,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 299 transitions. [2020-09-24 17:09:40,333 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 299 transitions. Word has length 79 [2020-09-24 17:09:40,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:09:40,333 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 299 transitions. [2020-09-24 17:09:40,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 17:09:40,333 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 299 transitions. [2020-09-24 17:09:40,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-24 17:09:40,335 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:09:40,335 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 17:09:40,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-24 17:09:40,335 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:09:40,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:09:40,336 INFO L82 PathProgramCache]: Analyzing trace with hash 1971811736, now seen corresponding path program 1 times [2020-09-24 17:09:40,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:09:40,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731761918] [2020-09-24 17:09:40,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:09:40,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:09:40,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:09:40,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking...