/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:19:01,804 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:19:01,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:19:01,836 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:19:01,836 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:19:01,838 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:19:01,839 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:19:01,841 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:19:01,843 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:19:01,844 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:19:01,846 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:19:01,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:19:01,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:19:01,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:19:01,851 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:19:01,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:19:01,855 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:19:01,857 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:19:01,861 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:19:01,863 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:19:01,866 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:19:01,871 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:19:01,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:19:01,875 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:19:01,883 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:19:01,883 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:19:01,883 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:19:01,888 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:19:01,889 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:19:01,890 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:19:01,892 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:19:01,893 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:19:01,894 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:19:01,896 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:19:01,898 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:19:01,898 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:19:01,899 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:19:01,899 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:19:01,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:19:01,901 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:19:01,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:19:01,903 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 18:19:01,963 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:19:01,964 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:19:01,966 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:19:01,966 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:19:01,966 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:19:01,967 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:19:01,967 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:19:01,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:19:01,967 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:19:01,967 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:19:01,969 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:19:01,969 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:19:01,969 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:19:01,970 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:19:01,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:19:01,970 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:19:01,970 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:19:01,970 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:19:01,971 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:19:01,971 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:19:01,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:19:01,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:19:01,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:19:01,972 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:19:01,972 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:19:01,973 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:19:01,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:19:01,973 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:19:01,973 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:19:01,973 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 18:19:02,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:19:02,461 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:19:02,466 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:19:02,467 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:19:02,468 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:19:02,469 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-09-24 18:19:02,548 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ea708297/0298582ecccd44939cd1a3b4c8a449d6/FLAG98b4db519 [2020-09-24 18:19:03,143 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:19:03,144 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-09-24 18:19:03,160 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ea708297/0298582ecccd44939cd1a3b4c8a449d6/FLAG98b4db519 [2020-09-24 18:19:03,406 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ea708297/0298582ecccd44939cd1a3b4c8a449d6 [2020-09-24 18:19:03,420 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:19:03,425 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:19:03,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:19:03,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:19:03,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:19:03,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:19:03" (1/1) ... [2020-09-24 18:19:03,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63983835 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:03, skipping insertion in model container [2020-09-24 18:19:03,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:19:03" (1/1) ... [2020-09-24 18:19:03,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:19:03,503 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:19:04,103 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:19:04,121 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:19:04,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:19:04,238 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:19:04,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:04 WrapperNode [2020-09-24 18:19:04,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:19:04,240 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:19:04,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:19:04,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:19:04,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:04" (1/1) ... [2020-09-24 18:19:04,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:04" (1/1) ... [2020-09-24 18:19:04,280 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:04" (1/1) ... [2020-09-24 18:19:04,281 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:04" (1/1) ... [2020-09-24 18:19:04,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:04" (1/1) ... [2020-09-24 18:19:04,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:04" (1/1) ... [2020-09-24 18:19:04,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:04" (1/1) ... [2020-09-24 18:19:04,342 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:19:04,342 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:19:04,342 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:19:04,343 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:19:04,344 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:04" (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 18:19:04,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:19:04,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:19:04,422 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-24 18:19:04,422 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-24 18:19:04,422 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-24 18:19:04,422 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-09-24 18:19:04,422 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-09-24 18:19:04,423 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-09-24 18:19:04,424 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2020-09-24 18:19:04,424 INFO L138 BoogieDeclarations]: Found implementation of procedure _get_nondet_int [2020-09-24 18:19:04,424 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:19:04,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:19:04,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:19:04,425 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-24 18:19:04,425 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-24 18:19:04,426 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 18:19:04,426 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 18:19:04,427 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 18:19:04,427 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 18:19:04,427 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 18:19:04,428 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 18:19:04,429 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 18:19:04,429 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 18:19:04,430 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 18:19:04,431 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 18:19:04,432 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 18:19:04,432 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 18:19:04,432 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 18:19:04,432 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 18:19:04,433 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 18:19:04,433 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 18:19:04,433 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 18:19:04,433 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 18:19:04,433 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 18:19:04,433 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 18:19:04,433 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 18:19:04,434 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 18:19:04,434 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 18:19:04,434 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 18:19:04,434 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 18:19:04,434 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 18:19:04,434 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 18:19:04,434 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 18:19:04,435 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 18:19:04,435 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 18:19:04,435 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 18:19:04,435 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 18:19:04,435 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 18:19:04,435 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 18:19:04,436 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 18:19:04,436 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 18:19:04,436 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 18:19:04,436 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 18:19:04,437 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 18:19:04,437 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 18:19:04,437 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 18:19:04,437 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 18:19:04,437 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 18:19:04,438 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 18:19:04,438 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 18:19:04,439 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 18:19:04,439 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 18:19:04,439 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 18:19:04,439 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 18:19:04,439 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 18:19:04,440 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 18:19:04,440 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 18:19:04,441 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 18:19:04,441 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 18:19:04,441 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-24 18:19:04,441 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 18:19:04,442 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 18:19:04,442 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 18:19:04,442 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-24 18:19:04,442 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 18:19:04,442 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 18:19:04,442 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-24 18:19:04,443 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 18:19:04,443 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:19:04,443 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-24 18:19:04,443 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 18:19:04,443 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 18:19:04,443 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 18:19:04,444 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 18:19:04,444 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 18:19:04,444 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 18:19:04,444 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 18:19:04,444 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 18:19:04,444 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 18:19:04,445 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 18:19:04,445 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 18:19:04,445 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 18:19:04,445 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 18:19:04,445 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 18:19:04,445 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 18:19:04,446 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 18:19:04,446 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 18:19:04,446 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 18:19:04,446 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 18:19:04,446 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 18:19:04,446 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 18:19:04,447 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 18:19:04,447 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 18:19:04,447 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 18:19:04,447 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 18:19:04,447 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 18:19:04,447 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 18:19:04,448 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 18:19:04,448 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 18:19:04,448 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 18:19:04,448 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 18:19:04,448 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 18:19:04,448 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 18:19:04,448 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 18:19:04,449 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 18:19:04,449 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 18:19:04,449 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 18:19:04,449 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 18:19:04,449 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-24 18:19:04,449 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-09-24 18:19:04,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 18:19:04,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 18:19:04,450 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-09-24 18:19:04,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 18:19:04,450 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-09-24 18:19:04,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 18:19:04,451 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2020-09-24 18:19:04,451 INFO L130 BoogieDeclarations]: Found specification of procedure _get_nondet_int [2020-09-24 18:19:04,451 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:19:04,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 18:19:04,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-24 18:19:04,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:19:04,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:19:04,858 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-24 18:19:05,178 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:19:05,179 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-24 18:19:05,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:19:05 BoogieIcfgContainer [2020-09-24 18:19:05,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:19:05,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:19:05,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:19:05,191 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:19:05,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:19:03" (1/3) ... [2020-09-24 18:19:05,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33aeea24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:19:05, skipping insertion in model container [2020-09-24 18:19:05,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:04" (2/3) ... [2020-09-24 18:19:05,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33aeea24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:19:05, skipping insertion in model container [2020-09-24 18:19:05,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:19:05" (3/3) ... [2020-09-24 18:19:05,196 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_nondet_insert-1.i [2020-09-24 18:19:05,208 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:19:05,221 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:19:05,244 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:19:05,279 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:19:05,279 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:19:05,279 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:19:05,279 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:19:05,279 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:19:05,280 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:19:05,280 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:19:05,280 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:19:05,308 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states. [2020-09-24 18:19:05,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-24 18:19:05,320 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:05,322 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 18:19:05,323 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:05,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:05,331 INFO L82 PathProgramCache]: Analyzing trace with hash 422432984, now seen corresponding path program 1 times [2020-09-24 18:19:05,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:05,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55971850] [2020-09-24 18:19:05,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:05,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:05,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:05,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:05,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:05,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:05,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:05,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 18:19:05,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:19:05,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 481 [2020-09-24 18:19:05,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:05,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:05,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-24 18:19:05,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:05,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:19:06,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:06,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:06,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:06,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:06,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:19:06,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:06,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:19:06,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:06,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:06,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:06,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:06,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:06,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 18:19:06,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:06,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:06,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:06,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:06,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:19:06,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:19:06,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 18:19:06,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:06,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:06,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 18:19:06,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:06,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:06,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-24 18:19:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:06,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:06,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:06,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:06,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:19:06,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:19:06,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 18:19:06,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:06,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:06,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:06,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:06,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:06,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:19:06,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:06,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:06,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:06,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:06,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:19:06,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:19:06,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 18:19:06,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:06,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:06,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 18:19:06,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:06,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:06,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-24 18:19:06,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:06,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:06,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:06,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:19:06,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:06,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:19:06,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:06,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:06,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 18:19:06,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:06,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:06,232 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 18:19:06,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [55971850] [2020-09-24 18:19:06,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:19:06,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:19:06,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720941783] [2020-09-24 18:19:06,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:19:06,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:06,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:19:06,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:19:06,265 INFO L87 Difference]: Start difference. First operand 142 states. Second operand 4 states. [2020-09-24 18:19:06,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:19:06,670 INFO L93 Difference]: Finished difference Result 289 states and 337 transitions. [2020-09-24 18:19:06,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 18:19:06,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-09-24 18:19:06,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:19:06,699 INFO L225 Difference]: With dead ends: 289 [2020-09-24 18:19:06,699 INFO L226 Difference]: Without dead ends: 123 [2020-09-24 18:19:06,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:19:06,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-24 18:19:06,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 114. [2020-09-24 18:19:06,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-09-24 18:19:06,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 123 transitions. [2020-09-24 18:19:06,820 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 123 transitions. Word has length 54 [2020-09-24 18:19:06,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:19:06,820 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 123 transitions. [2020-09-24 18:19:06,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:19:06,821 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 123 transitions. [2020-09-24 18:19:06,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-24 18:19:06,825 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:06,825 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 18:19:06,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:19:06,826 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:06,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:06,827 INFO L82 PathProgramCache]: Analyzing trace with hash 333013349, now seen corresponding path program 1 times [2020-09-24 18:19:06,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:06,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251974547] [2020-09-24 18:19:06,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:06,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:06,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:06,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:07,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:07,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:07,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:07,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:08,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:08,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:11,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:11,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-24 18:19:11,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:19:11,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-24 18:19:11,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:11,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:19:11,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 18:19:11,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:19:11,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:11,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:11,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:11,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:11,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:11,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:19:11,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:11,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:19:11,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:11,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:11,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:11,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:11,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:11,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 18:19:11,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:11,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:11,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:12,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:12,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 18:19:12,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:19:12,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-24 18:19:12,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:12,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:19:12,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:19:12,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 18:19:12,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:12,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 18:19:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:12,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:12,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:12,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:19:12,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:12,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 18:19:12,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:12,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:12,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:19:12,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:12,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:12,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-24 18:19:12,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:12,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:12,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:12,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 18:19:12,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:12,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:19:12,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:12,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:12,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 18:19:12,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:12,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:12,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 18:19:12,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:12,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:12,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:12,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:19:12,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:12,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:19:12,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:12,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:12,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 18:19:12,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:12,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:12,219 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:19:12,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251974547] [2020-09-24 18:19:12,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:19:12,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 18:19:12,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345959332] [2020-09-24 18:19:12,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 18:19:12,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:12,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 18:19:12,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 18:19:12,225 INFO L87 Difference]: Start difference. First operand 114 states and 123 transitions. Second operand 9 states. [2020-09-24 18:19:13,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:19:13,193 INFO L93 Difference]: Finished difference Result 275 states and 301 transitions. [2020-09-24 18:19:13,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 18:19:13,194 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-09-24 18:19:13,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:19:13,199 INFO L225 Difference]: With dead ends: 275 [2020-09-24 18:19:13,199 INFO L226 Difference]: Without dead ends: 169 [2020-09-24 18:19:13,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=117, Invalid=225, Unknown=0, NotChecked=0, Total=342 [2020-09-24 18:19:13,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-09-24 18:19:13,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 134. [2020-09-24 18:19:13,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-09-24 18:19:13,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 145 transitions. [2020-09-24 18:19:13,241 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 145 transitions. Word has length 69 [2020-09-24 18:19:13,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:19:13,241 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 145 transitions. [2020-09-24 18:19:13,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 18:19:13,242 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 145 transitions. [2020-09-24 18:19:13,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-24 18:19:13,248 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:13,248 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:19:13,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:19:13,249 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:13,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:13,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1735568478, now seen corresponding path program 1 times [2020-09-24 18:19:13,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:13,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363294058] [2020-09-24 18:19:13,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:13,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:13,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:13,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:13,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:13,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:13,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:14,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:14,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:18,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:18,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-24 18:19:18,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:19:18,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 18:19:18,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:18,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 18:19:18,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 18:19:18,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 18:19:18,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:18,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:18,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:18,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:18,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:18,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:19:18,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:18,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:19:18,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:18,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:18,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:18,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:18,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:18,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 18:19:18,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:18,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:18,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:18,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 18:19:18,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:18,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 18:19:18,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:18,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:19:18,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:18,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 18:19:18,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:18,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 18:19:18,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:18,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:18,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:18,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:19:18,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:18,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 18:19:18,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:18,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:19:18,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:19:18,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 18:19:18,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:18,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-24 18:19:18,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:18,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:18,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:18,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 18:19:18,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:18,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:19:18,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:18,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:18,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 18:19:18,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:18,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:18,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-24 18:19:18,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:18,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:18,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:18,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:19:18,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:18,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:19:18,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:18,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:18,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 18:19:18,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:18,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:18,546 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:19:18,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363294058] [2020-09-24 18:19:18,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:19:18,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 18:19:18,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238481557] [2020-09-24 18:19:18,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 18:19:18,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:18,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 18:19:18,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:19:18,549 INFO L87 Difference]: Start difference. First operand 134 states and 145 transitions. Second operand 12 states. [2020-09-24 18:19:19,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:19:19,476 INFO L93 Difference]: Finished difference Result 292 states and 324 transitions. [2020-09-24 18:19:19,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 18:19:19,476 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 71 [2020-09-24 18:19:19,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:19:19,482 INFO L225 Difference]: With dead ends: 292 [2020-09-24 18:19:19,482 INFO L226 Difference]: Without dead ends: 206 [2020-09-24 18:19:19,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2020-09-24 18:19:19,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-09-24 18:19:19,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 154. [2020-09-24 18:19:19,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-09-24 18:19:19,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 168 transitions. [2020-09-24 18:19:19,533 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 168 transitions. Word has length 71 [2020-09-24 18:19:19,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:19:19,533 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 168 transitions. [2020-09-24 18:19:19,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 18:19:19,534 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 168 transitions. [2020-09-24 18:19:19,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-24 18:19:19,542 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:19,542 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1] [2020-09-24 18:19:19,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:19:19,543 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:19,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:19,546 INFO L82 PathProgramCache]: Analyzing trace with hash -472966004, now seen corresponding path program 1 times [2020-09-24 18:19:19,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:19,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151479284] [2020-09-24 18:19:19,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:19,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:19,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:19,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:19,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:19,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:20,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:20,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:20,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:20,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:20,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:20,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:21,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:21,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:21,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:21,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:22,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:22,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:22,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:22,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:23,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:23,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:23,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:23,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:23,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:23,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:23,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:24,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:24,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:24,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-24 18:19:24,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 27 [2020-09-24 18:19:24,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-24 18:19:24,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:24,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 18:19:24,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 18:19:24,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 18:19:24,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:24,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:24,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:24,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:24,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:24,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:19:24,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:24,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:19:24,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:24,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:24,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:24,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:24,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:24,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 18:19:24,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:24,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:24,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:24,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:24,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:19:24,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:19:24,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-24 18:19:24,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:24,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 18:19:24,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:19:24,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 18:19:24,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:19:24,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-24 18:19:24,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:24,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:24,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:24,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:19:24,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:24,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:19:24,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:24,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:24,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 18:19:24,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:24,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:24,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 18:19:24,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:24,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:24,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:24,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 18:19:24,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:24,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:19:24,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:24,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:24,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 18:19:24,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:24,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:24,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-24 18:19:24,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:24,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:24,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:24,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:19:24,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:24,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:19:24,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:24,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:24,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 18:19:24,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:24,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:24,961 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:19:24,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151479284] [2020-09-24 18:19:24,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:19:24,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 18:19:24,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108298983] [2020-09-24 18:19:24,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 18:19:24,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:24,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 18:19:24,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:19:24,964 INFO L87 Difference]: Start difference. First operand 154 states and 168 transitions. Second operand 11 states. [2020-09-24 18:19:25,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:19:25,988 INFO L93 Difference]: Finished difference Result 382 states and 424 transitions. [2020-09-24 18:19:25,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 18:19:25,989 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-09-24 18:19:25,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:19:25,992 INFO L225 Difference]: With dead ends: 382 [2020-09-24 18:19:25,992 INFO L226 Difference]: Without dead ends: 244 [2020-09-24 18:19:25,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=219, Invalid=431, Unknown=0, NotChecked=0, Total=650 [2020-09-24 18:19:25,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-09-24 18:19:26,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 161. [2020-09-24 18:19:26,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-09-24 18:19:26,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 175 transitions. [2020-09-24 18:19:26,011 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 175 transitions. Word has length 79 [2020-09-24 18:19:26,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:19:26,011 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 175 transitions. [2020-09-24 18:19:26,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 18:19:26,012 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 175 transitions. [2020-09-24 18:19:26,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-24 18:19:26,013 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:26,013 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:19:26,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:19:26,014 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:26,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:26,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1820928426, now seen corresponding path program 1 times [2020-09-24 18:19:26,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:26,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46449904] [2020-09-24 18:19:26,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:26,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:26,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:26,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:26,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:26,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:26,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:26,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:28,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:29,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:31,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:31,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-24 18:19:31,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:19:31,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-24 18:19:31,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:31,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 18:19:31,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-24 18:19:31,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 18:19:31,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:31,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:31,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:31,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:31,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:31,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:19:31,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:31,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:19:31,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:31,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:31,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:31,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:31,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:31,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 18:19:31,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:31,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:31,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:31,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 18:19:31,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:31,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:19:31,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:31,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:31,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:31,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:31,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:31,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 18:19:31,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:31,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:31,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:31,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:31,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 18:19:31,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:19:31,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-09-24 18:19:31,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:31,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:19:31,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:31,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 18:19:31,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:31,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 18:19:31,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:31,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:31,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:31,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 18:19:31,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:31,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 18:19:31,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:31,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:19:31,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:31,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 18:19:31,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:31,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-24 18:19:31,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:31,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:31,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:31,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:19:31,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:31,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 18:19:31,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:31,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:19:31,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:19:31,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:19:31,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:31,444 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 18:19:31,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [46449904] [2020-09-24 18:19:31,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:19:31,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-24 18:19:31,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787118932] [2020-09-24 18:19:31,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 18:19:31,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:31,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 18:19:31,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:19:31,447 INFO L87 Difference]: Start difference. First operand 161 states and 175 transitions. Second operand 12 states. [2020-09-24 18:19:32,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:19:32,312 INFO L93 Difference]: Finished difference Result 211 states and 231 transitions. [2020-09-24 18:19:32,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 18:19:32,312 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 80 [2020-09-24 18:19:32,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:19:32,314 INFO L225 Difference]: With dead ends: 211 [2020-09-24 18:19:32,315 INFO L226 Difference]: Without dead ends: 205 [2020-09-24 18:19:32,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2020-09-24 18:19:32,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-09-24 18:19:32,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 181. [2020-09-24 18:19:32,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-09-24 18:19:32,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 200 transitions. [2020-09-24 18:19:32,338 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 200 transitions. Word has length 80 [2020-09-24 18:19:32,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:19:32,339 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 200 transitions. [2020-09-24 18:19:32,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 18:19:32,339 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 200 transitions. [2020-09-24 18:19:32,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-24 18:19:32,340 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:32,341 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:19:32,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:19:32,341 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:32,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:32,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1107353865, now seen corresponding path program 2 times [2020-09-24 18:19:32,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:32,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1587305980] [2020-09-24 18:19:32,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:32,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:32,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:32,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:32,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:32,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:32,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:33,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:33,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:37,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:37,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-24 18:19:37,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:19:37,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 18:19:37,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:37,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 18:19:37,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 18:19:37,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 18:19:37,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:37,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:37,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:37,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:37,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:37,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:19:37,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:37,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:19:37,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:37,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:37,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:37,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:37,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:37,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 18:19:37,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:37,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:37,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:37,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 18:19:37,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:37,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-24 18:19:37,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:37,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 18:19:37,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:37,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 18:19:37,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:37,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-24 18:19:37,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:37,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:37,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:37,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 18:19:37,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:37,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 18:19:37,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:37,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:19:37,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:19:37,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 18:19:37,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:37,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-24 18:19:37,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:37,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:37,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:37,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 18:19:37,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:37,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:19:37,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:37,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:37,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 18:19:37,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:37,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:37,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-24 18:19:37,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:37,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:37,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:37,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:19:37,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:37,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:19:37,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:37,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:37,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 18:19:37,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:37,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:37,705 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:19:37,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1587305980] [2020-09-24 18:19:37,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:19:37,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 18:19:37,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783303992] [2020-09-24 18:19:37,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 18:19:37,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:37,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 18:19:37,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-09-24 18:19:37,708 INFO L87 Difference]: Start difference. First operand 181 states and 200 transitions. Second operand 14 states. [2020-09-24 18:19:39,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:19:39,370 INFO L93 Difference]: Finished difference Result 394 states and 450 transitions. [2020-09-24 18:19:39,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-24 18:19:39,371 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 81 [2020-09-24 18:19:39,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:19:39,373 INFO L225 Difference]: With dead ends: 394 [2020-09-24 18:19:39,374 INFO L226 Difference]: Without dead ends: 270 [2020-09-24 18:19:39,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=195, Invalid=927, Unknown=0, NotChecked=0, Total=1122 [2020-09-24 18:19:39,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-09-24 18:19:39,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 184. [2020-09-24 18:19:39,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-09-24 18:19:39,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 203 transitions. [2020-09-24 18:19:39,394 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 203 transitions. Word has length 81 [2020-09-24 18:19:39,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:19:39,395 INFO L479 AbstractCegarLoop]: Abstraction has 184 states and 203 transitions. [2020-09-24 18:19:39,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 18:19:39,395 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 203 transitions. [2020-09-24 18:19:39,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-24 18:19:39,396 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:39,397 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:19:39,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:19:39,397 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:39,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:39,397 INFO L82 PathProgramCache]: Analyzing trace with hash 211372789, now seen corresponding path program 1 times [2020-09-24 18:19:39,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:39,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116959759] [2020-09-24 18:19:39,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:39,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:39,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:39,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:39,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:39,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:39,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:40,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:40,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:44,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:44,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-24 18:19:44,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:19:44,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 18:19:44,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:44,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 18:19:44,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 18:19:44,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 18:19:44,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:44,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:44,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:44,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:44,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:44,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:19:44,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:44,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:19:44,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:44,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:44,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:44,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:44,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:44,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 18:19:44,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:44,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:44,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:44,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 18:19:44,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:44,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 18:19:44,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:44,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:19:44,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:44,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 18:19:44,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:44,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 18:19:44,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:44,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:44,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:44,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:44,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 18:19:44,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:19:44,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-24 18:19:44,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:44,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:19:44,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:44,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 18:19:44,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:44,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 18:19:44,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:44,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:44,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:44,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:44,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 18:19:44,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:19:44,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 18:19:44,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:44,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:19:44,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:19:44,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 18:19:44,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:44,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-24 18:19:44,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:44,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:44,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:44,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 18:19:44,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:44,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:19:44,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:44,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:44,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 18:19:44,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:44,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:44,864 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 18:19:44,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116959759] [2020-09-24 18:19:44,865 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:19:44,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 18:19:44,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500030331] [2020-09-24 18:19:44,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 18:19:44,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:44,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 18:19:44,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-09-24 18:19:44,867 INFO L87 Difference]: Start difference. First operand 184 states and 203 transitions. Second operand 13 states. [2020-09-24 18:19:46,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:19:46,080 INFO L93 Difference]: Finished difference Result 372 states and 428 transitions. [2020-09-24 18:19:46,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 18:19:46,081 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 87 [2020-09-24 18:19:46,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:19:46,085 INFO L225 Difference]: With dead ends: 372 [2020-09-24 18:19:46,086 INFO L226 Difference]: Without dead ends: 276 [2020-09-24 18:19:46,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=184, Invalid=572, Unknown=0, NotChecked=0, Total=756 [2020-09-24 18:19:46,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-09-24 18:19:46,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 214. [2020-09-24 18:19:46,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-09-24 18:19:46,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 240 transitions. [2020-09-24 18:19:46,116 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 240 transitions. Word has length 87 [2020-09-24 18:19:46,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:19:46,117 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 240 transitions. [2020-09-24 18:19:46,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 18:19:46,117 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 240 transitions. [2020-09-24 18:19:46,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-24 18:19:46,119 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:46,119 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:19:46,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 18:19:46,120 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:46,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:46,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1804595944, now seen corresponding path program 1 times [2020-09-24 18:19:46,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:46,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [889692732] [2020-09-24 18:19:46,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:46,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:46,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:46,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:47,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking...