/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 SequenceOfStatements --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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/heap-data/packet_filter.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:25:13,462 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:25:13,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:25:13,489 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:25:13,489 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:25:13,490 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:25:13,491 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:25:13,493 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:25:13,495 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:25:13,496 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:25:13,497 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:25:13,498 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:25:13,498 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:25:13,499 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:25:13,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:25:13,501 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:25:13,502 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:25:13,503 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:25:13,505 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:25:13,506 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:25:13,508 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:25:13,509 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:25:13,510 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:25:13,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:25:13,514 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:25:13,514 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:25:13,514 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:25:13,515 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:25:13,515 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:25:13,516 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:25:13,517 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:25:13,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:25:13,518 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:25:13,519 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:25:13,520 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:25:13,520 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:25:13,521 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:25:13,521 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:25:13,524 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:25:13,525 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:25:13,526 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:25:13,527 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 [2020-10-13 10:25:13,576 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:25:13,576 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:25:13,577 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:25:13,578 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:25:13,578 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:25:13,579 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:25:13,579 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:25:13,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:25:13,580 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:25:13,580 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:25:13,580 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:25:13,580 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:25:13,580 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:25:13,581 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:25:13,581 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:25:13,581 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:25:13,581 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:25:13,581 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:25:13,582 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:25:13,582 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:25:13,584 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:25:13,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:25:13,585 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:25:13,585 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:25:13,585 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:25:13,585 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:25:13,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:25:13,585 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:25:13,586 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:25:13,586 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 -> SequenceOfStatements 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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 10:25:13,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:25:13,955 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:25:13,963 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:25:13,966 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:25:13,966 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:25:13,967 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-data/packet_filter.i [2020-10-13 10:25:14,040 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5020b413c/024a9f4bb00b499080a0ecfdd484c2ee/FLAG55c313f8a [2020-10-13 10:25:14,574 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:25:14,575 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-data/packet_filter.i [2020-10-13 10:25:14,588 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5020b413c/024a9f4bb00b499080a0ecfdd484c2ee/FLAG55c313f8a [2020-10-13 10:25:14,871 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5020b413c/024a9f4bb00b499080a0ecfdd484c2ee [2020-10-13 10:25:14,879 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:25:14,881 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:25:14,882 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:25:14,882 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:25:14,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:25:14,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:25:14" (1/1) ... [2020-10-13 10:25:14,889 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@722dc2de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:25:14, skipping insertion in model container [2020-10-13 10:25:14,890 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:25:14" (1/1) ... [2020-10-13 10:25:14,897 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:25:14,943 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:25:15,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:25:15,389 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:25:15,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:25:15,510 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:25:15,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:25:15 WrapperNode [2020-10-13 10:25:15,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:25:15,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:25:15,512 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:25:15,512 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:25:15,525 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:25:15" (1/1) ... [2020-10-13 10:25:15,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:25:15" (1/1) ... [2020-10-13 10:25:15,544 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:25:15" (1/1) ... [2020-10-13 10:25:15,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:25:15" (1/1) ... [2020-10-13 10:25:15,570 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:25:15" (1/1) ... [2020-10-13 10:25:15,576 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:25:15" (1/1) ... [2020-10-13 10:25:15,580 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:25:15" (1/1) ... [2020-10-13 10:25:15,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:25:15,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:25:15,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:25:15,588 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:25:15,589 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:25:15" (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 [2020-10-13 10:25:15,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:25:15,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:25:15,650 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-13 10:25:15,650 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-13 10:25:15,650 INFO L138 BoogieDeclarations]: Found implementation of procedure receive [2020-10-13 10:25:15,650 INFO L138 BoogieDeclarations]: Found implementation of procedure send [2020-10-13 10:25:15,650 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_queue [2020-10-13 10:25:15,650 INFO L138 BoogieDeclarations]: Found implementation of procedure process_prio_queue [2020-10-13 10:25:15,651 INFO L138 BoogieDeclarations]: Found implementation of procedure process_normal_queue [2020-10-13 10:25:15,651 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:25:15,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-13 10:25:15,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 10:25:15,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_charp [2020-10-13 10:25:15,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:25:15,652 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-13 10:25:15,652 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-13 10:25:15,652 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-13 10:25:15,652 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-13 10:25:15,652 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-13 10:25:15,652 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-13 10:25:15,653 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-13 10:25:15,653 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-13 10:25:15,653 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-13 10:25:15,653 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-13 10:25:15,653 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-13 10:25:15,653 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-13 10:25:15,654 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-13 10:25:15,654 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-13 10:25:15,654 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-13 10:25:15,654 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-13 10:25:15,654 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-13 10:25:15,654 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-13 10:25:15,655 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-13 10:25:15,655 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-13 10:25:15,655 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-13 10:25:15,655 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-13 10:25:15,655 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-13 10:25:15,655 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-13 10:25:15,655 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-13 10:25:15,656 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-13 10:25:15,656 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-13 10:25:15,656 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-13 10:25:15,656 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-13 10:25:15,656 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-13 10:25:15,656 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-13 10:25:15,656 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-13 10:25:15,657 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-13 10:25:15,657 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-13 10:25:15,657 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-13 10:25:15,657 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-13 10:25:15,657 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-13 10:25:15,657 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-13 10:25:15,658 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-13 10:25:15,658 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-13 10:25:15,658 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-13 10:25:15,658 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-13 10:25:15,658 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-13 10:25:15,658 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-13 10:25:15,658 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-13 10:25:15,659 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-13 10:25:15,659 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-13 10:25:15,659 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-13 10:25:15,659 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-13 10:25:15,659 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-13 10:25:15,659 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-13 10:25:15,660 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-13 10:25:15,660 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 10:25:15,660 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-13 10:25:15,660 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-13 10:25:15,660 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-13 10:25:15,660 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-13 10:25:15,660 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-13 10:25:15,660 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-13 10:25:15,661 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-13 10:25:15,661 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-13 10:25:15,661 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 10:25:15,661 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-13 10:25:15,661 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-13 10:25:15,661 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-13 10:25:15,662 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 10:25:15,662 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-13 10:25:15,662 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-13 10:25:15,662 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-13 10:25:15,662 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-13 10:25:15,662 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-13 10:25:15,662 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-13 10:25:15,663 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-13 10:25:15,663 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-13 10:25:15,663 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-13 10:25:15,663 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-13 10:25:15,663 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-13 10:25:15,663 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-13 10:25:15,664 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-13 10:25:15,664 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-13 10:25:15,664 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-13 10:25:15,664 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-13 10:25:15,664 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-13 10:25:15,664 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-13 10:25:15,664 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-13 10:25:15,665 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-13 10:25:15,665 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-13 10:25:15,665 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-13 10:25:15,665 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-13 10:25:15,665 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-13 10:25:15,665 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-13 10:25:15,665 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-13 10:25:15,665 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-13 10:25:15,666 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-13 10:25:15,666 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-13 10:25:15,666 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-13 10:25:15,666 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-13 10:25:15,666 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-13 10:25:15,666 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-13 10:25:15,666 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-13 10:25:15,667 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-13 10:25:15,667 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-13 10:25:15,667 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-13 10:25:15,667 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-13 10:25:15,667 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-13 10:25:15,667 INFO L130 BoogieDeclarations]: Found specification of procedure receive [2020-10-13 10:25:15,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 10:25:15,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 10:25:15,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-13 10:25:15,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 10:25:15,668 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-13 10:25:15,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:25:15,668 INFO L130 BoogieDeclarations]: Found specification of procedure send [2020-10-13 10:25:15,669 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_queue [2020-10-13 10:25:15,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 10:25:15,669 INFO L130 BoogieDeclarations]: Found specification of procedure process_prio_queue [2020-10-13 10:25:15,669 INFO L130 BoogieDeclarations]: Found specification of procedure process_normal_queue [2020-10-13 10:25:15,669 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:25:15,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-13 10:25:15,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-13 10:25:15,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:25:15,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:25:16,332 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:25:16,332 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-13 10:25:16,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:25:16 BoogieIcfgContainer [2020-10-13 10:25:16,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:25:16,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:25:16,343 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:25:16,348 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:25:16,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:25:14" (1/3) ... [2020-10-13 10:25:16,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@214553a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:25:16, skipping insertion in model container [2020-10-13 10:25:16,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:25:15" (2/3) ... [2020-10-13 10:25:16,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@214553a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:25:16, skipping insertion in model container [2020-10-13 10:25:16,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:25:16" (3/3) ... [2020-10-13 10:25:16,354 INFO L109 eAbstractionObserver]: Analyzing ICFG packet_filter.i [2020-10-13 10:25:16,364 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:25:16,374 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-10-13 10:25:16,389 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-13 10:25:16,418 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:25:16,418 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:25:16,418 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:25:16,419 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:25:16,419 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:25:16,419 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:25:16,419 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:25:16,420 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:25:16,441 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2020-10-13 10:25:16,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-13 10:25:16,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:16,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:25:16,451 INFO L427 AbstractCegarLoop]: === Iteration 1 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:16,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:16,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1068933411, now seen corresponding path program 1 times [2020-10-13 10:25:16,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:16,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411625447] [2020-10-13 10:25:16,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:16,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:16,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:16,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:16,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:17,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:17,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 10:25:17,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:25:17,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 498 [2020-10-13 10:25:17,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:17,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:17,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 10:25:17,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:17,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 10:25:17,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:17,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:17,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:17,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:17,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:17,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:17,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:25:17,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:17,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:17,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:17,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:17,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:17,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:25:17,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411625447] [2020-10-13 10:25:17,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:25:17,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 10:25:17,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898212493] [2020-10-13 10:25:17,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 10:25:17,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:17,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 10:25:17,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 10:25:17,225 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 3 states. [2020-10-13 10:25:17,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:17,423 INFO L93 Difference]: Finished difference Result 100 states and 126 transitions. [2020-10-13 10:25:17,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 10:25:17,425 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-13 10:25:17,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:17,436 INFO L225 Difference]: With dead ends: 100 [2020-10-13 10:25:17,436 INFO L226 Difference]: Without dead ends: 57 [2020-10-13 10:25:17,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 10:25:17,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-13 10:25:17,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-10-13 10:25:17,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-13 10:25:17,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2020-10-13 10:25:17,494 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 14 [2020-10-13 10:25:17,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:17,495 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2020-10-13 10:25:17,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 10:25:17,495 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2020-10-13 10:25:17,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-13 10:25:17,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:17,497 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:25:17,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:25:17,497 INFO L427 AbstractCegarLoop]: === Iteration 2 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:17,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:17,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1316192133, now seen corresponding path program 1 times [2020-10-13 10:25:17,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:17,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994171677] [2020-10-13 10:25:17,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:17,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:17,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:17,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:17,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:17,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 10:25:17,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:25:17,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-13 10:25:17,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:17,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:25:17,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 10:25:17,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 10:25:17,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:17,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:17,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:17,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:17,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:17,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:17,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:25:17,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:17,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:17,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:17,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:17,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:17,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:25:17,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994171677] [2020-10-13 10:25:17,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:25:17,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:25:17,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340312809] [2020-10-13 10:25:17,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:25:17,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:17,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:25:17,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:25:17,733 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand 4 states. [2020-10-13 10:25:17,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:17,989 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2020-10-13 10:25:17,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:25:17,989 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-13 10:25:17,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:17,991 INFO L225 Difference]: With dead ends: 60 [2020-10-13 10:25:17,991 INFO L226 Difference]: Without dead ends: 58 [2020-10-13 10:25:17,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:25:17,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-13 10:25:18,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-10-13 10:25:18,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-13 10:25:18,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2020-10-13 10:25:18,006 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 15 [2020-10-13 10:25:18,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:18,006 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2020-10-13 10:25:18,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:25:18,007 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2020-10-13 10:25:18,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-13 10:25:18,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:18,008 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:25:18,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:25:18,008 INFO L427 AbstractCegarLoop]: === Iteration 3 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:18,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:18,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1316190211, now seen corresponding path program 1 times [2020-10-13 10:25:18,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:18,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483657049] [2020-10-13 10:25:18,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:18,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:18,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:18,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:18,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 10:25:18,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:18,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-13 10:25:18,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:18,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:25:18,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:25:18,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:25:18,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:18,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:18,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:18,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:18,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:18,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:18,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:18,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:25:18,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:18,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:18,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:18,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:18,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 10:25:18,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:25:18,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483657049] [2020-10-13 10:25:18,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:25:18,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 10:25:18,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272415688] [2020-10-13 10:25:18,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 10:25:18,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:18,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 10:25:18,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:25:18,282 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand 7 states. [2020-10-13 10:25:18,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:18,827 INFO L93 Difference]: Finished difference Result 95 states and 113 transitions. [2020-10-13 10:25:18,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 10:25:18,828 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-13 10:25:18,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:18,832 INFO L225 Difference]: With dead ends: 95 [2020-10-13 10:25:18,833 INFO L226 Difference]: Without dead ends: 68 [2020-10-13 10:25:18,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:25:18,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-13 10:25:18,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2020-10-13 10:25:18,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-13 10:25:18,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 78 transitions. [2020-10-13 10:25:18,864 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 78 transitions. Word has length 15 [2020-10-13 10:25:18,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:18,871 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 78 transitions. [2020-10-13 10:25:18,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 10:25:18,871 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions. [2020-10-13 10:25:18,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 10:25:18,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:18,872 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:25:18,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 10:25:18,873 INFO L427 AbstractCegarLoop]: === Iteration 4 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:18,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:18,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1729106577, now seen corresponding path program 1 times [2020-10-13 10:25:18,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:18,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922466398] [2020-10-13 10:25:18,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:18,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:18,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:19,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:19,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 10:25:19,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:19,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-13 10:25:19,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:19,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:25:19,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:25:19,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 10:25:19,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:19,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:19,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:19,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:19,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:19,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:19,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:19,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:25:19,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:19,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:19,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:19,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:19,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:19,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 10:25:19,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:19,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:19,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:19,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:25:19,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:19,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 10:25:19,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:19,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:25:19,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:25:19,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:25:19,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:19,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:25:19,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1922466398] [2020-10-13 10:25:19,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:25:19,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 10:25:19,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638204430] [2020-10-13 10:25:19,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:25:19,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:19,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:25:19,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:25:19,248 INFO L87 Difference]: Start difference. First operand 66 states and 78 transitions. Second operand 9 states. [2020-10-13 10:25:19,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:19,921 INFO L93 Difference]: Finished difference Result 100 states and 119 transitions. [2020-10-13 10:25:19,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 10:25:19,922 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-10-13 10:25:19,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:19,925 INFO L225 Difference]: With dead ends: 100 [2020-10-13 10:25:19,925 INFO L226 Difference]: Without dead ends: 78 [2020-10-13 10:25:19,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:25:19,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-13 10:25:19,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 60. [2020-10-13 10:25:19,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-13 10:25:19,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2020-10-13 10:25:19,944 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 21 [2020-10-13 10:25:19,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:19,945 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2020-10-13 10:25:19,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:25:19,945 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2020-10-13 10:25:19,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-13 10:25:19,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:19,947 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:25:19,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 10:25:19,947 INFO L427 AbstractCegarLoop]: === Iteration 5 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:19,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:19,948 INFO L82 PathProgramCache]: Analyzing trace with hash 453892566, now seen corresponding path program 1 times [2020-10-13 10:25:19,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:19,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832685193] [2020-10-13 10:25:19,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:19,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:20,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:20,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:20,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 10:25:20,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:20,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 408 [2020-10-13 10:25:20,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:20,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:25:20,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:25:20,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 10:25:20,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:20,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:20,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:20,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:20,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:20,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:20,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:20,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:25:20,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:20,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:20,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:20,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:20,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:20,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 10:25:20,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:20,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:20,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:20,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:25:20,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:20,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 10:25:20,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:20,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:25:20,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:25:20,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:25:20,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:20,987 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-10-13 10:25:20,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:25:20,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832685193] [2020-10-13 10:25:20,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:25:20,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 10:25:20,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57011346] [2020-10-13 10:25:20,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 10:25:20,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:20,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 10:25:20,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:25:20,998 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand 11 states. [2020-10-13 10:25:21,273 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-13 10:25:21,529 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-10-13 10:25:22,658 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-13 10:25:23,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:23,284 INFO L93 Difference]: Finished difference Result 145 states and 180 transitions. [2020-10-13 10:25:23,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 10:25:23,285 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2020-10-13 10:25:23,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:23,287 INFO L225 Difference]: With dead ends: 145 [2020-10-13 10:25:23,287 INFO L226 Difference]: Without dead ends: 118 [2020-10-13 10:25:23,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2020-10-13 10:25:23,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-13 10:25:23,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 72. [2020-10-13 10:25:23,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-13 10:25:23,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 86 transitions. [2020-10-13 10:25:23,304 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 86 transitions. Word has length 26 [2020-10-13 10:25:23,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:23,305 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 86 transitions. [2020-10-13 10:25:23,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 10:25:23,305 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 86 transitions. [2020-10-13 10:25:23,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 10:25:23,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:23,306 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:25:23,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 10:25:23,307 INFO L427 AbstractCegarLoop]: === Iteration 6 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:23,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:23,307 INFO L82 PathProgramCache]: Analyzing trace with hash -845629304, now seen corresponding path program 1 times [2020-10-13 10:25:23,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:23,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [247115847] [2020-10-13 10:25:23,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:23,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:23,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:23,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:23,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 10:25:23,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:23,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-10-13 10:25:23,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:23,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:25:23,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:25:23,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 10:25:23,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:23,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:23,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:23,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:23,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:23,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:23,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:23,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:25:23,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:23,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:23,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:23,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:23,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:23,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 10:25:23,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:23,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:23,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:23,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:25:23,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:23,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 10:25:23,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:23,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:25:23,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:25:23,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:25:23,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:24,118 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-10-13 10:25:24,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 10:25:24,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:24,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:24,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:24,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:25:24,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:24,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 10:25:24,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:24,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:25:24,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:25:24,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:25:24,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:24,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:25:24,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [247115847] [2020-10-13 10:25:24,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:25:24,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 10:25:24,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104223435] [2020-10-13 10:25:24,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 10:25:24,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:24,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 10:25:24,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-13 10:25:24,172 INFO L87 Difference]: Start difference. First operand 72 states and 86 transitions. Second operand 12 states. [2020-10-13 10:25:25,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:25,893 INFO L93 Difference]: Finished difference Result 132 states and 163 transitions. [2020-10-13 10:25:25,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 10:25:25,893 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2020-10-13 10:25:25,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:25,896 INFO L225 Difference]: With dead ends: 132 [2020-10-13 10:25:25,896 INFO L226 Difference]: Without dead ends: 110 [2020-10-13 10:25:25,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:25:25,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-13 10:25:25,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 66. [2020-10-13 10:25:25,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-13 10:25:25,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 79 transitions. [2020-10-13 10:25:25,909 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 79 transitions. Word has length 32 [2020-10-13 10:25:25,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:25,909 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 79 transitions. [2020-10-13 10:25:25,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 10:25:25,909 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 79 transitions. [2020-10-13 10:25:25,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 10:25:25,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:25,910 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:25:25,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 10:25:25,911 INFO L427 AbstractCegarLoop]: === Iteration 7 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:25,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:25,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1958551269, now seen corresponding path program 1 times [2020-10-13 10:25:25,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:25,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118658415] [2020-10-13 10:25:25,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:25,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:25,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:26,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:27,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:27,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 10:25:27,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:25:27,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2004 [2020-10-13 10:25:27,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:27,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:25:27,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 10:25:27,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:25:27,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:28,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:28,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:28,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:28,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:28,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:28,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:28,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:25:28,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:28,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:28,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:28,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:28,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:28,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 10:25:28,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:28,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:28,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:28,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:25:28,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:28,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 10:25:28,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:28,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:25:28,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:28,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:25:28,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:28,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 10:25:28,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:28,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:28,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:28,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:28,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:28,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 10:25:28,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:28,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:28,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:25:28,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:28,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:28,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:25:28,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118658415] [2020-10-13 10:25:28,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:25:28,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 10:25:28,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007936210] [2020-10-13 10:25:28,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:25:28,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:28,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:25:28,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:25:28,177 INFO L87 Difference]: Start difference. First operand 66 states and 79 transitions. Second operand 9 states. [2020-10-13 10:25:28,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:28,880 INFO L93 Difference]: Finished difference Result 148 states and 184 transitions. [2020-10-13 10:25:28,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 10:25:28,881 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-10-13 10:25:28,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:28,882 INFO L225 Difference]: With dead ends: 148 [2020-10-13 10:25:28,883 INFO L226 Difference]: Without dead ends: 96 [2020-10-13 10:25:28,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:25:28,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-13 10:25:28,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 74. [2020-10-13 10:25:28,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-13 10:25:28,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 90 transitions. [2020-10-13 10:25:28,894 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 90 transitions. Word has length 32 [2020-10-13 10:25:28,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:28,894 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 90 transitions. [2020-10-13 10:25:28,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:25:28,895 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 90 transitions. [2020-10-13 10:25:28,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 10:25:28,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:28,896 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:25:28,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 10:25:28,897 INFO L427 AbstractCegarLoop]: === Iteration 8 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:28,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:28,897 INFO L82 PathProgramCache]: Analyzing trace with hash -2117561309, now seen corresponding path program 1 times [2020-10-13 10:25:28,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:28,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634597417] [2020-10-13 10:25:28,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:28,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:29,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:30,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:30,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 10:25:30,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:25:30,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1630 [2020-10-13 10:25:30,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:30,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 10:25:30,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:25:30,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 10:25:30,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:25:30,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:30,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:30,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:30,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:30,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:30,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:25:30,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:30,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:30,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:30,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:30,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:30,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 10:25:30,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:30,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:30,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:30,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:25:30,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:30,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 10:25:30,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:30,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:25:30,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:30,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:25:30,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:30,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 10:25:30,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:30,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:30,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:30,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:30,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:30,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 10:25:30,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:30,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:25:30,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:30,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:25:30,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:25:31,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:25:31,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634597417] [2020-10-13 10:25:31,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:25:31,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 10:25:31,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751509146] [2020-10-13 10:25:31,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 10:25:31,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:31,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 10:25:31,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:25:31,058 INFO L87 Difference]: Start difference. First operand 74 states and 90 transitions. Second operand 16 states. [2020-10-13 10:25:32,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:32,570 INFO L93 Difference]: Finished difference Result 139 states and 174 transitions. [2020-10-13 10:25:32,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 10:25:32,571 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 32 [2020-10-13 10:25:32,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:32,573 INFO L225 Difference]: With dead ends: 139 [2020-10-13 10:25:32,573 INFO L226 Difference]: Without dead ends: 112 [2020-10-13 10:25:32,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=94, Invalid=556, Unknown=0, NotChecked=0, Total=650 [2020-10-13 10:25:32,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-13 10:25:32,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 87. [2020-10-13 10:25:32,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-13 10:25:32,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 107 transitions. [2020-10-13 10:25:32,596 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 107 transitions. Word has length 32 [2020-10-13 10:25:32,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:32,596 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 107 transitions. [2020-10-13 10:25:32,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 10:25:32,596 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 107 transitions. [2020-10-13 10:25:32,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-13 10:25:32,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:32,598 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:25:32,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 10:25:32,598 INFO L427 AbstractCegarLoop]: === Iteration 9 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:32,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:32,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1188712300, now seen corresponding path program 1 times [2020-10-13 10:25:32,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:32,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291854695] [2020-10-13 10:25:32,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:32,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:33,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:33,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-13 10:25:33,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:33,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 530 [2020-10-13 10:25:33,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:33,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:25:33,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:25:33,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 10:25:33,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:33,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:33,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:33,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:33,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:33,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:33,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:33,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:25:33,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:33,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:33,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:33,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:33,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:33,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 10:25:33,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:33,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:33,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:33,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:25:33,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:33,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 10:25:33,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:33,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:25:33,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:33,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:25:33,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:25:33,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 10:25:33,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:33,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:33,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:33,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:33,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:33,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 10:25:33,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:33,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:25:33,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:33,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:25:33,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:33,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:25:33,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291854695] [2020-10-13 10:25:33,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:25:33,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:25:33,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537810351] [2020-10-13 10:25:33,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:25:33,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:33,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:25:33,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:25:33,494 INFO L87 Difference]: Start difference. First operand 87 states and 107 transitions. Second operand 13 states. [2020-10-13 10:25:34,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:25:34,922 INFO L93 Difference]: Finished difference Result 120 states and 151 transitions. [2020-10-13 10:25:34,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 10:25:34,923 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 33 [2020-10-13 10:25:34,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:25:34,925 INFO L225 Difference]: With dead ends: 120 [2020-10-13 10:25:34,925 INFO L226 Difference]: Without dead ends: 118 [2020-10-13 10:25:34,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2020-10-13 10:25:34,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-13 10:25:34,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 97. [2020-10-13 10:25:34,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-13 10:25:34,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 121 transitions. [2020-10-13 10:25:34,942 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 121 transitions. Word has length 33 [2020-10-13 10:25:34,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:25:34,942 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 121 transitions. [2020-10-13 10:25:34,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:25:34,942 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 121 transitions. [2020-10-13 10:25:34,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-13 10:25:34,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:25:34,944 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:25:34,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 10:25:34,945 INFO L427 AbstractCegarLoop]: === Iteration 10 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:25:34,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:25:34,945 INFO L82 PathProgramCache]: Analyzing trace with hash -472993492, now seen corresponding path program 1 times [2020-10-13 10:25:34,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:25:34,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1843174979] [2020-10-13 10:25:34,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:25:34,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:34,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:35,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:35,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-13 10:25:35,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:35,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 514 [2020-10-13 10:25:35,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:35,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 10:25:35,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:25:35,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 10:25:35,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:35,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:25:35,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:35,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:35,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:35,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:35,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:35,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:25:35,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:35,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:25:35,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:25:35,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:25:35,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:35,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 10:25:35,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:35,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:35,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:35,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:25:35,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:35,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 10:25:35,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:35,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:25:35,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:25:35,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:25:35,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:35,984 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2020-10-13 10:25:35,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 10:25:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:25:36,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:25:36,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:25:36,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:25:36,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:25:36,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 10:25:36,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:25:36,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:25:36,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:25:36,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:25:36,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:25:49,112 WARN L193 SmtUtils]: Spent 12.07 s on a formula simplification that was a NOOP. DAG size: 152 [2020-10-13 10:25:49,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:25:49,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1843174979] [2020-10-13 10:25:49,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:25:49,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:25:49,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002033054] [2020-10-13 10:25:49,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:25:49,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:25:49,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:25:49,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:25:49,135 INFO L87 Difference]: Start difference. First operand 97 states and 121 transitions. Second operand 13 states. [2020-10-13 10:26:05,473 WARN L193 SmtUtils]: Spent 15.80 s on a formula simplification that was a NOOP. DAG size: 168 [2020-10-13 10:26:07,545 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-10-13 10:26:29,144 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-13 10:26:44,345 WARN L193 SmtUtils]: Spent 13.34 s on a formula simplification that was a NOOP. DAG size: 160 [2020-10-13 10:27:06,022 WARN L193 SmtUtils]: Spent 20.22 s on a formula simplification that was a NOOP. DAG size: 165 [2020-10-13 10:27:44,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:27:44,660 INFO L93 Difference]: Finished difference Result 199 states and 254 transitions. [2020-10-13 10:27:44,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 10:27:44,666 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 33 [2020-10-13 10:27:44,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:27:44,668 INFO L225 Difference]: With dead ends: 199 [2020-10-13 10:27:44,669 INFO L226 Difference]: Without dead ends: 172 [2020-10-13 10:27:44,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 64.8s TimeCoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2020-10-13 10:27:44,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-13 10:27:44,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 111. [2020-10-13 10:27:44,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-13 10:27:44,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 139 transitions. [2020-10-13 10:27:44,701 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 139 transitions. Word has length 33 [2020-10-13 10:27:44,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:27:44,702 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 139 transitions. [2020-10-13 10:27:44,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:27:44,702 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 139 transitions. [2020-10-13 10:27:44,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-13 10:27:44,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:27:44,707 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:27:44,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 10:27:44,712 INFO L427 AbstractCegarLoop]: === Iteration 11 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:27:44,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:27:44,713 INFO L82 PathProgramCache]: Analyzing trace with hash 567613021, now seen corresponding path program 2 times [2020-10-13 10:27:44,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:27:44,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875192265] [2020-10-13 10:27:44,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:27:44,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:44,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:45,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:45,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-13 10:27:45,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:45,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 651 [2020-10-13 10:27:45,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:45,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 10:27:45,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:27:45,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 10:27:45,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:45,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:27:45,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:45,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:45,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:45,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:27:45,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:45,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:27:45,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:45,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:27:45,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:27:45,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:27:45,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:46,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 10:27:46,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:46,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:46,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:46,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:27:46,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:46,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 10:27:46,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:46,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:27:46,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:27:46,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:27:46,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:46,768 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-13 10:27:46,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 10:27:46,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:46,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:46,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:46,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:27:46,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:46,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-13 10:27:46,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:46,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:27:46,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:27:46,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:27:46,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:47,573 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-10-13 10:27:47,588 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 10:27:47,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875192265] [2020-10-13 10:27:47,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:27:47,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 10:27:47,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446228220] [2020-10-13 10:27:47,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 10:27:47,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:27:47,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 10:27:47,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:27:47,591 INFO L87 Difference]: Start difference. First operand 111 states and 139 transitions. Second operand 16 states. [2020-10-13 10:27:48,399 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-13 10:27:48,997 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-13 10:27:49,967 WARN L193 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 59 [2020-10-13 10:27:53,458 WARN L193 SmtUtils]: Spent 765.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2020-10-13 10:27:56,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:27:56,985 INFO L93 Difference]: Finished difference Result 195 states and 249 transitions. [2020-10-13 10:27:56,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 10:27:56,993 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 37 [2020-10-13 10:27:56,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:27:56,995 INFO L225 Difference]: With dead ends: 195 [2020-10-13 10:27:56,995 INFO L226 Difference]: Without dead ends: 168 [2020-10-13 10:27:56,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2020-10-13 10:27:56,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-13 10:27:57,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 119. [2020-10-13 10:27:57,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-13 10:27:57,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 152 transitions. [2020-10-13 10:27:57,014 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 152 transitions. Word has length 37 [2020-10-13 10:27:57,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:27:57,014 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 152 transitions. [2020-10-13 10:27:57,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 10:27:57,014 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 152 transitions. [2020-10-13 10:27:57,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 10:27:57,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:27:57,016 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:27:57,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 10:27:57,017 INFO L427 AbstractCegarLoop]: === Iteration 12 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:27:57,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:27:57,017 INFO L82 PathProgramCache]: Analyzing trace with hash -249576171, now seen corresponding path program 1 times [2020-10-13 10:27:57,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:27:57,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [885231529] [2020-10-13 10:27:57,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:27:57,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:57,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:57,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:58,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:58,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 10:27:58,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:27:58,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1489 [2020-10-13 10:27:58,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:58,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:27:58,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 10:27:58,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 10:27:58,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:58,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:27:58,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:58,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:58,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:58,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:27:58,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:58,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:27:58,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:58,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:27:58,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:27:58,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:27:58,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:58,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 10:27:58,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:58,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:58,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:58,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:27:58,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:58,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:27:58,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:58,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:27:58,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:27:58,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:27:58,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:58,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 10:27:58,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:58,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:58,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:58,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:27:58,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:58,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 10:27:58,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:58,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:27:58,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:27:58,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:27:58,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:58,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 10:27:58,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:27:58,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:27:58,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:27:58,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:27:58,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:27:58,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:27:58,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:27:58,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:27:58,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:27:58,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:27:58,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:27:58,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:27:58,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [885231529] [2020-10-13 10:27:58,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:27:58,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 10:27:58,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543158214] [2020-10-13 10:27:58,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:27:58,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:27:58,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:27:58,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:27:58,895 INFO L87 Difference]: Start difference. First operand 119 states and 152 transitions. Second operand 9 states. [2020-10-13 10:28:00,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:28:00,682 INFO L93 Difference]: Finished difference Result 152 states and 192 transitions. [2020-10-13 10:28:00,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 10:28:00,692 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-10-13 10:28:00,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:28:00,694 INFO L225 Difference]: With dead ends: 152 [2020-10-13 10:28:00,694 INFO L226 Difference]: Without dead ends: 133 [2020-10-13 10:28:00,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:28:00,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-13 10:28:00,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 115. [2020-10-13 10:28:00,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-13 10:28:00,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 146 transitions. [2020-10-13 10:28:00,720 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 146 transitions. Word has length 38 [2020-10-13 10:28:00,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:28:00,720 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 146 transitions. [2020-10-13 10:28:00,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:28:00,721 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 146 transitions. [2020-10-13 10:28:00,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-13 10:28:00,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:28:00,722 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:28:00,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 10:28:00,722 INFO L427 AbstractCegarLoop]: === Iteration 13 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:28:00,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:28:00,723 INFO L82 PathProgramCache]: Analyzing trace with hash 661927774, now seen corresponding path program 1 times [2020-10-13 10:28:00,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:28:00,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305347021] [2020-10-13 10:28:00,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:28:00,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:00,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:01,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:01,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 10:28:01,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:01,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 723 [2020-10-13 10:28:01,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:01,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 10:28:01,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:28:01,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 10:28:01,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:01,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:28:01,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:01,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:01,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:01,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:28:01,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:01,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:28:01,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:01,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:28:01,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:28:01,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:28:01,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:01,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 10:28:01,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:01,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:01,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:01,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:28:01,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:01,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 10:28:01,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:01,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:28:01,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:28:01,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:28:01,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:01,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 10:28:02,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:02,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:02,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:02,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:28:02,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:02,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-13 10:28:02,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:02,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:28:02,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:28:02,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:28:02,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:02,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 10:28:02,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:02,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:02,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:02,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:28:02,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:02,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 10:28:02,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:02,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:28:02,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:28:02,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:28:02,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:02,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:28:02,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [305347021] [2020-10-13 10:28:02,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:28:02,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 10:28:02,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255729004] [2020-10-13 10:28:02,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 10:28:02,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:28:02,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 10:28:02,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:28:02,271 INFO L87 Difference]: Start difference. First operand 115 states and 146 transitions. Second operand 14 states. [2020-10-13 10:28:05,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:28:05,999 INFO L93 Difference]: Finished difference Result 150 states and 193 transitions. [2020-10-13 10:28:06,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 10:28:06,005 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 39 [2020-10-13 10:28:06,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:28:06,007 INFO L225 Difference]: With dead ends: 150 [2020-10-13 10:28:06,007 INFO L226 Difference]: Without dead ends: 148 [2020-10-13 10:28:06,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2020-10-13 10:28:06,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-13 10:28:06,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 128. [2020-10-13 10:28:06,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-13 10:28:06,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 164 transitions. [2020-10-13 10:28:06,043 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 164 transitions. Word has length 39 [2020-10-13 10:28:06,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:28:06,043 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 164 transitions. [2020-10-13 10:28:06,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 10:28:06,043 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 164 transitions. [2020-10-13 10:28:06,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-13 10:28:06,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:28:06,046 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:28:06,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 10:28:06,046 INFO L427 AbstractCegarLoop]: === Iteration 14 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:28:06,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:28:06,046 INFO L82 PathProgramCache]: Analyzing trace with hash 661929696, now seen corresponding path program 1 times [2020-10-13 10:28:06,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:28:06,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093876452] [2020-10-13 10:28:06,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:28:06,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:06,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:06,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:07,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:07,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 10:28:07,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:28:07,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1471 [2020-10-13 10:28:07,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:07,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 10:28:07,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:28:07,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-13 10:28:07,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:08,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:28:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:08,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:08,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:08,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:28:08,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:08,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:28:08,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:08,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:28:08,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:28:08,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:28:08,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:08,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 10:28:08,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:08,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:08,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:08,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:28:08,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:08,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 10:28:08,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:08,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:28:08,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:28:08,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:28:08,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:08,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 10:28:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:08,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:08,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:08,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:28:08,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:08,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 10:28:08,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:08,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:28:08,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:28:08,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:28:08,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:08,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 10:28:08,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:08,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:08,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:08,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:28:08,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:08,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:28:08,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:08,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:28:08,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:28:08,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:28:08,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:08,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:28:08,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093876452] [2020-10-13 10:28:08,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:28:08,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:28:08,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336665449] [2020-10-13 10:28:08,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:28:08,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:28:08,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:28:08,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:28:08,593 INFO L87 Difference]: Start difference. First operand 128 states and 164 transitions. Second operand 17 states. [2020-10-13 10:28:12,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:28:12,207 INFO L93 Difference]: Finished difference Result 183 states and 238 transitions. [2020-10-13 10:28:12,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 10:28:12,213 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 39 [2020-10-13 10:28:12,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:28:12,215 INFO L225 Difference]: With dead ends: 183 [2020-10-13 10:28:12,216 INFO L226 Difference]: Without dead ends: 171 [2020-10-13 10:28:12,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2020-10-13 10:28:12,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-13 10:28:12,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 149. [2020-10-13 10:28:12,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-13 10:28:12,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 194 transitions. [2020-10-13 10:28:12,238 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 194 transitions. Word has length 39 [2020-10-13 10:28:12,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:28:12,239 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 194 transitions. [2020-10-13 10:28:12,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:28:12,239 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 194 transitions. [2020-10-13 10:28:12,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-13 10:28:12,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:28:12,240 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:28:12,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 10:28:12,241 INFO L427 AbstractCegarLoop]: === Iteration 15 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:28:12,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:28:12,241 INFO L82 PathProgramCache]: Analyzing trace with hash 2048133090, now seen corresponding path program 1 times [2020-10-13 10:28:12,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:28:12,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394957780] [2020-10-13 10:28:12,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:28:12,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:12,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:12,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:12,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 10:28:12,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:12,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-13 10:28:12,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:12,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:28:12,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 10:28:12,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:28:12,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:12,742 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 11 [2020-10-13 10:28:12,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:28:12,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:12,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:12,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:12,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:28:12,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:12,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:28:12,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:12,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:28:12,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:28:12,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:28:12,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:12,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 10:28:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:12,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:12,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:12,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:28:12,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:12,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 10:28:12,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:12,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:28:12,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:28:12,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:28:12,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:12,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 10:28:12,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:12,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:12,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:12,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:28:12,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:12,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 10:28:12,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:12,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:28:12,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:28:12,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:28:12,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:12,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 10:28:12,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:12,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:12,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:12,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:28:12,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:12,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:28:12,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:12,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:28:12,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 10:28:12,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:28:12,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:12,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:28:12,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394957780] [2020-10-13 10:28:12,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:28:12,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 10:28:12,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126358717] [2020-10-13 10:28:12,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:28:12,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:28:12,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:28:12,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:28:12,992 INFO L87 Difference]: Start difference. First operand 149 states and 194 transitions. Second operand 9 states. [2020-10-13 10:28:14,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:28:14,759 INFO L93 Difference]: Finished difference Result 258 states and 327 transitions. [2020-10-13 10:28:14,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 10:28:14,765 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 39 [2020-10-13 10:28:14,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:28:14,767 INFO L225 Difference]: With dead ends: 258 [2020-10-13 10:28:14,767 INFO L226 Difference]: Without dead ends: 145 [2020-10-13 10:28:14,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-13 10:28:14,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-13 10:28:14,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 127. [2020-10-13 10:28:14,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-13 10:28:14,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 160 transitions. [2020-10-13 10:28:14,787 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 160 transitions. Word has length 39 [2020-10-13 10:28:14,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:28:14,787 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 160 transitions. [2020-10-13 10:28:14,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:28:14,788 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 160 transitions. [2020-10-13 10:28:14,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-13 10:28:14,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:28:14,789 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:28:14,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 10:28:14,789 INFO L427 AbstractCegarLoop]: === Iteration 16 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:28:14,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:28:14,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1462823114, now seen corresponding path program 1 times [2020-10-13 10:28:14,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:28:14,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930585902] [2020-10-13 10:28:14,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:28:14,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:14,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:15,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:17,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:17,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 10:28:17,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:28:17,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2728 [2020-10-13 10:28:17,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:17,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 10:28:17,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:28:17,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-13 10:28:17,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:18,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:28:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:18,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:18,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:18,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:28:18,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:18,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:28:18,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:18,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:28:18,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:28:18,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:28:18,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:18,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 10:28:18,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:18,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:18,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:18,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:28:18,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:18,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 10:28:18,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:18,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:28:18,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:28:18,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:28:18,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:19,444 WARN L193 SmtUtils]: Spent 731.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2020-10-13 10:28:19,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 10:28:19,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:19,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:19,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:19,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:28:19,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:19,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-13 10:28:19,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:19,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:28:19,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:28:19,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:28:19,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:19,741 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2020-10-13 10:28:19,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 10:28:19,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:19,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:19,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:19,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:28:19,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:19,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 10:28:19,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:19,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:28:19,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:28:19,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:28:19,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:20,762 WARN L193 SmtUtils]: Spent 683.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2020-10-13 10:28:20,774 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:28:20,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930585902] [2020-10-13 10:28:20,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:28:20,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 10:28:20,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152371278] [2020-10-13 10:28:20,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 10:28:20,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:28:20,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 10:28:20,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:28:20,778 INFO L87 Difference]: Start difference. First operand 127 states and 160 transitions. Second operand 16 states. [2020-10-13 10:28:22,283 WARN L193 SmtUtils]: Spent 961.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-10-13 10:28:23,152 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 30 [2020-10-13 10:28:23,769 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2020-10-13 10:28:28,520 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-10-13 10:28:30,603 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification that was a NOOP. DAG size: 74 [2020-10-13 10:28:33,162 WARN L193 SmtUtils]: Spent 1.80 s on a formula simplification that was a NOOP. DAG size: 97 [2020-10-13 10:28:35,302 WARN L193 SmtUtils]: Spent 1.56 s on a formula simplification that was a NOOP. DAG size: 90 [2020-10-13 10:28:42,767 WARN L193 SmtUtils]: Spent 1.45 s on a formula simplification that was a NOOP. DAG size: 78 [2020-10-13 10:28:46,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:28:46,980 INFO L93 Difference]: Finished difference Result 220 states and 280 transitions. [2020-10-13 10:28:46,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 10:28:46,989 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 42 [2020-10-13 10:28:46,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:28:46,991 INFO L225 Difference]: With dead ends: 220 [2020-10-13 10:28:46,991 INFO L226 Difference]: Without dead ends: 193 [2020-10-13 10:28:46,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=134, Invalid=678, Unknown=0, NotChecked=0, Total=812 [2020-10-13 10:28:46,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-13 10:28:47,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 156. [2020-10-13 10:28:47,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-13 10:28:47,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 196 transitions. [2020-10-13 10:28:47,016 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 196 transitions. Word has length 42 [2020-10-13 10:28:47,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:28:47,017 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 196 transitions. [2020-10-13 10:28:47,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 10:28:47,017 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 196 transitions. [2020-10-13 10:28:47,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-13 10:28:47,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:28:47,018 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:28:47,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 10:28:47,019 INFO L427 AbstractCegarLoop]: === Iteration 17 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:28:47,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:28:47,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1047278543, now seen corresponding path program 2 times [2020-10-13 10:28:47,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:28:47,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686257428] [2020-10-13 10:28:47,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:28:47,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:47,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:47,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:47,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 10:28:47,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:47,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 537 [2020-10-13 10:28:47,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:47,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 10:28:47,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:28:47,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-13 10:28:47,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:28:47,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:28:47,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:47,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:47,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:47,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:28:47,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:47,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:28:47,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:47,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:28:47,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:28:47,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:28:47,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:48,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 10:28:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:48,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:48,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:48,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:28:48,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:48,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 10:28:48,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:48,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:28:48,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:28:48,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:28:48,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:48,325 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 21 [2020-10-13 10:28:49,384 WARN L193 SmtUtils]: Spent 836.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2020-10-13 10:28:49,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 10:28:49,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:49,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:49,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:49,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:28:49,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:49,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 10:28:49,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:49,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:28:49,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:28:49,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:28:49,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:50,089 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-10-13 10:28:50,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 10:28:50,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:50,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:50,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:50,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:28:50,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:28:50,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 10:28:50,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:50,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:28:50,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:28:50,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:28:50,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:28:50,202 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-13 10:28:50,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [686257428] [2020-10-13 10:28:50,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:28:50,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:28:50,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820136169] [2020-10-13 10:28:50,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:28:50,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:28:50,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:28:50,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:28:50,204 INFO L87 Difference]: Start difference. First operand 156 states and 196 transitions. Second operand 15 states. [2020-10-13 10:28:51,851 WARN L193 SmtUtils]: Spent 927.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 59 [2020-10-13 10:28:57,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:28:57,800 INFO L93 Difference]: Finished difference Result 213 states and 270 transitions. [2020-10-13 10:28:57,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 10:28:57,809 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 43 [2020-10-13 10:28:57,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:28:57,811 INFO L225 Difference]: With dead ends: 213 [2020-10-13 10:28:57,811 INFO L226 Difference]: Without dead ends: 195 [2020-10-13 10:28:57,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2020-10-13 10:28:57,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-13 10:28:57,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 151. [2020-10-13 10:28:57,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-13 10:28:57,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 189 transitions. [2020-10-13 10:28:57,835 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 189 transitions. Word has length 43 [2020-10-13 10:28:57,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:28:57,835 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 189 transitions. [2020-10-13 10:28:57,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:28:57,835 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 189 transitions. [2020-10-13 10:28:57,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-13 10:28:57,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:28:57,837 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-13 10:28:57,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 10:28:57,837 INFO L427 AbstractCegarLoop]: === Iteration 18 === [process_prio_queueErr0ASSERT_VIOLATIONERROR_FUNCTION, process_normal_queueErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:28:57,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:28:57,837 INFO L82 PathProgramCache]: Analyzing trace with hash -2056201744, now seen corresponding path program 1 times [2020-10-13 10:28:57,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:28:57,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493975939] [2020-10-13 10:28:57,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:28:57,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:28:57,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:58,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:28:59,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:28:59,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-13 10:28:59,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:28:59,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2080 [2020-10-13 10:28:59,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:28:59,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-13 10:28:59,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:28:59,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 10:28:59,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:00,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:29:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:00,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:00,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:00,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:29:00,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:00,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:29:00,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:00,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:29:00,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:00,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:29:00,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:00,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 10:29:00,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:00,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:00,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:00,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:29:00,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:00,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 10:29:00,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:00,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:29:00,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:29:00,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:29:00,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:01,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 10:29:01,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:01,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:01,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:01,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:29:01,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:01,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 10:29:01,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:01,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:29:01,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:29:01,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:29:01,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:01,780 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-10-13 10:29:01,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 10:29:01,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:01,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:01,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:01,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:29:01,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:01,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 10:29:01,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:01,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:29:01,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:29:01,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:29:01,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:02,788 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-13 10:29:02,801 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 10:29:02,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493975939] [2020-10-13 10:29:02,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:29:02,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 10:29:02,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861140967] [2020-10-13 10:29:02,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 10:29:02,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:29:02,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 10:29:02,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2020-10-13 10:29:02,803 INFO L87 Difference]: Start difference. First operand 151 states and 189 transitions. Second operand 22 states. [2020-10-13 10:29:03,988 WARN L193 SmtUtils]: Spent 599.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-13 10:29:06,640 WARN L193 SmtUtils]: Spent 576.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-10-13 10:29:08,025 WARN L193 SmtUtils]: Spent 657.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-10-13 10:29:09,540 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2020-10-13 10:29:14,118 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 29 [2020-10-13 10:29:23,119 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 29 [2020-10-13 10:29:23,675 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2020-10-13 10:29:24,058 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-10-13 10:29:24,359 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 43