/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-manipulation/sll_to_dll_rev-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:29:00,673 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:29:00,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:29:00,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:29:00,733 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:29:00,743 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:29:00,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:29:00,751 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:29:00,755 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:29:00,759 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:29:00,761 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:29:00,762 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:29:00,762 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:29:00,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:29:00,770 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:29:00,772 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:29:00,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:29:00,776 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:29:00,778 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:29:00,790 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:29:00,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:29:00,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:29:00,796 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:29:00,798 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:29:00,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:29:00,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:29:00,814 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:29:00,818 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:29:00,819 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:29:00,820 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:29:00,822 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:29:00,824 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:29:00,825 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:29:00,826 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:29:00,828 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:29:00,828 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:29:00,829 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:29:00,830 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:29:00,830 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:29:00,831 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:29:00,834 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:29:00,835 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 10:29:00,896 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:29:00,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:29:00,898 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:29:00,899 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:29:00,899 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:29:00,899 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:29:00,900 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:29:00,900 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:29:00,900 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:29:00,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:29:00,901 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:29:00,902 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:29:00,902 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:29:00,902 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:29:00,903 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:29:00,903 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:29:00,903 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:29:00,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:29:00,903 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:29:00,904 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:29:00,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:29:00,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:29:00,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:29:00,905 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:29:00,905 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:29:00,905 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:29:00,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:29:00,905 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:29:00,905 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:29:00,906 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 10:29:01,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:29:01,371 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:29:01,377 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:29:01,379 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:29:01,380 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:29:01,380 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/sll_to_dll_rev-2.i [2020-10-13 10:29:01,479 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c9985497/d8f6524eca614557ad507639810483f4/FLAG27a79606d [2020-10-13 10:29:02,200 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:29:02,200 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/sll_to_dll_rev-2.i [2020-10-13 10:29:02,215 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c9985497/d8f6524eca614557ad507639810483f4/FLAG27a79606d [2020-10-13 10:29:02,421 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c9985497/d8f6524eca614557ad507639810483f4 [2020-10-13 10:29:02,434 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:29:02,436 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:29:02,437 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:29:02,438 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:29:02,442 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:29:02,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:29:02" (1/1) ... [2020-10-13 10:29:02,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538d8bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:02, skipping insertion in model container [2020-10-13 10:29:02,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:29:02" (1/1) ... [2020-10-13 10:29:02,458 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:29:02,506 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:29:03,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:29:03,158 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:29:03,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:29:03,294 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:29:03,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:03 WrapperNode [2020-10-13 10:29:03,297 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:29:03,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:29:03,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:29:03,299 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:29:03,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:03" (1/1) ... [2020-10-13 10:29:03,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:03" (1/1) ... [2020-10-13 10:29:03,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:03" (1/1) ... [2020-10-13 10:29:03,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:03" (1/1) ... [2020-10-13 10:29:03,364 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:03" (1/1) ... [2020-10-13 10:29:03,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:03" (1/1) ... [2020-10-13 10:29:03,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:03" (1/1) ... [2020-10-13 10:29:03,395 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:29:03,396 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:29:03,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:29:03,396 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:29:03,402 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:03" (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 10:29:03,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:29:03,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:29:03,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-13 10:29:03,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-13 10:29:03,481 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-10-13 10:29:03,481 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_node [2020-10-13 10:29:03,481 INFO L138 BoogieDeclarations]: Found implementation of procedure chain_node [2020-10-13 10:29:03,482 INFO L138 BoogieDeclarations]: Found implementation of procedure create_sll [2020-10-13 10:29:03,482 INFO L138 BoogieDeclarations]: Found implementation of procedure init_back_link [2020-10-13 10:29:03,482 INFO L138 BoogieDeclarations]: Found implementation of procedure reverse_dll [2020-10-13 10:29:03,482 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_fw_link [2020-10-13 10:29:03,482 INFO L138 BoogieDeclarations]: Found implementation of procedure check_seq_next [2020-10-13 10:29:03,483 INFO L138 BoogieDeclarations]: Found implementation of procedure check_seq_prev [2020-10-13 10:29:03,483 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:29:03,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:29:03,483 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-13 10:29:03,483 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-13 10:29:03,484 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-13 10:29:03,484 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-13 10:29:03,484 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-13 10:29:03,484 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-13 10:29:03,484 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-13 10:29:03,485 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-13 10:29:03,485 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-13 10:29:03,485 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-13 10:29:03,485 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-13 10:29:03,485 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-13 10:29:03,486 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-13 10:29:03,486 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-13 10:29:03,486 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-13 10:29:03,486 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-13 10:29:03,486 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-13 10:29:03,486 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-13 10:29:03,487 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-13 10:29:03,487 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-13 10:29:03,487 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-13 10:29:03,487 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-13 10:29:03,487 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-13 10:29:03,488 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-13 10:29:03,488 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-13 10:29:03,488 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-13 10:29:03,488 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-13 10:29:03,488 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-13 10:29:03,488 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-13 10:29:03,488 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-13 10:29:03,488 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-13 10:29:03,488 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-13 10:29:03,489 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-13 10:29:03,489 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-13 10:29:03,489 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-13 10:29:03,489 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-13 10:29:03,489 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-13 10:29:03,489 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-13 10:29:03,489 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-13 10:29:03,490 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-13 10:29:03,490 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-13 10:29:03,490 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-13 10:29:03,490 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-13 10:29:03,490 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-13 10:29:03,490 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-13 10:29:03,490 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-13 10:29:03,490 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-13 10:29:03,490 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-13 10:29:03,490 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-13 10:29:03,491 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-13 10:29:03,491 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-13 10:29:03,491 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-13 10:29:03,491 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 10:29:03,491 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-13 10:29:03,491 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-13 10:29:03,491 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-13 10:29:03,492 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-13 10:29:03,492 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-13 10:29:03,492 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-13 10:29:03,492 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-13 10:29:03,492 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 10:29:03,493 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-13 10:29:03,493 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-13 10:29:03,493 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 10:29:03,493 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-13 10:29:03,493 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-13 10:29:03,493 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-13 10:29:03,493 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-13 10:29:03,494 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-13 10:29:03,494 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-13 10:29:03,494 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-13 10:29:03,494 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-13 10:29:03,494 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-13 10:29:03,494 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-13 10:29:03,495 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-13 10:29:03,495 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-13 10:29:03,495 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-13 10:29:03,495 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-13 10:29:03,495 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-13 10:29:03,495 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-13 10:29:03,495 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-13 10:29:03,495 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-13 10:29:03,495 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-13 10:29:03,496 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-13 10:29:03,496 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-13 10:29:03,496 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-13 10:29:03,496 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-13 10:29:03,496 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-13 10:29:03,496 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-13 10:29:03,496 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-13 10:29:03,496 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-13 10:29:03,496 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-13 10:29:03,497 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-13 10:29:03,497 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-13 10:29:03,497 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-13 10:29:03,497 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-13 10:29:03,497 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-13 10:29:03,497 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-13 10:29:03,497 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-13 10:29:03,497 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-13 10:29:03,498 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-13 10:29:03,498 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-13 10:29:03,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 10:29:03,498 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-10-13 10:29:03,498 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_node [2020-10-13 10:29:03,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 10:29:03,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-13 10:29:03,499 INFO L130 BoogieDeclarations]: Found specification of procedure chain_node [2020-10-13 10:29:03,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-13 10:29:03,499 INFO L130 BoogieDeclarations]: Found specification of procedure create_sll [2020-10-13 10:29:03,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 10:29:03,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-13 10:29:03,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:29:03,500 INFO L130 BoogieDeclarations]: Found specification of procedure init_back_link [2020-10-13 10:29:03,500 INFO L130 BoogieDeclarations]: Found specification of procedure reverse_dll [2020-10-13 10:29:03,500 INFO L130 BoogieDeclarations]: Found specification of procedure remove_fw_link [2020-10-13 10:29:03,500 INFO L130 BoogieDeclarations]: Found specification of procedure check_seq_next [2020-10-13 10:29:03,500 INFO L130 BoogieDeclarations]: Found specification of procedure check_seq_prev [2020-10-13 10:29:03,500 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:29:03,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:29:03,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:29:04,353 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:29:04,354 INFO L295 CfgBuilder]: Removed 33 assume(true) statements. [2020-10-13 10:29:04,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:29:04 BoogieIcfgContainer [2020-10-13 10:29:04,360 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:29:04,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:29:04,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:29:04,368 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:29:04,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:29:02" (1/3) ... [2020-10-13 10:29:04,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72d7104a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:29:04, skipping insertion in model container [2020-10-13 10:29:04,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:03" (2/3) ... [2020-10-13 10:29:04,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72d7104a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:29:04, skipping insertion in model container [2020-10-13 10:29:04,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:29:04" (3/3) ... [2020-10-13 10:29:04,374 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_to_dll_rev-2.i [2020-10-13 10:29:04,390 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:29:04,402 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:29:04,421 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:29:04,458 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:29:04,459 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:29:04,459 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:29:04,459 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:29:04,459 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:29:04,459 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:29:04,459 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:29:04,460 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:29:04,486 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states. [2020-10-13 10:29:04,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-13 10:29:04,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:29:04,498 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:29:04,499 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:29:04,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:29:04,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1243342133, now seen corresponding path program 1 times [2020-10-13 10:29:04,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:29:04,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [762722280] [2020-10-13 10:29:04,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:29:04,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:04,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:04,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:04,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:05,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:05,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 10:29:05,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:29:05,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 402 [2020-10-13 10:29:05,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:05,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:29:05,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 10:29:05,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:29:05,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-13 10:29:05,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:29:05,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:05,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:05,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:05,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:29:05,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:05,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:29:05,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:05,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:29:05,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:05,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:29:05,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:05,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:29:05,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:05,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:05,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:05,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:05,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:05,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 10:29:05,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:29:05,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 10:29:05,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:05,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:29:05,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 10:29:05,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:29:05,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:29:05,333 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 10:29:05,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [762722280] [2020-10-13 10:29:05,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:29:05,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:29:05,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085395879] [2020-10-13 10:29:05,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:29:05,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:29:05,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:29:05,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:29:05,376 INFO L87 Difference]: Start difference. First operand 117 states. Second operand 4 states. [2020-10-13 10:29:05,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:29:05,802 INFO L93 Difference]: Finished difference Result 234 states and 383 transitions. [2020-10-13 10:29:05,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:29:05,804 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-13 10:29:05,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:29:05,819 INFO L225 Difference]: With dead ends: 234 [2020-10-13 10:29:05,819 INFO L226 Difference]: Without dead ends: 118 [2020-10-13 10:29:05,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 10:29:05,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-13 10:29:05,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 108. [2020-10-13 10:29:05,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-13 10:29:05,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 128 transitions. [2020-10-13 10:29:05,903 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 128 transitions. Word has length 24 [2020-10-13 10:29:05,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:29:05,904 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 128 transitions. [2020-10-13 10:29:05,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:29:05,904 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 128 transitions. [2020-10-13 10:29:05,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 10:29:05,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:29:05,908 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:29:05,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:29:05,908 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:29:05,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:29:05,909 INFO L82 PathProgramCache]: Analyzing trace with hash -428183820, now seen corresponding path program 1 times [2020-10-13 10:29:05,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:29:05,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202727925] [2020-10-13 10:29:05,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:29:05,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:06,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:06,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:09,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:10,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:11,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:11,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 10:29:11,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:29:11,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 10:29:11,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:11,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-13 10:29:11,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:29:11,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-13 10:29:11,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:11,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:29:11,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:11,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:11,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:11,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:29:11,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:11,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:29:11,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:11,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:29:11,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:11,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:29:11,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:29:11,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:29:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:11,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:11,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:12,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:13,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:16,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:16,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 10:29:16,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:29:16,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-13 10:29:16,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:16,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-13 10:29:16,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:16,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 10:29:16,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 10:29:16,748 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 29 [2020-10-13 10:29:16,917 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 29 [2020-10-13 10:29:17,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:29:17,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:17,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:17,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:17,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:17,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:29:17,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:29:17,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-13 10:29:17,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:17,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:29:17,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:17,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 10:29:17,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:29:17,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:29:17,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:17,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:17,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:17,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:17,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:29:17,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:29:17,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 10:29:17,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:17,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:29:17,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:17,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:29:17,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:29:17,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:29:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:17,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:17,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:17,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:17,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:17,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:29:17,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:29:17,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-13 10:29:17,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:17,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:29:17,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:17,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 10:29:17,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:29:17,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:29:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:17,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:17,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:17,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:29:17,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:17,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 10:29:17,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:17,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:29:17,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:17,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:29:17,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 10:29:17,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:29:17,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:17,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:17,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:17,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:29:17,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:17,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-13 10:29:17,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:17,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:29:17,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:29:17,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 10:29:17,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:29:21,663 WARN L193 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 178 DAG size of output: 110 [2020-10-13 10:29:21,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:29:21,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:21,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:21,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:21,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:29:21,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:21,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 10:29:21,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:21,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:29:21,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:29:21,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:29:21,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:22,163 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 10:29:22,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202727925] [2020-10-13 10:29:22,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:29:22,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-13 10:29:22,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326999348] [2020-10-13 10:29:22,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-13 10:29:22,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:29:22,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-13 10:29:22,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2020-10-13 10:29:22,170 INFO L87 Difference]: Start difference. First operand 108 states and 128 transitions. Second operand 27 states. [2020-10-13 10:29:24,022 WARN L193 SmtUtils]: Spent 776.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-13 10:29:25,576 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 10:29:30,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:29:30,481 INFO L93 Difference]: Finished difference Result 160 states and 198 transitions. [2020-10-13 10:29:30,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-13 10:29:30,482 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 60 [2020-10-13 10:29:30,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:29:30,490 INFO L225 Difference]: With dead ends: 160 [2020-10-13 10:29:30,490 INFO L226 Difference]: Without dead ends: 157 [2020-10-13 10:29:30,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=191, Invalid=1701, Unknown=0, NotChecked=0, Total=1892 [2020-10-13 10:29:30,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-13 10:29:30,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 120. [2020-10-13 10:29:30,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-13 10:29:30,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 142 transitions. [2020-10-13 10:29:30,535 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 142 transitions. Word has length 60 [2020-10-13 10:29:30,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:29:30,536 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 142 transitions. [2020-10-13 10:29:30,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-13 10:29:30,537 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 142 transitions. [2020-10-13 10:29:30,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-13 10:29:30,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:29:30,541 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:29:30,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:29:30,543 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:29:30,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:29:30,544 INFO L82 PathProgramCache]: Analyzing trace with hash 832502526, now seen corresponding path program 1 times [2020-10-13 10:29:30,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:29:30,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679716764] [2020-10-13 10:29:30,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:29:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:30,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:31,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:32,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:32,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:33,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:35,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:35,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:35,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 10:29:35,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 10:29:35,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-13 10:29:35,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:35,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-13 10:29:35,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:29:35,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 10:29:35,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 10:29:35,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:29:35,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:35,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:35,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:35,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:29:35,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:35,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:29:35,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:35,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:29:35,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:35,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:29:35,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:35,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:29:35,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:35,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:36,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:38,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:38,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 10:29:38,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:29:38,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2307 [2020-10-13 10:29:38,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:38,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-13 10:29:38,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:38,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 10:29:38,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:38,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:29:38,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:38,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:38,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:38,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:29:38,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:38,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 10:29:38,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:38,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:29:38,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:38,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 10:29:38,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:29:38,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:29:38,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:38,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:38,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:38,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:29:38,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:38,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 10:29:38,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:38,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:29:38,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:38,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:29:38,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:29:38,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:29:38,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:38,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:38,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:38,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:29:38,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:38,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 10:29:38,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:38,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:29:38,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:29:38,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 10:29:38,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:40,082 WARN L193 SmtUtils]: Spent 919.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 116 [2020-10-13 10:29:40,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:29:40,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:40,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:40,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:40,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:29:40,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:40,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 10:29:40,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:40,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:29:40,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:29:40,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:29:40,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:40,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:29:40,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:40,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:40,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:40,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:29:40,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:40,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 10:29:40,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:40,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:29:40,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:29:40,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 10:29:40,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:40,823 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2020-10-13 10:29:40,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:29:40,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:40,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:40,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:40,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:29:40,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:40,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 10:29:40,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:40,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:29:40,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:29:40,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:29:40,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:41,000 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 10:29:41,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679716764] [2020-10-13 10:29:41,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:29:41,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-13 10:29:41,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434250593] [2020-10-13 10:29:41,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-13 10:29:41,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:29:41,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-13 10:29:41,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2020-10-13 10:29:41,006 INFO L87 Difference]: Start difference. First operand 120 states and 142 transitions. Second operand 25 states. [2020-10-13 10:29:42,162 WARN L193 SmtUtils]: Spent 509.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-13 10:29:42,979 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-13 10:29:45,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:29:45,840 INFO L93 Difference]: Finished difference Result 157 states and 193 transitions. [2020-10-13 10:29:45,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 10:29:45,840 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 62 [2020-10-13 10:29:45,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:29:45,843 INFO L225 Difference]: With dead ends: 157 [2020-10-13 10:29:45,843 INFO L226 Difference]: Without dead ends: 154 [2020-10-13 10:29:45,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=172, Invalid=1388, Unknown=0, NotChecked=0, Total=1560 [2020-10-13 10:29:45,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-13 10:29:45,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 120. [2020-10-13 10:29:45,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-13 10:29:45,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 141 transitions. [2020-10-13 10:29:45,863 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 141 transitions. Word has length 62 [2020-10-13 10:29:45,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:29:45,863 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 141 transitions. [2020-10-13 10:29:45,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-13 10:29:45,863 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 141 transitions. [2020-10-13 10:29:45,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 10:29:45,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:29:45,865 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:29:45,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 10:29:45,865 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:29:45,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:29:45,866 INFO L82 PathProgramCache]: Analyzing trace with hash 751531946, now seen corresponding path program 1 times [2020-10-13 10:29:45,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:29:45,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354399508] [2020-10-13 10:29:45,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:29:45,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:45,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:47,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:47,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:48,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:50,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:50,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:50,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 10:29:50,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 10:29:50,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 10:29:50,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:50,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-13 10:29:50,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:29:50,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-13 10:29:50,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:50,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:29:50,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:50,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:51,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:51,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:29:51,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:51,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:29:51,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:51,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:29:51,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:51,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:29:51,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:51,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:29:51,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:51,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:51,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:52,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:52,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 10:29:52,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:29:52,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1942 [2020-10-13 10:29:52,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:52,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-13 10:29:52,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:52,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 10:29:52,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:53,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:29:53,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:53,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:53,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:53,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:29:53,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:53,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 10:29:53,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:53,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:29:53,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:53,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 10:29:53,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:53,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:29:53,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:53,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:53,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:53,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:29:53,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:53,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 10:29:53,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:53,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:29:53,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:53,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:29:53,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:53,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:29:53,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:53,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:53,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:53,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:29:53,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:53,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 10:29:53,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:53,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:29:53,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:29:53,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 10:29:53,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:53,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:29:53,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:53,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:53,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:53,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:29:53,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:53,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 10:29:53,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:53,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:29:53,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:29:53,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:29:53,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:53,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:29:53,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:53,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:54,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:54,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:29:54,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:54,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-13 10:29:54,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:54,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:29:54,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:29:54,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 10:29:54,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:58,998 WARN L193 SmtUtils]: Spent 3.33 s on a formula simplification. DAG size of input: 269 DAG size of output: 171 [2020-10-13 10:29:59,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:29:59,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:59,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:59,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:59,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:29:59,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:59,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 10:29:59,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:59,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:29:59,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:29:59,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:29:59,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:00,252 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2020-10-13 10:30:00,311 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-13 10:30:00,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [354399508] [2020-10-13 10:30:00,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:30:00,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-13 10:30:00,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705660148] [2020-10-13 10:30:00,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-13 10:30:00,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:30:00,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-13 10:30:00,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=855, Unknown=0, NotChecked=0, Total=930 [2020-10-13 10:30:00,314 INFO L87 Difference]: Start difference. First operand 120 states and 141 transitions. Second operand 31 states. [2020-10-13 10:30:02,191 WARN L193 SmtUtils]: Spent 1.39 s on a formula simplification that was a NOOP. DAG size: 178 [2020-10-13 10:30:04,175 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification that was a NOOP. DAG size: 182 [2020-10-13 10:30:04,890 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2020-10-13 10:30:08,645 WARN L193 SmtUtils]: Spent 3.32 s on a formula simplification. DAG size of input: 195 DAG size of output: 195 [2020-10-13 10:30:12,430 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-10-13 10:30:13,833 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2020-10-13 10:30:18,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:30:18,596 INFO L93 Difference]: Finished difference Result 198 states and 245 transitions. [2020-10-13 10:30:18,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-13 10:30:18,597 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 66 [2020-10-13 10:30:18,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:30:18,601 INFO L225 Difference]: With dead ends: 198 [2020-10-13 10:30:18,601 INFO L226 Difference]: Without dead ends: 195 [2020-10-13 10:30:18,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 14.8s TimeCoverageRelationStatistics Valid=214, Invalid=2236, Unknown=0, NotChecked=0, Total=2450 [2020-10-13 10:30:18,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-13 10:30:18,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 144. [2020-10-13 10:30:18,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-13 10:30:18,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 170 transitions. [2020-10-13 10:30:18,644 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 170 transitions. Word has length 66 [2020-10-13 10:30:18,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:30:18,644 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 170 transitions. [2020-10-13 10:30:18,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-13 10:30:18,644 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 170 transitions. [2020-10-13 10:30:18,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 10:30:18,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:30:18,646 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:30:18,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 10:30:18,647 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:30:18,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:30:18,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1187745704, now seen corresponding path program 1 times [2020-10-13 10:30:18,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:30:18,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206703266] [2020-10-13 10:30:18,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:30:18,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:18,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:19,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:20,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:22,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:23,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:23,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 10:30:23,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:30:23,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 10:30:23,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:23,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-13 10:30:23,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:30:23,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 10:30:23,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:23,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:30:23,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:23,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:23,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:23,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:30:23,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:23,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:30:23,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:23,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:23,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:23,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:23,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:23,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:30:23,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:23,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:24,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:24,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 10:30:24,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:24,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 833 [2020-10-13 10:30:24,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:24,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-13 10:30:24,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:30:24,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 10:30:24,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:25,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:30:25,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:25,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:25,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:25,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:30:25,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:25,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 10:30:25,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:25,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:30:25,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:25,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 10:30:25,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:25,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:30:25,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:25,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:25,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:25,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:30:25,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:25,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:30:25,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:25,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:25,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:25,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:25,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:25,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:30:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:25,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:25,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:25,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:30:25,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:25,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-13 10:30:25,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:25,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:30:25,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:30:25,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 10:30:25,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:26,984 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-10-13 10:30:27,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:30:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:27,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:27,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:27,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:30:27,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:27,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 10:30:27,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:27,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:30:27,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:30:27,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:30:27,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:27,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:30:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:27,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:27,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:27,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:30:27,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:27,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-13 10:30:27,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:27,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:30:27,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:30:27,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 10:30:27,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:28,688 WARN L193 SmtUtils]: Spent 561.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-13 10:30:28,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:30:28,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:28,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:28,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:28,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:30:28,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:28,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 10:30:28,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:28,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:30:28,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:30:28,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:30:28,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:29,034 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-13 10:30:29,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206703266] [2020-10-13 10:30:29,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:30:29,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-13 10:30:29,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111824228] [2020-10-13 10:30:29,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-13 10:30:29,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:30:29,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-13 10:30:29,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=545, Unknown=0, NotChecked=0, Total=600 [2020-10-13 10:30:29,037 INFO L87 Difference]: Start difference. First operand 144 states and 170 transitions. Second operand 25 states. [2020-10-13 10:30:30,058 WARN L193 SmtUtils]: Spent 652.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-13 10:30:31,173 WARN L193 SmtUtils]: Spent 695.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-10-13 10:30:33,746 WARN L193 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 107 DAG size of output: 107 [2020-10-13 10:30:37,271 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 63 [2020-10-13 10:30:37,601 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 83 [2020-10-13 10:30:44,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:30:44,565 INFO L93 Difference]: Finished difference Result 286 states and 351 transitions. [2020-10-13 10:30:44,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 10:30:44,566 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 70 [2020-10-13 10:30:44,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:30:44,571 INFO L225 Difference]: With dead ends: 286 [2020-10-13 10:30:44,571 INFO L226 Difference]: Without dead ends: 207 [2020-10-13 10:30:44,573 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=152, Invalid=1570, Unknown=0, NotChecked=0, Total=1722 [2020-10-13 10:30:44,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-13 10:30:44,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 167. [2020-10-13 10:30:44,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-13 10:30:44,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 197 transitions. [2020-10-13 10:30:44,596 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 197 transitions. Word has length 70 [2020-10-13 10:30:44,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:30:44,597 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 197 transitions. [2020-10-13 10:30:44,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-13 10:30:44,597 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 197 transitions. [2020-10-13 10:30:44,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 10:30:44,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:30:44,599 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:30:44,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 10:30:44,599 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:30:44,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:30:44,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1544707657, now seen corresponding path program 1 times [2020-10-13 10:30:44,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:30:44,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821474088] [2020-10-13 10:30:44,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:30:44,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:44,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:45,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:46,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:49,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:49,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-13 10:30:49,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:30:49,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 10:30:49,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:49,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-13 10:30:49,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:30:49,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-13 10:30:49,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:49,944 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 30 [2020-10-13 10:30:50,128 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 32 [2020-10-13 10:30:50,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:30:50,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:50,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:50,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:50,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:30:50,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:50,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:30:50,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:50,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:50,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:50,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:50,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:50,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:30:50,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:50,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:50,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:53,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:53,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 10:30:53,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:30:53,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3363 [2020-10-13 10:30:53,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:53,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 10:30:53,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:53,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 10:30:53,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:53,892 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2020-10-13 10:30:54,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:30:54,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:54,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:54,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:54,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:30:54,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:54,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 10:30:54,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:54,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:30:54,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:54,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 10:30:54,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:54,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:30:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:54,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:54,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:54,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:30:54,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:54,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:30:54,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:54,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:54,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:54,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:54,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:54,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:30:54,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:54,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:54,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:54,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:30:54,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:54,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 10:30:54,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:54,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:30:54,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:54,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 10:30:54,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:54,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:30:54,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:54,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:54,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:54,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:30:54,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:54,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 10:30:54,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:54,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:30:54,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:54,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:30:54,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:54,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:30:54,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:54,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:54,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:54,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:30:54,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:54,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 10:30:54,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:54,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:30:54,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:30:54,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 10:30:54,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:55,071 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2020-10-13 10:30:58,877 WARN L193 SmtUtils]: Spent 3.51 s on a formula simplification. DAG size of input: 190 DAG size of output: 176 [2020-10-13 10:30:58,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:30:58,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:58,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:58,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:58,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:30:58,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:58,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 10:30:58,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:58,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:30:58,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:30:58,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:30:58,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:59,267 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2020-10-13 10:30:59,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 10:30:59,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:59,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:59,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:59,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 10:30:59,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:59,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 10:30:59,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:59,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:30:59,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:59,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 10:30:59,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:59,727 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-13 10:30:59,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821474088] [2020-10-13 10:30:59,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:30:59,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-13 10:30:59,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098512012] [2020-10-13 10:30:59,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-13 10:30:59,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:30:59,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-13 10:30:59,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=647, Unknown=0, NotChecked=0, Total=702 [2020-10-13 10:30:59,730 INFO L87 Difference]: Start difference. First operand 167 states and 197 transitions. Second operand 27 states. [2020-10-13 10:31:00,622 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2020-10-13 10:31:04,705 WARN L193 SmtUtils]: Spent 3.82 s on a formula simplification. DAG size of input: 197 DAG size of output: 186 [2020-10-13 10:31:06,667 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2020-10-13 10:31:08,652 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-13 10:31:09,066 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-10-13 10:31:13,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:31:13,972 INFO L93 Difference]: Finished difference Result 225 states and 278 transitions. [2020-10-13 10:31:13,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 10:31:13,974 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 70 [2020-10-13 10:31:13,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:31:13,977 INFO L225 Difference]: With dead ends: 225 [2020-10-13 10:31:13,978 INFO L226 Difference]: Without dead ends: 222 [2020-10-13 10:31:13,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=142, Invalid=1580, Unknown=0, NotChecked=0, Total=1722 [2020-10-13 10:31:13,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-13 10:31:14,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 170. [2020-10-13 10:31:14,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-13 10:31:14,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 200 transitions. [2020-10-13 10:31:14,004 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 200 transitions. Word has length 70 [2020-10-13 10:31:14,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:31:14,005 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 200 transitions. [2020-10-13 10:31:14,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-13 10:31:14,005 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 200 transitions. [2020-10-13 10:31:14,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-13 10:31:14,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:31:14,007 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:31:14,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 10:31:14,007 INFO L427 AbstractCegarLoop]: === Iteration 7 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:31:14,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:31:14,008 INFO L82 PathProgramCache]: Analyzing trace with hash 2009640329, now seen corresponding path program 1 times [2020-10-13 10:31:14,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:31:14,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [29940280] [2020-10-13 10:31:14,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:31:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:31:14,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:31:14,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:31:16,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:31:17,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:31:19,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:31:19,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-13 10:31:19,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:31:19,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 10:31:19,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:31:19,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-13 10:31:19,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:31:19,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 10:31:19,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:31:19,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:31:19,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:31:19,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:31:19,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:31:19,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:31:19,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:31:19,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:31:19,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:31:19,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:31:19,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:31:19,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:31:19,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:31:19,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:31:19,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:31:19,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:31:20,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:31:23,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:31:23,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 10:31:23,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:31:23,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3870 [2020-10-13 10:31:23,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:31:23,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-13 10:31:23,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:31:23,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 10:31:23,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:31:23,610 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2020-10-13 10:31:23,782 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-10-13 10:31:24,053 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2020-10-13 10:31:24,275 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2020-10-13 10:31:24,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:31:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:31:24,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:31:24,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:31:24,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:31:24,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:31:24,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 10:31:24,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:31:24,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:31:24,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:31:24,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 10:31:24,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:31:24,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:31:24,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:31:24,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:31:24,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:31:24,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:31:24,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:31:24,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 10:31:24,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:31:24,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:31:24,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:31:24,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:31:24,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:31:24,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:31:24,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:31:24,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:31:24,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:31:24,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:31:24,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:31:24,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 10:31:24,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:31:24,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:31:24,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:31:24,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 10:31:24,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:31:25,705 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2020-10-13 10:31:32,150 WARN L193 SmtUtils]: Spent 5.47 s on a formula simplification. DAG size of input: 272 DAG size of output: 128 [2020-10-13 10:31:33,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:31:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:31:33,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:31:33,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:31:33,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:31:33,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:31:33,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 10:31:33,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:31:33,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:31:33,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:31:33,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:31:33,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:31:33,651 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-10-13 10:31:33,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:31:33,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:31:33,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:31:33,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:31:33,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:31:33,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:31:33,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-13 10:31:33,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:31:33,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:31:33,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:31:33,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 10:31:33,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:31:34,145 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2020-10-13 10:31:37,033 WARN L193 SmtUtils]: Spent 2.43 s on a formula simplification. DAG size of input: 129 DAG size of output: 113 [2020-10-13 10:31:37,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:31:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:31:37,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:31:37,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:31:37,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:31:37,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:31:37,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 10:31:37,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:31:37,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:31:37,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:31:37,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:31:37,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:31:37,900 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-10-13 10:31:37,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 10:31:37,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:31:37,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:31:37,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:31:37,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 10:31:37,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:31:37,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 10:31:37,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:31:37,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:31:37,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:31:37,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 10:31:37,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:31:38,320 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-13 10:31:38,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [29940280] [2020-10-13 10:31:38,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:31:38,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-13 10:31:38,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932821087] [2020-10-13 10:31:38,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-13 10:31:38,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:31:38,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-13 10:31:38,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=916, Unknown=0, NotChecked=0, Total=992 [2020-10-13 10:31:38,323 INFO L87 Difference]: Start difference. First operand 170 states and 200 transitions. Second operand 32 states. [2020-10-13 10:31:41,190 WARN L193 SmtUtils]: Spent 2.23 s on a formula simplification that was a NOOP. DAG size: 142 [2020-10-13 10:31:42,571 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-10-13 10:31:42,987 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2020-10-13 10:31:48,534 WARN L193 SmtUtils]: Spent 5.02 s on a formula simplification. DAG size of input: 160 DAG size of output: 146 [2020-10-13 10:31:53,318 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-10-13 10:31:53,847 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 76 [2020-10-13 10:32:03,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:32:03,460 INFO L93 Difference]: Finished difference Result 217 states and 265 transitions. [2020-10-13 10:32:03,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 10:32:03,463 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 73 [2020-10-13 10:32:03,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:32:03,466 INFO L225 Difference]: With dead ends: 217 [2020-10-13 10:32:03,466 INFO L226 Difference]: Without dead ends: 214 [2020-10-13 10:32:03,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=161, Invalid=1819, Unknown=0, NotChecked=0, Total=1980 [2020-10-13 10:32:03,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-13 10:32:03,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 169. [2020-10-13 10:32:03,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-13 10:32:03,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 198 transitions. [2020-10-13 10:32:03,490 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 198 transitions. Word has length 73 [2020-10-13 10:32:03,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:32:03,490 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 198 transitions. [2020-10-13 10:32:03,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-13 10:32:03,490 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 198 transitions. [2020-10-13 10:32:03,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-13 10:32:03,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:32:03,492 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:32:03,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 10:32:03,493 INFO L427 AbstractCegarLoop]: === Iteration 8 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:32:03,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:32:03,493 INFO L82 PathProgramCache]: Analyzing trace with hash 48201059, now seen corresponding path program 1 times [2020-10-13 10:32:03,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:32:03,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42085571] [2020-10-13 10:32:03,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:32:03,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:32:03,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:32:04,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:32:05,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:32:07,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:32:08,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:32:08,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-13 10:32:08,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:32:08,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 10:32:08,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:32:08,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-13 10:32:08,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:32:08,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-13 10:32:08,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:32:08,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:32:08,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:32:08,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:32:08,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:32:08,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:32:08,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:32:08,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:32:08,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:32:08,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:32:08,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:32:08,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:32:08,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:32:08,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:32:08,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:32:08,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:32:09,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:32:10,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:32:11,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:32:13,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:32:13,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 10:32:13,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:32:13,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 10:32:13,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:32:13,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-13 10:32:13,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:32:13,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 10:32:13,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:32:14,659 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 21 [2020-10-13 10:32:15,417 WARN L193 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 44 [2020-10-13 10:32:15,943 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 33 [2020-10-13 10:32:17,308 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 207 DAG size of output: 55 [2020-10-13 10:32:21,836 WARN L193 SmtUtils]: Spent 4.22 s on a formula simplification. DAG size of input: 410 DAG size of output: 81 [2020-10-13 10:32:28,802 WARN L193 SmtUtils]: Spent 6.56 s on a formula simplification. DAG size of input: 630 DAG size of output: 135 [2020-10-13 10:32:28,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:32:28,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:32:28,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:32:28,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:32:29,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:32:29,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:32:29,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:32:29,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-13 10:32:29,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:32:29,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:32:29,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:32:29,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 10:32:29,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:32:29,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:32:29,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:32:29,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:32:29,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:32:29,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:32:29,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:32:29,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 10:32:29,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:32:29,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:32:29,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:32:29,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:32:29,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:32:29,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 10:32:29,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:32:29,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:32:29,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:32:29,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:32:29,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:32:29,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-13 10:32:29,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:32:29,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:32:29,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:32:29,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 10:32:29,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:32:29,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:32:29,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:32:29,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:32:29,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:32:29,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:32:29,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:32:29,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 10:32:29,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:32:29,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:32:29,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:32:29,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 10:32:29,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:32:30,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 10:32:30,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:32:30,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:32:30,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:32:30,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:32:30,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:32:30,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-13 10:32:30,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:32:30,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:32:30,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:32:30,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 10:32:30,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:32:32,800 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 56