/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/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 13:57:34,068 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 13:57:34,070 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 13:57:34,094 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 13:57:34,094 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 13:57:34,095 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 13:57:34,096 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 13:57:34,098 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 13:57:34,100 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 13:57:34,101 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 13:57:34,102 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 13:57:34,103 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 13:57:34,103 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 13:57:34,104 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 13:57:34,105 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 13:57:34,106 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 13:57:34,107 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 13:57:34,108 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 13:57:34,110 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 13:57:34,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 13:57:34,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 13:57:34,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 13:57:34,115 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 13:57:34,116 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 13:57:34,118 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 13:57:34,119 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 13:57:34,119 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 13:57:34,120 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 13:57:34,120 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 13:57:34,121 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 13:57:34,121 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 13:57:34,122 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 13:57:34,122 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 13:57:34,123 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 13:57:34,124 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 13:57:34,124 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 13:57:34,125 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 13:57:34,125 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 13:57:34,125 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 13:57:34,126 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 13:57:34,127 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 13:57:34,128 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 13:57:34,150 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 13:57:34,150 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 13:57:34,152 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 13:57:34,152 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 13:57:34,152 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 13:57:34,152 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 13:57:34,152 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 13:57:34,153 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 13:57:34,153 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 13:57:34,156 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 13:57:34,156 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 13:57:34,157 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 13:57:34,157 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 13:57:34,157 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 13:57:34,157 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 13:57:34,157 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 13:57:34,157 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 13:57:34,158 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 13:57:34,158 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 13:57:34,158 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 13:57:34,158 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 13:57:34,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 13:57:34,159 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 13:57:34,159 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 13:57:34,161 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 13:57:34,161 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 13:57:34,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 13:57:34,162 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 13:57:34,162 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 13:57:34,162 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 13:57:34,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 13:57:34,494 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 13:57:34,498 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 13:57:34,500 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 13:57:34,501 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 13:57:34,502 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-13 13:57:34,574 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/537c27359/2c75b0ab7f8c405e8eb390d8455252f9/FLAGb3cb628d4 [2020-10-13 13:57:35,155 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 13:57:35,156 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-13 13:57:35,173 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/537c27359/2c75b0ab7f8c405e8eb390d8455252f9/FLAGb3cb628d4 [2020-10-13 13:57:35,466 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/537c27359/2c75b0ab7f8c405e8eb390d8455252f9 [2020-10-13 13:57:35,473 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 13:57:35,475 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 13:57:35,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 13:57:35,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 13:57:35,481 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 13:57:35,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:57:35" (1/1) ... [2020-10-13 13:57:35,485 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a9b8a3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:57:35, skipping insertion in model container [2020-10-13 13:57:35,486 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:57:35" (1/1) ... [2020-10-13 13:57:35,494 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 13:57:35,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 13:57:36,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:57:36,435 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 13:57:36,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 13:57:36,825 INFO L208 MainTranslator]: Completed translation [2020-10-13 13:57:36,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:57:36 WrapperNode [2020-10-13 13:57:36,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 13:57:36,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 13:57:36,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 13:57:36,826 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 13:57:36,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:57:36" (1/1) ... [2020-10-13 13:57:36,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:57:36" (1/1) ... [2020-10-13 13:57:36,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:57:36" (1/1) ... [2020-10-13 13:57:36,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:57:36" (1/1) ... [2020-10-13 13:57:36,909 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:57:36" (1/1) ... [2020-10-13 13:57:36,960 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:57:36" (1/1) ... [2020-10-13 13:57:36,977 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:57:36" (1/1) ... [2020-10-13 13:57:36,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 13:57:37,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 13:57:37,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 13:57:37,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 13:57:37,002 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:57:36" (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 13:57:37,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 13:57:37,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 13:57:37,087 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 13:57:37,087 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 13:57:37,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 13:57:37,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 13:57:37,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 13:57:37,089 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 13:57:37,090 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 13:57:37,090 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 13:57:37,090 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 13:57:37,090 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 13:57:37,090 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 13:57:37,091 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 13:57:37,091 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 13:57:37,092 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 13:57:37,092 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 13:57:37,092 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 13:57:37,092 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 13:57:37,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 13:57:37,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 13:57:38,965 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 13:57:38,965 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 13:57:38,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:57:38 BoogieIcfgContainer [2020-10-13 13:57:38,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 13:57:38,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 13:57:38,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 13:57:38,979 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 13:57:38,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:57:35" (1/3) ... [2020-10-13 13:57:38,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53a8774c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:57:38, skipping insertion in model container [2020-10-13 13:57:38,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:57:36" (2/3) ... [2020-10-13 13:57:38,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53a8774c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:57:38, skipping insertion in model container [2020-10-13 13:57:38,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:57:38" (3/3) ... [2020-10-13 13:57:38,982 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-13 13:57:38,994 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 13:57:39,002 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 13:57:39,016 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 13:57:39,045 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 13:57:39,045 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 13:57:39,045 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 13:57:39,045 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 13:57:39,046 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 13:57:39,046 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 13:57:39,046 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 13:57:39,046 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 13:57:39,077 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states. [2020-10-13 13:57:39,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-13 13:57:39,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:57:39,104 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:57:39,105 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:57:39,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:57:39,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1878018170, now seen corresponding path program 1 times [2020-10-13 13:57:39,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:57:39,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [191443200] [2020-10-13 13:57:39,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:57:39,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:40,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:40,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:41,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:41,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:42,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:42,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:42,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:42,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:42,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:42,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:43,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:45,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:45,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-13 13:57:45,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 13:57:45,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-13 13:57:45,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:45,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:57:45,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:57:45,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-13 13:57:45,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 13:57:45,957 WARN L193 SmtUtils]: Spent 636.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 13:57:45,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:57:45,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:45,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:46,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:46,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:57:46,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:57:46,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 13:57:46,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:46,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:57:46,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:57:46,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:57:46,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:57:46,194 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 13:57:46,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [191443200] [2020-10-13 13:57:46,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:57:46,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:57:46,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706504070] [2020-10-13 13:57:46,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:57:46,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:57:46,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:57:46,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:57:46,225 INFO L87 Difference]: Start difference. First operand 586 states. Second operand 5 states. [2020-10-13 13:57:53,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:57:53,130 INFO L93 Difference]: Finished difference Result 1679 states and 2993 transitions. [2020-10-13 13:57:53,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 13:57:53,132 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 238 [2020-10-13 13:57:53,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:57:53,162 INFO L225 Difference]: With dead ends: 1679 [2020-10-13 13:57:53,162 INFO L226 Difference]: Without dead ends: 1136 [2020-10-13 13:57:53,170 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:57:53,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1136 states. [2020-10-13 13:57:53,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 1134. [2020-10-13 13:57:53,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1134 states. [2020-10-13 13:57:53,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1134 states to 1134 states and 1771 transitions. [2020-10-13 13:57:53,344 INFO L78 Accepts]: Start accepts. Automaton has 1134 states and 1771 transitions. Word has length 238 [2020-10-13 13:57:53,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:57:53,345 INFO L479 AbstractCegarLoop]: Abstraction has 1134 states and 1771 transitions. [2020-10-13 13:57:53,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:57:53,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1134 states and 1771 transitions. [2020-10-13 13:57:53,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-13 13:57:53,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:57:53,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:57:53,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 13:57:53,355 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:57:53,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:57:53,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1451587555, now seen corresponding path program 1 times [2020-10-13 13:57:53,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:57:53,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725047596] [2020-10-13 13:57:53,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:57:53,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:53,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:53,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:54,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:54,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:54,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:54,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:54,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:54,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:54,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:55,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:56,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:56,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:56,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:58,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:58,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-13 13:57:58,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 13:57:58,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-13 13:57:58,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:58,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:57:58,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:57:58,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-13 13:57:58,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:57:58,998 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 13:57:58,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:57:59,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:57:59,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:57:59,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:57:59,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:57:59,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:57:59,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 13:57:59,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:57:59,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:57:59,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:57:59,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:57:59,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:57:59,184 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 13:57:59,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725047596] [2020-10-13 13:57:59,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:57:59,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:57:59,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101570605] [2020-10-13 13:57:59,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:57:59,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:57:59,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:57:59,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:57:59,190 INFO L87 Difference]: Start difference. First operand 1134 states and 1771 transitions. Second operand 5 states. [2020-10-13 13:58:04,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:58:04,654 INFO L93 Difference]: Finished difference Result 3336 states and 5208 transitions. [2020-10-13 13:58:04,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:58:04,654 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 240 [2020-10-13 13:58:04,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:58:04,667 INFO L225 Difference]: With dead ends: 3336 [2020-10-13 13:58:04,667 INFO L226 Difference]: Without dead ends: 2218 [2020-10-13 13:58:04,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:58:04,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2218 states. [2020-10-13 13:58:04,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2218 to 2216. [2020-10-13 13:58:04,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2216 states. [2020-10-13 13:58:04,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 3437 transitions. [2020-10-13 13:58:04,799 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 3437 transitions. Word has length 240 [2020-10-13 13:58:04,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:58:04,800 INFO L479 AbstractCegarLoop]: Abstraction has 2216 states and 3437 transitions. [2020-10-13 13:58:04,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:58:04,800 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 3437 transitions. [2020-10-13 13:58:04,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-13 13:58:04,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:58:04,808 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:58:04,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 13:58:04,809 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:58:04,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:58:04,809 INFO L82 PathProgramCache]: Analyzing trace with hash 400017491, now seen corresponding path program 1 times [2020-10-13 13:58:04,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:58:04,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474149579] [2020-10-13 13:58:04,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:58:04,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:04,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:04,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:05,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:05,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:05,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:05,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:05,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:05,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:06,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:06,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:06,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:06,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:06,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:06,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:09,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:09,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-13 13:58:09,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 13:58:09,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 13:58:09,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:09,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:58:09,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 13:58:09,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 13:58:09,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 13:58:10,392 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 13:58:10,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:58:10,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:10,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:10,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:10,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:58:10,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:58:10,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 13:58:10,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:10,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:58:10,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:58:10,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:58:10,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:10,497 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 13:58:10,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474149579] [2020-10-13 13:58:10,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:58:10,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:58:10,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755404085] [2020-10-13 13:58:10,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:58:10,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:58:10,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:58:10,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:58:10,504 INFO L87 Difference]: Start difference. First operand 2216 states and 3437 transitions. Second operand 4 states. [2020-10-13 13:58:15,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:58:15,854 INFO L93 Difference]: Finished difference Result 6583 states and 10205 transitions. [2020-10-13 13:58:15,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:58:15,855 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 242 [2020-10-13 13:58:15,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:58:15,877 INFO L225 Difference]: With dead ends: 6583 [2020-10-13 13:58:15,878 INFO L226 Difference]: Without dead ends: 4400 [2020-10-13 13:58:15,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:58:15,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4400 states. [2020-10-13 13:58:16,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4400 to 2230. [2020-10-13 13:58:16,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2230 states. [2020-10-13 13:58:16,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2230 states to 2230 states and 3454 transitions. [2020-10-13 13:58:16,027 INFO L78 Accepts]: Start accepts. Automaton has 2230 states and 3454 transitions. Word has length 242 [2020-10-13 13:58:16,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:58:16,027 INFO L479 AbstractCegarLoop]: Abstraction has 2230 states and 3454 transitions. [2020-10-13 13:58:16,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:58:16,028 INFO L276 IsEmpty]: Start isEmpty. Operand 2230 states and 3454 transitions. [2020-10-13 13:58:16,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-13 13:58:16,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:58:16,034 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:58:16,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 13:58:16,035 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:58:16,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:58:16,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1382329659, now seen corresponding path program 1 times [2020-10-13 13:58:16,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:58:16,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163206052] [2020-10-13 13:58:16,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:58:16,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:16,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:16,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:16,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:16,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:16,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:18,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:18,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:19,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:19,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:19,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:19,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:19,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:19,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:19,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:21,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:21,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 13:58:21,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 13:58:21,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 13:58:21,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:21,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:58:21,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 13:58:21,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 13:58:21,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:21,680 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 13:58:21,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:58:21,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:21,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:21,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:21,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:58:21,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:58:21,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 13:58:21,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:21,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:58:21,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:58:21,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:58:21,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:21,800 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 13:58:21,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163206052] [2020-10-13 13:58:21,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:58:21,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:58:21,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533713706] [2020-10-13 13:58:21,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:58:21,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:58:21,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:58:21,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:58:21,803 INFO L87 Difference]: Start difference. First operand 2230 states and 3454 transitions. Second operand 5 states. [2020-10-13 13:58:27,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:58:27,903 INFO L93 Difference]: Finished difference Result 6326 states and 9736 transitions. [2020-10-13 13:58:27,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:58:27,906 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 244 [2020-10-13 13:58:27,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:58:27,924 INFO L225 Difference]: With dead ends: 6326 [2020-10-13 13:58:27,925 INFO L226 Difference]: Without dead ends: 4392 [2020-10-13 13:58:27,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:58:27,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4392 states. [2020-10-13 13:58:28,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4392 to 2494. [2020-10-13 13:58:28,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2494 states. [2020-10-13 13:58:28,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2494 states to 2494 states and 3914 transitions. [2020-10-13 13:58:28,120 INFO L78 Accepts]: Start accepts. Automaton has 2494 states and 3914 transitions. Word has length 244 [2020-10-13 13:58:28,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:58:28,121 INFO L479 AbstractCegarLoop]: Abstraction has 2494 states and 3914 transitions. [2020-10-13 13:58:28,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:58:28,121 INFO L276 IsEmpty]: Start isEmpty. Operand 2494 states and 3914 transitions. [2020-10-13 13:58:28,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-13 13:58:28,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:58:28,134 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:58:28,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 13:58:28,135 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:58:28,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:58:28,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1484742750, now seen corresponding path program 1 times [2020-10-13 13:58:28,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:58:28,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041046487] [2020-10-13 13:58:28,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:58:28,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:28,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:28,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:28,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:28,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:29,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:29,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:29,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:29,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:29,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:29,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:30,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:30,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:30,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:30,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:30,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:31,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:33,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:33,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 13:58:33,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 13:58:33,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 13:58:33,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:33,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:58:33,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:58:33,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 13:58:33,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:33,722 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 13:58:33,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:58:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:33,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:33,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:33,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:58:33,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:58:33,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 13:58:33,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:33,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:58:33,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:58:33,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:58:33,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:33,827 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 13:58:33,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041046487] [2020-10-13 13:58:33,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:58:33,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:58:33,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479090610] [2020-10-13 13:58:33,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:58:33,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:58:33,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:58:33,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:58:33,830 INFO L87 Difference]: Start difference. First operand 2494 states and 3914 transitions. Second operand 5 states. [2020-10-13 13:58:38,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:58:38,579 INFO L93 Difference]: Finished difference Result 7045 states and 10986 transitions. [2020-10-13 13:58:38,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:58:38,580 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 244 [2020-10-13 13:58:38,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:58:38,599 INFO L225 Difference]: With dead ends: 7045 [2020-10-13 13:58:38,600 INFO L226 Difference]: Without dead ends: 4851 [2020-10-13 13:58:38,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:58:38,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4851 states. [2020-10-13 13:58:38,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4851 to 4849. [2020-10-13 13:58:38,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4849 states. [2020-10-13 13:58:38,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4849 states to 4849 states and 7532 transitions. [2020-10-13 13:58:38,879 INFO L78 Accepts]: Start accepts. Automaton has 4849 states and 7532 transitions. Word has length 244 [2020-10-13 13:58:38,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:58:38,881 INFO L479 AbstractCegarLoop]: Abstraction has 4849 states and 7532 transitions. [2020-10-13 13:58:38,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:58:38,881 INFO L276 IsEmpty]: Start isEmpty. Operand 4849 states and 7532 transitions. [2020-10-13 13:58:38,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-13 13:58:38,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:58:38,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:58:38,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 13:58:38,894 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:58:38,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:58:38,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1136272357, now seen corresponding path program 1 times [2020-10-13 13:58:38,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:58:38,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898281777] [2020-10-13 13:58:38,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:58:38,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:39,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:39,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:39,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:39,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:39,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:39,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:39,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:39,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:40,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:40,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:40,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:40,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:41,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:41,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:41,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:43,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:43,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-13 13:58:43,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 13:58:43,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 13:58:43,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:43,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:58:43,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 13:58:43,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-13 13:58:43,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:44,442 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 13:58:44,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:58:44,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:44,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:44,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:44,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:58:44,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:58:44,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:58:44,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:44,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:58:44,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:58:44,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:58:44,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:44,562 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 13:58:44,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898281777] [2020-10-13 13:58:44,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:58:44,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:58:44,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811901023] [2020-10-13 13:58:44,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:58:44,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:58:44,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:58:44,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:58:44,564 INFO L87 Difference]: Start difference. First operand 4849 states and 7532 transitions. Second operand 5 states. [2020-10-13 13:58:50,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:58:50,084 INFO L93 Difference]: Finished difference Result 13692 states and 21132 transitions. [2020-10-13 13:58:50,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:58:50,084 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 244 [2020-10-13 13:58:50,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:58:50,118 INFO L225 Difference]: With dead ends: 13692 [2020-10-13 13:58:50,118 INFO L226 Difference]: Without dead ends: 8936 [2020-10-13 13:58:50,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:58:50,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8936 states. [2020-10-13 13:58:50,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8936 to 8934. [2020-10-13 13:58:50,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8934 states. [2020-10-13 13:58:50,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8934 states to 8934 states and 13654 transitions. [2020-10-13 13:58:50,676 INFO L78 Accepts]: Start accepts. Automaton has 8934 states and 13654 transitions. Word has length 244 [2020-10-13 13:58:50,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:58:50,677 INFO L479 AbstractCegarLoop]: Abstraction has 8934 states and 13654 transitions. [2020-10-13 13:58:50,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:58:50,677 INFO L276 IsEmpty]: Start isEmpty. Operand 8934 states and 13654 transitions. [2020-10-13 13:58:50,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-13 13:58:50,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:58:50,693 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:58:50,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 13:58:50,693 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:58:50,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:58:50,694 INFO L82 PathProgramCache]: Analyzing trace with hash -618546630, now seen corresponding path program 1 times [2020-10-13 13:58:50,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:58:50,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853147970] [2020-10-13 13:58:50,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:58:50,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:50,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:50,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:51,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:51,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:51,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:52,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:52,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:52,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:52,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:52,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:52,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:52,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:52,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:52,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:55,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:55,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-13 13:58:55,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 13:58:55,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 13:58:55,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:55,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:58:55,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 13:58:55,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 13:58:55,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:56,241 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 13:58:56,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:58:56,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:58:56,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:58:56,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:58:56,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:58:56,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:58:56,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 13:58:56,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:58:56,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:58:56,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:58:56,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:58:56,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:58:56,322 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 13:58:56,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853147970] [2020-10-13 13:58:56,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:58:56,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:58:56,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496906542] [2020-10-13 13:58:56,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:58:56,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:58:56,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:58:56,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:58:56,324 INFO L87 Difference]: Start difference. First operand 8934 states and 13654 transitions. Second operand 5 states. [2020-10-13 13:59:02,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:59:02,132 INFO L93 Difference]: Finished difference Result 24314 states and 36900 transitions. [2020-10-13 13:59:02,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:59:02,132 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 246 [2020-10-13 13:59:02,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:59:02,170 INFO L225 Difference]: With dead ends: 24314 [2020-10-13 13:59:02,170 INFO L226 Difference]: Without dead ends: 16670 [2020-10-13 13:59:02,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:59:02,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16670 states. [2020-10-13 13:59:02,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16670 to 10253. [2020-10-13 13:59:02,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10253 states. [2020-10-13 13:59:02,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10253 states to 10253 states and 15810 transitions. [2020-10-13 13:59:02,773 INFO L78 Accepts]: Start accepts. Automaton has 10253 states and 15810 transitions. Word has length 246 [2020-10-13 13:59:02,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:59:02,773 INFO L479 AbstractCegarLoop]: Abstraction has 10253 states and 15810 transitions. [2020-10-13 13:59:02,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:59:02,773 INFO L276 IsEmpty]: Start isEmpty. Operand 10253 states and 15810 transitions. [2020-10-13 13:59:02,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-13 13:59:02,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:59:02,785 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:59:02,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 13:59:02,786 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:59:02,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:59:02,786 INFO L82 PathProgramCache]: Analyzing trace with hash 775460220, now seen corresponding path program 1 times [2020-10-13 13:59:02,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:59:02,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768971074] [2020-10-13 13:59:02,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:59:02,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:59:02,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:02,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:02,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:03,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:03,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:03,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:03,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:03,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:03,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:03,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:03,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:03,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:03,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:03,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:03,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:07,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:59:07,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-13 13:59:07,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 13:59:07,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 13:59:07,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:59:07,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:59:07,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 13:59:07,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 13:59:07,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:59:08,347 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 13:59:08,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:59:08,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:59:08,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:08,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:59:08,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:59:08,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:59:08,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 13:59:08,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:59:08,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:59:08,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:59:08,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:59:08,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:59:08,423 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 13:59:08,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768971074] [2020-10-13 13:59:08,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:59:08,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:59:08,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943702784] [2020-10-13 13:59:08,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:59:08,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:59:08,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:59:08,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:59:08,425 INFO L87 Difference]: Start difference. First operand 10253 states and 15810 transitions. Second operand 5 states. [2020-10-13 13:59:15,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:59:15,400 INFO L93 Difference]: Finished difference Result 26391 states and 40220 transitions. [2020-10-13 13:59:15,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:59:15,401 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 248 [2020-10-13 13:59:15,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:59:15,441 INFO L225 Difference]: With dead ends: 26391 [2020-10-13 13:59:15,441 INFO L226 Difference]: Without dead ends: 18605 [2020-10-13 13:59:15,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:59:15,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18605 states. [2020-10-13 13:59:16,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18605 to 12150. [2020-10-13 13:59:16,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12150 states. [2020-10-13 13:59:16,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12150 states to 12150 states and 18815 transitions. [2020-10-13 13:59:16,209 INFO L78 Accepts]: Start accepts. Automaton has 12150 states and 18815 transitions. Word has length 248 [2020-10-13 13:59:16,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:59:16,210 INFO L479 AbstractCegarLoop]: Abstraction has 12150 states and 18815 transitions. [2020-10-13 13:59:16,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:59:16,210 INFO L276 IsEmpty]: Start isEmpty. Operand 12150 states and 18815 transitions. [2020-10-13 13:59:16,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-13 13:59:16,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:59:16,224 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:59:16,224 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 13:59:16,224 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:59:16,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:59:16,225 INFO L82 PathProgramCache]: Analyzing trace with hash -189182466, now seen corresponding path program 1 times [2020-10-13 13:59:16,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:59:16,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014720535] [2020-10-13 13:59:16,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:59:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:59:16,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:16,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:16,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:16,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:16,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:16,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:16,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:16,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:17,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:17,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:17,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:17,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:21,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:59:21,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-13 13:59:21,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 13:59:21,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-13 13:59:21,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:59:21,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:59:21,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 13:59:21,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-13 13:59:21,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:59:21,733 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 13:59:21,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:59:21,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:59:21,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:21,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:59:21,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:59:21,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:59:21,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 13:59:21,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:59:21,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:59:21,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:59:21,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:59:21,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:59:21,827 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 13:59:21,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014720535] [2020-10-13 13:59:21,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:59:21,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:59:21,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442319175] [2020-10-13 13:59:21,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:59:21,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:59:21,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:59:21,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:59:21,830 INFO L87 Difference]: Start difference. First operand 12150 states and 18815 transitions. Second operand 4 states. [2020-10-13 13:59:28,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:59:28,960 INFO L93 Difference]: Finished difference Result 30237 states and 46065 transitions. [2020-10-13 13:59:28,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:59:28,961 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 250 [2020-10-13 13:59:28,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:59:29,002 INFO L225 Difference]: With dead ends: 30237 [2020-10-13 13:59:29,002 INFO L226 Difference]: Without dead ends: 22043 [2020-10-13 13:59:29,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:59:29,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22043 states. [2020-10-13 13:59:30,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22043 to 22029. [2020-10-13 13:59:30,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22029 states. [2020-10-13 13:59:30,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22029 states to 22029 states and 33568 transitions. [2020-10-13 13:59:30,353 INFO L78 Accepts]: Start accepts. Automaton has 22029 states and 33568 transitions. Word has length 250 [2020-10-13 13:59:30,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:59:30,353 INFO L479 AbstractCegarLoop]: Abstraction has 22029 states and 33568 transitions. [2020-10-13 13:59:30,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:59:30,354 INFO L276 IsEmpty]: Start isEmpty. Operand 22029 states and 33568 transitions. [2020-10-13 13:59:30,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-13 13:59:30,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:59:30,379 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:59:30,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 13:59:30,379 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:59:30,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:59:30,380 INFO L82 PathProgramCache]: Analyzing trace with hash 893939920, now seen corresponding path program 1 times [2020-10-13 13:59:30,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:59:30,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098276178] [2020-10-13 13:59:30,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:59:30,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:59:30,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:30,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:30,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:30,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:30,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:30,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:30,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:32,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:32,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:32,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:32,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:32,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:33,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:33,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:34,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:34,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:34,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:35,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:59:35,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-10-13 13:59:35,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 13:59:35,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-13 13:59:35,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:59:35,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 13:59:35,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-13 13:59:35,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 13:59:35,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:59:35,936 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 13:59:35,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:59:35,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:59:35,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:35,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:59:35,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:59:35,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:59:35,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 13:59:35,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:59:35,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:59:35,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:59:35,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:59:35,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:59:36,006 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 13:59:36,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1098276178] [2020-10-13 13:59:36,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:59:36,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 13:59:36,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121365821] [2020-10-13 13:59:36,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 13:59:36,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:59:36,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 13:59:36,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 13:59:36,008 INFO L87 Difference]: Start difference. First operand 22029 states and 33568 transitions. Second operand 5 states. [2020-10-13 13:59:40,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:59:40,623 INFO L93 Difference]: Finished difference Result 34651 states and 52229 transitions. [2020-10-13 13:59:40,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 13:59:40,624 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 250 [2020-10-13 13:59:40,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:59:40,655 INFO L225 Difference]: With dead ends: 34651 [2020-10-13 13:59:40,656 INFO L226 Difference]: Without dead ends: 19201 [2020-10-13 13:59:40,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 13:59:40,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19201 states. [2020-10-13 13:59:41,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19201 to 18969. [2020-10-13 13:59:41,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18969 states. [2020-10-13 13:59:41,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18969 states to 18969 states and 28915 transitions. [2020-10-13 13:59:41,767 INFO L78 Accepts]: Start accepts. Automaton has 18969 states and 28915 transitions. Word has length 250 [2020-10-13 13:59:41,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:59:41,768 INFO L479 AbstractCegarLoop]: Abstraction has 18969 states and 28915 transitions. [2020-10-13 13:59:41,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 13:59:41,768 INFO L276 IsEmpty]: Start isEmpty. Operand 18969 states and 28915 transitions. [2020-10-13 13:59:41,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-13 13:59:41,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:59:41,789 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:59:41,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 13:59:41,789 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:59:41,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:59:41,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1319244889, now seen corresponding path program 1 times [2020-10-13 13:59:41,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:59:41,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570302169] [2020-10-13 13:59:41,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:59:41,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:59:42,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:42,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:42,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:42,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:42,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:42,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:42,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:42,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:42,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:42,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:42,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:46,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:59:46,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-10-13 13:59:46,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-13 13:59:46,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 13:59:47,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:59:47,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 13:59:47,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 13:59:47,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 13:59:47,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:59:47,404 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 13:59:47,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 13:59:47,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:59:47,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:47,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 13:59:47,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 13:59:47,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 13:59:47,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 13:59:47,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 13:59:47,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 13:59:47,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 13:59:47,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 13:59:47,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 13:59:47,493 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 13:59:47,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570302169] [2020-10-13 13:59:47,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 13:59:47,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 13:59:47,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744179168] [2020-10-13 13:59:47,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 13:59:47,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 13:59:47,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 13:59:47,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:59:47,494 INFO L87 Difference]: Start difference. First operand 18969 states and 28915 transitions. Second operand 4 states. [2020-10-13 13:59:55,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 13:59:55,177 INFO L93 Difference]: Finished difference Result 46406 states and 69954 transitions. [2020-10-13 13:59:55,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 13:59:55,178 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 251 [2020-10-13 13:59:55,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 13:59:55,221 INFO L225 Difference]: With dead ends: 46406 [2020-10-13 13:59:55,221 INFO L226 Difference]: Without dead ends: 32590 [2020-10-13 13:59:55,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 13:59:55,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32590 states. [2020-10-13 13:59:57,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32590 to 31966. [2020-10-13 13:59:57,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31966 states. [2020-10-13 13:59:57,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31966 states to 31966 states and 48316 transitions. [2020-10-13 13:59:57,192 INFO L78 Accepts]: Start accepts. Automaton has 31966 states and 48316 transitions. Word has length 251 [2020-10-13 13:59:57,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 13:59:57,193 INFO L479 AbstractCegarLoop]: Abstraction has 31966 states and 48316 transitions. [2020-10-13 13:59:57,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 13:59:57,193 INFO L276 IsEmpty]: Start isEmpty. Operand 31966 states and 48316 transitions. [2020-10-13 13:59:57,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-13 13:59:57,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 13:59:57,222 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:59:57,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 13:59:57,222 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 13:59:57,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 13:59:57,223 INFO L82 PathProgramCache]: Analyzing trace with hash 85437029, now seen corresponding path program 1 times [2020-10-13 13:59:57,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 13:59:57,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1812082833] [2020-10-13 13:59:57,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 13:59:57,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 13:59:57,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:57,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:57,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:57,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:57,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:57,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:57,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:57,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:58,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:58,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:58,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:58,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 13:59:58,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:02,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:00:02,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-13 14:00:02,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:00:02,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 14:00:02,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:00:02,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 14:00:02,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 14:00:02,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 14:00:02,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:00:02,916 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:00:02,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:00:02,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:00:02,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:02,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:00:02,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:00:02,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:00:02,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 14:00:02,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:00:02,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:00:02,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:00:02,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 14:00:02,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:00:03,014 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 14:00:03,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1812082833] [2020-10-13 14:00:03,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:00:03,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:00:03,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231975468] [2020-10-13 14:00:03,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 14:00:03,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:00:03,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 14:00:03,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:00:03,016 INFO L87 Difference]: Start difference. First operand 31966 states and 48316 transitions. Second operand 6 states. [2020-10-13 14:00:03,443 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 274 [2020-10-13 14:00:09,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:00:09,873 INFO L93 Difference]: Finished difference Result 62308 states and 93695 transitions. [2020-10-13 14:00:09,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 14:00:09,874 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 252 [2020-10-13 14:00:09,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:00:09,922 INFO L225 Difference]: With dead ends: 62308 [2020-10-13 14:00:09,922 INFO L226 Difference]: Without dead ends: 45251 [2020-10-13 14:00:09,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 14:00:09,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45251 states. [2020-10-13 14:00:14,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45251 to 45249. [2020-10-13 14:00:14,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45249 states. [2020-10-13 14:00:14,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45249 states to 45249 states and 68097 transitions. [2020-10-13 14:00:14,204 INFO L78 Accepts]: Start accepts. Automaton has 45249 states and 68097 transitions. Word has length 252 [2020-10-13 14:00:14,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:00:14,204 INFO L479 AbstractCegarLoop]: Abstraction has 45249 states and 68097 transitions. [2020-10-13 14:00:14,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 14:00:14,204 INFO L276 IsEmpty]: Start isEmpty. Operand 45249 states and 68097 transitions. [2020-10-13 14:00:14,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-13 14:00:14,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:00:14,245 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:00:14,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 14:00:14,246 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:00:14,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:00:14,246 INFO L82 PathProgramCache]: Analyzing trace with hash 122478491, now seen corresponding path program 1 times [2020-10-13 14:00:14,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:00:14,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [68856483] [2020-10-13 14:00:14,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:00:14,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:00:14,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:14,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:14,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:14,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:14,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:14,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:14,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:14,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:14,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:15,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:15,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:17,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:17,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:19,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:00:19,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-13 14:00:19,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 14:00:19,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-13 14:00:19,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:00:19,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:00:19,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:00:19,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-13 14:00:19,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:00:19,823 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:00:19,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:00:19,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:00:19,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:19,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:00:19,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:00:19,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:00:19,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 14:00:19,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:00:19,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:00:19,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:00:19,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:00:19,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:00:19,933 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 14:00:19,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [68856483] [2020-10-13 14:00:19,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:00:19,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:00:19,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714897064] [2020-10-13 14:00:19,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:00:19,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:00:19,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:00:19,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:00:19,936 INFO L87 Difference]: Start difference. First operand 45249 states and 68097 transitions. Second operand 5 states. [2020-10-13 14:00:32,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:00:32,398 INFO L93 Difference]: Finished difference Result 131165 states and 196617 transitions. [2020-10-13 14:00:32,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:00:32,400 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 252 [2020-10-13 14:00:32,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:00:32,505 INFO L225 Difference]: With dead ends: 131165 [2020-10-13 14:00:32,505 INFO L226 Difference]: Without dead ends: 87000 [2020-10-13 14:00:32,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:00:32,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87000 states. [2020-10-13 14:00:41,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87000 to 86998. [2020-10-13 14:00:41,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86998 states. [2020-10-13 14:00:41,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86998 states to 86998 states and 129590 transitions. [2020-10-13 14:00:41,422 INFO L78 Accepts]: Start accepts. Automaton has 86998 states and 129590 transitions. Word has length 252 [2020-10-13 14:00:41,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:00:41,422 INFO L479 AbstractCegarLoop]: Abstraction has 86998 states and 129590 transitions. [2020-10-13 14:00:41,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:00:41,422 INFO L276 IsEmpty]: Start isEmpty. Operand 86998 states and 129590 transitions. [2020-10-13 14:00:41,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-13 14:00:41,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:00:41,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:00:41,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 14:00:41,483 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:00:41,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:00:41,483 INFO L82 PathProgramCache]: Analyzing trace with hash -2014385029, now seen corresponding path program 1 times [2020-10-13 14:00:41,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:00:41,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212624776] [2020-10-13 14:00:41,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:00:41,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:00:41,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:41,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:41,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:41,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:41,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:41,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:41,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:42,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:42,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:42,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:42,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:42,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:46,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:00:46,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-13 14:00:46,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-13 14:00:46,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-13 14:00:46,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:00:46,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:00:46,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 14:00:46,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-13 14:00:46,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:00:46,968 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:00:46,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:00:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:00:46,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:00:46,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:00:46,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:00:46,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:00:46,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:00:46,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:00:46,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:00:46,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:00:46,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:00:46,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:00:47,068 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 14:00:47,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212624776] [2020-10-13 14:00:47,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:00:47,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:00:47,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37670468] [2020-10-13 14:00:47,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:00:47,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:00:47,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:00:47,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:00:47,070 INFO L87 Difference]: Start difference. First operand 86998 states and 129590 transitions. Second operand 4 states. [2020-10-13 14:01:07,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:01:07,338 INFO L93 Difference]: Finished difference Result 248866 states and 368697 transitions. [2020-10-13 14:01:07,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:01:07,338 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 254 [2020-10-13 14:01:07,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:01:07,536 INFO L225 Difference]: With dead ends: 248866 [2020-10-13 14:01:07,536 INFO L226 Difference]: Without dead ends: 170910 [2020-10-13 14:01:07,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:01:07,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170910 states.