/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 02:56:19,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 02:56:19,025 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 02:56:19,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 02:56:19,053 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 02:56:19,054 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 02:56:19,055 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 02:56:19,057 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 02:56:19,059 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 02:56:19,059 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 02:56:19,060 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 02:56:19,061 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 02:56:19,062 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 02:56:19,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 02:56:19,064 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 02:56:19,065 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 02:56:19,066 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 02:56:19,067 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 02:56:19,068 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 02:56:19,070 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 02:56:19,071 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 02:56:19,072 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 02:56:19,073 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 02:56:19,074 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 02:56:19,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 02:56:19,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 02:56:19,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 02:56:19,078 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 02:56:19,079 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 02:56:19,080 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 02:56:19,080 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 02:56:19,081 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 02:56:19,081 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 02:56:19,082 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 02:56:19,083 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 02:56:19,083 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 02:56:19,084 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 02:56:19,084 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 02:56:19,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 02:56:19,086 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 02:56:19,086 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 02:56:19,087 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 [2020-10-15 02:56:19,109 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 02:56:19,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 02:56:19,113 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 02:56:19,114 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 02:56:19,114 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 02:56:19,114 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 02:56:19,114 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 02:56:19,115 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 02:56:19,115 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 02:56:19,117 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 02:56:19,117 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 02:56:19,118 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 02:56:19,118 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 02:56:19,118 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 02:56:19,118 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 02:56:19,118 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 02:56:19,118 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 02:56:19,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 02:56:19,119 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 02:56:19,119 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 02:56:19,119 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 02:56:19,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 02:56:19,120 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 02:56:19,124 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 02:56:19,124 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 02:56:19,125 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 02:56:19,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 02:56:19,125 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 02:56:19,125 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 02:56:19,125 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 02:56:19,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 02:56:19,424 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 02:56:19,428 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 02:56:19,429 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 02:56:19,430 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 02:56:19,431 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-15 02:56:19,497 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c99a9f89/e5b9cb86d80844fb9f0b64fd40a062fa/FLAG72736fe75 [2020-10-15 02:56:20,056 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 02:56:20,056 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-15 02:56:20,076 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c99a9f89/e5b9cb86d80844fb9f0b64fd40a062fa/FLAG72736fe75 [2020-10-15 02:56:20,339 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4c99a9f89/e5b9cb86d80844fb9f0b64fd40a062fa [2020-10-15 02:56:20,348 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 02:56:20,350 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 02:56:20,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 02:56:20,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 02:56:20,355 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 02:56:20,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:56:20" (1/1) ... [2020-10-15 02:56:20,359 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f98ced9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:20, skipping insertion in model container [2020-10-15 02:56:20,359 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:56:20" (1/1) ... [2020-10-15 02:56:20,367 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 02:56:20,439 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 02:56:21,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:56:21,105 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 02:56:21,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:56:21,567 INFO L208 MainTranslator]: Completed translation [2020-10-15 02:56:21,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:21 WrapperNode [2020-10-15 02:56:21,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 02:56:21,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 02:56:21,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 02:56:21,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 02:56:21,584 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:21" (1/1) ... [2020-10-15 02:56:21,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:21" (1/1) ... [2020-10-15 02:56:21,604 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:21" (1/1) ... [2020-10-15 02:56:21,605 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:21" (1/1) ... [2020-10-15 02:56:21,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:21" (1/1) ... [2020-10-15 02:56:21,664 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:21" (1/1) ... [2020-10-15 02:56:21,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:21" (1/1) ... [2020-10-15 02:56:21,677 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 02:56:21,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 02:56:21,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 02:56:21,678 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 02:56:21,679 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:21" (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 [2020-10-15 02:56:21,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 02:56:21,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 02:56:21,784 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-15 02:56:21,785 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 02:56:21,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 02:56:21,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 02:56:21,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-15 02:56:21,787 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-15 02:56:21,787 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-15 02:56:21,787 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-15 02:56:21,788 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-15 02:56:21,788 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-15 02:56:21,789 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-15 02:56:21,789 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-15 02:56:21,789 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-15 02:56:21,790 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-15 02:56:21,791 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-15 02:56:21,791 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-15 02:56:21,791 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 02:56:21,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 02:56:21,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 02:56:23,469 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 02:56:23,470 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 02:56:23,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:56:23 BoogieIcfgContainer [2020-10-15 02:56:23,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 02:56:23,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 02:56:23,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 02:56:23,482 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 02:56:23,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:56:20" (1/3) ... [2020-10-15 02:56:23,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44aa4745 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:56:23, skipping insertion in model container [2020-10-15 02:56:23,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:21" (2/3) ... [2020-10-15 02:56:23,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44aa4745 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:56:23, skipping insertion in model container [2020-10-15 02:56:23,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:56:23" (3/3) ... [2020-10-15 02:56:23,485 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-15 02:56:23,496 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 02:56:23,505 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-15 02:56:23,519 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-15 02:56:23,546 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 02:56:23,547 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 02:56:23,547 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 02:56:23,547 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 02:56:23,547 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 02:56:23,548 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 02:56:23,548 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 02:56:23,548 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 02:56:23,574 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states. [2020-10-15 02:56:23,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-15 02:56:23,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:56:23,595 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] [2020-10-15 02:56:23,596 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:56:23,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:56:23,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1699857891, now seen corresponding path program 1 times [2020-10-15 02:56:23,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:56:23,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [217385590] [2020-10-15 02:56:23,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:56:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:24,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:24,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:24,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:24,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:25,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:25,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:25,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:25,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:25,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:26,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:26,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:29,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:29,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-15 02:56:29,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 02:56:29,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-15 02:56:29,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:29,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:29,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:56:29,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:56:29,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-15 02:56:29,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 02:56:29,639 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-15 02:56:29,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:56:29,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:29,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:29,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:29,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:56:29,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:56:29,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 02:56:29,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:29,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:29,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:56:29,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:56:29,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:56:29,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:56:29,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:56:29,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [217385590] [2020-10-15 02:56:29,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:56:29,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:56:29,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503246402] [2020-10-15 02:56:29,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:56:29,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:56:29,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:56:29,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:56:29,752 INFO L87 Difference]: Start difference. First operand 393 states. Second operand 5 states. [2020-10-15 02:56:33,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:56:33,720 INFO L93 Difference]: Finished difference Result 1126 states and 2022 transitions. [2020-10-15 02:56:33,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 02:56:33,722 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-15 02:56:33,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:56:33,743 INFO L225 Difference]: With dead ends: 1126 [2020-10-15 02:56:33,744 INFO L226 Difference]: Without dead ends: 750 [2020-10-15 02:56:33,750 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 [2020-10-15 02:56:33,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2020-10-15 02:56:33,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 724. [2020-10-15 02:56:33,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 724 states. [2020-10-15 02:56:33,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1031 transitions. [2020-10-15 02:56:33,853 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1031 transitions. Word has length 145 [2020-10-15 02:56:33,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:56:33,854 INFO L479 AbstractCegarLoop]: Abstraction has 724 states and 1031 transitions. [2020-10-15 02:56:33,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:56:33,854 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1031 transitions. [2020-10-15 02:56:33,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-15 02:56:33,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:56:33,860 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] [2020-10-15 02:56:33,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 02:56:33,861 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:56:33,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:56:33,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1633193528, now seen corresponding path program 1 times [2020-10-15 02:56:33,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:56:33,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70347296] [2020-10-15 02:56:33,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:56:33,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:33,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:33,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:34,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:34,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:34,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:34,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:34,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:34,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:35,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:35,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:36,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:36,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:37,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:37,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:38,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:38,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-15 02:56:38,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 02:56:38,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-15 02:56:38,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:38,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:38,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:56:38,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:56:38,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-15 02:56:38,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:56:39,314 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-15 02:56:39,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:56:39,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:39,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:39,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:39,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:56:39,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:56:39,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 02:56:39,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:39,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:39,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:56:39,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:56:39,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:56:39,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:56:39,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:56:39,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [70347296] [2020-10-15 02:56:39,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:56:39,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:56:39,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234662637] [2020-10-15 02:56:39,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:56:39,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:56:39,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:56:39,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:56:39,391 INFO L87 Difference]: Start difference. First operand 724 states and 1031 transitions. Second operand 5 states. [2020-10-15 02:56:42,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:56:42,333 INFO L93 Difference]: Finished difference Result 2098 states and 2976 transitions. [2020-10-15 02:56:42,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:56:42,334 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-15 02:56:42,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:56:42,343 INFO L225 Difference]: With dead ends: 2098 [2020-10-15 02:56:42,343 INFO L226 Difference]: Without dead ends: 1402 [2020-10-15 02:56:42,351 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 [2020-10-15 02:56:42,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1402 states. [2020-10-15 02:56:42,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1402 to 1376. [2020-10-15 02:56:42,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1376 states. [2020-10-15 02:56:42,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 1947 transitions. [2020-10-15 02:56:42,441 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 1947 transitions. Word has length 146 [2020-10-15 02:56:42,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:56:42,443 INFO L479 AbstractCegarLoop]: Abstraction has 1376 states and 1947 transitions. [2020-10-15 02:56:42,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:56:42,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 1947 transitions. [2020-10-15 02:56:42,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-15 02:56:42,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:56:42,451 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] [2020-10-15 02:56:42,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 02:56:42,451 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:56:42,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:56:42,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1804279176, now seen corresponding path program 1 times [2020-10-15 02:56:42,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:56:42,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501858446] [2020-10-15 02:56:42,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:56:42,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:42,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:42,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:42,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:42,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:42,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:43,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:43,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:43,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:46,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:46,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:46,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:46,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:47,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:47,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:47,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-15 02:56:47,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 02:56:47,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-15 02:56:47,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:47,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:47,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:56:47,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:56:47,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-15 02:56:47,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:56:47,921 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-15 02:56:47,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:56:47,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:47,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:47,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:47,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:56:47,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:56:47,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-15 02:56:47,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:47,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:47,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:56:47,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:56:47,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:56:47,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:56:48,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:56:48,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501858446] [2020-10-15 02:56:48,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:56:48,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:56:48,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632394147] [2020-10-15 02:56:48,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:56:48,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:56:48,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:56:48,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:56:48,089 INFO L87 Difference]: Start difference. First operand 1376 states and 1947 transitions. Second operand 5 states. [2020-10-15 02:56:51,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:56:51,316 INFO L93 Difference]: Finished difference Result 3964 states and 5576 transitions. [2020-10-15 02:56:51,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:56:51,319 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-15 02:56:51,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:56:51,332 INFO L225 Difference]: With dead ends: 3964 [2020-10-15 02:56:51,332 INFO L226 Difference]: Without dead ends: 2648 [2020-10-15 02:56:51,336 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 [2020-10-15 02:56:51,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2648 states. [2020-10-15 02:56:51,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2648 to 2622. [2020-10-15 02:56:51,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2622 states. [2020-10-15 02:56:51,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2622 states to 2622 states and 3671 transitions. [2020-10-15 02:56:51,464 INFO L78 Accepts]: Start accepts. Automaton has 2622 states and 3671 transitions. Word has length 147 [2020-10-15 02:56:51,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:56:51,465 INFO L479 AbstractCegarLoop]: Abstraction has 2622 states and 3671 transitions. [2020-10-15 02:56:51,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:56:51,465 INFO L276 IsEmpty]: Start isEmpty. Operand 2622 states and 3671 transitions. [2020-10-15 02:56:51,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-15 02:56:51,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:56:51,471 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] [2020-10-15 02:56:51,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 02:56:51,472 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:56:51,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:56:51,473 INFO L82 PathProgramCache]: Analyzing trace with hash -65939012, now seen corresponding path program 1 times [2020-10-15 02:56:51,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:56:51,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1504833155] [2020-10-15 02:56:51,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:56:51,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:51,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:51,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:51,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:51,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:51,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:51,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:51,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:56,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:56,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:56,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:56,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:56,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-15 02:56:56,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-15 02:56:56,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 02:56:56,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:56,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:56,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:56:56,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:56:56,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-15 02:56:56,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:56:56,823 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-15 02:56:56,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:56:56,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:56:56,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:56:56,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:56:56,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:56:56,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:56:56,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 02:56:56,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:56:56,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:56:56,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:56:56,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:56:56,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:56:56,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:56:56,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:56:56,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1504833155] [2020-10-15 02:56:56,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:56:56,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:56:56,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281553732] [2020-10-15 02:56:56,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:56:56,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:56:56,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:56:56,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:56:56,911 INFO L87 Difference]: Start difference. First operand 2622 states and 3671 transitions. Second operand 5 states. [2020-10-15 02:56:59,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:56:59,969 INFO L93 Difference]: Finished difference Result 7611 states and 10595 transitions. [2020-10-15 02:56:59,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:56:59,969 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-15 02:56:59,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:56:59,999 INFO L225 Difference]: With dead ends: 7611 [2020-10-15 02:56:59,999 INFO L226 Difference]: Without dead ends: 5037 [2020-10-15 02:57:00,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:57:00,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5037 states. [2020-10-15 02:57:00,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5037 to 5017. [2020-10-15 02:57:00,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5017 states. [2020-10-15 02:57:00,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5017 states to 5017 states and 6909 transitions. [2020-10-15 02:57:00,224 INFO L78 Accepts]: Start accepts. Automaton has 5017 states and 6909 transitions. Word has length 148 [2020-10-15 02:57:00,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:57:00,226 INFO L479 AbstractCegarLoop]: Abstraction has 5017 states and 6909 transitions. [2020-10-15 02:57:00,227 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:57:00,227 INFO L276 IsEmpty]: Start isEmpty. Operand 5017 states and 6909 transitions. [2020-10-15 02:57:00,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-15 02:57:00,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:57:00,236 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] [2020-10-15 02:57:00,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 02:57:00,237 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:57:00,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:57:00,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1831472665, now seen corresponding path program 1 times [2020-10-15 02:57:00,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:57:00,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890220465] [2020-10-15 02:57:00,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:57:00,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:00,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:00,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:00,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:00,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:00,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:00,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:00,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:00,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:00,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:02,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:02,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:05,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:05,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-15 02:57:05,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-15 02:57:05,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-15 02:57:05,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:05,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:05,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:57:05,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:57:05,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-15 02:57:05,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:05,598 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-15 02:57:05,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:57:05,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:05,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:05,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:05,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:57:05,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:57:05,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 02:57:05,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:05,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:05,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:57:05,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:57:05,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:57:05,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:57:05,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:57:05,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890220465] [2020-10-15 02:57:05,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:57:05,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:57:05,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516955358] [2020-10-15 02:57:05,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:57:05,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:57:05,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:57:05,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:57:05,678 INFO L87 Difference]: Start difference. First operand 5017 states and 6909 transitions. Second operand 5 states. [2020-10-15 02:57:09,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:57:09,429 INFO L93 Difference]: Finished difference Result 14280 states and 19667 transitions. [2020-10-15 02:57:09,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:57:09,430 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-15 02:57:09,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:57:09,473 INFO L225 Difference]: With dead ends: 14280 [2020-10-15 02:57:09,473 INFO L226 Difference]: Without dead ends: 9693 [2020-10-15 02:57:09,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:57:09,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9693 states. [2020-10-15 02:57:09,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9693 to 9670. [2020-10-15 02:57:09,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9670 states. [2020-10-15 02:57:09,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9670 states to 9670 states and 13120 transitions. [2020-10-15 02:57:09,961 INFO L78 Accepts]: Start accepts. Automaton has 9670 states and 13120 transitions. Word has length 149 [2020-10-15 02:57:09,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:57:09,961 INFO L479 AbstractCegarLoop]: Abstraction has 9670 states and 13120 transitions. [2020-10-15 02:57:09,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:57:09,961 INFO L276 IsEmpty]: Start isEmpty. Operand 9670 states and 13120 transitions. [2020-10-15 02:57:09,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-15 02:57:09,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:57:09,977 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] [2020-10-15 02:57:09,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 02:57:09,978 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:57:09,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:57:09,978 INFO L82 PathProgramCache]: Analyzing trace with hash -487162854, now seen corresponding path program 1 times [2020-10-15 02:57:09,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:57:09,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304195222] [2020-10-15 02:57:09,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:57:10,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:10,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:10,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:10,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:10,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:10,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:10,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:15,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:15,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-15 02:57:15,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:57:15,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 02:57:15,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:15,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:15,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:57:15,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 02:57:15,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 02:57:15,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:57:15,280 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-15 02:57:15,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:57:15,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:15,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:15,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:15,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:57:15,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:57:15,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:57:15,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:15,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:15,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:57:15,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:57:15,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:57:15,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:57:15,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:57:15,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304195222] [2020-10-15 02:57:15,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:57:15,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:57:15,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472521151] [2020-10-15 02:57:15,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:57:15,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:57:15,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:57:15,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:57:15,335 INFO L87 Difference]: Start difference. First operand 9670 states and 13120 transitions. Second operand 5 states. [2020-10-15 02:57:17,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:57:17,280 INFO L93 Difference]: Finished difference Result 15829 states and 21440 transitions. [2020-10-15 02:57:17,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:57:17,280 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-10-15 02:57:17,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:57:17,305 INFO L225 Difference]: With dead ends: 15829 [2020-10-15 02:57:17,306 INFO L226 Difference]: Without dead ends: 6226 [2020-10-15 02:57:17,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:57:17,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6226 states. [2020-10-15 02:57:17,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6226 to 6226. [2020-10-15 02:57:17,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6226 states. [2020-10-15 02:57:17,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6226 states to 6226 states and 8407 transitions. [2020-10-15 02:57:17,586 INFO L78 Accepts]: Start accepts. Automaton has 6226 states and 8407 transitions. Word has length 150 [2020-10-15 02:57:17,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:57:17,586 INFO L479 AbstractCegarLoop]: Abstraction has 6226 states and 8407 transitions. [2020-10-15 02:57:17,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:57:17,587 INFO L276 IsEmpty]: Start isEmpty. Operand 6226 states and 8407 transitions. [2020-10-15 02:57:17,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-15 02:57:17,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:57:17,597 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] [2020-10-15 02:57:17,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 02:57:17,598 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:57:17,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:57:17,598 INFO L82 PathProgramCache]: Analyzing trace with hash 952295198, now seen corresponding path program 1 times [2020-10-15 02:57:17,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:57:17,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [766956309] [2020-10-15 02:57:17,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:57:17,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:17,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:17,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:17,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:17,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:17,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:17,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:20,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:20,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:22,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:22,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-15 02:57:22,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 02:57:22,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-15 02:57:22,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:22,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:22,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:57:22,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 02:57:22,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-15 02:57:22,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:22,905 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-15 02:57:22,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:57:22,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:22,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:22,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:22,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:57:22,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:57:22,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-15 02:57:22,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:22,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:22,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:57:22,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:57:22,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 02:57:22,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:57:23,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:57:23,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [766956309] [2020-10-15 02:57:23,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:57:23,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:57:23,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222612859] [2020-10-15 02:57:23,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 02:57:23,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:57:23,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 02:57:23,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:57:23,040 INFO L87 Difference]: Start difference. First operand 6226 states and 8407 transitions. Second operand 6 states. [2020-10-15 02:57:23,314 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-15 02:57:25,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:57:25,214 INFO L93 Difference]: Finished difference Result 11611 states and 15870 transitions. [2020-10-15 02:57:25,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 02:57:25,215 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2020-10-15 02:57:25,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:57:25,229 INFO L225 Difference]: With dead ends: 11611 [2020-10-15 02:57:25,230 INFO L226 Difference]: Without dead ends: 6226 [2020-10-15 02:57:25,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 02:57:25,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6226 states. [2020-10-15 02:57:25,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6226 to 6226. [2020-10-15 02:57:25,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6226 states. [2020-10-15 02:57:25,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6226 states to 6226 states and 8323 transitions. [2020-10-15 02:57:25,486 INFO L78 Accepts]: Start accepts. Automaton has 6226 states and 8323 transitions. Word has length 158 [2020-10-15 02:57:25,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:57:25,486 INFO L479 AbstractCegarLoop]: Abstraction has 6226 states and 8323 transitions. [2020-10-15 02:57:25,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 02:57:25,487 INFO L276 IsEmpty]: Start isEmpty. Operand 6226 states and 8323 transitions. [2020-10-15 02:57:25,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-15 02:57:25,495 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:57:25,495 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] [2020-10-15 02:57:25,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 02:57:25,496 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:57:25,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:57:25,496 INFO L82 PathProgramCache]: Analyzing trace with hash -137995768, now seen corresponding path program 1 times [2020-10-15 02:57:25,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:57:25,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190497071] [2020-10-15 02:57:25,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:57:25,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:25,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:25,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:25,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:25,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:25,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:28,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:28,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:28,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:28,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:30,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:30,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-15 02:57:30,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 02:57:30,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-15 02:57:30,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:30,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:30,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:57:30,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:57:30,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-15 02:57:30,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:57:30,820 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-15 02:57:30,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:57:30,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:30,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:30,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:30,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:57:30,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:57:30,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:57:30,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:30,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:30,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:57:30,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:57:30,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:57:30,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:30,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:57:30,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1190497071] [2020-10-15 02:57:30,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:57:30,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:57:30,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8213414] [2020-10-15 02:57:30,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:57:30,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:57:30,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:57:30,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:57:30,953 INFO L87 Difference]: Start difference. First operand 6226 states and 8323 transitions. Second operand 5 states. [2020-10-15 02:57:34,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:57:34,347 INFO L93 Difference]: Finished difference Result 17876 states and 23887 transitions. [2020-10-15 02:57:34,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:57:34,347 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-10-15 02:57:34,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:57:34,373 INFO L225 Difference]: With dead ends: 17876 [2020-10-15 02:57:34,373 INFO L226 Difference]: Without dead ends: 12089 [2020-10-15 02:57:34,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:57:34,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12089 states. [2020-10-15 02:57:34,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12089 to 12052. [2020-10-15 02:57:34,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12052 states. [2020-10-15 02:57:34,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12052 states to 12052 states and 15913 transitions. [2020-10-15 02:57:34,913 INFO L78 Accepts]: Start accepts. Automaton has 12052 states and 15913 transitions. Word has length 158 [2020-10-15 02:57:34,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:57:34,914 INFO L479 AbstractCegarLoop]: Abstraction has 12052 states and 15913 transitions. [2020-10-15 02:57:34,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:57:34,914 INFO L276 IsEmpty]: Start isEmpty. Operand 12052 states and 15913 transitions. [2020-10-15 02:57:34,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-15 02:57:34,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:57:34,924 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] [2020-10-15 02:57:34,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 02:57:34,925 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:57:34,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:57:34,925 INFO L82 PathProgramCache]: Analyzing trace with hash -5099548, now seen corresponding path program 1 times [2020-10-15 02:57:34,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:57:34,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1263456469] [2020-10-15 02:57:34,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:57:34,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:34,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:35,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:35,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:35,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:35,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:35,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:39,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:39,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-15 02:57:39,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:57:39,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-15 02:57:39,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:39,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:39,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:57:39,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-15 02:57:39,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-15 02:57:39,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:40,291 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-15 02:57:40,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:57:40,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:40,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:40,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:40,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:57:40,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:57:40,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 02:57:40,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:40,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:40,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:57:40,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:57:40,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:57:40,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:40,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:57:40,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1263456469] [2020-10-15 02:57:40,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:57:40,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 02:57:40,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12391307] [2020-10-15 02:57:40,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 02:57:40,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:57:40,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 02:57:40,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:57:40,335 INFO L87 Difference]: Start difference. First operand 12052 states and 15913 transitions. Second operand 6 states. [2020-10-15 02:57:40,583 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 02:57:43,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:57:43,646 INFO L93 Difference]: Finished difference Result 23467 states and 32333 transitions. [2020-10-15 02:57:43,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 02:57:43,646 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 159 [2020-10-15 02:57:43,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:57:43,679 INFO L225 Difference]: With dead ends: 23467 [2020-10-15 02:57:43,679 INFO L226 Difference]: Without dead ends: 18078 [2020-10-15 02:57:43,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 02:57:43,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18078 states. [2020-10-15 02:57:45,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18078 to 18004. [2020-10-15 02:57:45,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18004 states. [2020-10-15 02:57:45,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18004 states to 18004 states and 24105 transitions. [2020-10-15 02:57:45,344 INFO L78 Accepts]: Start accepts. Automaton has 18004 states and 24105 transitions. Word has length 159 [2020-10-15 02:57:45,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:57:45,345 INFO L479 AbstractCegarLoop]: Abstraction has 18004 states and 24105 transitions. [2020-10-15 02:57:45,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 02:57:45,345 INFO L276 IsEmpty]: Start isEmpty. Operand 18004 states and 24105 transitions. [2020-10-15 02:57:45,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-15 02:57:45,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:57:45,358 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] [2020-10-15 02:57:45,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 02:57:45,359 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:57:45,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:57:45,359 INFO L82 PathProgramCache]: Analyzing trace with hash 39169189, now seen corresponding path program 1 times [2020-10-15 02:57:45,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:57:45,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021449177] [2020-10-15 02:57:45,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:57:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:45,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:45,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:45,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:45,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:45,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:45,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:50,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:50,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-15 02:57:50,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 02:57:50,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-15 02:57:50,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:50,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:50,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:57:50,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-15 02:57:50,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-15 02:57:50,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:50,660 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-15 02:57:50,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:57:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:50,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:50,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:50,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:57:50,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:57:50,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:57:50,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:50,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:50,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:57:50,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:57:50,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:57:50,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:57:50,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:57:50,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021449177] [2020-10-15 02:57:50,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:57:50,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 02:57:50,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348527971] [2020-10-15 02:57:50,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 02:57:50,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:57:50,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 02:57:50,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 02:57:50,697 INFO L87 Difference]: Start difference. First operand 18004 states and 24105 transitions. Second operand 4 states. [2020-10-15 02:57:50,934 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 02:57:53,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:57:53,513 INFO L93 Difference]: Finished difference Result 33098 states and 46215 transitions. [2020-10-15 02:57:53,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:57:53,514 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2020-10-15 02:57:53,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:57:53,556 INFO L225 Difference]: With dead ends: 33098 [2020-10-15 02:57:53,556 INFO L226 Difference]: Without dead ends: 26221 [2020-10-15 02:57:53,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:57:53,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26221 states. [2020-10-15 02:57:54,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26221 to 26219. [2020-10-15 02:57:54,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26219 states. [2020-10-15 02:57:54,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26219 states to 26219 states and 35446 transitions. [2020-10-15 02:57:54,718 INFO L78 Accepts]: Start accepts. Automaton has 26219 states and 35446 transitions. Word has length 159 [2020-10-15 02:57:54,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:57:54,718 INFO L479 AbstractCegarLoop]: Abstraction has 26219 states and 35446 transitions. [2020-10-15 02:57:54,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 02:57:54,718 INFO L276 IsEmpty]: Start isEmpty. Operand 26219 states and 35446 transitions. [2020-10-15 02:57:54,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-15 02:57:54,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:57:54,737 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] [2020-10-15 02:57:54,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 02:57:54,737 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:57:54,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:57:54,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1952530805, now seen corresponding path program 1 times [2020-10-15 02:57:54,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:57:54,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [863446577] [2020-10-15 02:57:54,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:57:54,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:57:54,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:54,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:54,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:54,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:54,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:57:59,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:57:59,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-15 02:57:59,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:57:59,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 02:57:59,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:57:59,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:57:59,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:57:59,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-15 02:57:59,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 02:57:59,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:58:00,034 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-15 02:58:00,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:58:00,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:58:00,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:00,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:58:00,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:58:00,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:58:00,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:58:00,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:58:00,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:58:00,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:58:00,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:58:00,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:58:00,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:58:00,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:58:00,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [863446577] [2020-10-15 02:58:00,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:58:00,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:58:00,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756718131] [2020-10-15 02:58:00,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:58:00,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:58:00,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:58:00,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:58:00,067 INFO L87 Difference]: Start difference. First operand 26219 states and 35446 transitions. Second operand 5 states. [2020-10-15 02:58:02,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:58:02,593 INFO L93 Difference]: Finished difference Result 44611 states and 60411 transitions. [2020-10-15 02:58:02,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:58:02,594 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-15 02:58:02,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:58:02,611 INFO L225 Difference]: With dead ends: 44611 [2020-10-15 02:58:02,611 INFO L226 Difference]: Without dead ends: 18795 [2020-10-15 02:58:02,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:58:02,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18795 states. [2020-10-15 02:58:03,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18795 to 18793. [2020-10-15 02:58:03,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18793 states. [2020-10-15 02:58:03,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18793 states to 18793 states and 25408 transitions. [2020-10-15 02:58:03,481 INFO L78 Accepts]: Start accepts. Automaton has 18793 states and 25408 transitions. Word has length 159 [2020-10-15 02:58:03,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:58:03,481 INFO L479 AbstractCegarLoop]: Abstraction has 18793 states and 25408 transitions. [2020-10-15 02:58:03,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:58:03,481 INFO L276 IsEmpty]: Start isEmpty. Operand 18793 states and 25408 transitions. [2020-10-15 02:58:03,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-15 02:58:03,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:58:03,500 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] [2020-10-15 02:58:03,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 02:58:03,500 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:58:03,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:58:03,500 INFO L82 PathProgramCache]: Analyzing trace with hash -276207557, now seen corresponding path program 1 times [2020-10-15 02:58:03,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:58:03,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911319121] [2020-10-15 02:58:03,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:58:03,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:58:03,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:03,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:03,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:03,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:03,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:03,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:06,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:06,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:06,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:08,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:58:08,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-15 02:58:08,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-15 02:58:08,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 02:58:08,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:58:08,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:58:08,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:58:08,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 02:58:08,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-15 02:58:08,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:58:08,818 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-15 02:58:08,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:58:08,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:58:08,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:08,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:58:08,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:58:08,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:58:08,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 02:58:08,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:58:08,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:58:08,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:58:08,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:58:08,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 02:58:08,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:58:08,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:58:08,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911319121] [2020-10-15 02:58:08,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:58:08,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 02:58:08,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635904044] [2020-10-15 02:58:08,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 02:58:08,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:58:08,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 02:58:08,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 02:58:08,885 INFO L87 Difference]: Start difference. First operand 18793 states and 25408 transitions. Second operand 7 states. [2020-10-15 02:58:09,158 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-15 02:58:11,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:58:11,704 INFO L93 Difference]: Finished difference Result 36303 states and 49385 transitions. [2020-10-15 02:58:11,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 02:58:11,705 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 167 [2020-10-15 02:58:11,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:58:11,723 INFO L225 Difference]: With dead ends: 36303 [2020-10-15 02:58:11,723 INFO L226 Difference]: Without dead ends: 18793 [2020-10-15 02:58:11,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-15 02:58:11,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18793 states. [2020-10-15 02:58:12,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18793 to 18793. [2020-10-15 02:58:12,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18793 states. [2020-10-15 02:58:12,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18793 states to 18793 states and 25093 transitions. [2020-10-15 02:58:12,577 INFO L78 Accepts]: Start accepts. Automaton has 18793 states and 25093 transitions. Word has length 167 [2020-10-15 02:58:12,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:58:12,577 INFO L479 AbstractCegarLoop]: Abstraction has 18793 states and 25093 transitions. [2020-10-15 02:58:12,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 02:58:12,578 INFO L276 IsEmpty]: Start isEmpty. Operand 18793 states and 25093 transitions. [2020-10-15 02:58:12,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-15 02:58:12,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:58:12,586 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] [2020-10-15 02:58:12,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 02:58:12,587 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:58:12,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:58:12,587 INFO L82 PathProgramCache]: Analyzing trace with hash 316111333, now seen corresponding path program 1 times [2020-10-15 02:58:12,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:58:12,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1607166282] [2020-10-15 02:58:12,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:58:12,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:58:12,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:12,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:12,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:12,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:12,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:15,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:15,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:17,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:58:17,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-15 02:58:17,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 02:58:17,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-15 02:58:17,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:58:17,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:58:17,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 02:58:17,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:58:17,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-15 02:58:17,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:58:18,290 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-15 02:58:18,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:58:18,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:58:18,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:18,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:58:18,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:58:18,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:58:18,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 02:58:18,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:58:18,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:58:18,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:58:18,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:58:18,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:58:18,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:58:18,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:58:18,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1607166282] [2020-10-15 02:58:18,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:58:18,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-15 02:58:18,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746999483] [2020-10-15 02:58:18,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 02:58:18,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:58:18,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 02:58:18,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-15 02:58:18,489 INFO L87 Difference]: Start difference. First operand 18793 states and 25093 transitions. Second operand 13 states. [2020-10-15 02:58:19,225 WARN L193 SmtUtils]: Spent 601.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 208 [2020-10-15 02:58:26,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:58:26,011 INFO L93 Difference]: Finished difference Result 50674 states and 69224 transitions. [2020-10-15 02:58:26,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-15 02:58:26,011 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 167 [2020-10-15 02:58:26,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:58:26,053 INFO L225 Difference]: With dead ends: 50674 [2020-10-15 02:58:26,053 INFO L226 Difference]: Without dead ends: 47348 [2020-10-15 02:58:26,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=277, Invalid=983, Unknown=0, NotChecked=0, Total=1260 [2020-10-15 02:58:26,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47348 states. [2020-10-15 02:58:27,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47348 to 22181. [2020-10-15 02:58:27,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22181 states. [2020-10-15 02:58:27,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22181 states to 22181 states and 29067 transitions. [2020-10-15 02:58:27,570 INFO L78 Accepts]: Start accepts. Automaton has 22181 states and 29067 transitions. Word has length 167 [2020-10-15 02:58:27,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:58:27,570 INFO L479 AbstractCegarLoop]: Abstraction has 22181 states and 29067 transitions. [2020-10-15 02:58:27,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 02:58:27,571 INFO L276 IsEmpty]: Start isEmpty. Operand 22181 states and 29067 transitions. [2020-10-15 02:58:27,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-15 02:58:27,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:58:27,584 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] [2020-10-15 02:58:27,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 02:58:27,584 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:58:27,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:58:27,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1942932048, now seen corresponding path program 1 times [2020-10-15 02:58:27,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:58:27,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [446139633] [2020-10-15 02:58:27,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:58:27,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:58:27,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:27,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:27,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:27,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:27,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:32,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:58:32,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-15 02:58:32,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:58:32,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-15 02:58:32,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:58:32,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:58:32,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 02:58:32,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:58:32,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-15 02:58:32,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:58:33,024 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 38 [2020-10-15 02:58:33,502 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-15 02:58:33,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:58:33,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:58:33,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:33,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:58:33,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:58:33,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:58:33,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 02:58:33,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:58:33,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:58:33,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:58:33,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:58:33,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:58:33,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:58:33,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:58:33,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [446139633] [2020-10-15 02:58:33,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:58:33,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-15 02:58:33,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156273095] [2020-10-15 02:58:33,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 02:58:33,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:58:33,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 02:58:33,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-15 02:58:33,613 INFO L87 Difference]: Start difference. First operand 22181 states and 29067 transitions. Second operand 15 states. [2020-10-15 02:58:34,006 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-10-15 02:58:34,578 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-10-15 02:58:34,751 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-10-15 02:58:35,162 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-10-15 02:58:35,400 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-10-15 02:58:35,857 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2020-10-15 02:58:36,151 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2020-10-15 02:58:36,300 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-10-15 02:58:36,608 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-10-15 02:58:43,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:58:43,028 INFO L93 Difference]: Finished difference Result 42155 states and 57826 transitions. [2020-10-15 02:58:43,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 02:58:43,028 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 167 [2020-10-15 02:58:43,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:58:43,058 INFO L225 Difference]: With dead ends: 42155 [2020-10-15 02:58:43,059 INFO L226 Difference]: Without dead ends: 33538 [2020-10-15 02:58:43,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=157, Invalid=599, Unknown=0, NotChecked=0, Total=756 [2020-10-15 02:58:43,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33538 states. [2020-10-15 02:58:44,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33538 to 22789. [2020-10-15 02:58:44,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22789 states. [2020-10-15 02:58:44,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22789 states to 22789 states and 29771 transitions. [2020-10-15 02:58:44,635 INFO L78 Accepts]: Start accepts. Automaton has 22789 states and 29771 transitions. Word has length 167 [2020-10-15 02:58:44,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:58:44,636 INFO L479 AbstractCegarLoop]: Abstraction has 22789 states and 29771 transitions. [2020-10-15 02:58:44,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 02:58:44,636 INFO L276 IsEmpty]: Start isEmpty. Operand 22789 states and 29771 transitions. [2020-10-15 02:58:44,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-15 02:58:44,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:58:44,649 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] [2020-10-15 02:58:44,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 02:58:44,650 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:58:44,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:58:44,650 INFO L82 PathProgramCache]: Analyzing trace with hash 737397974, now seen corresponding path program 1 times [2020-10-15 02:58:44,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:58:44,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1798419975] [2020-10-15 02:58:44,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:58:44,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:58:44,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:44,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:44,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:44,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:44,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:47,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:48,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:49,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:49,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:58:49,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-15 02:58:49,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-15 02:58:49,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-15 02:58:49,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:58:49,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:58:49,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 02:58:49,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:58:49,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-15 02:58:49,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:58:50,731 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-15 02:58:50,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:58:50,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:58:50,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:58:50,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:58:50,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:58:50,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:58:50,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 02:58:50,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:58:50,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:58:50,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:58:50,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:58:50,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:58:50,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:58:50,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:58:50,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1798419975] [2020-10-15 02:58:50,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:58:50,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-15 02:58:50,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518392650] [2020-10-15 02:58:50,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 02:58:50,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:58:50,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 02:58:50,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-15 02:58:50,825 INFO L87 Difference]: Start difference. First operand 22789 states and 29771 transitions. Second operand 16 states. [2020-10-15 02:58:51,133 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 93 [2020-10-15 02:58:52,208 WARN L193 SmtUtils]: Spent 999.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 271 [2020-10-15 02:58:56,235 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 50 [2020-10-15 02:59:03,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:59:03,299 INFO L93 Difference]: Finished difference Result 42123 states and 57192 transitions. [2020-10-15 02:59:03,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-15 02:59:03,300 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 167 [2020-10-15 02:59:03,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:59:03,335 INFO L225 Difference]: With dead ends: 42123 [2020-10-15 02:59:03,336 INFO L226 Difference]: Without dead ends: 38333 [2020-10-15 02:59:03,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=220, Invalid=1040, Unknown=0, NotChecked=0, Total=1260 [2020-10-15 02:59:03,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38333 states. [2020-10-15 02:59:05,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38333 to 25061. [2020-10-15 02:59:05,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25061 states. [2020-10-15 02:59:05,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25061 states to 25061 states and 32427 transitions. [2020-10-15 02:59:05,388 INFO L78 Accepts]: Start accepts. Automaton has 25061 states and 32427 transitions. Word has length 167 [2020-10-15 02:59:05,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:59:05,388 INFO L479 AbstractCegarLoop]: Abstraction has 25061 states and 32427 transitions. [2020-10-15 02:59:05,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 02:59:05,389 INFO L276 IsEmpty]: Start isEmpty. Operand 25061 states and 32427 transitions. [2020-10-15 02:59:05,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-15 02:59:05,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:59:05,406 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] [2020-10-15 02:59:05,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 02:59:05,406 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:59:05,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:59:05,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1568539580, now seen corresponding path program 1 times [2020-10-15 02:59:05,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:59:05,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114594717] [2020-10-15 02:59:05,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:59:05,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:59:05,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:05,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:05,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:05,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:05,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:08,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:08,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:10,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:59:10,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-15 02:59:10,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 02:59:10,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 02:59:10,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:59:10,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:59:10,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 02:59:10,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:59:10,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-15 02:59:10,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:59:10,957 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-15 02:59:10,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:59:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:59:10,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:10,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:59:10,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:59:10,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:59:10,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 02:59:10,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:59:10,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:59:10,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:59:10,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:59:10,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:59:10,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:59:11,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:59:11,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114594717] [2020-10-15 02:59:11,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:59:11,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 02:59:11,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562927532] [2020-10-15 02:59:11,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 02:59:11,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:59:11,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 02:59:11,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:59:11,021 INFO L87 Difference]: Start difference. First operand 25061 states and 32427 transitions. Second operand 11 states. [2020-10-15 02:59:11,308 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-10-15 02:59:22,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:59:22,662 INFO L93 Difference]: Finished difference Result 67228 states and 93446 transitions. [2020-10-15 02:59:22,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-15 02:59:22,663 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 167 [2020-10-15 02:59:22,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:59:22,724 INFO L225 Difference]: With dead ends: 67228 [2020-10-15 02:59:22,724 INFO L226 Difference]: Without dead ends: 58822 [2020-10-15 02:59:22,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2020-10-15 02:59:22,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58822 states. [2020-10-15 02:59:25,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58822 to 31283. [2020-10-15 02:59:25,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31283 states. [2020-10-15 02:59:25,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31283 states to 31283 states and 41071 transitions. [2020-10-15 02:59:25,805 INFO L78 Accepts]: Start accepts. Automaton has 31283 states and 41071 transitions. Word has length 167 [2020-10-15 02:59:25,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:59:25,805 INFO L479 AbstractCegarLoop]: Abstraction has 31283 states and 41071 transitions. [2020-10-15 02:59:25,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 02:59:25,805 INFO L276 IsEmpty]: Start isEmpty. Operand 31283 states and 41071 transitions. [2020-10-15 02:59:25,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-15 02:59:25,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:59:25,822 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] [2020-10-15 02:59:25,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 02:59:25,822 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:59:25,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:59:25,822 INFO L82 PathProgramCache]: Analyzing trace with hash -492867668, now seen corresponding path program 1 times [2020-10-15 02:59:25,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:59:25,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [461250633] [2020-10-15 02:59:25,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:59:26,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:59:26,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:26,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:26,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:26,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:26,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:28,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:29,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:31,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:59:31,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-15 02:59:31,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 02:59:31,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-15 02:59:31,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:59:31,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:59:31,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 02:59:31,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 02:59:31,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-15 02:59:31,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:59:31,829 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-15 02:59:31,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:59:31,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:59:31,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:31,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:59:31,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:59:31,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:59:31,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 02:59:31,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:59:31,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:59:31,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:59:31,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:59:31,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:59:31,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:59:31,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:59:31,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [461250633] [2020-10-15 02:59:31,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:59:31,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-15 02:59:31,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440350799] [2020-10-15 02:59:31,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 02:59:31,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:59:31,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 02:59:31,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-15 02:59:31,986 INFO L87 Difference]: Start difference. First operand 31283 states and 41071 transitions. Second operand 13 states. [2020-10-15 02:59:32,518 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 248 [2020-10-15 02:59:34,967 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2020-10-15 02:59:35,172 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 62 [2020-10-15 02:59:36,731 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 62 [2020-10-15 02:59:46,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:59:46,569 INFO L93 Difference]: Finished difference Result 68365 states and 93451 transitions. [2020-10-15 02:59:46,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-15 02:59:46,570 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 167 [2020-10-15 02:59:46,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:59:46,629 INFO L225 Difference]: With dead ends: 68365 [2020-10-15 02:59:46,630 INFO L226 Difference]: Without dead ends: 64071 [2020-10-15 02:59:46,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=266, Invalid=924, Unknown=0, NotChecked=0, Total=1190 [2020-10-15 02:59:46,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64071 states. [2020-10-15 02:59:50,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64071 to 33747. [2020-10-15 02:59:50,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33747 states. [2020-10-15 02:59:50,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33747 states to 33747 states and 43951 transitions. [2020-10-15 02:59:50,591 INFO L78 Accepts]: Start accepts. Automaton has 33747 states and 43951 transitions. Word has length 167 [2020-10-15 02:59:50,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:59:50,591 INFO L479 AbstractCegarLoop]: Abstraction has 33747 states and 43951 transitions. [2020-10-15 02:59:50,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 02:59:50,592 INFO L276 IsEmpty]: Start isEmpty. Operand 33747 states and 43951 transitions. [2020-10-15 02:59:50,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-15 02:59:50,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:59:50,609 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] [2020-10-15 02:59:50,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 02:59:50,609 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:59:50,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:59:50,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1340068097, now seen corresponding path program 1 times [2020-10-15 02:59:50,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:59:50,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421798350] [2020-10-15 02:59:50,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:59:50,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:59:50,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:50,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:50,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:50,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:50,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:55,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:59:55,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-15 02:59:55,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:59:55,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-15 02:59:55,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:59:55,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:59:55,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:59:55,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-15 02:59:55,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-15 02:59:55,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:59:55,928 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-15 02:59:55,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:59:55,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:59:55,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:59:55,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:59:55,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 02:59:55,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:59:55,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:59:55,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:59:55,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:59:55,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:59:55,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:59:55,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:59:55,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:59:55,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:59:55,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421798350] [2020-10-15 02:59:55,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:59:55,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 02:59:55,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768858094] [2020-10-15 02:59:55,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 02:59:55,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:59:55,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 02:59:55,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 02:59:55,965 INFO L87 Difference]: Start difference. First operand 33747 states and 43951 transitions. Second operand 4 states. [2020-10-15 02:59:56,219 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188