/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 09:20:58,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 09:20:58,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 09:20:58,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 09:20:58,085 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 09:20:58,086 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 09:20:58,087 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 09:20:58,089 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 09:20:58,091 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 09:20:58,091 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 09:20:58,092 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 09:20:58,094 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 09:20:58,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 09:20:58,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 09:20:58,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 09:20:58,097 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 09:20:58,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 09:20:58,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 09:20:58,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 09:20:58,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 09:20:58,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 09:20:58,105 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 09:20:58,106 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 09:20:58,107 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 09:20:58,113 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 09:20:58,113 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 09:20:58,114 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 09:20:58,116 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 09:20:58,116 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 09:20:58,117 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 09:20:58,117 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 09:20:58,118 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 09:20:58,119 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 09:20:58,119 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 09:20:58,120 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 09:20:58,120 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 09:20:58,121 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 09:20:58,121 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 09:20:58,121 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 09:20:58,122 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 09:20:58,123 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 09:20:58,124 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 [2020-10-14 09:20:58,151 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 09:20:58,151 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 09:20:58,152 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 09:20:58,152 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 09:20:58,153 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 09:20:58,153 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 09:20:58,153 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 09:20:58,153 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 09:20:58,153 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 09:20:58,154 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 09:20:58,154 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 09:20:58,154 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 09:20:58,154 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 09:20:58,154 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 09:20:58,155 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 09:20:58,155 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 09:20:58,155 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 09:20:58,157 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 09:20:58,157 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 09:20:58,158 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 09:20:58,158 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 09:20:58,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 09:20:58,158 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 09:20:58,158 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 09:20:58,159 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 09:20:58,159 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 09:20:58,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 09:20:58,162 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 09:20:58,162 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 09:20:58,163 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 09:20:58,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 09:20:58,463 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 09:20:58,466 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 09:20:58,468 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 09:20:58,468 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 09:20:58,469 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2020-10-14 09:20:58,533 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1340e394/f3772fe12df1495db49a1248194ac147/FLAGf6b2e7737 [2020-10-14 09:20:59,080 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 09:20:59,081 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2020-10-14 09:20:59,102 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1340e394/f3772fe12df1495db49a1248194ac147/FLAGf6b2e7737 [2020-10-14 09:20:59,306 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1340e394/f3772fe12df1495db49a1248194ac147 [2020-10-14 09:20:59,315 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 09:20:59,317 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 09:20:59,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 09:20:59,318 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 09:20:59,321 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 09:20:59,322 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:20:59" (1/1) ... [2020-10-14 09:20:59,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a9763dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:20:59, skipping insertion in model container [2020-10-14 09:20:59,325 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:20:59" (1/1) ... [2020-10-14 09:20:59,331 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 09:20:59,419 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 09:21:00,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:21:00,210 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 09:21:00,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 09:21:00,463 INFO L208 MainTranslator]: Completed translation [2020-10-14 09:21:00,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:00 WrapperNode [2020-10-14 09:21:00,464 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 09:21:00,465 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 09:21:00,465 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 09:21:00,465 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 09:21:00,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:00" (1/1) ... [2020-10-14 09:21:00,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:00" (1/1) ... [2020-10-14 09:21:00,515 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:00" (1/1) ... [2020-10-14 09:21:00,516 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:00" (1/1) ... [2020-10-14 09:21:00,549 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:00" (1/1) ... [2020-10-14 09:21:00,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:00" (1/1) ... [2020-10-14 09:21:00,584 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:00" (1/1) ... [2020-10-14 09:21:00,594 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 09:21:00,595 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 09:21:00,595 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 09:21:00,595 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 09:21:00,596 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:00" (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 [2020-10-14 09:21:00,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 09:21:00,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 09:21:00,706 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 09:21:00,706 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 09:21:00,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 09:21:00,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 09:21:00,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 09:21:00,707 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 09:21:00,707 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 09:21:00,707 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 09:21:00,708 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 09:21:00,708 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 09:21:00,708 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 09:21:00,708 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 09:21:00,708 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 09:21:00,709 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 09:21:00,709 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-14 09:21:00,709 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-14 09:21:00,709 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 09:21:00,709 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 09:21:00,710 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 09:21:00,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 09:21:00,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 09:21:02,144 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 09:21:02,144 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 09:21:02,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:21:02 BoogieIcfgContainer [2020-10-14 09:21:02,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 09:21:02,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 09:21:02,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 09:21:02,157 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 09:21:02,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:20:59" (1/3) ... [2020-10-14 09:21:02,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39161fc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:21:02, skipping insertion in model container [2020-10-14 09:21:02,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:21:00" (2/3) ... [2020-10-14 09:21:02,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39161fc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:21:02, skipping insertion in model container [2020-10-14 09:21:02,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:21:02" (3/3) ... [2020-10-14 09:21:02,161 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.2.ufo.BOUNDED-12.pals.c.p+lhb-reducer.c [2020-10-14 09:21:02,171 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 09:21:02,180 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 09:21:02,193 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 09:21:02,220 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 09:21:02,221 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 09:21:02,221 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 09:21:02,221 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 09:21:02,221 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 09:21:02,221 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 09:21:02,221 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 09:21:02,222 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 09:21:02,248 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states. [2020-10-14 09:21:02,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-14 09:21:02,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:21:02,272 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] [2020-10-14 09:21:02,272 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:21:02,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:21:02,279 INFO L82 PathProgramCache]: Analyzing trace with hash 2114966655, now seen corresponding path program 1 times [2020-10-14 09:21:02,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:21:02,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635064588] [2020-10-14 09:21:02,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:21:02,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:21:02,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:03,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:03,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:03,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:03,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:03,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:03,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:03,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:04,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:06,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:07,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:21:07,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 09:21:07,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:21:07,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-14 09:21:07,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:21:07,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:21:07,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:21:07,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-14 09:21:07,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 09:21:07,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 09:21:08,319 WARN L193 SmtUtils]: Spent 493.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 09:21:08,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:21:08,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:21:08,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:08,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:21:08,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:21:08,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:21:08,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 09:21:08,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:21:08,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:21:08,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:21:08,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:21:08,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:21:08,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:21:08,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:21:08,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635064588] [2020-10-14 09:21:08,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:21:08,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:21:08,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149433815] [2020-10-14 09:21:08,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:21:08,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:21:08,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:21:08,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:21:08,464 INFO L87 Difference]: Start difference. First operand 492 states. Second operand 4 states. [2020-10-14 09:21:08,864 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-14 09:21:11,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:21:11,616 INFO L93 Difference]: Finished difference Result 1197 states and 1936 transitions. [2020-10-14 09:21:11,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:21:11,618 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2020-10-14 09:21:11,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:21:11,641 INFO L225 Difference]: With dead ends: 1197 [2020-10-14 09:21:11,641 INFO L226 Difference]: Without dead ends: 881 [2020-10-14 09:21:11,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:21:11,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2020-10-14 09:21:11,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 846. [2020-10-14 09:21:11,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 846 states. [2020-10-14 09:21:11,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1364 transitions. [2020-10-14 09:21:11,772 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1364 transitions. Word has length 123 [2020-10-14 09:21:11,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:21:11,773 INFO L479 AbstractCegarLoop]: Abstraction has 846 states and 1364 transitions. [2020-10-14 09:21:11,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:21:11,773 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1364 transitions. [2020-10-14 09:21:11,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-14 09:21:11,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:21:11,787 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] [2020-10-14 09:21:11,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 09:21:11,788 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:21:11,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:21:11,792 INFO L82 PathProgramCache]: Analyzing trace with hash -956062393, now seen corresponding path program 1 times [2020-10-14 09:21:11,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:21:11,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83288025] [2020-10-14 09:21:11,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:21:11,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:21:11,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:11,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:12,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:12,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:12,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:12,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:12,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:12,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:14,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:15,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:16,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:21:16,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 09:21:16,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:21:16,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-14 09:21:16,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:21:16,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:21:16,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:21:16,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-14 09:21:16,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 09:21:16,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:21:17,167 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 09:21:17,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:21:17,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:21:17,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:17,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:21:17,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:21:17,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:21:17,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 09:21:17,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:21:17,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:21:17,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:21:17,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:21:17,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:21:17,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:21:17,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:21:17,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83288025] [2020-10-14 09:21:17,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:21:17,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:21:17,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267656639] [2020-10-14 09:21:17,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:21:17,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:21:17,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:21:17,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:21:17,242 INFO L87 Difference]: Start difference. First operand 846 states and 1364 transitions. Second operand 4 states. [2020-10-14 09:21:17,494 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-14 09:21:19,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:21:19,813 INFO L93 Difference]: Finished difference Result 2084 states and 3337 transitions. [2020-10-14 09:21:19,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:21:19,814 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2020-10-14 09:21:19,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:21:19,826 INFO L225 Difference]: With dead ends: 2084 [2020-10-14 09:21:19,826 INFO L226 Difference]: Without dead ends: 1546 [2020-10-14 09:21:19,845 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 [2020-10-14 09:21:19,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1546 states. [2020-10-14 09:21:19,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1546 to 1478. [2020-10-14 09:21:19,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1478 states. [2020-10-14 09:21:19,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 2367 transitions. [2020-10-14 09:21:19,967 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 2367 transitions. Word has length 125 [2020-10-14 09:21:19,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:21:19,970 INFO L479 AbstractCegarLoop]: Abstraction has 1478 states and 2367 transitions. [2020-10-14 09:21:19,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:21:19,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 2367 transitions. [2020-10-14 09:21:19,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-14 09:21:19,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:21:19,979 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] [2020-10-14 09:21:19,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 09:21:19,980 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:21:19,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:21:19,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1159335727, now seen corresponding path program 1 times [2020-10-14 09:21:19,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:21:19,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012756390] [2020-10-14 09:21:19,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:21:20,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:21:20,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:20,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:20,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:20,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:20,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:20,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:20,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:21,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:23,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:23,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:25,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:21:25,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 09:21:25,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 09:21:25,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 09:21:25,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:21:25,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:21:25,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:21:25,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-14 09:21:25,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 09:21:25,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:21:25,421 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 09:21:25,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:21:25,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:21:25,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:25,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:21:25,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:21:25,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:21:25,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 09:21:25,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:21:25,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:21:25,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:21:25,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:21:25,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:21:25,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 09:21:25,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:21:25,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012756390] [2020-10-14 09:21:25,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:21:25,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:21:25,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892783645] [2020-10-14 09:21:25,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:21:25,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:21:25,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:21:25,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:21:25,554 INFO L87 Difference]: Start difference. First operand 1478 states and 2367 transitions. Second operand 4 states. [2020-10-14 09:21:25,903 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-14 09:21:28,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:21:28,355 INFO L93 Difference]: Finished difference Result 3502 states and 5577 transitions. [2020-10-14 09:21:28,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:21:28,356 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-10-14 09:21:28,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:21:28,373 INFO L225 Difference]: With dead ends: 3502 [2020-10-14 09:21:28,373 INFO L226 Difference]: Without dead ends: 2636 [2020-10-14 09:21:28,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:21:28,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2636 states. [2020-10-14 09:21:28,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2636 to 2502. [2020-10-14 09:21:28,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2502 states. [2020-10-14 09:21:28,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2502 states to 2502 states and 3979 transitions. [2020-10-14 09:21:28,585 INFO L78 Accepts]: Start accepts. Automaton has 2502 states and 3979 transitions. Word has length 127 [2020-10-14 09:21:28,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:21:28,586 INFO L479 AbstractCegarLoop]: Abstraction has 2502 states and 3979 transitions. [2020-10-14 09:21:28,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:21:28,586 INFO L276 IsEmpty]: Start isEmpty. Operand 2502 states and 3979 transitions. [2020-10-14 09:21:28,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-14 09:21:28,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:21:28,595 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] [2020-10-14 09:21:28,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 09:21:28,596 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:21:28,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:21:28,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1567958055, now seen corresponding path program 1 times [2020-10-14 09:21:28,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:21:28,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149331177] [2020-10-14 09:21:28,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:21:28,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:21:28,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:28,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:28,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:28,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:28,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:29,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:29,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:31,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:33,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:21:33,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 09:21:33,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:21:33,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 09:21:33,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:21:33,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:21:33,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:21:33,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-14 09:21:33,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 09:21:33,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:21:33,969 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 09:21:33,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:21:33,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:21:33,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:33,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:21:33,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:21:33,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:21:33,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 09:21:33,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:21:33,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:21:33,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:21:33,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:21:33,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:21:33,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:21:34,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:21:34,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149331177] [2020-10-14 09:21:34,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:21:34,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:21:34,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212828134] [2020-10-14 09:21:34,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:21:34,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:21:34,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:21:34,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:21:34,041 INFO L87 Difference]: Start difference. First operand 2502 states and 3979 transitions. Second operand 4 states. [2020-10-14 09:21:34,375 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-14 09:21:36,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:21:36,588 INFO L93 Difference]: Finished difference Result 5938 states and 9393 transitions. [2020-10-14 09:21:36,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:21:36,589 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2020-10-14 09:21:36,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:21:36,614 INFO L225 Difference]: With dead ends: 5938 [2020-10-14 09:21:36,615 INFO L226 Difference]: Without dead ends: 4480 [2020-10-14 09:21:36,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:21:36,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4480 states. [2020-10-14 09:21:36,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4480 to 4214. [2020-10-14 09:21:36,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4214 states. [2020-10-14 09:21:36,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4214 states to 4214 states and 6647 transitions. [2020-10-14 09:21:36,880 INFO L78 Accepts]: Start accepts. Automaton has 4214 states and 6647 transitions. Word has length 129 [2020-10-14 09:21:36,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:21:36,880 INFO L479 AbstractCegarLoop]: Abstraction has 4214 states and 6647 transitions. [2020-10-14 09:21:36,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:21:36,881 INFO L276 IsEmpty]: Start isEmpty. Operand 4214 states and 6647 transitions. [2020-10-14 09:21:36,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-14 09:21:36,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:21:36,894 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] [2020-10-14 09:21:36,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 09:21:36,895 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:21:36,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:21:36,896 INFO L82 PathProgramCache]: Analyzing trace with hash 528871783, now seen corresponding path program 1 times [2020-10-14 09:21:36,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:21:36,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444420325] [2020-10-14 09:21:36,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:21:36,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:21:36,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:36,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:37,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:37,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:37,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:37,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:38,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:41,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:21:41,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 09:21:41,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:21:41,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 09:21:41,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:21:41,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:21:41,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:21:41,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 09:21:41,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 09:21:41,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:21:42,175 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 09:21:42,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:21:42,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:21:42,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:42,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:21:42,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:21:42,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:21:42,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:21:42,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:21:42,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:21:42,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:21:42,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:21:42,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:21:42,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:21:42,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:21:42,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444420325] [2020-10-14 09:21:42,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:21:42,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:21:42,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692215924] [2020-10-14 09:21:42,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:21:42,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:21:42,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:21:42,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:21:42,224 INFO L87 Difference]: Start difference. First operand 4214 states and 6647 transitions. Second operand 4 states. [2020-10-14 09:21:45,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:21:45,297 INFO L93 Difference]: Finished difference Result 11680 states and 18400 transitions. [2020-10-14 09:21:45,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 09:21:45,298 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-10-14 09:21:45,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:21:45,336 INFO L225 Difference]: With dead ends: 11680 [2020-10-14 09:21:45,336 INFO L226 Difference]: Without dead ends: 8078 [2020-10-14 09:21:45,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:21:45,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8078 states. [2020-10-14 09:21:45,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8078 to 7836. [2020-10-14 09:21:45,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7836 states. [2020-10-14 09:21:45,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7836 states to 7836 states and 12270 transitions. [2020-10-14 09:21:45,719 INFO L78 Accepts]: Start accepts. Automaton has 7836 states and 12270 transitions. Word has length 131 [2020-10-14 09:21:45,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:21:45,719 INFO L479 AbstractCegarLoop]: Abstraction has 7836 states and 12270 transitions. [2020-10-14 09:21:45,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:21:45,719 INFO L276 IsEmpty]: Start isEmpty. Operand 7836 states and 12270 transitions. [2020-10-14 09:21:45,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-14 09:21:45,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:21:45,741 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] [2020-10-14 09:21:45,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 09:21:45,742 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:21:45,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:21:45,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1364833740, now seen corresponding path program 1 times [2020-10-14 09:21:45,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:21:45,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556193705] [2020-10-14 09:21:45,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:21:45,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:21:45,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:45,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:45,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:45,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:46,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:46,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:47,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:50,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:21:50,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 09:21:50,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 09:21:50,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-14 09:21:50,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:21:50,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:21:50,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:21:50,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 09:21:50,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 09:21:50,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:21:51,072 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 09:21:51,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:21:51,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:21:51,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:51,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:21:51,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:21:51,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:21:51,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 09:21:51,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:21:51,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:21:51,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:21:51,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:21:51,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:21:51,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 09:21:51,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:21:51,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1556193705] [2020-10-14 09:21:51,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:21:51,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:21:51,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944671277] [2020-10-14 09:21:51,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:21:51,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:21:51,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:21:51,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:21:51,135 INFO L87 Difference]: Start difference. First operand 7836 states and 12270 transitions. Second operand 4 states. [2020-10-14 09:21:51,373 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-14 09:21:53,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:21:53,857 INFO L93 Difference]: Finished difference Result 20480 states and 31928 transitions. [2020-10-14 09:21:53,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:21:53,858 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-10-14 09:21:53,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:21:53,915 INFO L225 Difference]: With dead ends: 20480 [2020-10-14 09:21:53,915 INFO L226 Difference]: Without dead ends: 14878 [2020-10-14 09:21:53,930 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 [2020-10-14 09:21:53,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14878 states. [2020-10-14 09:21:54,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14878 to 13820. [2020-10-14 09:21:54,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13820 states. [2020-10-14 09:21:54,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13820 states to 13820 states and 21430 transitions. [2020-10-14 09:21:54,575 INFO L78 Accepts]: Start accepts. Automaton has 13820 states and 21430 transitions. Word has length 131 [2020-10-14 09:21:54,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:21:54,576 INFO L479 AbstractCegarLoop]: Abstraction has 13820 states and 21430 transitions. [2020-10-14 09:21:54,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:21:54,576 INFO L276 IsEmpty]: Start isEmpty. Operand 13820 states and 21430 transitions. [2020-10-14 09:21:54,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-14 09:21:54,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:21:54,609 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] [2020-10-14 09:21:54,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 09:21:54,610 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:21:54,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:21:54,610 INFO L82 PathProgramCache]: Analyzing trace with hash -968179142, now seen corresponding path program 1 times [2020-10-14 09:21:54,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:21:54,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154411341] [2020-10-14 09:21:54,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:21:54,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:21:54,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:54,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:54,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:54,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:55,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:59,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:21:59,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-14 09:21:59,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 09:21:59,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 09:21:59,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:21:59,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:21:59,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:21:59,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-14 09:21:59,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 09:21:59,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:21:59,900 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 09:21:59,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:21:59,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:21:59,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:21:59,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:21:59,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:21:59,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:21:59,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:21:59,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:21:59,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:21:59,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:21:59,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:21:59,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:21:59,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:22:00,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:22:00,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1154411341] [2020-10-14 09:22:00,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:22:00,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:22:00,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041906736] [2020-10-14 09:22:00,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:22:00,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:22:00,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:22:00,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:22:00,019 INFO L87 Difference]: Start difference. First operand 13820 states and 21430 transitions. Second operand 4 states. [2020-10-14 09:22:00,277 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-14 09:22:03,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:22:03,804 INFO L93 Difference]: Finished difference Result 23904 states and 37096 transitions. [2020-10-14 09:22:03,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:22:03,804 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2020-10-14 09:22:03,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:22:03,840 INFO L225 Difference]: With dead ends: 23904 [2020-10-14 09:22:03,841 INFO L226 Difference]: Without dead ends: 13822 [2020-10-14 09:22:03,862 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 [2020-10-14 09:22:03,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13822 states. [2020-10-14 09:22:04,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13822 to 13820. [2020-10-14 09:22:04,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13820 states. [2020-10-14 09:22:04,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13820 states to 13820 states and 21334 transitions. [2020-10-14 09:22:04,581 INFO L78 Accepts]: Start accepts. Automaton has 13820 states and 21334 transitions. Word has length 133 [2020-10-14 09:22:04,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:22:04,581 INFO L479 AbstractCegarLoop]: Abstraction has 13820 states and 21334 transitions. [2020-10-14 09:22:04,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:22:04,582 INFO L276 IsEmpty]: Start isEmpty. Operand 13820 states and 21334 transitions. [2020-10-14 09:22:04,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-14 09:22:04,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:22:04,612 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] [2020-10-14 09:22:04,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 09:22:04,612 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:22:04,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:22:04,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1579851602, now seen corresponding path program 1 times [2020-10-14 09:22:04,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:22:04,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1878555408] [2020-10-14 09:22:04,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:22:04,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:04,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:04,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:04,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:04,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:09,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:09,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-14 09:22:09,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 09:22:09,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 09:22:09,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:09,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:09,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:22:09,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 09:22:09,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 09:22:09,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:22:09,884 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 09:22:09,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:22:09,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:09,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:09,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:09,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:22:09,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:22:09,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 09:22:09,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:09,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:09,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:22:09,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:22:09,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:22:09,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:22:09,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:22:09,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1878555408] [2020-10-14 09:22:09,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:22:09,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:22:09,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899309452] [2020-10-14 09:22:09,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:22:09,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:22:09,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:22:09,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:22:09,926 INFO L87 Difference]: Start difference. First operand 13820 states and 21334 transitions. Second operand 5 states. [2020-10-14 09:22:12,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:22:12,758 INFO L93 Difference]: Finished difference Result 27593 states and 42580 transitions. [2020-10-14 09:22:12,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 09:22:12,759 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-10-14 09:22:12,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:22:12,790 INFO L225 Difference]: With dead ends: 27593 [2020-10-14 09:22:12,790 INFO L226 Difference]: Without dead ends: 13820 [2020-10-14 09:22:12,817 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 [2020-10-14 09:22:12,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13820 states. [2020-10-14 09:22:13,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13820 to 13820. [2020-10-14 09:22:13,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13820 states. [2020-10-14 09:22:13,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13820 states to 13820 states and 21293 transitions. [2020-10-14 09:22:13,453 INFO L78 Accepts]: Start accepts. Automaton has 13820 states and 21293 transitions. Word has length 133 [2020-10-14 09:22:13,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:22:13,453 INFO L479 AbstractCegarLoop]: Abstraction has 13820 states and 21293 transitions. [2020-10-14 09:22:13,453 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:22:13,453 INFO L276 IsEmpty]: Start isEmpty. Operand 13820 states and 21293 transitions. [2020-10-14 09:22:13,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-14 09:22:13,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:22:13,476 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:22:13,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 09:22:13,477 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:22:13,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:22:13,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1976771462, now seen corresponding path program 1 times [2020-10-14 09:22:13,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:22:13,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115531408] [2020-10-14 09:22:13,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:22:13,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:13,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:13,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:13,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:13,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:13,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:13,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:16,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:16,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:18,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:18,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-14 09:22:18,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 09:22:18,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 09:22:18,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:18,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:18,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 09:22:18,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 09:22:18,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 09:22:18,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:22:18,772 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 09:22:18,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:22:18,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:18,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:18,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:18,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:22:18,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:22:18,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:22:18,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:18,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:18,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:22:18,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:22:18,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:22:18,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:22:18,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:22:18,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1115531408] [2020-10-14 09:22:18,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:22:18,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 09:22:18,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381457854] [2020-10-14 09:22:18,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 09:22:18,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:22:18,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 09:22:18,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:22:18,808 INFO L87 Difference]: Start difference. First operand 13820 states and 21293 transitions. Second operand 5 states. [2020-10-14 09:22:21,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:22:21,271 INFO L93 Difference]: Finished difference Result 26206 states and 40270 transitions. [2020-10-14 09:22:21,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:22:21,272 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-10-14 09:22:21,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:22:21,301 INFO L225 Difference]: With dead ends: 26206 [2020-10-14 09:22:21,301 INFO L226 Difference]: Without dead ends: 13820 [2020-10-14 09:22:21,325 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 [2020-10-14 09:22:21,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13820 states. [2020-10-14 09:22:21,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13820 to 13820. [2020-10-14 09:22:21,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13820 states. [2020-10-14 09:22:21,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13820 states to 13820 states and 21165 transitions. [2020-10-14 09:22:21,870 INFO L78 Accepts]: Start accepts. Automaton has 13820 states and 21165 transitions. Word has length 173 [2020-10-14 09:22:21,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:22:21,871 INFO L479 AbstractCegarLoop]: Abstraction has 13820 states and 21165 transitions. [2020-10-14 09:22:21,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 09:22:21,871 INFO L276 IsEmpty]: Start isEmpty. Operand 13820 states and 21165 transitions. [2020-10-14 09:22:21,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-14 09:22:21,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:22:21,890 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:22:21,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 09:22:21,891 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:22:21,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:22:21,891 INFO L82 PathProgramCache]: Analyzing trace with hash -849669267, now seen corresponding path program 1 times [2020-10-14 09:22:21,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:22:21,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1975633568] [2020-10-14 09:22:21,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:22:21,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:21,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:21,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:22,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:22,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:22,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:22,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:22,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:22,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:23,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:23,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:23,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:23,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:24,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:24,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:24,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:24,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:24,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:24,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:25,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:25,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:25,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:25,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:25,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:25,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:25,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:25,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:25,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:25,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:26,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:26,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:26,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:26,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:26,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:26,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-14 09:22:26,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 32 [2020-10-14 09:22:26,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 09:22:26,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:26,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:26,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:22:26,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 09:22:26,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 09:22:26,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:22:27,234 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 09:22:27,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:22:27,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:27,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:27,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:27,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:22:27,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:22:27,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 09:22:27,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:27,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:27,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:22:27,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:22:27,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:22:27,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 09:22:27,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:22:27,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1975633568] [2020-10-14 09:22:27,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:22:27,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:22:27,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968315578] [2020-10-14 09:22:27,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:22:27,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:22:27,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:22:27,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:22:27,337 INFO L87 Difference]: Start difference. First operand 13820 states and 21165 transitions. Second operand 4 states. [2020-10-14 09:22:27,625 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-14 09:22:30,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:22:30,494 INFO L93 Difference]: Finished difference Result 32969 states and 50366 transitions. [2020-10-14 09:22:30,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:22:30,495 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 174 [2020-10-14 09:22:30,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:22:30,532 INFO L225 Difference]: With dead ends: 32969 [2020-10-14 09:22:30,532 INFO L226 Difference]: Without dead ends: 24647 [2020-10-14 09:22:30,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:22:30,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24647 states. [2020-10-14 09:22:31,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24647 to 24645. [2020-10-14 09:22:31,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24645 states. [2020-10-14 09:22:31,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24645 states to 24645 states and 37436 transitions. [2020-10-14 09:22:31,472 INFO L78 Accepts]: Start accepts. Automaton has 24645 states and 37436 transitions. Word has length 174 [2020-10-14 09:22:31,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:22:31,472 INFO L479 AbstractCegarLoop]: Abstraction has 24645 states and 37436 transitions. [2020-10-14 09:22:31,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:22:31,472 INFO L276 IsEmpty]: Start isEmpty. Operand 24645 states and 37436 transitions. [2020-10-14 09:22:31,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-14 09:22:31,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:22:31,505 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:22:31,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 09:22:31,505 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:22:31,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:22:31,505 INFO L82 PathProgramCache]: Analyzing trace with hash 532595678, now seen corresponding path program 1 times [2020-10-14 09:22:31,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:22:31,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [467907709] [2020-10-14 09:22:31,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:22:31,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:31,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:31,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:31,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:31,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:31,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:32,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:33,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:33,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:34,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:34,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:34,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:34,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:34,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:34,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:35,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:35,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:35,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:35,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:35,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:35,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:35,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:36,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:36,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:36,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:36,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:36,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:37,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:37,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-14 09:22:37,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 26 [2020-10-14 09:22:37,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5644 [2020-10-14 09:22:37,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:37,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:37,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:22:37,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-14 09:22:37,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 09:22:37,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:22:37,412 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 09:22:37,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:22:37,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:37,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:37,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:37,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:22:37,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:22:37,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:22:37,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:37,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:37,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:22:37,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:22:37,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:22:37,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:22:37,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:22:37,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [467907709] [2020-10-14 09:22:37,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:22:37,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:22:37,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276610] [2020-10-14 09:22:37,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:22:37,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:22:37,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:22:37,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:22:37,454 INFO L87 Difference]: Start difference. First operand 24645 states and 37436 transitions. Second operand 4 states. [2020-10-14 09:22:37,684 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-14 09:22:41,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:22:41,266 INFO L93 Difference]: Finished difference Result 70496 states and 107025 transitions. [2020-10-14 09:22:41,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:22:41,266 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2020-10-14 09:22:41,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:22:41,342 INFO L225 Difference]: With dead ends: 70496 [2020-10-14 09:22:41,342 INFO L226 Difference]: Without dead ends: 47637 [2020-10-14 09:22:41,387 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 [2020-10-14 09:22:41,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47637 states. [2020-10-14 09:22:43,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47637 to 47635. [2020-10-14 09:22:43,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47635 states. [2020-10-14 09:22:43,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47635 states to 47635 states and 71906 transitions. [2020-10-14 09:22:43,300 INFO L78 Accepts]: Start accepts. Automaton has 47635 states and 71906 transitions. Word has length 177 [2020-10-14 09:22:43,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:22:43,300 INFO L479 AbstractCegarLoop]: Abstraction has 47635 states and 71906 transitions. [2020-10-14 09:22:43,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:22:43,301 INFO L276 IsEmpty]: Start isEmpty. Operand 47635 states and 71906 transitions. [2020-10-14 09:22:43,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-14 09:22:43,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:22:43,367 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:22:43,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 09:22:43,368 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:22:43,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:22:43,368 INFO L82 PathProgramCache]: Analyzing trace with hash -500737749, now seen corresponding path program 1 times [2020-10-14 09:22:43,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:22:43,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932184182] [2020-10-14 09:22:43,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:22:43,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:43,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:43,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:43,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:43,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:43,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:43,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:44,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:44,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:45,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:45,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:45,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:45,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:45,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:45,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:45,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:45,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:45,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:45,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:46,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:46,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:46,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:46,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:46,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:46,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:46,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:46,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:46,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:47,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:47,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:47,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:47,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:47,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:47,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:47,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:47,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:47,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:47,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:47,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:47,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:47,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:47,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:47,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:47,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:48,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:48,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:48,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:48,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:48,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:48,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:48,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:48,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:48,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-14 09:22:48,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 50 [2020-10-14 09:22:48,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-14 09:22:48,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:48,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:48,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:22:48,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-14 09:22:48,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 09:22:48,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:22:48,649 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 09:22:48,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:22:48,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:22:48,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:22:48,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:22:48,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:22:48,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:22:48,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:22:48,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:22:48,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:22:48,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:22:48,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:22:48,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:22:48,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:22:48,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:22:48,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932184182] [2020-10-14 09:22:48,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:22:48,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:22:48,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534835287] [2020-10-14 09:22:48,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:22:48,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:22:48,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:22:48,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:22:48,689 INFO L87 Difference]: Start difference. First operand 47635 states and 71906 transitions. Second operand 4 states. [2020-10-14 09:22:48,939 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-14 09:22:54,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:22:54,321 INFO L93 Difference]: Finished difference Result 133320 states and 200906 transitions. [2020-10-14 09:22:54,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:22:54,322 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2020-10-14 09:22:54,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:22:54,438 INFO L225 Difference]: With dead ends: 133320 [2020-10-14 09:22:54,439 INFO L226 Difference]: Without dead ends: 90509 [2020-10-14 09:22:54,496 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 [2020-10-14 09:22:54,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90509 states. [2020-10-14 09:23:00,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90509 to 90507. [2020-10-14 09:23:00,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90507 states. [2020-10-14 09:23:00,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90507 states to 90507 states and 135469 transitions. [2020-10-14 09:23:00,642 INFO L78 Accepts]: Start accepts. Automaton has 90507 states and 135469 transitions. Word has length 177 [2020-10-14 09:23:00,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:23:00,642 INFO L479 AbstractCegarLoop]: Abstraction has 90507 states and 135469 transitions. [2020-10-14 09:23:00,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:23:00,643 INFO L276 IsEmpty]: Start isEmpty. Operand 90507 states and 135469 transitions. [2020-10-14 09:23:00,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-14 09:23:00,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:23:00,723 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:23:00,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 09:23:00,723 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:23:00,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:23:00,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1938665182, now seen corresponding path program 1 times [2020-10-14 09:23:00,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:23:00,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898447868] [2020-10-14 09:23:00,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:23:00,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:23:00,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:00,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:00,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:00,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:00,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:01,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:01,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:01,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:02,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:02,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:02,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:02,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:02,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:02,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:02,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:02,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:02,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:02,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:03,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:03,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:03,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:03,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:04,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:04,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:04,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:04,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:04,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:04,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:04,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:04,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:04,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:04,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:04,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:05,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:05,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:05,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:05,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:05,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:05,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:23:05,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-14 09:23:05,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 38 [2020-10-14 09:23:05,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 09:23:05,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:23:05,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:23:05,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:23:05,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-14 09:23:05,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 09:23:05,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:23:05,979 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 09:23:05,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:23:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:23:05,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:05,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:23:05,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:23:05,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:23:05,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 09:23:05,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:23:05,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:23:05,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:23:05,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:23:05,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:23:05,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:23:06,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:23:06,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898447868] [2020-10-14 09:23:06,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:23:06,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:23:06,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446292880] [2020-10-14 09:23:06,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:23:06,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:23:06,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:23:06,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:23:06,017 INFO L87 Difference]: Start difference. First operand 90507 states and 135469 transitions. Second operand 4 states. [2020-10-14 09:23:06,238 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-14 09:23:15,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:23:15,055 INFO L93 Difference]: Finished difference Result 249920 states and 373190 transitions. [2020-10-14 09:23:15,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:23:15,056 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2020-10-14 09:23:15,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:23:15,236 INFO L225 Difference]: With dead ends: 249920 [2020-10-14 09:23:15,236 INFO L226 Difference]: Without dead ends: 171589 [2020-10-14 09:23:15,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 09:23:15,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171589 states. [2020-10-14 09:23:25,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171589 to 171587. [2020-10-14 09:23:25,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171587 states. [2020-10-14 09:23:25,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171587 states to 171587 states and 254294 transitions. [2020-10-14 09:23:25,402 INFO L78 Accepts]: Start accepts. Automaton has 171587 states and 254294 transitions. Word has length 177 [2020-10-14 09:23:25,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:23:25,402 INFO L479 AbstractCegarLoop]: Abstraction has 171587 states and 254294 transitions. [2020-10-14 09:23:25,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:23:25,403 INFO L276 IsEmpty]: Start isEmpty. Operand 171587 states and 254294 transitions. [2020-10-14 09:23:25,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-14 09:23:25,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:23:25,586 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:23:25,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 09:23:25,586 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:23:25,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:23:25,587 INFO L82 PathProgramCache]: Analyzing trace with hash 809776579, now seen corresponding path program 1 times [2020-10-14 09:23:25,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:23:25,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285780848] [2020-10-14 09:23:25,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:23:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:23:25,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:25,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:25,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:25,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:26,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:26,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:26,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:26,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:26,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:26,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:26,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:26,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:26,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:26,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:27,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:27,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:27,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:27,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:27,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:27,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:27,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:27,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:30,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:23:30,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-14 09:23:30,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-14 09:23:30,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 09:23:30,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:23:30,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:23:30,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:23:30,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-14 09:23:30,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 09:23:30,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:23:30,855 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 09:23:30,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:23:30,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:23:30,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:23:30,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:23:30,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:23:30,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:23:30,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 09:23:30,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:23:30,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:23:30,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:23:30,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:23:30,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:23:30,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:23:30,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:23:30,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285780848] [2020-10-14 09:23:30,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:23:30,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:23:30,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863055546] [2020-10-14 09:23:30,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:23:30,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:23:30,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:23:30,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:23:30,913 INFO L87 Difference]: Start difference. First operand 171587 states and 254294 transitions. Second operand 4 states. [2020-10-14 09:23:31,147 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-14 09:23:46,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 09:23:46,845 INFO L93 Difference]: Finished difference Result 465828 states and 688034 transitions. [2020-10-14 09:23:46,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 09:23:46,846 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2020-10-14 09:23:46,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 09:23:47,517 INFO L225 Difference]: With dead ends: 465828 [2020-10-14 09:23:47,518 INFO L226 Difference]: Without dead ends: 324033 [2020-10-14 09:23:47,646 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 [2020-10-14 09:23:47,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324033 states. [2020-10-14 09:24:11,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324033 to 324031. [2020-10-14 09:24:11,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324031 states. [2020-10-14 09:24:11,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324031 states to 324031 states and 474669 transitions. [2020-10-14 09:24:11,578 INFO L78 Accepts]: Start accepts. Automaton has 324031 states and 474669 transitions. Word has length 177 [2020-10-14 09:24:11,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 09:24:11,578 INFO L479 AbstractCegarLoop]: Abstraction has 324031 states and 474669 transitions. [2020-10-14 09:24:11,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 09:24:11,578 INFO L276 IsEmpty]: Start isEmpty. Operand 324031 states and 474669 transitions. [2020-10-14 09:24:12,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-14 09:24:12,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 09:24:12,009 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 09:24:12,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 09:24:12,009 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 09:24:12,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 09:24:12,010 INFO L82 PathProgramCache]: Analyzing trace with hash 154210574, now seen corresponding path program 1 times [2020-10-14 09:24:12,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 09:24:12,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949903547] [2020-10-14 09:24:12,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 09:24:12,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:24:12,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:24:12,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:24:12,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:24:12,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:24:12,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:24:12,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:24:12,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:24:12,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:24:13,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:24:13,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:24:14,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:24:14,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:24:16,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:24:16,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:24:17,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:24:17,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:24:17,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-14 09:24:17,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-14 09:24:17,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 09:24:17,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:24:17,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:24:17,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 09:24:17,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-14 09:24:17,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 09:24:17,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:24:17,276 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-14 09:24:17,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 09:24:17,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 09:24:17,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 09:24:17,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 09:24:17,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 09:24:17,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 09:24:17,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 09:24:17,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 09:24:17,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 09:24:17,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 09:24:17,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 09:24:17,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 09:24:17,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 09:24:17,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 09:24:17,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1949903547] [2020-10-14 09:24:17,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 09:24:17,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 09:24:17,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565927436] [2020-10-14 09:24:17,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 09:24:17,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 09:24:17,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 09:24:17,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 09:24:17,322 INFO L87 Difference]: Start difference. First operand 324031 states and 474669 transitions. Second operand 4 states.