/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 15:04:21,189 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 15:04:21,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 15:04:21,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 15:04:21,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 15:04:21,242 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 15:04:21,244 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 15:04:21,248 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 15:04:21,251 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 15:04:21,255 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 15:04:21,256 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 15:04:21,257 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 15:04:21,257 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 15:04:21,260 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 15:04:21,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 15:04:21,264 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 15:04:21,265 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 15:04:21,266 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 15:04:21,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 15:04:21,275 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 15:04:21,278 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 15:04:21,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 15:04:21,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 15:04:21,280 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 15:04:21,293 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 15:04:21,297 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 15:04:21,297 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 15:04:21,298 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 15:04:21,299 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 15:04:21,300 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 15:04:21,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 15:04:21,301 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 15:04:21,307 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 15:04:21,308 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 15:04:21,309 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 15:04:21,310 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 15:04:21,312 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 15:04:21,312 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 15:04:21,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 15:04:21,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 15:04:21,314 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 15:04:21,316 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 15:04:21,343 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 15:04:21,344 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 15:04:21,345 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 15:04:21,345 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 15:04:21,345 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 15:04:21,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 15:04:21,346 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 15:04:21,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 15:04:21,346 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 15:04:21,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 15:04:21,347 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 15:04:21,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 15:04:21,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 15:04:21,347 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 15:04:21,347 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 15:04:21,348 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 15:04:21,348 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 15:04:21,348 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 15:04:21,348 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 15:04:21,348 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 15:04:21,349 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 15:04:21,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 15:04:21,349 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 15:04:21,349 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 15:04:21,349 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 15:04:21,350 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 15:04:21,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 15:04:21,350 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 15:04:21,350 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 15:04:21,350 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 15:04:21,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 15:04:21,683 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 15:04:21,687 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 15:04:21,689 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 15:04:21,690 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 15:04:21,691 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-13 15:04:21,770 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd48ec2f7/2ce359dedd964e778d8d43602a693e80/FLAGb82b241f9 [2020-10-13 15:04:22,491 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 15:04:22,492 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-13 15:04:22,530 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd48ec2f7/2ce359dedd964e778d8d43602a693e80/FLAGb82b241f9 [2020-10-13 15:04:22,589 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd48ec2f7/2ce359dedd964e778d8d43602a693e80 [2020-10-13 15:04:22,597 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 15:04:22,599 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 15:04:22,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 15:04:22,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 15:04:22,606 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 15:04:22,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:04:22" (1/1) ... [2020-10-13 15:04:22,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2876d654 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:04:22, skipping insertion in model container [2020-10-13 15:04:22,611 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 03:04:22" (1/1) ... [2020-10-13 15:04:22,620 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 15:04:22,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 15:04:24,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:04:24,293 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 15:04:25,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 15:04:25,332 INFO L208 MainTranslator]: Completed translation [2020-10-13 15:04:25,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:04:25 WrapperNode [2020-10-13 15:04:25,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 15:04:25,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 15:04:25,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 15:04:25,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 15:04:25,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:04:25" (1/1) ... [2020-10-13 15:04:25,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:04:25" (1/1) ... [2020-10-13 15:04:25,422 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:04:25" (1/1) ... [2020-10-13 15:04:25,422 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:04:25" (1/1) ... [2020-10-13 15:04:25,494 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:04:25" (1/1) ... [2020-10-13 15:04:25,534 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:04:25" (1/1) ... [2020-10-13 15:04:25,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:04:25" (1/1) ... [2020-10-13 15:04:25,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 15:04:25,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 15:04:25,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 15:04:25,574 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 15:04:25,577 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:04:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 15:04:25,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 15:04:25,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 15:04:25,661 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 15:04:25,662 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 15:04:25,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 15:04:25,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 15:04:25,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-13 15:04:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 15:04:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 15:04:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 15:04:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 15:04:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 15:04:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 15:04:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 15:04:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 15:04:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 15:04:25,666 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 15:04:25,666 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 15:04:25,666 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 15:04:25,667 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 15:04:25,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 15:04:25,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 15:04:28,767 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 15:04:28,767 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 15:04:28,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:04:28 BoogieIcfgContainer [2020-10-13 15:04:28,778 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 15:04:28,780 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 15:04:28,780 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 15:04:28,783 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 15:04:28,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 03:04:22" (1/3) ... [2020-10-13 15:04:28,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a9a35a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:04:28, skipping insertion in model container [2020-10-13 15:04:28,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 03:04:25" (2/3) ... [2020-10-13 15:04:28,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a9a35a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 03:04:28, skipping insertion in model container [2020-10-13 15:04:28,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 03:04:28" (3/3) ... [2020-10-13 15:04:28,787 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-13 15:04:28,799 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 15:04:28,808 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-10-13 15:04:28,822 INFO L251 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-10-13 15:04:28,852 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 15:04:28,852 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 15:04:28,852 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 15:04:28,852 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 15:04:28,852 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 15:04:28,852 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 15:04:28,853 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 15:04:28,853 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 15:04:28,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states. [2020-10-13 15:04:28,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-10-13 15:04:28,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:04:28,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:04:28,924 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:04:28,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:04:28,931 INFO L82 PathProgramCache]: Analyzing trace with hash -179235525, now seen corresponding path program 1 times [2020-10-13 15:04:28,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:04:28,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409824490] [2020-10-13 15:04:28,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:04:29,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:04:30,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:30,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:31,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:31,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:32,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:32,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:32,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:32,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:32,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:33,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:33,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:33,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:33,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:34,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:34,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:04:34,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-13 15:04:34,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 15:04:34,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-10-13 15:04:34,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:04:34,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:04:34,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:04:34,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-13 15:04:34,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 15:04:35,992 WARN L193 SmtUtils]: Spent 766.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-13 15:04:35,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:04:36,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:04:36,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:36,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:04:36,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:04:36,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:04:36,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-13 15:04:36,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:04:36,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:04:36,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:04:36,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:04:36,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:04:36,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:04:36,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [409824490] [2020-10-13 15:04:36,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:04:36,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:04:36,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025091923] [2020-10-13 15:04:36,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:04:36,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:04:36,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:04:36,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:04:36,317 INFO L87 Difference]: Start difference. First operand 1016 states. Second operand 5 states. [2020-10-13 15:04:49,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:04:49,096 INFO L93 Difference]: Finished difference Result 2959 states and 5297 transitions. [2020-10-13 15:04:49,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 15:04:49,103 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 324 [2020-10-13 15:04:49,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:04:49,133 INFO L225 Difference]: With dead ends: 2959 [2020-10-13 15:04:49,133 INFO L226 Difference]: Without dead ends: 1986 [2020-10-13 15:04:49,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:04:49,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1986 states. [2020-10-13 15:04:49,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1986 to 1885. [2020-10-13 15:04:49,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1885 states. [2020-10-13 15:04:49,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 2879 transitions. [2020-10-13 15:04:49,351 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 2879 transitions. Word has length 324 [2020-10-13 15:04:49,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:04:49,352 INFO L479 AbstractCegarLoop]: Abstraction has 1885 states and 2879 transitions. [2020-10-13 15:04:49,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:04:49,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 2879 transitions. [2020-10-13 15:04:49,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-13 15:04:49,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:04:49,362 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:04:49,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 15:04:49,363 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:04:49,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:04:49,363 INFO L82 PathProgramCache]: Analyzing trace with hash 475893007, now seen corresponding path program 1 times [2020-10-13 15:04:49,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:04:49,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118026146] [2020-10-13 15:04:49,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:04:49,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:04:49,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:49,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:50,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:50,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:50,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:50,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:51,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:51,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:51,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:51,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:51,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:52,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:52,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:52,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:54,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:04:54,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-13 15:04:54,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 15:04:54,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-13 15:04:54,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:04:54,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:04:54,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:04:54,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-13 15:04:54,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:04:55,410 WARN L193 SmtUtils]: Spent 685.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-13 15:04:55,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:04:55,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:04:55,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:04:55,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:04:55,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:04:55,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:04:55,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 15:04:55,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:04:55,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:04:55,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:04:55,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:04:55,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:04:55,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:04:55,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118026146] [2020-10-13 15:04:55,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:04:55,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:04:55,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900409856] [2020-10-13 15:04:55,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:04:55,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:04:55,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:04:55,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:04:55,799 INFO L87 Difference]: Start difference. First operand 1885 states and 2879 transitions. Second operand 5 states. [2020-10-13 15:05:06,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:05:06,561 INFO L93 Difference]: Finished difference Result 5566 states and 8490 transitions. [2020-10-13 15:05:06,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:05:06,562 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 326 [2020-10-13 15:05:06,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:05:06,583 INFO L225 Difference]: With dead ends: 5566 [2020-10-13 15:05:06,583 INFO L226 Difference]: Without dead ends: 3697 [2020-10-13 15:05:06,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:05:06,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3697 states. [2020-10-13 15:05:06,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3697 to 3600. [2020-10-13 15:05:06,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3600 states. [2020-10-13 15:05:06,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3600 states to 3600 states and 5485 transitions. [2020-10-13 15:05:06,762 INFO L78 Accepts]: Start accepts. Automaton has 3600 states and 5485 transitions. Word has length 326 [2020-10-13 15:05:06,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:05:06,764 INFO L479 AbstractCegarLoop]: Abstraction has 3600 states and 5485 transitions. [2020-10-13 15:05:06,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:05:06,765 INFO L276 IsEmpty]: Start isEmpty. Operand 3600 states and 5485 transitions. [2020-10-13 15:05:06,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-13 15:05:06,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:05:06,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:05:06,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 15:05:06,782 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:05:06,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:05:06,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1452458326, now seen corresponding path program 1 times [2020-10-13 15:05:06,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:05:06,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682223542] [2020-10-13 15:05:06,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:05:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:05:06,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:07,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:07,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:07,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:07,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:07,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:08,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:08,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:08,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:08,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:08,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:08,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:08,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:10,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:11,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:05:11,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-10-13 15:05:11,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 15:05:11,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-13 15:05:11,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:05:11,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:05:11,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 15:05:11,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 15:05:11,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:05:12,625 WARN L193 SmtUtils]: Spent 538.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-13 15:05:12,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:05:12,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:05:12,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:12,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:05:12,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:05:12,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:05:12,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 15:05:12,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:05:12,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:05:12,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:05:12,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:05:12,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 15:05:12,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:05:12,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682223542] [2020-10-13 15:05:12,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:05:12,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:05:12,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409435291] [2020-10-13 15:05:12,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:05:12,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:05:12,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:05:12,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:05:12,801 INFO L87 Difference]: Start difference. First operand 3600 states and 5485 transitions. Second operand 4 states. [2020-10-13 15:05:23,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:05:23,813 INFO L93 Difference]: Finished difference Result 10735 states and 16349 transitions. [2020-10-13 15:05:23,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:05:23,813 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 328 [2020-10-13 15:05:23,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:05:23,849 INFO L225 Difference]: With dead ends: 10735 [2020-10-13 15:05:23,849 INFO L226 Difference]: Without dead ends: 7168 [2020-10-13 15:05:23,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:05:23,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7168 states. [2020-10-13 15:05:24,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7168 to 3614. [2020-10-13 15:05:24,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3614 states. [2020-10-13 15:05:24,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3614 states to 3614 states and 5502 transitions. [2020-10-13 15:05:24,057 INFO L78 Accepts]: Start accepts. Automaton has 3614 states and 5502 transitions. Word has length 328 [2020-10-13 15:05:24,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:05:24,057 INFO L479 AbstractCegarLoop]: Abstraction has 3614 states and 5502 transitions. [2020-10-13 15:05:24,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:05:24,057 INFO L276 IsEmpty]: Start isEmpty. Operand 3614 states and 5502 transitions. [2020-10-13 15:05:24,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-13 15:05:24,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:05:24,068 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:05:24,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 15:05:24,069 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:05:24,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:05:24,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1806349788, now seen corresponding path program 1 times [2020-10-13 15:05:24,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:05:24,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690326394] [2020-10-13 15:05:24,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:05:24,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:05:24,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:24,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:24,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:24,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:24,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:25,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:25,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:25,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:25,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:25,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:25,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:25,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:25,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:27,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:29,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:05:29,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-13 15:05:29,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 15:05:29,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-13 15:05:29,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:05:29,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:05:29,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 15:05:29,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-13 15:05:29,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:05:29,962 WARN L193 SmtUtils]: Spent 553.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-13 15:05:29,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:05:29,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:05:29,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:29,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:05:29,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:05:29,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:05:29,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 15:05:29,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:05:29,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:05:29,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:05:29,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:05:29,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:05:30,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:05:30,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690326394] [2020-10-13 15:05:30,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:05:30,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:05:30,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309965678] [2020-10-13 15:05:30,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:05:30,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:05:30,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:05:30,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:05:30,176 INFO L87 Difference]: Start difference. First operand 3614 states and 5502 transitions. Second operand 5 states. [2020-10-13 15:05:40,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:05:40,095 INFO L93 Difference]: Finished difference Result 10569 states and 16050 transitions. [2020-10-13 15:05:40,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:05:40,096 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 330 [2020-10-13 15:05:40,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:05:40,126 INFO L225 Difference]: With dead ends: 10569 [2020-10-13 15:05:40,127 INFO L226 Difference]: Without dead ends: 7079 [2020-10-13 15:05:40,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:05:40,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7079 states. [2020-10-13 15:05:40,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7079 to 7005. [2020-10-13 15:05:40,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7005 states. [2020-10-13 15:05:40,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7005 states to 7005 states and 10609 transitions. [2020-10-13 15:05:40,652 INFO L78 Accepts]: Start accepts. Automaton has 7005 states and 10609 transitions. Word has length 330 [2020-10-13 15:05:40,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:05:40,653 INFO L479 AbstractCegarLoop]: Abstraction has 7005 states and 10609 transitions. [2020-10-13 15:05:40,653 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:05:40,653 INFO L276 IsEmpty]: Start isEmpty. Operand 7005 states and 10609 transitions. [2020-10-13 15:05:40,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-13 15:05:40,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:05:40,671 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:05:40,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 15:05:40,672 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:05:40,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:05:40,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1186245309, now seen corresponding path program 1 times [2020-10-13 15:05:40,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:05:40,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477857962] [2020-10-13 15:05:40,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:05:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:05:40,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:41,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:41,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:41,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:41,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:42,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:42,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:42,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:42,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:42,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:43,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:43,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:43,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:43,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:43,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:45,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:05:45,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-13 15:05:45,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 15:05:45,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-13 15:05:45,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:05:45,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:05:45,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 15:05:45,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 15:05:45,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:05:46,536 WARN L193 SmtUtils]: Spent 505.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-13 15:05:46,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:05:46,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:05:46,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:46,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:05:46,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:05:46,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:05:46,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 15:05:46,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:05:46,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:05:46,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:05:46,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:05:46,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:05:46,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:05:46,666 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477857962] [2020-10-13 15:05:46,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:05:46,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:05:46,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359119339] [2020-10-13 15:05:46,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:05:46,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:05:46,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:05:46,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:05:46,669 INFO L87 Difference]: Start difference. First operand 7005 states and 10609 transitions. Second operand 5 states. [2020-10-13 15:05:55,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:05:55,379 INFO L93 Difference]: Finished difference Result 19551 states and 29452 transitions. [2020-10-13 15:05:55,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:05:55,380 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 330 [2020-10-13 15:05:55,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:05:55,438 INFO L225 Difference]: With dead ends: 19551 [2020-10-13 15:05:55,439 INFO L226 Difference]: Without dead ends: 13101 [2020-10-13 15:05:55,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:05:55,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13101 states. [2020-10-13 15:05:55,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13101 to 7465. [2020-10-13 15:05:55,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7465 states. [2020-10-13 15:05:55,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7465 states to 7465 states and 11397 transitions. [2020-10-13 15:05:55,959 INFO L78 Accepts]: Start accepts. Automaton has 7465 states and 11397 transitions. Word has length 330 [2020-10-13 15:05:55,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:05:55,960 INFO L479 AbstractCegarLoop]: Abstraction has 7465 states and 11397 transitions. [2020-10-13 15:05:55,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:05:55,960 INFO L276 IsEmpty]: Start isEmpty. Operand 7465 states and 11397 transitions. [2020-10-13 15:05:55,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-13 15:05:55,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:05:55,985 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:05:55,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 15:05:55,986 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:05:55,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:05:55,986 INFO L82 PathProgramCache]: Analyzing trace with hash -671482393, now seen corresponding path program 1 times [2020-10-13 15:05:55,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:05:55,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133213973] [2020-10-13 15:05:55,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:05:56,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:05:56,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:56,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:56,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:56,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:56,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:56,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:57,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:57,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:57,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:57,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:57,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:57,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:57,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:57,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:58,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:58,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:05:59,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:01,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:06:01,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-13 15:06:01,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 15:06:01,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 15:06:01,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:06:01,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:06:01,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 15:06:01,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 15:06:01,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:06:01,742 WARN L193 SmtUtils]: Spent 516.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-13 15:06:01,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:06:01,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:06:01,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:01,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:06:01,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:06:01,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:06:01,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 15:06:01,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:06:01,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:06:01,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:06:01,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:06:01,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:06:01,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:06:01,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133213973] [2020-10-13 15:06:01,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:06:01,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:06:01,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049301130] [2020-10-13 15:06:01,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:06:01,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:06:01,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:06:01,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:06:01,846 INFO L87 Difference]: Start difference. First operand 7465 states and 11397 transitions. Second operand 5 states. [2020-10-13 15:06:11,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:06:11,978 INFO L93 Difference]: Finished difference Result 20561 states and 31169 transitions. [2020-10-13 15:06:11,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:06:11,980 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 332 [2020-10-13 15:06:11,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:06:12,009 INFO L225 Difference]: With dead ends: 20561 [2020-10-13 15:06:12,009 INFO L226 Difference]: Without dead ends: 14034 [2020-10-13 15:06:12,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:06:12,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14034 states. [2020-10-13 15:06:12,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14034 to 8426. [2020-10-13 15:06:12,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8426 states. [2020-10-13 15:06:12,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8426 states to 8426 states and 13040 transitions. [2020-10-13 15:06:12,497 INFO L78 Accepts]: Start accepts. Automaton has 8426 states and 13040 transitions. Word has length 332 [2020-10-13 15:06:12,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:06:12,497 INFO L479 AbstractCegarLoop]: Abstraction has 8426 states and 13040 transitions. [2020-10-13 15:06:12,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:06:12,498 INFO L276 IsEmpty]: Start isEmpty. Operand 8426 states and 13040 transitions. [2020-10-13 15:06:12,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-13 15:06:12,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:06:12,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:06:12,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 15:06:12,516 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:06:12,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:06:12,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1097072665, now seen corresponding path program 1 times [2020-10-13 15:06:12,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:06:12,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162233033] [2020-10-13 15:06:12,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:06:12,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:06:12,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:12,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:12,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:12,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:12,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:13,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:13,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:13,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:13,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:13,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:13,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:13,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:14,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:14,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:14,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:16,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:16,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:16,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:16,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:17,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:06:17,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 340 [2020-10-13 15:06:17,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-13 15:06:17,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-13 15:06:17,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:06:17,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:06:17,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-13 15:06:17,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 15:06:17,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:06:18,204 WARN L193 SmtUtils]: Spent 522.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-13 15:06:18,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:06:18,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:06:18,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:18,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:06:18,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:06:18,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:06:18,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 15:06:18,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:06:18,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:06:18,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:06:18,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:06:18,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:06:18,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:06:18,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162233033] [2020-10-13 15:06:18,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:06:18,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:06:18,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163519649] [2020-10-13 15:06:18,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:06:18,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:06:18,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:06:18,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:06:18,300 INFO L87 Difference]: Start difference. First operand 8426 states and 13040 transitions. Second operand 4 states. [2020-10-13 15:06:25,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:06:25,053 INFO L93 Difference]: Finished difference Result 21496 states and 32514 transitions. [2020-10-13 15:06:25,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:06:25,054 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 334 [2020-10-13 15:06:25,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:06:25,084 INFO L225 Difference]: With dead ends: 21496 [2020-10-13 15:06:25,084 INFO L226 Difference]: Without dead ends: 14997 [2020-10-13 15:06:25,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:06:25,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14997 states. [2020-10-13 15:06:25,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14997 to 8629. [2020-10-13 15:06:25,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8629 states. [2020-10-13 15:06:25,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8629 states to 8629 states and 13299 transitions. [2020-10-13 15:06:25,643 INFO L78 Accepts]: Start accepts. Automaton has 8629 states and 13299 transitions. Word has length 334 [2020-10-13 15:06:25,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:06:25,644 INFO L479 AbstractCegarLoop]: Abstraction has 8629 states and 13299 transitions. [2020-10-13 15:06:25,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:06:25,644 INFO L276 IsEmpty]: Start isEmpty. Operand 8629 states and 13299 transitions. [2020-10-13 15:06:25,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-13 15:06:25,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:06:25,658 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:06:25,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 15:06:25,659 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:06:25,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:06:25,659 INFO L82 PathProgramCache]: Analyzing trace with hash -341330540, now seen corresponding path program 1 times [2020-10-13 15:06:25,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:06:25,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [725765212] [2020-10-13 15:06:25,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:06:25,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:06:25,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:25,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:25,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:25,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:26,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:26,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:26,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:26,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:26,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:26,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:26,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:26,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:27,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:27,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:27,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:28,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:30,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:06:30,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 340 [2020-10-13 15:06:30,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 15:06:30,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 15:06:30,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:06:30,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:06:30,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 15:06:30,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 15:06:30,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:06:31,339 WARN L193 SmtUtils]: Spent 518.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-13 15:06:31,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:06:31,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:06:31,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:31,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:06:31,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:06:31,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:06:31,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 15:06:31,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:06:31,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:06:31,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:06:31,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:06:31,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:06:31,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:06:31,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [725765212] [2020-10-13 15:06:31,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:06:31,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:06:31,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999340387] [2020-10-13 15:06:31,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:06:31,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:06:31,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:06:31,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:06:31,450 INFO L87 Difference]: Start difference. First operand 8629 states and 13299 transitions. Second operand 5 states. [2020-10-13 15:06:44,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:06:44,140 INFO L93 Difference]: Finished difference Result 22620 states and 34528 transitions. [2020-10-13 15:06:44,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:06:44,141 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 334 [2020-10-13 15:06:44,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:06:44,167 INFO L225 Difference]: With dead ends: 22620 [2020-10-13 15:06:44,167 INFO L226 Difference]: Without dead ends: 16005 [2020-10-13 15:06:44,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:06:44,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16005 states. [2020-10-13 15:06:44,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16005 to 10377. [2020-10-13 15:06:44,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10377 states. [2020-10-13 15:06:44,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10377 states to 10377 states and 16255 transitions. [2020-10-13 15:06:44,866 INFO L78 Accepts]: Start accepts. Automaton has 10377 states and 16255 transitions. Word has length 334 [2020-10-13 15:06:44,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:06:44,867 INFO L479 AbstractCegarLoop]: Abstraction has 10377 states and 16255 transitions. [2020-10-13 15:06:44,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:06:44,867 INFO L276 IsEmpty]: Start isEmpty. Operand 10377 states and 16255 transitions. [2020-10-13 15:06:44,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-13 15:06:44,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:06:44,879 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:06:44,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 15:06:44,880 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:06:44,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:06:44,880 INFO L82 PathProgramCache]: Analyzing trace with hash 176835824, now seen corresponding path program 1 times [2020-10-13 15:06:44,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:06:44,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224289253] [2020-10-13 15:06:44,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:06:45,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:06:45,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:45,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:45,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:45,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:45,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:45,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:45,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:45,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:45,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:46,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:46,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:46,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:46,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:46,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:46,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:50,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:06:50,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 340 [2020-10-13 15:06:50,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 15:06:50,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 15:06:50,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:06:50,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:06:50,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-13 15:06:50,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 15:06:50,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:06:50,684 WARN L193 SmtUtils]: Spent 535.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-13 15:06:50,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:06:50,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:06:50,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:06:50,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:06:50,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:06:50,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:06:50,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 15:06:50,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:06:50,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:06:50,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:06:50,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:06:50,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:06:50,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:06:50,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224289253] [2020-10-13 15:06:50,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:06:50,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:06:50,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307143462] [2020-10-13 15:06:50,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:06:50,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:06:50,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:06:50,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:06:50,811 INFO L87 Difference]: Start difference. First operand 10377 states and 16255 transitions. Second operand 4 states. [2020-10-13 15:06:59,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:06:59,069 INFO L93 Difference]: Finished difference Result 17374 states and 26914 transitions. [2020-10-13 15:06:59,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:06:59,070 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 334 [2020-10-13 15:06:59,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:06:59,082 INFO L225 Difference]: With dead ends: 17374 [2020-10-13 15:06:59,083 INFO L226 Difference]: Without dead ends: 12540 [2020-10-13 15:06:59,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:06:59,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12540 states. [2020-10-13 15:06:59,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12540 to 11285. [2020-10-13 15:06:59,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11285 states. [2020-10-13 15:06:59,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11285 states to 11285 states and 17744 transitions. [2020-10-13 15:06:59,724 INFO L78 Accepts]: Start accepts. Automaton has 11285 states and 17744 transitions. Word has length 334 [2020-10-13 15:06:59,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:06:59,725 INFO L479 AbstractCegarLoop]: Abstraction has 11285 states and 17744 transitions. [2020-10-13 15:06:59,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:06:59,725 INFO L276 IsEmpty]: Start isEmpty. Operand 11285 states and 17744 transitions. [2020-10-13 15:06:59,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-10-13 15:06:59,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:06:59,737 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:06:59,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 15:06:59,737 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:06:59,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:06:59,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1295780269, now seen corresponding path program 1 times [2020-10-13 15:06:59,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:06:59,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200173919] [2020-10-13 15:06:59,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:06:59,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:06:59,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:00,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:00,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:00,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:00,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:00,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:00,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:00,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:02,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:02,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:02,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:02,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:02,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:02,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:02,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:03,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:03,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:03,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:03,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:04,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:07:04,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 342 [2020-10-13 15:07:04,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-13 15:07:04,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-13 15:07:04,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:07:04,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 15:07:04,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-13 15:07:04,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 15:07:04,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:07:06,241 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 322 [2020-10-13 15:07:06,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:07:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:07:06,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:06,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:07:06,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:07:06,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:07:06,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 15:07:06,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:07:06,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:07:06,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:07:06,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:07:06,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:07:06,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:07:06,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200173919] [2020-10-13 15:07:06,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:07:06,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:07:06,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017004937] [2020-10-13 15:07:06,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 15:07:06,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:07:06,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 15:07:06,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 15:07:06,348 INFO L87 Difference]: Start difference. First operand 11285 states and 17744 transitions. Second operand 5 states. [2020-10-13 15:07:13,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:07:13,512 INFO L93 Difference]: Finished difference Result 17801 states and 27568 transitions. [2020-10-13 15:07:13,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 15:07:13,513 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 336 [2020-10-13 15:07:13,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:07:13,525 INFO L225 Difference]: With dead ends: 17801 [2020-10-13 15:07:13,525 INFO L226 Difference]: Without dead ends: 10019 [2020-10-13 15:07:13,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:07:13,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10019 states. [2020-10-13 15:07:14,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10019 to 9971. [2020-10-13 15:07:14,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9971 states. [2020-10-13 15:07:14,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9971 states to 9971 states and 15660 transitions. [2020-10-13 15:07:14,105 INFO L78 Accepts]: Start accepts. Automaton has 9971 states and 15660 transitions. Word has length 336 [2020-10-13 15:07:14,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:07:14,105 INFO L479 AbstractCegarLoop]: Abstraction has 9971 states and 15660 transitions. [2020-10-13 15:07:14,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 15:07:14,105 INFO L276 IsEmpty]: Start isEmpty. Operand 9971 states and 15660 transitions. [2020-10-13 15:07:14,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-10-13 15:07:14,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:07:14,116 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:07:14,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 15:07:14,117 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:07:14,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:07:14,117 INFO L82 PathProgramCache]: Analyzing trace with hash -106312514, now seen corresponding path program 1 times [2020-10-13 15:07:14,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:07:14,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295756955] [2020-10-13 15:07:14,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:07:14,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:07:14,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:14,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:14,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:14,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:14,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:14,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:14,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:14,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:14,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:15,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:15,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:15,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:15,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:15,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:19,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:07:19,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 343 [2020-10-13 15:07:19,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 15:07:19,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-13 15:07:19,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:07:19,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:07:19,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 15:07:19,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-13 15:07:19,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:07:19,835 WARN L193 SmtUtils]: Spent 544.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-13 15:07:19,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:07:19,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:07:19,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:19,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:07:19,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:07:19,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:07:19,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 15:07:19,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:07:19,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:07:19,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:07:19,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:07:19,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:07:19,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:07:19,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295756955] [2020-10-13 15:07:19,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:07:19,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:07:19,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394968996] [2020-10-13 15:07:19,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:07:19,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:07:19,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:07:19,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:07:19,961 INFO L87 Difference]: Start difference. First operand 9971 states and 15660 transitions. Second operand 4 states. [2020-10-13 15:07:32,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:07:32,902 INFO L93 Difference]: Finished difference Result 25197 states and 38888 transitions. [2020-10-13 15:07:32,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:07:32,902 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 337 [2020-10-13 15:07:32,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:07:32,920 INFO L225 Difference]: With dead ends: 25197 [2020-10-13 15:07:32,920 INFO L226 Difference]: Without dead ends: 18107 [2020-10-13 15:07:32,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:07:32,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18107 states. [2020-10-13 15:07:33,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18107 to 17759. [2020-10-13 15:07:33,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17759 states. [2020-10-13 15:07:33,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17759 states to 17759 states and 27522 transitions. [2020-10-13 15:07:33,908 INFO L78 Accepts]: Start accepts. Automaton has 17759 states and 27522 transitions. Word has length 337 [2020-10-13 15:07:33,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:07:33,908 INFO L479 AbstractCegarLoop]: Abstraction has 17759 states and 27522 transitions. [2020-10-13 15:07:33,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:07:33,908 INFO L276 IsEmpty]: Start isEmpty. Operand 17759 states and 27522 transitions. [2020-10-13 15:07:33,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2020-10-13 15:07:33,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:07:33,926 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:07:33,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 15:07:33,927 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:07:33,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:07:33,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1013289771, now seen corresponding path program 1 times [2020-10-13 15:07:33,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:07:33,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [499151766] [2020-10-13 15:07:33,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:07:33,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:07:34,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:34,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:34,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:34,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:34,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:34,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:34,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:34,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:34,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:34,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:35,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:35,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:35,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:39,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:07:39,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 344 [2020-10-13 15:07:39,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-13 15:07:39,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-13 15:07:39,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:07:39,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:07:39,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 15:07:39,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-13 15:07:39,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:07:39,646 WARN L193 SmtUtils]: Spent 546.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-13 15:07:39,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:07:39,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:07:39,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:39,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:07:39,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:07:39,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:07:39,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 15:07:39,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:07:39,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 15:07:39,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:07:39,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 15:07:39,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:07:39,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:07:39,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [499151766] [2020-10-13 15:07:39,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:07:39,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 15:07:39,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799399930] [2020-10-13 15:07:39,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 15:07:39,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:07:39,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 15:07:39,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:07:39,775 INFO L87 Difference]: Start difference. First operand 17759 states and 27522 transitions. Second operand 4 states. [2020-10-13 15:07:53,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 15:07:53,741 INFO L93 Difference]: Finished difference Result 44901 states and 68827 transitions. [2020-10-13 15:07:53,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 15:07:53,742 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 338 [2020-10-13 15:07:53,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 15:07:53,773 INFO L225 Difference]: With dead ends: 44901 [2020-10-13 15:07:53,773 INFO L226 Difference]: Without dead ends: 30974 [2020-10-13 15:07:53,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 15:07:53,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30974 states. [2020-10-13 15:07:55,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30974 to 30342. [2020-10-13 15:07:55,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30342 states. [2020-10-13 15:07:55,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30342 states to 30342 states and 46588 transitions. [2020-10-13 15:07:55,481 INFO L78 Accepts]: Start accepts. Automaton has 30342 states and 46588 transitions. Word has length 338 [2020-10-13 15:07:55,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 15:07:55,481 INFO L479 AbstractCegarLoop]: Abstraction has 30342 states and 46588 transitions. [2020-10-13 15:07:55,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 15:07:55,481 INFO L276 IsEmpty]: Start isEmpty. Operand 30342 states and 46588 transitions. [2020-10-13 15:07:55,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-10-13 15:07:55,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 15:07:55,505 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 15:07:55,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 15:07:55,505 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 15:07:55,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 15:07:55,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1881952180, now seen corresponding path program 1 times [2020-10-13 15:07:55,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 15:07:55,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454081377] [2020-10-13 15:07:55,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 15:07:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:07:55,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:55,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:55,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:55,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:55,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:55,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:55,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:55,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:56,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:56,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:56,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:56,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:56,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:58,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:58,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:58,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:07:58,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:00,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:08:00,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 345 [2020-10-13 15:08:00,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 15:08:00,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-13 15:08:00,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:08:00,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 15:08:00,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 15:08:00,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-13 15:08:00,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:08:01,250 WARN L193 SmtUtils]: Spent 556.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-10-13 15:08:01,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 15:08:01,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 15:08:01,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 15:08:01,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 15:08:01,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 15:08:01,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 15:08:01,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 15:08:01,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 15:08:01,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 15:08:01,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 15:08:01,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 15:08:01,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 15:08:01,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 15:08:01,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454081377] [2020-10-13 15:08:01,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 15:08:01,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 15:08:01,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595109032] [2020-10-13 15:08:01,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 15:08:01,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 15:08:01,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 15:08:01,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 15:08:01,389 INFO L87 Difference]: Start difference. First operand 30342 states and 46588 transitions. Second operand 6 states. [2020-10-13 15:08:02,061 WARN L193 SmtUtils]: Spent 607.00 ms on a formula simplification that was a NOOP. DAG size: 328