/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 14:01:54,262 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 14:01:54,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 14:01:54,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 14:01:54,308 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 14:01:54,319 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 14:01:54,321 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 14:01:54,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 14:01:54,327 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 14:01:54,329 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 14:01:54,330 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 14:01:54,333 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 14:01:54,333 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 14:01:54,336 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 14:01:54,337 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 14:01:54,339 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 14:01:54,340 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 14:01:54,342 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 14:01:54,344 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 14:01:54,348 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 14:01:54,352 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 14:01:54,353 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 14:01:54,355 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 14:01:54,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 14:01:54,360 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 14:01:54,360 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 14:01:54,361 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 14:01:54,363 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 14:01:54,364 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 14:01:54,365 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 14:01:54,366 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 14:01:54,366 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 14:01:54,367 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 14:01:54,368 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 14:01:54,368 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 14:01:54,369 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 14:01:54,369 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 14:01:54,369 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 14:01:54,370 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 14:01:54,370 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 14:01:54,371 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 14:01:54,372 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 14:01:54,393 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 14:01:54,394 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 14:01:54,395 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 14:01:54,395 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 14:01:54,395 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 14:01:54,396 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 14:01:54,396 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 14:01:54,396 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 14:01:54,396 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 14:01:54,396 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 14:01:54,397 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 14:01:54,397 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 14:01:54,397 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 14:01:54,397 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 14:01:54,397 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 14:01:54,398 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 14:01:54,398 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 14:01:54,398 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 14:01:54,398 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 14:01:54,399 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 14:01:54,399 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 14:01:54,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 14:01:54,399 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 14:01:54,400 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 14:01:54,400 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 14:01:54,400 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 14:01:54,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 14:01:54,400 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 14:01:54,400 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 14:01:54,401 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 14:01:54,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 14:01:54,697 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 14:01:54,701 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 14:01:54,702 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 14:01:54,703 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 14:01:54,703 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-13 14:01:54,783 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09279964e/3b12a833b4884c6d8f210702d27be42a/FLAG3af4fe3fa [2020-10-13 14:01:55,362 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 14:01:55,363 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-13 14:01:55,397 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09279964e/3b12a833b4884c6d8f210702d27be42a/FLAG3af4fe3fa [2020-10-13 14:01:55,582 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09279964e/3b12a833b4884c6d8f210702d27be42a [2020-10-13 14:01:55,590 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 14:01:55,591 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 14:01:55,594 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 14:01:55,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 14:01:55,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 14:01:55,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:01:55" (1/1) ... [2020-10-13 14:01:55,601 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b8831ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:55, skipping insertion in model container [2020-10-13 14:01:55,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:01:55" (1/1) ... [2020-10-13 14:01:55,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 14:01:55,710 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 14:01:56,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:01:56,612 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 14:01:57,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 14:01:57,371 INFO L208 MainTranslator]: Completed translation [2020-10-13 14:01:57,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:57 WrapperNode [2020-10-13 14:01:57,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 14:01:57,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 14:01:57,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 14:01:57,373 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 14:01:57,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:57" (1/1) ... [2020-10-13 14:01:57,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:57" (1/1) ... [2020-10-13 14:01:57,413 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:57" (1/1) ... [2020-10-13 14:01:57,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:57" (1/1) ... [2020-10-13 14:01:57,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:57" (1/1) ... [2020-10-13 14:01:57,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:57" (1/1) ... [2020-10-13 14:01:57,542 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:57" (1/1) ... [2020-10-13 14:01:57,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 14:01:57,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 14:01:57,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 14:01:57,562 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 14:01:57,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:57" (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 14:01:57,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 14:01:57,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 14:01:57,644 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-13 14:01:57,644 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 14:01:57,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 14:01:57,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 14:01:57,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-13 14:01:57,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-13 14:01:57,645 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-13 14:01:57,645 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 14:01:57,645 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-13 14:01:57,645 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-13 14:01:57,646 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-13 14:01:57,646 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-13 14:01:57,646 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-13 14:01:57,646 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-13 14:01:57,646 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-13 14:01:57,647 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-13 14:01:57,647 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-13 14:01:57,647 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 14:01:57,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 14:01:57,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 14:02:00,114 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 14:02:00,114 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 14:02:00,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:02:00 BoogieIcfgContainer [2020-10-13 14:02:00,124 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 14:02:00,125 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 14:02:00,126 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 14:02:00,129 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 14:02:00,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:01:55" (1/3) ... [2020-10-13 14:02:00,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d1f685 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:02:00, skipping insertion in model container [2020-10-13 14:02:00,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:57" (2/3) ... [2020-10-13 14:02:00,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63d1f685 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:02:00, skipping insertion in model container [2020-10-13 14:02:00,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:02:00" (3/3) ... [2020-10-13 14:02:00,133 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-13 14:02:00,146 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 14:02:00,156 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 14:02:00,173 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 14:02:00,205 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 14:02:00,205 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 14:02:00,205 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 14:02:00,206 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 14:02:00,206 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 14:02:00,206 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 14:02:00,206 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 14:02:00,207 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 14:02:00,238 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states. [2020-10-13 14:02:00,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-13 14:02:00,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:02:00,261 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] [2020-10-13 14:02:00,261 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:02:00,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:02:00,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1814402913, now seen corresponding path program 1 times [2020-10-13 14:02:00,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:02:00,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890922973] [2020-10-13 14:02:00,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:02:01,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:01,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:01,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:02,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:03,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:03,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:03,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:03,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:03,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:04,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:04,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:04,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:04,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:05,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:05,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:05,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:05,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:06,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:06,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-13 14:02:06,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:02:06,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5130 [2020-10-13 14:02:06,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:06,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:02:06,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:02:06,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 14:02:06,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 14:02:07,160 WARN L193 SmtUtils]: Spent 519.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:02:07,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:02:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:07,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:07,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:07,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:02:07,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:02:07,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 14:02:07,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:07,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:02:07,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:02:07,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:02:07,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:02:07,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:02:07,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890922973] [2020-10-13 14:02:07,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:02:07,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:02:07,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591299138] [2020-10-13 14:02:07,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:02:07,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:02:07,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:02:07,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:02:07,511 INFO L87 Difference]: Start difference. First operand 721 states. Second operand 5 states. [2020-10-13 14:02:15,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:02:15,806 INFO L93 Difference]: Finished difference Result 2083 states and 3717 transitions. [2020-10-13 14:02:15,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 14:02:15,809 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 310 [2020-10-13 14:02:15,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:02:15,844 INFO L225 Difference]: With dead ends: 2083 [2020-10-13 14:02:15,845 INFO L226 Difference]: Without dead ends: 1405 [2020-10-13 14:02:15,855 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 14:02:15,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2020-10-13 14:02:16,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 1403. [2020-10-13 14:02:16,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1403 states. [2020-10-13 14:02:16,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 2164 transitions. [2020-10-13 14:02:16,026 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 2164 transitions. Word has length 310 [2020-10-13 14:02:16,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:02:16,027 INFO L479 AbstractCegarLoop]: Abstraction has 1403 states and 2164 transitions. [2020-10-13 14:02:16,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:02:16,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 2164 transitions. [2020-10-13 14:02:16,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-13 14:02:16,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:02:16,037 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] [2020-10-13 14:02:16,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 14:02:16,037 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:02:16,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:02:16,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1182099026, now seen corresponding path program 1 times [2020-10-13 14:02:16,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:02:16,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827941838] [2020-10-13 14:02:16,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:02:16,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:16,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:16,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:16,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:16,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:17,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:17,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:17,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:17,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:17,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:18,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:18,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:18,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:18,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:18,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:21,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:21,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-13 14:02:21,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:02:21,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-13 14:02:21,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:21,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:02:21,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:02:21,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-13 14:02:21,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:02:21,992 WARN L193 SmtUtils]: Spent 552.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:02:21,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:02:22,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:22,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:22,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:22,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:02:22,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:02:22,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 14:02:22,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:22,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:02:22,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:02:22,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:02:22,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:02:22,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:02:22,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827941838] [2020-10-13 14:02:22,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:02:22,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:02:22,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904030101] [2020-10-13 14:02:22,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:02:22,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:02:22,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:02:22,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:02:22,311 INFO L87 Difference]: Start difference. First operand 1403 states and 2164 transitions. Second operand 5 states. [2020-10-13 14:02:30,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:02:30,520 INFO L93 Difference]: Finished difference Result 4110 states and 6327 transitions. [2020-10-13 14:02:30,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:02:30,521 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 312 [2020-10-13 14:02:30,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:02:30,536 INFO L225 Difference]: With dead ends: 4110 [2020-10-13 14:02:30,536 INFO L226 Difference]: Without dead ends: 2760 [2020-10-13 14:02:30,540 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 14:02:30,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2760 states. [2020-10-13 14:02:30,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2760 to 2758. [2020-10-13 14:02:30,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2758 states. [2020-10-13 14:02:30,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2758 states to 2758 states and 4232 transitions. [2020-10-13 14:02:30,697 INFO L78 Accepts]: Start accepts. Automaton has 2758 states and 4232 transitions. Word has length 312 [2020-10-13 14:02:30,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:02:30,698 INFO L479 AbstractCegarLoop]: Abstraction has 2758 states and 4232 transitions. [2020-10-13 14:02:30,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:02:30,698 INFO L276 IsEmpty]: Start isEmpty. Operand 2758 states and 4232 transitions. [2020-10-13 14:02:30,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-13 14:02:30,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:02:30,708 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] [2020-10-13 14:02:30,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 14:02:30,708 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:02:30,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:02:30,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1193612812, now seen corresponding path program 1 times [2020-10-13 14:02:30,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:02:30,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626583160] [2020-10-13 14:02:30,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:02:30,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:30,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:30,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:30,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:31,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:31,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:31,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:31,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:32,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:32,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:32,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:32,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:32,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:34,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:34,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:34,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:35,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:35,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-13 14:02:35,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:02:35,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 14:02:35,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:35,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:02:35,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 14:02:35,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 14:02:35,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:02:36,252 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:02:36,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:02:36,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:36,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:36,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:36,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:02:36,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:02:36,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 14:02:36,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:36,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:02:36,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:02:36,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:02:36,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:02:36,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:02:36,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626583160] [2020-10-13 14:02:36,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:02:36,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:02:36,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886333383] [2020-10-13 14:02:36,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:02:36,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:02:36,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:02:36,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:02:36,477 INFO L87 Difference]: Start difference. First operand 2758 states and 4232 transitions. Second operand 4 states. [2020-10-13 14:02:44,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:02:44,755 INFO L93 Difference]: Finished difference Result 8214 states and 12592 transitions. [2020-10-13 14:02:44,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:02:44,762 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 314 [2020-10-13 14:02:44,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:02:44,787 INFO L225 Difference]: With dead ends: 8214 [2020-10-13 14:02:44,787 INFO L226 Difference]: Without dead ends: 5484 [2020-10-13 14:02:44,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:02:44,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5484 states. [2020-10-13 14:02:45,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5484 to 2778. [2020-10-13 14:02:45,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2778 states. [2020-10-13 14:02:45,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2778 states to 2778 states and 4258 transitions. [2020-10-13 14:02:45,009 INFO L78 Accepts]: Start accepts. Automaton has 2778 states and 4258 transitions. Word has length 314 [2020-10-13 14:02:45,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:02:45,009 INFO L479 AbstractCegarLoop]: Abstraction has 2778 states and 4258 transitions. [2020-10-13 14:02:45,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:02:45,011 INFO L276 IsEmpty]: Start isEmpty. Operand 2778 states and 4258 transitions. [2020-10-13 14:02:45,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-13 14:02:45,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:02:45,020 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] [2020-10-13 14:02:45,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 14:02:45,020 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:02:45,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:02:45,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1111841856, now seen corresponding path program 1 times [2020-10-13 14:02:45,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:02:45,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351015809] [2020-10-13 14:02:45,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:02:45,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:45,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:45,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:45,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:45,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:45,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:45,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:46,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:46,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:46,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:46,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:46,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:46,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:46,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:48,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:48,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:50,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:50,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-13 14:02:50,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:02:50,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-13 14:02:50,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:50,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:02:50,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:02:50,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-13 14:02:50,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:02:50,831 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:02:50,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:02:50,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:50,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:50,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:02:50,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:02:50,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:02:50,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:02:50,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:02:50,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:02:50,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:02:50,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:02:50,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:02:51,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:02:51,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351015809] [2020-10-13 14:02:51,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:02:51,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:02:51,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120025972] [2020-10-13 14:02:51,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:02:51,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:02:51,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:02:51,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:02:51,053 INFO L87 Difference]: Start difference. First operand 2778 states and 4258 transitions. Second operand 5 states. [2020-10-13 14:02:58,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:02:58,374 INFO L93 Difference]: Finished difference Result 8096 states and 12378 transitions. [2020-10-13 14:02:58,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:02:58,375 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 316 [2020-10-13 14:02:58,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:02:58,403 INFO L225 Difference]: With dead ends: 8096 [2020-10-13 14:02:58,404 INFO L226 Difference]: Without dead ends: 5454 [2020-10-13 14:02:58,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:02:58,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5454 states. [2020-10-13 14:02:58,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5454 to 5452. [2020-10-13 14:02:58,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5452 states. [2020-10-13 14:02:58,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5452 states to 5452 states and 8306 transitions. [2020-10-13 14:02:58,858 INFO L78 Accepts]: Start accepts. Automaton has 5452 states and 8306 transitions. Word has length 316 [2020-10-13 14:02:58,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:02:58,860 INFO L479 AbstractCegarLoop]: Abstraction has 5452 states and 8306 transitions. [2020-10-13 14:02:58,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:02:58,860 INFO L276 IsEmpty]: Start isEmpty. Operand 5452 states and 8306 transitions. [2020-10-13 14:02:58,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-13 14:02:58,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:02:58,877 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] [2020-10-13 14:02:58,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 14:02:58,878 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:02:58,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:02:58,878 INFO L82 PathProgramCache]: Analyzing trace with hash 387285566, now seen corresponding path program 1 times [2020-10-13 14:02:58,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:02:58,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244718585] [2020-10-13 14:02:58,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:02:59,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:02:59,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:59,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:59,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:59,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:02:59,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:00,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:00,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:00,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:00,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:00,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:00,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:00,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:01,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:01,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:01,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:04,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:04,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-13 14:03:04,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:03:04,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 14:03:04,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:04,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:03:04,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 14:03:04,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 14:03:04,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:03:04,566 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:03:04,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:03:04,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:04,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:04,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:04,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:03:04,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:03:04,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 14:03:04,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:04,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:03:04,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:03:04,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:03:04,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:04,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:03:04,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244718585] [2020-10-13 14:03:04,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:03:04,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:03:04,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070355264] [2020-10-13 14:03:04,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:03:04,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:03:04,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:03:04,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:03:04,772 INFO L87 Difference]: Start difference. First operand 5452 states and 8306 transitions. Second operand 5 states. [2020-10-13 14:03:10,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:03:10,478 INFO L93 Difference]: Finished difference Result 15012 states and 22706 transitions. [2020-10-13 14:03:10,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:03:10,479 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 316 [2020-10-13 14:03:10,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:03:10,517 INFO L225 Difference]: With dead ends: 15012 [2020-10-13 14:03:10,517 INFO L226 Difference]: Without dead ends: 10138 [2020-10-13 14:03:10,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:03:10,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10138 states. [2020-10-13 14:03:11,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10138 to 5912. [2020-10-13 14:03:11,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5912 states. [2020-10-13 14:03:11,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5912 states to 5912 states and 9094 transitions. [2020-10-13 14:03:11,066 INFO L78 Accepts]: Start accepts. Automaton has 5912 states and 9094 transitions. Word has length 316 [2020-10-13 14:03:11,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:03:11,067 INFO L479 AbstractCegarLoop]: Abstraction has 5912 states and 9094 transitions. [2020-10-13 14:03:11,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:03:11,067 INFO L276 IsEmpty]: Start isEmpty. Operand 5912 states and 9094 transitions. [2020-10-13 14:03:11,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-10-13 14:03:11,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:03:11,089 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] [2020-10-13 14:03:11,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 14:03:11,090 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:03:11,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:03:11,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1576506617, now seen corresponding path program 1 times [2020-10-13 14:03:11,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:03:11,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380890913] [2020-10-13 14:03:11,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:03:11,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:11,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:11,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:11,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:11,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:11,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:11,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:11,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:12,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:12,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:12,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:12,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:12,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:12,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:12,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:13,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:13,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:13,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:15,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:15,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:16,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:16,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:16,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-13 14:03:16,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-13 14:03:16,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-13 14:03:16,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:16,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:03:16,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 14:03:16,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 14:03:16,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:16,704 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:03:16,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:03:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:16,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:16,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:16,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:03:16,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:03:16,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:03:16,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:16,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:03:16,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:03:16,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:03:16,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:16,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:03:16,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [380890913] [2020-10-13 14:03:16,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:03:16,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:03:16,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409293691] [2020-10-13 14:03:16,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:03:16,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:03:16,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:03:16,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:03:16,882 INFO L87 Difference]: Start difference. First operand 5912 states and 9094 transitions. Second operand 5 states. [2020-10-13 14:03:23,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:03:23,129 INFO L93 Difference]: Finished difference Result 16040 states and 24453 transitions. [2020-10-13 14:03:23,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:03:23,130 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 318 [2020-10-13 14:03:23,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:03:23,155 INFO L225 Difference]: With dead ends: 16040 [2020-10-13 14:03:23,155 INFO L226 Difference]: Without dead ends: 11089 [2020-10-13 14:03:23,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:03:23,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11089 states. [2020-10-13 14:03:23,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11089 to 6891. [2020-10-13 14:03:23,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6891 states. [2020-10-13 14:03:23,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6891 states to 6891 states and 10767 transitions. [2020-10-13 14:03:23,585 INFO L78 Accepts]: Start accepts. Automaton has 6891 states and 10767 transitions. Word has length 318 [2020-10-13 14:03:23,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:03:23,585 INFO L479 AbstractCegarLoop]: Abstraction has 6891 states and 10767 transitions. [2020-10-13 14:03:23,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:03:23,586 INFO L276 IsEmpty]: Start isEmpty. Operand 6891 states and 10767 transitions. [2020-10-13 14:03:23,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-13 14:03:23,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:03:23,604 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] [2020-10-13 14:03:23,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 14:03:23,604 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:03:23,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:03:23,605 INFO L82 PathProgramCache]: Analyzing trace with hash 301179411, now seen corresponding path program 1 times [2020-10-13 14:03:23,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:03:23,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1133533425] [2020-10-13 14:03:23,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:03:23,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:23,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:23,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:23,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:23,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:24,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:24,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:24,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:24,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:24,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:24,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:24,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:24,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:24,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:24,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:25,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:25,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:27,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:27,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:27,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:27,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:28,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:28,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-13 14:03:28,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-13 14:03:28,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 14:03:28,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:28,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:03:28,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 14:03:28,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 14:03:28,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:29,220 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:03:29,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:03:29,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:29,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:29,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:29,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:03:29,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:03:29,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:03:29,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:29,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:03:29,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:03:29,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:03:29,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:29,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:03:29,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1133533425] [2020-10-13 14:03:29,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:03:29,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:03:29,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234612481] [2020-10-13 14:03:29,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:03:29,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:03:29,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:03:29,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:03:29,328 INFO L87 Difference]: Start difference. First operand 6891 states and 10767 transitions. Second operand 5 states. [2020-10-13 14:03:36,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:03:36,142 INFO L93 Difference]: Finished difference Result 18085 states and 27915 transitions. [2020-10-13 14:03:36,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:03:36,143 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 320 [2020-10-13 14:03:36,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:03:36,172 INFO L225 Difference]: With dead ends: 18085 [2020-10-13 14:03:36,172 INFO L226 Difference]: Without dead ends: 13046 [2020-10-13 14:03:36,183 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 14:03:36,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13046 states. [2020-10-13 14:03:36,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13046 to 8827. [2020-10-13 14:03:36,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8827 states. [2020-10-13 14:03:36,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8827 states to 8827 states and 14040 transitions. [2020-10-13 14:03:36,795 INFO L78 Accepts]: Start accepts. Automaton has 8827 states and 14040 transitions. Word has length 320 [2020-10-13 14:03:36,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:03:36,795 INFO L479 AbstractCegarLoop]: Abstraction has 8827 states and 14040 transitions. [2020-10-13 14:03:36,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:03:36,795 INFO L276 IsEmpty]: Start isEmpty. Operand 8827 states and 14040 transitions. [2020-10-13 14:03:36,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-13 14:03:36,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:03:36,812 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] [2020-10-13 14:03:36,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 14:03:36,813 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:03:36,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:03:36,813 INFO L82 PathProgramCache]: Analyzing trace with hash 275751473, now seen corresponding path program 1 times [2020-10-13 14:03:36,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:03:36,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1564642003] [2020-10-13 14:03:36,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:03:36,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:37,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:37,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:37,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:37,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:37,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:37,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:38,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:38,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:38,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:38,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:38,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:38,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:38,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:38,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:38,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:38,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:41,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:41,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-13 14:03:41,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-13 14:03:41,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-13 14:03:41,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:41,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:03:41,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-13 14:03:41,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 14:03:41,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:42,446 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:03:42,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:03:42,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:42,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:42,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:42,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:03:42,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:03:42,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:03:42,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:42,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:03:42,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:03:42,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:03:42,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:42,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:03:42,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1564642003] [2020-10-13 14:03:42,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:03:42,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:03:42,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530729492] [2020-10-13 14:03:42,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:03:42,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:03:42,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:03:42,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:03:42,550 INFO L87 Difference]: Start difference. First operand 8827 states and 14040 transitions. Second operand 5 states. [2020-10-13 14:03:46,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:03:46,967 INFO L93 Difference]: Finished difference Result 13025 states and 20279 transitions. [2020-10-13 14:03:46,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:03:46,968 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 322 [2020-10-13 14:03:46,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:03:46,988 INFO L225 Difference]: With dead ends: 13025 [2020-10-13 14:03:46,989 INFO L226 Difference]: Without dead ends: 7727 [2020-10-13 14:03:47,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:03:47,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7727 states. [2020-10-13 14:03:47,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7727 to 7723. [2020-10-13 14:03:47,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7723 states. [2020-10-13 14:03:47,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7723 states to 7723 states and 12263 transitions. [2020-10-13 14:03:47,545 INFO L78 Accepts]: Start accepts. Automaton has 7723 states and 12263 transitions. Word has length 322 [2020-10-13 14:03:47,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:03:47,545 INFO L479 AbstractCegarLoop]: Abstraction has 7723 states and 12263 transitions. [2020-10-13 14:03:47,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:03:47,546 INFO L276 IsEmpty]: Start isEmpty. Operand 7723 states and 12263 transitions. [2020-10-13 14:03:47,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-10-13 14:03:47,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:03:47,559 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] [2020-10-13 14:03:47,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 14:03:47,560 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:03:47,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:03:47,560 INFO L82 PathProgramCache]: Analyzing trace with hash 273839826, now seen corresponding path program 1 times [2020-10-13 14:03:47,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:03:47,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238661703] [2020-10-13 14:03:47,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:03:47,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:47,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:47,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:47,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:47,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:47,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:47,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:48,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:48,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:48,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:48,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:48,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:48,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:48,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:49,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:52,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:52,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 329 [2020-10-13 14:03:52,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:03:52,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 14:03:52,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:52,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:03:52,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 14:03:52,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-13 14:03:52,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:53,054 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:03:53,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:03:53,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:03:53,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:03:53,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:03:53,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:03:53,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:03:53,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 14:03:53,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:03:53,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:03:53,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:03:53,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:03:53,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:03:53,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:03:53,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238661703] [2020-10-13 14:03:53,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:03:53,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:03:53,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106400108] [2020-10-13 14:03:53,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:03:53,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:03:53,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:03:53,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:03:53,171 INFO L87 Difference]: Start difference. First operand 7723 states and 12263 transitions. Second operand 4 states. [2020-10-13 14:04:01,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:04:01,062 INFO L93 Difference]: Finished difference Result 18350 states and 28467 transitions. [2020-10-13 14:04:01,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:04:01,063 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 323 [2020-10-13 14:04:01,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:04:01,090 INFO L225 Difference]: With dead ends: 18350 [2020-10-13 14:04:01,091 INFO L226 Difference]: Without dead ends: 13622 [2020-10-13 14:04:01,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:04:01,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13622 states. [2020-10-13 14:04:02,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13622 to 13396. [2020-10-13 14:04:02,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13396 states. [2020-10-13 14:04:02,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13396 states to 13396 states and 20921 transitions. [2020-10-13 14:04:02,044 INFO L78 Accepts]: Start accepts. Automaton has 13396 states and 20921 transitions. Word has length 323 [2020-10-13 14:04:02,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:04:02,044 INFO L479 AbstractCegarLoop]: Abstraction has 13396 states and 20921 transitions. [2020-10-13 14:04:02,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:04:02,044 INFO L276 IsEmpty]: Start isEmpty. Operand 13396 states and 20921 transitions. [2020-10-13 14:04:02,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-10-13 14:04:02,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:04:02,062 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 14:04:02,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 14:04:02,063 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:04:02,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:04:02,063 INFO L82 PathProgramCache]: Analyzing trace with hash -341374745, now seen corresponding path program 1 times [2020-10-13 14:04:02,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:04:02,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744276267] [2020-10-13 14:04:02,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:04:02,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:02,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:02,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:02,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:02,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:02,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:02,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:02,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:02,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:03,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:03,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:03,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:03,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:03,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:05,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:07,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:07,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-13 14:04:07,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:04:07,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 14:04:07,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:07,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:04:07,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 14:04:07,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-13 14:04:07,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:07,658 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:04:07,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:04:07,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:07,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:07,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:07,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:04:07,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:04:07,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 14:04:07,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:07,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:04:07,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:04:07,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:04:07,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:07,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:04:07,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744276267] [2020-10-13 14:04:07,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:04:07,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:04:07,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090191852] [2020-10-13 14:04:07,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:04:07,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:04:07,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:04:07,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:04:07,806 INFO L87 Difference]: Start difference. First operand 13396 states and 20921 transitions. Second operand 4 states. [2020-10-13 14:04:16,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:04:16,509 INFO L93 Difference]: Finished difference Result 32624 states and 50211 transitions. [2020-10-13 14:04:16,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:04:16,510 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 324 [2020-10-13 14:04:16,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:04:16,537 INFO L225 Difference]: With dead ends: 32624 [2020-10-13 14:04:16,537 INFO L226 Difference]: Without dead ends: 23154 [2020-10-13 14:04:16,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:04:16,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23154 states. [2020-10-13 14:04:18,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23154 to 22578. [2020-10-13 14:04:18,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22578 states. [2020-10-13 14:04:18,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22578 states to 22578 states and 34925 transitions. [2020-10-13 14:04:18,045 INFO L78 Accepts]: Start accepts. Automaton has 22578 states and 34925 transitions. Word has length 324 [2020-10-13 14:04:18,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:04:18,045 INFO L479 AbstractCegarLoop]: Abstraction has 22578 states and 34925 transitions. [2020-10-13 14:04:18,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:04:18,046 INFO L276 IsEmpty]: Start isEmpty. Operand 22578 states and 34925 transitions. [2020-10-13 14:04:18,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-13 14:04:18,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:04:18,071 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] [2020-10-13 14:04:18,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 14:04:18,072 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:04:18,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:04:18,072 INFO L82 PathProgramCache]: Analyzing trace with hash -396121789, now seen corresponding path program 1 times [2020-10-13 14:04:18,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:04:18,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [726488334] [2020-10-13 14:04:18,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:04:18,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:18,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:18,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:18,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:18,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:18,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:18,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:18,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:19,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:19,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:19,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:19,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:19,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:19,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:20,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:20,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:23,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:23,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-13 14:04:23,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-13 14:04:23,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-13 14:04:23,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:23,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:04:23,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-13 14:04:23,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 14:04:23,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:23,614 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:04:23,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:04:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:23,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:23,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:23,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:04:23,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:04:23,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:04:23,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:23,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:04:23,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:04:23,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:04:23,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:23,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:04:23,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [726488334] [2020-10-13 14:04:23,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:04:23,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:04:23,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500526567] [2020-10-13 14:04:23,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:04:23,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:04:23,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:04:23,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:04:23,707 INFO L87 Difference]: Start difference. First operand 22578 states and 34925 transitions. Second operand 4 states. [2020-10-13 14:04:24,138 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 267 [2020-10-13 14:04:30,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:04:30,814 INFO L93 Difference]: Finished difference Result 45164 states and 68304 transitions. [2020-10-13 14:04:30,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:04:30,815 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 325 [2020-10-13 14:04:30,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:04:30,854 INFO L225 Difference]: With dead ends: 45164 [2020-10-13 14:04:30,855 INFO L226 Difference]: Without dead ends: 34447 [2020-10-13 14:04:30,878 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:04:30,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34447 states. [2020-10-13 14:04:33,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34447 to 34445. [2020-10-13 14:04:33,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34445 states. [2020-10-13 14:04:34,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34445 states to 34445 states and 52282 transitions. [2020-10-13 14:04:34,016 INFO L78 Accepts]: Start accepts. Automaton has 34445 states and 52282 transitions. Word has length 325 [2020-10-13 14:04:34,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:04:34,017 INFO L479 AbstractCegarLoop]: Abstraction has 34445 states and 52282 transitions. [2020-10-13 14:04:34,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:04:34,017 INFO L276 IsEmpty]: Start isEmpty. Operand 34445 states and 52282 transitions. [2020-10-13 14:04:34,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-13 14:04:34,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:04:34,044 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] [2020-10-13 14:04:34,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 14:04:34,044 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:04:34,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:04:34,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1082677250, now seen corresponding path program 1 times [2020-10-13 14:04:34,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:04:34,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428058297] [2020-10-13 14:04:34,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:04:34,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:34,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:34,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:34,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:34,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:34,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:34,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:34,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:34,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:35,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:35,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:35,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:35,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:35,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:37,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:37,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:37,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:38,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:39,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:39,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-13 14:04:39,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-13 14:04:39,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-13 14:04:39,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:39,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 14:04:39,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 14:04:39,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-13 14:04:39,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:39,646 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:04:39,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:04:39,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:39,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:39,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:04:39,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:04:39,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:04:39,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 14:04:39,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:04:39,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:04:39,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:04:39,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:04:39,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:04:39,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:04:39,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428058297] [2020-10-13 14:04:39,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:04:39,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 14:04:39,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613798984] [2020-10-13 14:04:39,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 14:04:39,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:04:39,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 14:04:39,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 14:04:39,792 INFO L87 Difference]: Start difference. First operand 34445 states and 52282 transitions. Second operand 5 states. [2020-10-13 14:04:52,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:04:52,500 INFO L93 Difference]: Finished difference Result 99657 states and 150627 transitions. [2020-10-13 14:04:52,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 14:04:52,502 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 325 [2020-10-13 14:04:52,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:04:52,578 INFO L225 Difference]: With dead ends: 99657 [2020-10-13 14:04:52,578 INFO L226 Difference]: Without dead ends: 67110 [2020-10-13 14:04:52,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 14:04:52,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67110 states. [2020-10-13 14:04:57,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67110 to 67108. [2020-10-13 14:04:57,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67108 states. [2020-10-13 14:04:58,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67108 states to 67108 states and 100936 transitions. [2020-10-13 14:04:58,068 INFO L78 Accepts]: Start accepts. Automaton has 67108 states and 100936 transitions. Word has length 325 [2020-10-13 14:04:58,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:04:58,069 INFO L479 AbstractCegarLoop]: Abstraction has 67108 states and 100936 transitions. [2020-10-13 14:04:58,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 14:04:58,069 INFO L276 IsEmpty]: Start isEmpty. Operand 67108 states and 100936 transitions. [2020-10-13 14:04:58,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-10-13 14:04:58,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:04:58,135 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] [2020-10-13 14:04:58,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 14:04:58,135 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:04:58,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:04:58,135 INFO L82 PathProgramCache]: Analyzing trace with hash -322073708, now seen corresponding path program 1 times [2020-10-13 14:04:58,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:04:58,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898430469] [2020-10-13 14:04:58,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:04:58,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:04:58,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:58,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:58,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:58,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:58,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:58,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:58,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:58,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:58,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:58,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:58,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:59,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:59,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:04:59,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:03,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:05:03,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-13 14:05:03,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-13 14:05:03,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-13 14:05:03,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:05:03,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 14:05:03,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 14:05:03,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-13 14:05:03,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 14:05:03,709 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 265 [2020-10-13 14:05:03,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 14:05:03,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:05:03,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:03,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 14:05:03,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 14:05:03,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 14:05:03,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 14:05:03,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 14:05:03,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 14:05:03,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 14:05:03,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 14:05:03,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 14:05:03,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 14:05:03,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898430469] [2020-10-13 14:05:03,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 14:05:03,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 14:05:03,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245169994] [2020-10-13 14:05:03,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 14:05:03,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 14:05:03,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 14:05:03,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:05:03,839 INFO L87 Difference]: Start difference. First operand 67108 states and 100936 transitions. Second operand 4 states. [2020-10-13 14:05:21,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 14:05:21,357 INFO L93 Difference]: Finished difference Result 190599 states and 284460 transitions. [2020-10-13 14:05:21,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 14:05:21,358 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 327 [2020-10-13 14:05:21,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 14:05:21,500 INFO L225 Difference]: With dead ends: 190599 [2020-10-13 14:05:21,501 INFO L226 Difference]: Without dead ends: 131279 [2020-10-13 14:05:21,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 14:05:21,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131279 states. [2020-10-13 14:05:34,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131279 to 131277. [2020-10-13 14:05:34,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131277 states. [2020-10-13 14:05:35,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131277 states to 131277 states and 195820 transitions. [2020-10-13 14:05:35,012 INFO L78 Accepts]: Start accepts. Automaton has 131277 states and 195820 transitions. Word has length 327 [2020-10-13 14:05:35,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 14:05:35,012 INFO L479 AbstractCegarLoop]: Abstraction has 131277 states and 195820 transitions. [2020-10-13 14:05:35,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 14:05:35,012 INFO L276 IsEmpty]: Start isEmpty. Operand 131277 states and 195820 transitions. [2020-10-13 14:05:35,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-10-13 14:05:35,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 14:05:35,119 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] [2020-10-13 14:05:35,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 14:05:35,120 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 14:05:35,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 14:05:35,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1024672047, now seen corresponding path program 1 times [2020-10-13 14:05:35,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 14:05:35,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847636327] [2020-10-13 14:05:35,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 14:05:35,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 14:05:35,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:35,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:35,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:35,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:35,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:35,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 14:05:35,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking...