/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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 20:20:14,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 20:20:14,324 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 20:20:14,364 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 20:20:14,364 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 20:20:14,376 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 20:20:14,377 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 20:20:14,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 20:20:14,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 20:20:14,386 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 20:20:14,389 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 20:20:14,390 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 20:20:14,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 20:20:14,392 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 20:20:14,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 20:20:14,395 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 20:20:14,397 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 20:20:14,398 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 20:20:14,399 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 20:20:14,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 20:20:14,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 20:20:14,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 20:20:14,412 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 20:20:14,412 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 20:20:14,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 20:20:14,417 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 20:20:14,417 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 20:20:14,420 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 20:20:14,421 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 20:20:14,422 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 20:20:14,423 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 20:20:14,423 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 20:20:14,424 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 20:20:14,425 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 20:20:14,426 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 20:20:14,426 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 20:20:14,427 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 20:20:14,427 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 20:20:14,427 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 20:20:14,428 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 20:20:14,430 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 20:20:14,430 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 [2020-10-12 20:20:14,475 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 20:20:14,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 20:20:14,477 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 20:20:14,478 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 20:20:14,478 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 20:20:14,478 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 20:20:14,479 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 20:20:14,479 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 20:20:14,479 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 20:20:14,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 20:20:14,480 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 20:20:14,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 20:20:14,481 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 20:20:14,481 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 20:20:14,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 20:20:14,481 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 20:20:14,482 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 20:20:14,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 20:20:14,482 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 20:20:14,482 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 20:20:14,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 20:20:14,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 20:20:14,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 20:20:14,483 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 20:20:14,483 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 20:20:14,483 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 20:20:14,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 20:20:14,484 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 20:20:14,484 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 20:20:14,484 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 20:20:14,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 20:20:14,775 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 20:20:14,778 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 20:20:14,780 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 20:20:14,780 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 20:20:14,781 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-12 20:20:14,839 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aa83048c0/0c13ef23382d4127912633403ea9a5a1/FLAG79c6829c9 [2020-10-12 20:20:15,417 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 20:20:15,418 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-12 20:20:15,441 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aa83048c0/0c13ef23382d4127912633403ea9a5a1/FLAG79c6829c9 [2020-10-12 20:20:15,586 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/aa83048c0/0c13ef23382d4127912633403ea9a5a1 [2020-10-12 20:20:15,596 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 20:20:15,598 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 20:20:15,599 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 20:20:15,599 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 20:20:15,603 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 20:20:15,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:20:15" (1/1) ... [2020-10-12 20:20:15,606 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@723eb1b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:20:15, skipping insertion in model container [2020-10-12 20:20:15,607 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 08:20:15" (1/1) ... [2020-10-12 20:20:15,615 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 20:20:15,729 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 20:20:16,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:20:16,798 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 20:20:17,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 20:20:17,313 INFO L208 MainTranslator]: Completed translation [2020-10-12 20:20:17,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:20:17 WrapperNode [2020-10-12 20:20:17,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 20:20:17,316 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 20:20:17,316 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 20:20:17,316 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 20:20:17,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:20:17" (1/1) ... [2020-10-12 20:20:17,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:20:17" (1/1) ... [2020-10-12 20:20:17,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:20:17" (1/1) ... [2020-10-12 20:20:17,381 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:20:17" (1/1) ... [2020-10-12 20:20:17,440 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:20:17" (1/1) ... [2020-10-12 20:20:17,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:20:17" (1/1) ... [2020-10-12 20:20:17,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:20:17" (1/1) ... [2020-10-12 20:20:17,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 20:20:17,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 20:20:17,501 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 20:20:17,501 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 20:20:17,508 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:20:17" (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 [2020-10-12 20:20:17,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 20:20:17,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 20:20:17,577 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 20:20:17,577 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 20:20:17,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 20:20:17,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 20:20:17,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 20:20:17,579 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 20:20:17,579 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 20:20:17,580 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 20:20:17,580 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 20:20:17,580 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 20:20:17,580 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 20:20:17,580 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 20:20:17,581 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 20:20:17,581 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 20:20:17,582 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 20:20:17,582 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 20:20:17,582 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 20:20:17,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 20:20:17,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 20:20:19,943 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 20:20:19,943 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 20:20:19,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:20:19 BoogieIcfgContainer [2020-10-12 20:20:19,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 20:20:19,955 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 20:20:19,956 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 20:20:19,959 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 20:20:19,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 08:20:15" (1/3) ... [2020-10-12 20:20:19,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ddce335 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:20:19, skipping insertion in model container [2020-10-12 20:20:19,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 08:20:17" (2/3) ... [2020-10-12 20:20:19,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ddce335 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:20:19, skipping insertion in model container [2020-10-12 20:20:19,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 08:20:19" (3/3) ... [2020-10-12 20:20:19,963 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-10-12 20:20:19,973 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 20:20:19,982 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 20:20:19,996 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 20:20:20,027 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 20:20:20,027 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 20:20:20,028 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 20:20:20,028 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 20:20:20,028 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 20:20:20,028 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 20:20:20,028 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 20:20:20,028 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 20:20:20,061 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states. [2020-10-12 20:20:20,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-12 20:20:20,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:20:20,088 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] [2020-10-12 20:20:20,088 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:20:20,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:20:20,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1427429186, now seen corresponding path program 1 times [2020-10-12 20:20:20,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:20:20,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118591105] [2020-10-12 20:20:20,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:20:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:21,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:22,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:23,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:24,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:24,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:24,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:24,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:25,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:25,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:25,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:25,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:25,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:26,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:26,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-12 20:20:26,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 20:20:26,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5109 [2020-10-12 20:20:26,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:26,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:20:26,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:20:26,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-12 20:20:26,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 20:20:27,224 WARN L193 SmtUtils]: Spent 503.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-12 20:20:27,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:20:27,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:27,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:27,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:27,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:20:27,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:20:27,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 20:20:27,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:27,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:20:27,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:20:27,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:20:27,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:27,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:20:27,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [118591105] [2020-10-12 20:20:27,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:20:27,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:20:27,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981428781] [2020-10-12 20:20:27,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:20:27,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:20:27,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:20:27,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:20:27,564 INFO L87 Difference]: Start difference. First operand 783 states. Second operand 5 states. [2020-10-12 20:20:35,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:20:35,200 INFO L93 Difference]: Finished difference Result 2261 states and 4009 transitions. [2020-10-12 20:20:35,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 20:20:35,203 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 312 [2020-10-12 20:20:35,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:20:35,233 INFO L225 Difference]: With dead ends: 2261 [2020-10-12 20:20:35,233 INFO L226 Difference]: Without dead ends: 1503 [2020-10-12 20:20:35,242 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 [2020-10-12 20:20:35,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1503 states. [2020-10-12 20:20:35,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1503 to 1501. [2020-10-12 20:20:35,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1501 states. [2020-10-12 20:20:35,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1501 states to 1501 states and 2344 transitions. [2020-10-12 20:20:35,395 INFO L78 Accepts]: Start accepts. Automaton has 1501 states and 2344 transitions. Word has length 312 [2020-10-12 20:20:35,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:20:35,396 INFO L479 AbstractCegarLoop]: Abstraction has 1501 states and 2344 transitions. [2020-10-12 20:20:35,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:20:35,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1501 states and 2344 transitions. [2020-10-12 20:20:35,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-12 20:20:35,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:20:35,405 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] [2020-10-12 20:20:35,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 20:20:35,406 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:20:35,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:20:35,407 INFO L82 PathProgramCache]: Analyzing trace with hash 36652988, now seen corresponding path program 1 times [2020-10-12 20:20:35,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:20:35,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876835309] [2020-10-12 20:20:35,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:20:35,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:35,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:35,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:36,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:36,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:36,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:36,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:37,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:37,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:37,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:37,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:37,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:38,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:38,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:38,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:40,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:40,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-12 20:20:40,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 20:20:40,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-12 20:20:40,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:40,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:20:40,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:20:40,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-12 20:20:40,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:41,181 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-12 20:20:41,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:20:41,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:41,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:41,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:41,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:20:41,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:20:41,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 20:20:41,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:41,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:20:41,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:20:41,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:20:41,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:20:41,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:20:41,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876835309] [2020-10-12 20:20:41,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:20:41,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:20:41,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678672696] [2020-10-12 20:20:41,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:20:41,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:20:41,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:20:41,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:20:41,546 INFO L87 Difference]: Start difference. First operand 1501 states and 2344 transitions. Second operand 5 states. [2020-10-12 20:20:50,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:20:50,407 INFO L93 Difference]: Finished difference Result 4356 states and 6783 transitions. [2020-10-12 20:20:50,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:20:50,408 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 314 [2020-10-12 20:20:50,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:20:50,432 INFO L225 Difference]: With dead ends: 4356 [2020-10-12 20:20:50,432 INFO L226 Difference]: Without dead ends: 2910 [2020-10-12 20:20:50,439 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 [2020-10-12 20:20:50,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2910 states. [2020-10-12 20:20:50,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2910 to 2908. [2020-10-12 20:20:50,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2908 states. [2020-10-12 20:20:50,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2908 states to 2908 states and 4503 transitions. [2020-10-12 20:20:50,646 INFO L78 Accepts]: Start accepts. Automaton has 2908 states and 4503 transitions. Word has length 314 [2020-10-12 20:20:50,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:20:50,649 INFO L479 AbstractCegarLoop]: Abstraction has 2908 states and 4503 transitions. [2020-10-12 20:20:50,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:20:50,650 INFO L276 IsEmpty]: Start isEmpty. Operand 2908 states and 4503 transitions. [2020-10-12 20:20:50,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-12 20:20:50,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:20:50,668 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] [2020-10-12 20:20:50,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 20:20:50,669 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:20:50,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:20:50,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1388457801, now seen corresponding path program 1 times [2020-10-12 20:20:50,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:20:50,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043322824] [2020-10-12 20:20:50,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:20:50,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:50,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:50,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:51,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:51,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:51,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:51,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:51,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:52,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:52,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:52,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:52,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:52,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:53,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:53,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:53,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:55,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:55,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-12 20:20:55,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 20:20:55,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-12 20:20:55,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:55,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:20:55,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:20:55,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-12 20:20:55,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 20:20:56,302 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-12 20:20:56,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:20:56,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:20:56,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:20:56,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:20:56,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:20:56,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:20:56,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 20:20:56,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:20:56,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:20:56,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:20:56,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:20:56,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:20:56,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:20:56,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1043322824] [2020-10-12 20:20:56,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:20:56,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:20:56,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035294508] [2020-10-12 20:20:56,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:20:56,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:20:56,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:20:56,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:20:56,550 INFO L87 Difference]: Start difference. First operand 2908 states and 4503 transitions. Second operand 5 states. [2020-10-12 20:21:04,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:21:04,653 INFO L93 Difference]: Finished difference Result 8597 states and 13300 transitions. [2020-10-12 20:21:04,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:21:04,654 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 316 [2020-10-12 20:21:04,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:21:04,687 INFO L225 Difference]: With dead ends: 8597 [2020-10-12 20:21:04,690 INFO L226 Difference]: Without dead ends: 5702 [2020-10-12 20:21:04,698 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 [2020-10-12 20:21:04,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5702 states. [2020-10-12 20:21:04,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5702 to 5700. [2020-10-12 20:21:04,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5700 states. [2020-10-12 20:21:04,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5700 states to 5700 states and 8767 transitions. [2020-10-12 20:21:04,970 INFO L78 Accepts]: Start accepts. Automaton has 5700 states and 8767 transitions. Word has length 316 [2020-10-12 20:21:04,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:21:04,973 INFO L479 AbstractCegarLoop]: Abstraction has 5700 states and 8767 transitions. [2020-10-12 20:21:04,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:21:04,974 INFO L276 IsEmpty]: Start isEmpty. Operand 5700 states and 8767 transitions. [2020-10-12 20:21:04,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-10-12 20:21:04,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:21:04,997 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] [2020-10-12 20:21:04,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 20:21:04,999 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:21:04,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:21:04,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1267490889, now seen corresponding path program 1 times [2020-10-12 20:21:05,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:21:05,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1944021563] [2020-10-12 20:21:05,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:21:05,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:05,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:05,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:05,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:05,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:05,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:05,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:05,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:05,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:05,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:06,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:06,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:06,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:06,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:07,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:07,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:07,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:10,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:10,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-12 20:21:10,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 20:21:10,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-12 20:21:10,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:10,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:21:10,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:21:10,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-12 20:21:10,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:21:10,688 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-12 20:21:10,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:21:10,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:10,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:10,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:10,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:21:10,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:21:10,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 20:21:10,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:10,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:21:10,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:21:10,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:21:10,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:21:10,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:21:10,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1944021563] [2020-10-12 20:21:10,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:21:10,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:21:10,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762026858] [2020-10-12 20:21:10,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:21:10,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:21:10,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:21:10,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:21:10,934 INFO L87 Difference]: Start difference. First operand 5700 states and 8767 transitions. Second operand 5 states. [2020-10-12 20:21:17,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:21:17,352 INFO L93 Difference]: Finished difference Result 16592 states and 25454 transitions. [2020-10-12 20:21:17,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:21:17,353 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 318 [2020-10-12 20:21:17,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:21:17,404 INFO L225 Difference]: With dead ends: 16592 [2020-10-12 20:21:17,404 INFO L226 Difference]: Without dead ends: 11058 [2020-10-12 20:21:17,417 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 [2020-10-12 20:21:17,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11058 states. [2020-10-12 20:21:17,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11058 to 11056. [2020-10-12 20:21:17,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11056 states. [2020-10-12 20:21:17,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11056 states to 11056 states and 16852 transitions. [2020-10-12 20:21:17,898 INFO L78 Accepts]: Start accepts. Automaton has 11056 states and 16852 transitions. Word has length 318 [2020-10-12 20:21:17,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:21:17,898 INFO L479 AbstractCegarLoop]: Abstraction has 11056 states and 16852 transitions. [2020-10-12 20:21:17,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:21:17,901 INFO L276 IsEmpty]: Start isEmpty. Operand 11056 states and 16852 transitions. [2020-10-12 20:21:17,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-12 20:21:17,926 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:21:17,927 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] [2020-10-12 20:21:17,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 20:21:17,927 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:21:17,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:21:17,928 INFO L82 PathProgramCache]: Analyzing trace with hash -919086684, now seen corresponding path program 1 times [2020-10-12 20:21:17,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:21:17,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911116220] [2020-10-12 20:21:17,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:21:17,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:17,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:18,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:18,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:18,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:18,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:18,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:18,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:18,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:18,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:18,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:18,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:19,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:19,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:19,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:22,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:22,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:22,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-12 20:21:22,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 20:21:22,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 20:21:22,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:22,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:21:22,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:21:22,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-12 20:21:22,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:21:23,504 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-12 20:21:23,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:21:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:23,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:23,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:23,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:21:23,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:21:23,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-12 20:21:23,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:23,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:21:23,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:21:23,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:21:23,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:21:23,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:21:23,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911116220] [2020-10-12 20:21:23,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:21:23,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:21:23,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168042222] [2020-10-12 20:21:23,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:21:23,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:21:23,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:21:23,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:21:23,633 INFO L87 Difference]: Start difference. First operand 11056 states and 16852 transitions. Second operand 5 states. [2020-10-12 20:21:30,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:21:30,522 INFO L93 Difference]: Finished difference Result 32585 states and 49578 transitions. [2020-10-12 20:21:30,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:21:30,523 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 320 [2020-10-12 20:21:30,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:21:30,583 INFO L225 Difference]: With dead ends: 32585 [2020-10-12 20:21:30,583 INFO L226 Difference]: Without dead ends: 21630 [2020-10-12 20:21:30,605 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 20:21:30,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21630 states. [2020-10-12 20:21:31,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21630 to 21628. [2020-10-12 20:21:31,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21628 states. [2020-10-12 20:21:31,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21628 states to 21628 states and 32685 transitions. [2020-10-12 20:21:31,378 INFO L78 Accepts]: Start accepts. Automaton has 21628 states and 32685 transitions. Word has length 320 [2020-10-12 20:21:31,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:21:31,379 INFO L479 AbstractCegarLoop]: Abstraction has 21628 states and 32685 transitions. [2020-10-12 20:21:31,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:21:31,379 INFO L276 IsEmpty]: Start isEmpty. Operand 21628 states and 32685 transitions. [2020-10-12 20:21:31,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-10-12 20:21:31,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:21:31,423 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] [2020-10-12 20:21:31,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 20:21:31,423 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:21:31,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:21:31,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1402257333, now seen corresponding path program 1 times [2020-10-12 20:21:31,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:21:31,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927624015] [2020-10-12 20:21:31,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:21:31,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:31,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:31,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:31,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:31,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:31,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:31,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:31,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:31,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:31,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:32,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:34,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:34,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:34,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:34,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:34,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:36,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:36,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-12 20:21:36,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 20:21:36,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-12 20:21:36,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:36,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:21:36,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:21:36,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-12 20:21:36,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:21:37,076 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-12 20:21:37,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:21:37,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:37,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:37,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:37,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:21:37,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:21:37,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 20:21:37,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:37,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:21:37,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:21:37,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:21:37,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:21:37,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:21:37,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927624015] [2020-10-12 20:21:37,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:21:37,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:21:37,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013153593] [2020-10-12 20:21:37,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:21:37,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:21:37,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:21:37,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:21:37,199 INFO L87 Difference]: Start difference. First operand 21628 states and 32685 transitions. Second operand 5 states. [2020-10-12 20:21:46,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:21:46,047 INFO L93 Difference]: Finished difference Result 62891 states and 94693 transitions. [2020-10-12 20:21:46,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:21:46,048 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 322 [2020-10-12 20:21:46,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:21:46,157 INFO L225 Difference]: With dead ends: 62891 [2020-10-12 20:21:46,157 INFO L226 Difference]: Without dead ends: 42413 [2020-10-12 20:21:46,211 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 [2020-10-12 20:21:46,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42413 states. [2020-10-12 20:21:47,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42413 to 42411. [2020-10-12 20:21:47,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42411 states. [2020-10-12 20:21:47,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42411 states to 42411 states and 63603 transitions. [2020-10-12 20:21:47,977 INFO L78 Accepts]: Start accepts. Automaton has 42411 states and 63603 transitions. Word has length 322 [2020-10-12 20:21:47,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:21:47,977 INFO L479 AbstractCegarLoop]: Abstraction has 42411 states and 63603 transitions. [2020-10-12 20:21:47,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:21:47,978 INFO L276 IsEmpty]: Start isEmpty. Operand 42411 states and 63603 transitions. [2020-10-12 20:21:48,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-10-12 20:21:48,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:21:48,046 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] [2020-10-12 20:21:48,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:21:48,047 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:21:48,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:21:48,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1750595432, now seen corresponding path program 1 times [2020-10-12 20:21:48,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:21:48,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819926532] [2020-10-12 20:21:48,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:21:48,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:48,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:48,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:48,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:48,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:48,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:48,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:48,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:48,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:48,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:48,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:48,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:48,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:48,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:53,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:53,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 330 [2020-10-12 20:21:53,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 20:21:53,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 20:21:53,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:53,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:21:53,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:21:53,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-12 20:21:53,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:21:53,632 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-12 20:21:53,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:21:53,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:21:53,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:21:53,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:21:53,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:21:53,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:21:53,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 20:21:53,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:21:53,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:21:53,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:21:53,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:21:53,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:21:53,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:21:53,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819926532] [2020-10-12 20:21:53,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:21:53,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:21:53,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001377715] [2020-10-12 20:21:53,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:21:53,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:21:53,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:21:53,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:21:53,755 INFO L87 Difference]: Start difference. First operand 42411 states and 63603 transitions. Second operand 5 states. [2020-10-12 20:22:03,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:22:03,407 INFO L93 Difference]: Finished difference Result 124351 states and 185943 transitions. [2020-10-12 20:22:03,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:22:03,407 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 324 [2020-10-12 20:22:03,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:22:03,752 INFO L225 Difference]: With dead ends: 124351 [2020-10-12 20:22:03,752 INFO L226 Difference]: Without dead ends: 82661 [2020-10-12 20:22:03,835 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 [2020-10-12 20:22:03,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82661 states. [2020-10-12 20:22:08,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82661 to 82659. [2020-10-12 20:22:08,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82659 states. [2020-10-12 20:22:08,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82659 states to 82659 states and 122725 transitions. [2020-10-12 20:22:08,811 INFO L78 Accepts]: Start accepts. Automaton has 82659 states and 122725 transitions. Word has length 324 [2020-10-12 20:22:08,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:22:08,812 INFO L479 AbstractCegarLoop]: Abstraction has 82659 states and 122725 transitions. [2020-10-12 20:22:08,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:22:08,812 INFO L276 IsEmpty]: Start isEmpty. Operand 82659 states and 122725 transitions. [2020-10-12 20:22:08,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-12 20:22:08,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:22:08,891 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:22:08,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:22:08,892 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:22:08,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:22:08,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1833451768, now seen corresponding path program 1 times [2020-10-12 20:22:08,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:22:08,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264562103] [2020-10-12 20:22:08,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:22:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:08,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:08,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:09,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:09,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:09,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:09,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:09,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:09,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:09,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:09,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:09,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:09,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:09,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:10,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:10,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:13,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:13,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 332 [2020-10-12 20:22:13,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 20:22:13,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 20:22:13,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:13,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:22:13,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:22:13,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-12 20:22:13,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:22:14,521 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-12 20:22:14,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:22:14,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:14,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:14,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:14,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:22:14,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:22:14,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 20:22:14,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:14,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:22:14,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:22:14,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:22:14,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:22:14,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:22:14,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [264562103] [2020-10-12 20:22:14,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:22:14,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:22:14,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158573339] [2020-10-12 20:22:14,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:22:14,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:22:14,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:22:14,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:22:14,651 INFO L87 Difference]: Start difference. First operand 82659 states and 122725 transitions. Second operand 5 states. [2020-10-12 20:22:29,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:22:29,406 INFO L93 Difference]: Finished difference Result 240041 states and 355398 transitions. [2020-10-12 20:22:29,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:22:29,407 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 326 [2020-10-12 20:22:29,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:22:29,693 INFO L225 Difference]: With dead ends: 240041 [2020-10-12 20:22:29,693 INFO L226 Difference]: Without dead ends: 161415 [2020-10-12 20:22:29,800 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 [2020-10-12 20:22:29,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161415 states. [2020-10-12 20:22:39,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161415 to 161413. [2020-10-12 20:22:39,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161413 states. [2020-10-12 20:22:40,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161413 states to 161413 states and 237668 transitions. [2020-10-12 20:22:40,211 INFO L78 Accepts]: Start accepts. Automaton has 161413 states and 237668 transitions. Word has length 326 [2020-10-12 20:22:40,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:22:40,211 INFO L479 AbstractCegarLoop]: Abstraction has 161413 states and 237668 transitions. [2020-10-12 20:22:40,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:22:40,212 INFO L276 IsEmpty]: Start isEmpty. Operand 161413 states and 237668 transitions. [2020-10-12 20:22:40,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-12 20:22:40,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:22:40,333 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:22:40,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 20:22:40,334 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:22:40,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:22:40,334 INFO L82 PathProgramCache]: Analyzing trace with hash 740044155, now seen corresponding path program 1 times [2020-10-12 20:22:40,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:22:40,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962001582] [2020-10-12 20:22:40,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:22:40,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:40,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:40,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:40,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:40,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:40,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:40,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:40,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:40,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:40,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:40,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:40,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:40,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:40,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:41,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:45,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:45,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-10-12 20:22:45,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 20:22:45,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5530 [2020-10-12 20:22:45,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:45,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:22:45,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-12 20:22:45,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-12 20:22:45,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:22:46,414 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-12 20:22:46,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:22:46,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:22:46,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:22:46,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:22:46,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:22:46,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:22:46,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 20:22:46,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:22:46,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:22:46,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:22:46,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:22:46,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:22:46,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:22:46,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962001582] [2020-10-12 20:22:46,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:22:46,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:22:46,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914955700] [2020-10-12 20:22:46,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:22:46,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:22:46,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:22:46,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:22:46,544 INFO L87 Difference]: Start difference. First operand 161413 states and 237668 transitions. Second operand 5 states. [2020-10-12 20:23:09,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:23:09,578 INFO L93 Difference]: Finished difference Result 440317 states and 644102 transitions. [2020-10-12 20:23:09,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 20:23:09,579 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 328 [2020-10-12 20:23:09,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:23:09,963 INFO L225 Difference]: With dead ends: 440317 [2020-10-12 20:23:09,963 INFO L226 Difference]: Without dead ends: 296187 [2020-10-12 20:23:10,100 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 [2020-10-12 20:23:10,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296187 states. [2020-10-12 20:23:24,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296187 to 170937. [2020-10-12 20:23:24,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170937 states. [2020-10-12 20:23:24,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170937 states to 170937 states and 252788 transitions. [2020-10-12 20:23:24,342 INFO L78 Accepts]: Start accepts. Automaton has 170937 states and 252788 transitions. Word has length 328 [2020-10-12 20:23:24,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:23:24,342 INFO L479 AbstractCegarLoop]: Abstraction has 170937 states and 252788 transitions. [2020-10-12 20:23:24,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 20:23:24,342 INFO L276 IsEmpty]: Start isEmpty. Operand 170937 states and 252788 transitions. [2020-10-12 20:23:24,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-12 20:23:24,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:23:24,471 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:23:24,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 20:23:24,471 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:23:24,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:23:24,472 INFO L82 PathProgramCache]: Analyzing trace with hash 66188802, now seen corresponding path program 1 times [2020-10-12 20:23:24,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:23:24,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155963943] [2020-10-12 20:23:24,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:23:24,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:23:24,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:24,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:24,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:24,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:24,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:25,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:25,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:25,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:25,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:25,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:25,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:25,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:27,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:27,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:27,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:29,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:23:29,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 336 [2020-10-12 20:23:29,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 20:23:29,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 20:23:29,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:23:29,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 20:23:29,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:23:29,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-12 20:23:29,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:23:30,023 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-10-12 20:23:30,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:23:30,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:23:30,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:23:30,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:23:30,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:23:30,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:23:30,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 20:23:30,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:23:30,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:23:30,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:23:30,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:23:30,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:23:30,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:23:30,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [155963943] [2020-10-12 20:23:30,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:23:30,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 20:23:30,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332275877] [2020-10-12 20:23:30,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 20:23:30,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:23:30,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 20:23:30,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 20:23:30,326 INFO L87 Difference]: Start difference. First operand 170937 states and 252788 transitions. Second operand 5 states.