/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_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:16:17,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:16:17,307 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:16:17,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:16:17,352 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:16:17,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:16:17,364 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:16:17,368 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:16:17,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:16:17,373 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:16:17,374 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:16:17,376 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:16:17,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:16:17,378 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:16:17,379 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:16:17,382 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:16:17,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:16:17,384 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:16:17,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:16:17,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:16:17,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:16:17,394 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:16:17,396 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:16:17,397 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:16:17,404 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:16:17,404 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:16:17,404 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:16:17,407 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:16:17,408 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:16:17,409 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:16:17,409 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:16:17,410 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:16:17,412 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:16:17,413 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:16:17,414 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:16:17,414 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:16:17,415 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:16:17,415 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:16:17,415 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:16:17,416 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:16:17,417 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:16:17,418 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 19:16:17,459 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:16:17,460 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:16:17,461 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:16:17,461 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:16:17,461 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:16:17,462 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:16:17,462 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:16:17,462 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:16:17,462 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:16:17,462 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:16:17,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:16:17,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:16:17,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:16:17,463 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:16:17,463 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:16:17,463 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:16:17,464 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:16:17,464 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:16:17,464 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:16:17,464 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:16:17,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:16:17,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:16:17,465 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:16:17,465 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:16:17,465 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:16:17,465 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:16:17,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:16:17,466 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:16:17,466 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:16:17,466 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 19:16:17,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:16:17,775 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:16:17,779 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:16:17,783 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:16:17,784 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:16:17,784 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-12 19:16:17,843 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/021caf638/9d7c91719aed40acb5ed9570e362e88d/FLAG9ce5886c2 [2020-10-12 19:16:18,493 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:16:18,494 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-12 19:16:18,521 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/021caf638/9d7c91719aed40acb5ed9570e362e88d/FLAG9ce5886c2 [2020-10-12 19:16:18,610 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/021caf638/9d7c91719aed40acb5ed9570e362e88d [2020-10-12 19:16:18,622 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:16:18,624 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:16:18,627 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:16:18,627 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:16:18,631 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:16:18,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:16:18" (1/1) ... [2020-10-12 19:16:18,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2597d8ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:16:18, skipping insertion in model container [2020-10-12 19:16:18,636 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:16:18" (1/1) ... [2020-10-12 19:16:18,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:16:18,781 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:16:20,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:16:20,163 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:16:21,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:16:21,402 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:16:21,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:16:21 WrapperNode [2020-10-12 19:16:21,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:16:21,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:16:21,405 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:16:21,405 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:16:21,424 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:16:21" (1/1) ... [2020-10-12 19:16:21,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:16:21" (1/1) ... [2020-10-12 19:16:21,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:16:21" (1/1) ... [2020-10-12 19:16:21,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:16:21" (1/1) ... [2020-10-12 19:16:21,561 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:16:21" (1/1) ... [2020-10-12 19:16:21,591 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:16:21" (1/1) ... [2020-10-12 19:16:21,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:16:21" (1/1) ... [2020-10-12 19:16:21,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:16:21,614 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:16:21,614 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:16:21,615 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:16:21,616 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:16:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:16:21,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:16:21,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:16:21,686 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:16:21,686 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:16:21,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:16:21,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:16:21,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 19:16:21,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:16:21,687 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:16:21,687 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:16:21,687 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:16:21,687 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:16:21,688 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:16:21,688 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:16:21,688 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:16:21,688 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:16:21,688 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:16:21,689 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:16:21,689 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:16:21,689 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:16:21,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:16:21,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:16:24,587 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:16:24,588 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:16:24,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:16:24 BoogieIcfgContainer [2020-10-12 19:16:24,598 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:16:24,599 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:16:24,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:16:24,603 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:16:24,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:16:18" (1/3) ... [2020-10-12 19:16:24,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@acab16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:16:24, skipping insertion in model container [2020-10-12 19:16:24,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:16:21" (2/3) ... [2020-10-12 19:16:24,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@acab16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:16:24, skipping insertion in model container [2020-10-12 19:16:24,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:16:24" (3/3) ... [2020-10-12 19:16:24,606 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-12 19:16:24,618 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:16:24,627 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-10-12 19:16:24,644 INFO L251 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-10-12 19:16:24,674 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:16:24,674 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:16:24,674 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:16:24,674 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:16:24,674 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:16:24,675 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:16:24,675 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:16:24,675 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:16:24,712 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states. [2020-10-12 19:16:24,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-10-12 19:16:24,740 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:16:24,742 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] [2020-10-12 19:16:24,742 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:16:24,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:16:24,750 INFO L82 PathProgramCache]: Analyzing trace with hash 2107463414, now seen corresponding path program 1 times [2020-10-12 19:16:24,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:16:24,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1808798466] [2020-10-12 19:16:24,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:16:25,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:16:25,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:26,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:26,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:27,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:27,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:27,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:28,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:28,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:28,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:28,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:28,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:28,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:29,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:30,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:30,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:30,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:30,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:16:30,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-12 19:16:30,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 19:16:30,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-12 19:16:30,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:16:30,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:16:30,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:16:30,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-12 19:16:30,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 19:16:31,702 WARN L193 SmtUtils]: Spent 574.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:16:31,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:16:31,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:16:31,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:31,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:16:31,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:16:31,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:16:31,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 19:16:31,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:16:31,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:16:31,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:16:31,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:16:31,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:16:31,930 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 19:16:31,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1808798466] [2020-10-12 19:16:31,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:16:31,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:16:31,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791482576] [2020-10-12 19:16:31,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:16:31,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:16:31,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:16:31,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:16:31,958 INFO L87 Difference]: Start difference. First operand 922 states. Second operand 5 states. [2020-10-12 19:16:43,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:16:43,696 INFO L93 Difference]: Finished difference Result 2683 states and 4834 transitions. [2020-10-12 19:16:43,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 19:16:43,699 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 296 [2020-10-12 19:16:43,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:16:43,729 INFO L225 Difference]: With dead ends: 2683 [2020-10-12 19:16:43,729 INFO L226 Difference]: Without dead ends: 1798 [2020-10-12 19:16:43,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:16:43,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1798 states. [2020-10-12 19:16:43,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1798 to 1702. [2020-10-12 19:16:43,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1702 states. [2020-10-12 19:16:43,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 2598 transitions. [2020-10-12 19:16:43,939 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 2598 transitions. Word has length 296 [2020-10-12 19:16:43,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:16:43,940 INFO L479 AbstractCegarLoop]: Abstraction has 1702 states and 2598 transitions. [2020-10-12 19:16:43,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:16:43,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 2598 transitions. [2020-10-12 19:16:43,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-12 19:16:43,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:16:43,948 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] [2020-10-12 19:16:43,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:16:43,949 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:16:43,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:16:43,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1807018813, now seen corresponding path program 1 times [2020-10-12 19:16:43,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:16:43,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946219710] [2020-10-12 19:16:43,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:16:44,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:16:44,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:44,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:44,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:44,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:44,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:45,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:45,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:45,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:45,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:45,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:45,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:45,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:46,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:46,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:46,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:49,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:16:49,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-12 19:16:49,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:16:49,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 19:16:49,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:16:49,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:16:49,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:16:49,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-12 19:16:49,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:16:49,781 WARN L193 SmtUtils]: Spent 554.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:16:49,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:16:49,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:16:49,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:16:49,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:16:49,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:16:49,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:16:49,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-12 19:16:49,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:16:49,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:16:49,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:16:49,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:16:49,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:16:50,145 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 19:16:50,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946219710] [2020-10-12 19:16:50,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:16:50,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:16:50,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698571612] [2020-10-12 19:16:50,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:16:50,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:16:50,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:16:50,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:16:50,151 INFO L87 Difference]: Start difference. First operand 1702 states and 2598 transitions. Second operand 5 states. [2020-10-12 19:17:00,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:17:00,217 INFO L93 Difference]: Finished difference Result 4983 states and 7584 transitions. [2020-10-12 19:17:00,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:17:00,218 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 298 [2020-10-12 19:17:00,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:17:00,240 INFO L225 Difference]: With dead ends: 4983 [2020-10-12 19:17:00,240 INFO L226 Difference]: Without dead ends: 3324 [2020-10-12 19:17:00,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:17:00,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3324 states. [2020-10-12 19:17:00,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3324 to 3234. [2020-10-12 19:17:00,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3234 states. [2020-10-12 19:17:00,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3234 states to 3234 states and 4918 transitions. [2020-10-12 19:17:00,428 INFO L78 Accepts]: Start accepts. Automaton has 3234 states and 4918 transitions. Word has length 298 [2020-10-12 19:17:00,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:17:00,429 INFO L479 AbstractCegarLoop]: Abstraction has 3234 states and 4918 transitions. [2020-10-12 19:17:00,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:17:00,429 INFO L276 IsEmpty]: Start isEmpty. Operand 3234 states and 4918 transitions. [2020-10-12 19:17:00,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-10-12 19:17:00,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:17:00,444 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] [2020-10-12 19:17:00,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:17:00,444 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:17:00,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:17:00,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1376074073, now seen corresponding path program 1 times [2020-10-12 19:17:00,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:17:00,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386499063] [2020-10-12 19:17:00,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:17:00,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:17:00,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:00,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:00,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:00,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:01,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:01,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:01,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:01,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:01,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:01,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:01,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:01,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:02,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:02,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:02,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:02,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:02,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:05,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:17:05,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-10-12 19:17:05,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 19:17:05,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-12 19:17:05,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:17:05,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:17:05,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:17:05,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-12 19:17:05,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:17:06,316 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:17:06,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:17:06,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:17:06,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:06,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:17:06,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:17:06,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:17:06,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 19:17:06,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:17:06,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:17:06,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:17:06,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:17:06,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 19:17:06,589 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 19:17:06,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [386499063] [2020-10-12 19:17:06,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:17:06,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:17:06,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001252898] [2020-10-12 19:17:06,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:17:06,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:17:06,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:17:06,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:17:06,599 INFO L87 Difference]: Start difference. First operand 3234 states and 4918 transitions. Second operand 5 states. [2020-10-12 19:17:15,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:17:15,753 INFO L93 Difference]: Finished difference Result 9375 states and 14197 transitions. [2020-10-12 19:17:15,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:17:15,754 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 300 [2020-10-12 19:17:15,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:17:15,786 INFO L225 Difference]: With dead ends: 9375 [2020-10-12 19:17:15,787 INFO L226 Difference]: Without dead ends: 6273 [2020-10-12 19:17:15,794 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 19:17:15,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6273 states. [2020-10-12 19:17:16,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6273 to 6172. [2020-10-12 19:17:16,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6172 states. [2020-10-12 19:17:16,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6172 states to 6172 states and 9326 transitions. [2020-10-12 19:17:16,147 INFO L78 Accepts]: Start accepts. Automaton has 6172 states and 9326 transitions. Word has length 300 [2020-10-12 19:17:16,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:17:16,155 INFO L479 AbstractCegarLoop]: Abstraction has 6172 states and 9326 transitions. [2020-10-12 19:17:16,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:17:16,156 INFO L276 IsEmpty]: Start isEmpty. Operand 6172 states and 9326 transitions. [2020-10-12 19:17:16,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-12 19:17:16,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:17:16,174 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] [2020-10-12 19:17:16,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:17:16,174 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:17:16,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:17:16,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1867437811, now seen corresponding path program 1 times [2020-10-12 19:17:16,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:17:16,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370467790] [2020-10-12 19:17:16,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:17:16,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:17:16,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:16,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:16,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:16,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:16,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:16,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:17,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:17,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:17,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:18,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:18,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:18,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:18,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:18,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:18,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:20,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:20,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:21,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:17:21,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-12 19:17:21,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 19:17:21,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-12 19:17:21,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:17:21,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:17:21,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-12 19:17:21,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 19:17:21,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 19:17:22,019 WARN L193 SmtUtils]: Spent 565.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:17:22,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:17:22,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:17:22,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:22,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:17:22,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:17:22,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:17:22,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 19:17:22,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:17:22,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:17:22,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:17:22,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:17:22,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:17:22,159 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 19:17:22,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370467790] [2020-10-12 19:17:22,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:17:22,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:17:22,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880939698] [2020-10-12 19:17:22,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:17:22,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:17:22,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:17:22,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:17:22,162 INFO L87 Difference]: Start difference. First operand 6172 states and 9326 transitions. Second operand 5 states. [2020-10-12 19:17:32,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:17:32,614 INFO L93 Difference]: Finished difference Result 17628 states and 26456 transitions. [2020-10-12 19:17:32,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:17:32,615 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 302 [2020-10-12 19:17:32,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:17:32,662 INFO L225 Difference]: With dead ends: 17628 [2020-10-12 19:17:32,663 INFO L226 Difference]: Without dead ends: 12131 [2020-10-12 19:17:32,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:17:32,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12131 states. [2020-10-12 19:17:33,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12131 to 6754. [2020-10-12 19:17:33,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6754 states. [2020-10-12 19:17:33,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6754 states to 6754 states and 10340 transitions. [2020-10-12 19:17:33,056 INFO L78 Accepts]: Start accepts. Automaton has 6754 states and 10340 transitions. Word has length 302 [2020-10-12 19:17:33,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:17:33,056 INFO L479 AbstractCegarLoop]: Abstraction has 6754 states and 10340 transitions. [2020-10-12 19:17:33,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:17:33,057 INFO L276 IsEmpty]: Start isEmpty. Operand 6754 states and 10340 transitions. [2020-10-12 19:17:33,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-12 19:17:33,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:17:33,073 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] [2020-10-12 19:17:33,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:17:33,073 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:17:33,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:17:33,074 INFO L82 PathProgramCache]: Analyzing trace with hash -1270955234, now seen corresponding path program 1 times [2020-10-12 19:17:33,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:17:33,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006792713] [2020-10-12 19:17:33,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:17:33,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:17:33,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:33,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:33,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:33,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:33,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:33,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:33,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:33,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:33,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:33,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:33,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:34,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:34,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:34,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:35,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:38,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:17:38,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 309 [2020-10-12 19:17:38,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:17:38,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-12 19:17:38,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:17:38,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:17:38,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:17:38,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-12 19:17:38,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-12 19:17:39,008 WARN L193 SmtUtils]: Spent 653.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:17:39,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:17:39,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:17:39,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:39,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:17:39,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:17:39,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:17:39,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 19:17:39,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:17:39,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:17:39,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:17:39,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:17:39,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:17:39,150 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 19:17:39,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006792713] [2020-10-12 19:17:39,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:17:39,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:17:39,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483730319] [2020-10-12 19:17:39,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:17:39,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:17:39,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:17:39,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:17:39,153 INFO L87 Difference]: Start difference. First operand 6754 states and 10340 transitions. Second operand 5 states. [2020-10-12 19:17:48,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:17:48,967 INFO L93 Difference]: Finished difference Result 19752 states and 30162 transitions. [2020-10-12 19:17:48,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:17:48,968 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 303 [2020-10-12 19:17:48,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:17:49,009 INFO L225 Difference]: With dead ends: 19752 [2020-10-12 19:17:49,010 INFO L226 Difference]: Without dead ends: 13163 [2020-10-12 19:17:49,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:17:49,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13163 states. [2020-10-12 19:17:49,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13163 to 13062. [2020-10-12 19:17:49,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13062 states. [2020-10-12 19:17:49,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13062 states to 13062 states and 19818 transitions. [2020-10-12 19:17:49,622 INFO L78 Accepts]: Start accepts. Automaton has 13062 states and 19818 transitions. Word has length 303 [2020-10-12 19:17:49,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:17:49,622 INFO L479 AbstractCegarLoop]: Abstraction has 13062 states and 19818 transitions. [2020-10-12 19:17:49,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:17:49,623 INFO L276 IsEmpty]: Start isEmpty. Operand 13062 states and 19818 transitions. [2020-10-12 19:17:49,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-12 19:17:49,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:17:49,652 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] [2020-10-12 19:17:49,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:17:49,652 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:17:49,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:17:49,653 INFO L82 PathProgramCache]: Analyzing trace with hash 951402981, now seen corresponding path program 1 times [2020-10-12 19:17:49,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:17:49,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711520744] [2020-10-12 19:17:49,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:17:49,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:17:49,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:49,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:49,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:49,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:50,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:50,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:50,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:50,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:50,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:50,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:50,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:50,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:51,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:51,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:51,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:53,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:53,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:53,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:54,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:54,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:54,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:17:54,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-12 19:17:54,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-12 19:17:54,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 19:17:54,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:17:54,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:17:54,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:17:54,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-12 19:17:54,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:17:55,509 WARN L193 SmtUtils]: Spent 694.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:17:55,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:17:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:17:55,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:17:55,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:17:55,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:17:55,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:17:55,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:17:55,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:17:55,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:17:55,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:17:55,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:17:55,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:17:55,631 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 19:17:55,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711520744] [2020-10-12 19:17:55,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:17:55,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:17:55,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450924211] [2020-10-12 19:17:55,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:17:55,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:17:55,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:17:55,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:17:55,634 INFO L87 Difference]: Start difference. First operand 13062 states and 19818 transitions. Second operand 5 states. [2020-10-12 19:18:06,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:18:06,125 INFO L93 Difference]: Finished difference Result 37883 states and 57296 transitions. [2020-10-12 19:18:06,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:18:06,126 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 305 [2020-10-12 19:18:06,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:18:06,175 INFO L225 Difference]: With dead ends: 37883 [2020-10-12 19:18:06,175 INFO L226 Difference]: Without dead ends: 25234 [2020-10-12 19:18:06,204 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:18:06,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25234 states. [2020-10-12 19:18:07,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25234 to 25133. [2020-10-12 19:18:07,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25133 states. [2020-10-12 19:18:07,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25133 states to 25133 states and 37720 transitions. [2020-10-12 19:18:07,283 INFO L78 Accepts]: Start accepts. Automaton has 25133 states and 37720 transitions. Word has length 305 [2020-10-12 19:18:07,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:18:07,284 INFO L479 AbstractCegarLoop]: Abstraction has 25133 states and 37720 transitions. [2020-10-12 19:18:07,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:18:07,284 INFO L276 IsEmpty]: Start isEmpty. Operand 25133 states and 37720 transitions. [2020-10-12 19:18:07,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-12 19:18:07,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:18:07,328 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] [2020-10-12 19:18:07,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:18:07,328 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:18:07,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:18:07,329 INFO L82 PathProgramCache]: Analyzing trace with hash -511311567, now seen corresponding path program 1 times [2020-10-12 19:18:07,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:18:07,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1531029354] [2020-10-12 19:18:07,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:18:07,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:07,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:07,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:07,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:07,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:07,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:07,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:07,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:07,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:07,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:07,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:07,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:08,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:08,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:08,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:11,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:11,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:11,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:11,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:12,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:12,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-12 19:18:12,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-12 19:18:12,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 19:18:12,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:12,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:18:12,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:18:12,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-12 19:18:12,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:18:13,163 WARN L193 SmtUtils]: Spent 686.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:18:13,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:18:13,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:13,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:13,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:13,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:18:13,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:18:13,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 19:18:13,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:13,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:18:13,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:18:13,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:18:13,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:18:13,315 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 19:18:13,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1531029354] [2020-10-12 19:18:13,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:18:13,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:18:13,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878083398] [2020-10-12 19:18:13,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:18:13,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:18:13,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:18:13,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:18:13,318 INFO L87 Difference]: Start difference. First operand 25133 states and 37720 transitions. Second operand 5 states. [2020-10-12 19:18:25,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:18:25,398 INFO L93 Difference]: Finished difference Result 74188 states and 111195 transitions. [2020-10-12 19:18:25,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:18:25,399 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 308 [2020-10-12 19:18:25,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:18:25,485 INFO L225 Difference]: With dead ends: 74188 [2020-10-12 19:18:25,485 INFO L226 Difference]: Without dead ends: 49099 [2020-10-12 19:18:25,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:18:25,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49099 states. [2020-10-12 19:18:27,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49099 to 49001. [2020-10-12 19:18:27,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49001 states. [2020-10-12 19:18:27,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49001 states to 49001 states and 72920 transitions. [2020-10-12 19:18:27,529 INFO L78 Accepts]: Start accepts. Automaton has 49001 states and 72920 transitions. Word has length 308 [2020-10-12 19:18:27,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:18:27,529 INFO L479 AbstractCegarLoop]: Abstraction has 49001 states and 72920 transitions. [2020-10-12 19:18:27,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:18:27,529 INFO L276 IsEmpty]: Start isEmpty. Operand 49001 states and 72920 transitions. [2020-10-12 19:18:27,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-12 19:18:27,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:18:27,579 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:18:27,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:18:27,579 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:18:27,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:18:27,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1677009075, now seen corresponding path program 1 times [2020-10-12 19:18:27,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:18:27,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354041973] [2020-10-12 19:18:27,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:18:27,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:27,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:27,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:27,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:27,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:27,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:27,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:28,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:28,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:28,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:28,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:28,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:28,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:28,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:28,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:29,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:32,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:32,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-12 19:18:32,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:18:32,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 19:18:32,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:32,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:18:32,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:18:32,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-12 19:18:32,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:18:33,420 WARN L193 SmtUtils]: Spent 692.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:18:33,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:18:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:33,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:33,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:33,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:18:33,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:18:33,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:18:33,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:33,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:18:33,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:18:33,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:18:33,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:18:33,529 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 19:18:33,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354041973] [2020-10-12 19:18:33,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:18:33,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:18:33,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080809577] [2020-10-12 19:18:33,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:18:33,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:18:33,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:18:33,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:18:33,532 INFO L87 Difference]: Start difference. First operand 49001 states and 72920 transitions. Second operand 5 states. [2020-10-12 19:18:47,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:18:47,947 INFO L93 Difference]: Finished difference Result 145080 states and 215683 transitions. [2020-10-12 19:18:47,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:18:47,948 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 310 [2020-10-12 19:18:47,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:18:48,083 INFO L225 Difference]: With dead ends: 145080 [2020-10-12 19:18:48,084 INFO L226 Difference]: Without dead ends: 96387 [2020-10-12 19:18:48,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:18:48,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96387 states. [2020-10-12 19:18:54,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96387 to 96259. [2020-10-12 19:18:54,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96259 states. [2020-10-12 19:18:54,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96259 states to 96259 states and 142390 transitions. [2020-10-12 19:18:54,758 INFO L78 Accepts]: Start accepts. Automaton has 96259 states and 142390 transitions. Word has length 310 [2020-10-12 19:18:54,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:18:54,759 INFO L479 AbstractCegarLoop]: Abstraction has 96259 states and 142390 transitions. [2020-10-12 19:18:54,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:18:54,759 INFO L276 IsEmpty]: Start isEmpty. Operand 96259 states and 142390 transitions. [2020-10-12 19:18:54,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-12 19:18:54,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:18:54,853 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 19:18:54,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:18:54,854 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:18:54,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:18:54,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1889551792, now seen corresponding path program 1 times [2020-10-12 19:18:54,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:18:54,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162990526] [2020-10-12 19:18:54,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:18:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:18:54,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:54,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:55,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:55,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:55,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:55,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:55,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:55,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:55,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:55,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:55,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:55,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:57,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:57,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:18:59,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:18:59,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-12 19:18:59,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:18:59,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-12 19:18:59,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:18:59,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:18:59,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:18:59,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-12 19:18:59,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:19:00,738 WARN L193 SmtUtils]: Spent 691.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:19:00,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:19:00,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:19:00,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:00,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:19:00,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:19:00,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:19:00,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:19:00,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:19:00,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:19:00,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:19:00,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:19:00,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:19:00,851 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 19:19:00,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162990526] [2020-10-12 19:19:00,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:19:00,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:19:00,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655738484] [2020-10-12 19:19:00,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:19:00,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:19:00,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:19:00,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:19:00,854 INFO L87 Difference]: Start difference. First operand 96259 states and 142390 transitions. Second operand 5 states. [2020-10-12 19:19:23,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:19:23,504 INFO L93 Difference]: Finished difference Result 281052 states and 414722 transitions. [2020-10-12 19:19:23,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 19:19:23,505 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 312 [2020-10-12 19:19:23,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:19:23,733 INFO L225 Difference]: With dead ends: 281052 [2020-10-12 19:19:23,734 INFO L226 Difference]: Without dead ends: 189217 [2020-10-12 19:19:23,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 19:19:23,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189217 states. [2020-10-12 19:19:34,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189217 to 189105. [2020-10-12 19:19:34,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189105 states. [2020-10-12 19:19:35,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189105 states to 189105 states and 277527 transitions. [2020-10-12 19:19:35,185 INFO L78 Accepts]: Start accepts. Automaton has 189105 states and 277527 transitions. Word has length 312 [2020-10-12 19:19:35,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:19:35,185 INFO L479 AbstractCegarLoop]: Abstraction has 189105 states and 277527 transitions. [2020-10-12 19:19:35,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 19:19:35,185 INFO L276 IsEmpty]: Start isEmpty. Operand 189105 states and 277527 transitions. [2020-10-12 19:19:38,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-10-12 19:19:38,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:19:38,357 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 19:19:38,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 19:19:38,357 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:19:38,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:19:38,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1926293716, now seen corresponding path program 1 times [2020-10-12 19:19:38,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:19:38,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879314451] [2020-10-12 19:19:38,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:19:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:19:38,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:38,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:38,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:38,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:38,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:38,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:38,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:38,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:38,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:38,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:38,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:38,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:38,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:38,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:41,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:41,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:41,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:43,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:19:43,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 320 [2020-10-12 19:19:43,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 19:19:43,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-12 19:19:43,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:19:43,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 19:19:43,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 19:19:43,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 19:19:43,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:19:44,229 WARN L193 SmtUtils]: Spent 720.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:19:44,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:19:44,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:19:44,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:19:44,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:19:44,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:19:44,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:19:44,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:19:44,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:19:44,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:19:44,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:19:44,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:19:44,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:19:44,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:19:44,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879314451] [2020-10-12 19:19:44,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:19:44,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 19:19:44,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567085209] [2020-10-12 19:19:44,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 19:19:44,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:19:44,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 19:19:44,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 19:19:44,335 INFO L87 Difference]: Start difference. First operand 189105 states and 277527 transitions. Second operand 5 states.